Answers
Answer:
The cells survive best under acidic conditions
Explanation:
To understand this graph, you first need to understand what data is being given. All you are given is cell survival and pH.
With this, the pH has an obvious effect on cell survival. Higher pH (basic environment) correlates to more cells dying. Knowing this, you can rationalize that the more acidic environments with a low pH are the best environment for it.
Also, it would not survive well in distilled water since its pH lies somewhere north of 6, which is shown to not be ideal here.
Related Questions
How does a mass drive work?
A.
It uses the potential of a spacecraft to nudge an NEO out of its current path.
B.
It removes and ejects mass from an NEO, and gives it a little push.
C.
It involves a small rocket thrust; the mass of the NEO provides the momentum to move it further.
D.
It drives a smaller NEO into a collision course with the hazardous NEO.
Answers
Answer:
B I think.
Explanation:
Could also be D but I know it's not A or C, I took a test and it wasn't either of those.
the innermost layer of connective tissue of a muscle is the
Answers
Question 14 (2 points) The process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called natural selection. O mutation. genetic drift. migration.
Answers
The process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called a mutation.
A mutation is a sudden and lasting alteration in the DNA sequence that can influence genetic variation. Changes in the DNA sequence can influence phenotype, which may or may not have an effect on an organism's fitness. Mutations occur spontaneously, either from errors in DNA replication or from exposure to mutagenic agents. Mutations may happen in either coding or non-coding regions of the DNA, and they can be either silent or expressed.
Evolution is a natural process that results in the gradual change of inherited characteristics in populations over generations. It is the process of alteration in the inherited characteristics of species over successive generations. In other words, it is the process of gradual changes that happen to species over time as they adapt to their environments. It can be defined as a change in the gene frequency in a population over time.
Types of Evolution 1. Natural Selection 2. Genetic Drift 3. Gene Flow 4. Mutation 5. Non-Random Mating 6. Admixture 7. Mutation Pressure 8. Genetic Draft 9. Bottleneck and Founder Effect 10. Sexual Selection the process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called a mutation.
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cell division that reduces chromosome number from diploid to haploid, reduction division
A Mitosis
B Meiosis
C Amitosis
D Fision
Answers
Meiosis is a type of cell division that reduces chromosome number from diploid to haploid.
What do you mean by meiosis?
Meiosis, also called reduction division, division of a germ cell involving two fissions of the nucleus and giving rise to four gametes, or sex cells, each possessing half the number of chromosomes of the original cell.
The process of meiosis is characteristic of organisms that reproduce sexually. Such species have in the nucleus of each cell a diploid (double) set of chromosomes, consisting of two haploid sets (one inherited from each parent). These haploid sets are homologous—i.e., they contain the same kinds of genes, but not necessarily in the same form.
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Meiosis is the division of a cell that reduces the number of chromosomes from a diploid (2n) state to a haploid (n) state.
What is diploid?
Diploid is a term used in genetics to refer to a cell or organism that has two sets of chromosomes. In humans, the diploid number of chromosomes is 46, which is two sets of 23. This means that any human cell contains two copies of each chromosome, one from each parent. Diploid cells are found in multicellular organisms, and are the most common form of cells in the human body. Diploidy is important for genetic diversity, as it allows for the exchange of genetic material between the two sets of chromosomes. This helps create genetic variation, which is necessary for evolution to occur.
This occurs in sex cells during the process of gamete formation, and is essential for sexual reproduction. During meiosis, two consecutive nuclear divisions (meiosis I and meiosis II) reduce the number of chromosomes by half. This process also involves cell division, which results in four haploid daughter cells. Each daughter cell contains one set of chromosomes, which is a combination of the maternal and paternal chromosomes of the original cell.
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The protein, lipid, and carbohydrate compositions of the cytoplasmic and extracellular sides of membranes are different from one another. Why is this the case? (3 points)
a) Some membrane components are synthesized outside of the cell, while others are synthesized in the cytosol.
b) The two sides of a cell membrane face different environments and carry out different functions.
c) The molecular composition of the inner and outer layers of the cell membrane is determined by genes.
d) Proteins only function on the cytoplasmic side of the cell membrane, which results in asymmetry across the membrane.
Answers
Answer:
The protein, lipid, and carbohydrate compositions of the cytoplasmic and extracellular sides of membranes are different from one another , this happens because the two sides of a cell membrane face different environments and carry out different functions.
Explanation:
PROTEINS , LIPID AND CARBOHYDRATES , all are the components of the plasma membrane , located at different sites .
PROTEINS -: The main component of plasma membranes is proteins. Two key categories of membrane proteins are available: integral and peripheral. As their name implies, integral membrane proteins are incorporated into the membrane: they have at least one hydrophobic region that anchors them to the phospholipid bilayer's hydrophobic center. Others just stick partway through the membrane, while others extend from one side of the membrane to the other and on either side are exposed.
On the outside and inside surfaces of membranes, peripheral membrane proteins are found which are bound either to integral proteins or to phospholipids. Peripheral membrane proteins do not stick into the hydrophobic center of the membrane as opposed to integral membrane proteins, and appear to be more loosely bound.
LIPID -: Phospholipids, arranged in a bilayer, make up the plasma membrane 's essential cloth. Since they are amphipathic, they are well-suited for this function, meaning they have both hydrophilic and hydrophobic regions.
The hydrophilic or "water-loving" component of a phospholipid is its head, which includes a phosphate group that is negatively charged, as well as an additional small group that can also be charged or polar.
Its long, nonpolar fatty acid tails make up the hydrophobic, or "water-fearing," portion of a phospholipid. The tails of fatty acids can interact easily with other non-polar molecules, but interact poorly with water.
CARBOHYDRATES -: The main component of plasma membranes is carbohydrates. In general, they are located on the outer surface of the cells and are either bound to proteins (glycoproteins forming) or to lipids (glycolipids forming). These chains of carbohydrates can consist of 2-60 units of monosaccharide and can either be straight or branched.
Hence , the correct option is B.
The movement of water into and out of plant cells described by ____________ which is the ability of water to ____________ .
Answers
The movement of water into and out of plant cells is described by water potential which is the ability of water to do work.
What is water potential?It is the capacity of water to move from one place to another. Work is done when a substance moves from one place to another. Simply put, water potential is the capacity of water to do work.
Water moves into and out of a cell depending on the water potential of the cell and that of the ambient solution. naturally, water will always move from the region of high to the region of low water potential in cells.
Thus, if the water potential of cells is higher, water will move out of cells to the surrounding. If the water potential of cells is lower, water will enter cells from the surrounding.
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Which adaptation do organisms need to live in an estuary?
Answers
Answer:
they need to be able to maintain their salt content, thru osmoregulation
Answer:
I have been stuck on this myself, but I needed 2 answers. Here are 1 one of the correct answers :)
Explanation: The organisms in an Estuary have to adapt to the changing tides. A better explanation: Organisms must adapt to the high and low tides in order to live in an Estuary.
Hope this helped :]
Hi, could someone tell me what should be in the blank space of my concept map about the cell membrane?
Answers
How can biology be studied at different scales?.
Answers
Some of the levels at which life can be studied include molecules, cells, organisms, populations of a single kind of organisms, communities of different organisms in an area, and the biosphere. At all these levels, smaller living systems are found within larger systems.
Unlike animal cells, plant cells contains —
A.
mitochondria.
B.
few nuclear pores in their nucleus.
C.
a large vacuole for water storage.
D.
centrioles.
Answers
Which lineages of vertebrates are aquatic and which are terrestrial (live octand)? ray-finned fish v lobe-finned fish 1. aquatic mammals 2. terrestrial amphibians 3. both: but at different stages of their life reptiles Save Question 6 (0.5 points) Match the anatomical term with the organ system it belongs to De Saved Deta stomach
Answers
In terms of lineages of vertebrates, ray-finned fish and lobe-finned fish are aquatic.
Aquatic mammals are also aquatic, while terrestrial amphibians are mostly terrestrial. Reptiles can be both aquatic and terrestrial, depending on the species.
In more detail, ray-finned fish and lobe-finned fish are adapted to aquatic environments, having fins and gills for movement and respiration. Aquatic mammals, such as whales and dolphins, have evolved for life in the water with specialized features like streamlined bodies and flippers.
Terrestrial amphibians, like frogs and salamanders, mainly live on land, though they still rely on water for reproduction. Finally, reptiles, which include turtles, lizards, and snakes, can be found in both aquatic and terrestrial habitats, with different species adapted to either lifestyle.
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P. Meares, On the mechanism of desalination by reverse osmosis flow through cellulose acetate membrane, Eur. Polym. J., 2 (1966) 241
Answers
By applying pressure to drive water molecules through a semipermeable membrane, the reverse osmosis (RO) method of water treatment eliminates impurities from water.
How does reverse osmosis function in cell acetate membrane?
It is demonstrated that 99.99 percent of the movement of liquid water in membranes is most likely accomplished by viscous flow in convoluted channels with a width of 6 to 9. These take up around 4% of the membrane's overall volume. In the polymer matrix, uniform diffusion carries around 1% of the water. In an osmotic experiment, movement in the pores accounts for about half of the sodium chloride flux, while diffusion in the matrix accounts for the other half. Due to the bulk flow of water in the pores during reverse osmosis, these proportions must change. Due to electrostatic effects, the salt concentration in the pores is significantly lower than that of the bulk solution.Learn more about the reverse osmosis with the help of the given link:
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Which of the following describes the functions of the pancreas? (2 points)
I. It helps with digestion
II. It filters the blood
III. It produces insulin
Answers
QUESTION 1 a) Two resistors are connected in series across a battery of e.m.f 12 V. If one of the resistors has a value of 16Ω and it dissipates a power of 4 W, calculate (i) the circuit current and (ii) the value of the other resistor b) State the five (5) major steps used in engineering design and problem solving process. [ c) Two capacitors A and B are connected in series across a 100 V supply and it is observed that the p.ds across them 60 V and 40 V respectively. A capacitor of 2μF capacitance is now connected in parallel with A and the p.d across B rises to 90 V. Calculate the capacitance of A and B in microfarads.
Answers
The capacitance of A and B are 1 μF and 9 μF, respectively
a) We are given that e.m.f (ε) = 12 V, R₁ = 16Ω, and P = 4 W. We are to find the circuit current and the value of the other resistor. Formula for calculating the power: P = V × I, where V is the voltage and I is the current.
To find the circuit current:
We know that the total resistance (R) of the circuit is given by:
R = R₁ + R₂
We also know that the total voltage (V) of the circuit is given by:
V = εUsing P = V × I, we can say:
I = P / V
Substituting the given values, we get:
I = 4 / 12 = 0.3333 A = 0.33 A
To find the value of the other resistor:
Formula to calculate the power:
P = V² / R
Using the given values, we can say:
4 = 12² / 16R₂
Substituting R₂, we get:
R₂ = (12² / 16) × (1 / 4)R₂ = 9Ωb)
The five major steps used in engineering design and problem-solving process include:
Identify the problem/need
Research the problem/need
Develop possible solutions
Select the most feasible solution
Implement the solution and evaluate the results
c) Capacitors A and B are connected in series across a 100 V supply. We know that the total voltage (V) of the circuit is given by:
V = V₁ + V₂Where V₁ and V₂ are the p.ds across capacitors A and B, respectively. So, we can say:
V = 60 + 40 = 100 V
When a capacitor of 2 μF capacitance is connected in parallel with A, the p.d across B rises to 90 V. Let the capacitance of A be C, and the capacitance of B be C₂.Formula for calculating the equivalent capacitance of capacitors in parallel:
C = C₁C₂ / (C₁ + C₂)
We can say that:
C + 2 = C
Now, the total capacitance (Ct) of the circuit is given by:Ct = C + C₂
We know that the p.d across the series combination of capacitors A and B is 100 V. So, we can say:
V = (Q / C) + (Q / C₂) = (Q / Ct)But, Q = CV
So, we can write:
V = C₂ / (C + C₂) × 100......(1)
When the 2 μF capacitor is connected in parallel with A, the p.d across B becomes 90 V.
So, we can write:V₂ = 90 = Q / C₂......(2)
From equations (1) and (2), we get:
C₂ / (C + C₂) × 100 = 90......(3)
C₂ / (C + C₂) = 0.9......(4)
0.9C + 0.9C₂ = C₂......(5)
0.9C = 0.1C₂......(6)
C = (1 / 9)C₂......(7)
Substituting equation (7) in equation (5), we get:
C₂ / 10 = C₂ / 9 + C₂......(8)
(C₂ / 10) - (10 / 10)C₂ = (9 / 9)C₂ / 9
Simplifying the above expression, we get:
C₂ / 90 = 1 / 10C₂ = 9 μF
Substituting this value in equation (7), we get:
C = (1 / 9) × 9 = 1 μF
Therefore, the capacitance of A and B are 1 μF and 9 μF, respectively.
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how many sensory receptors does the human mouth contain for taste
Answers
The human mouth contains around 10,000 taste receptors. Taste receptors, also known as gustatory receptors.
Are specialised cells located on the tongue, palate, and throat that detect the presence of chemicals in food.
As food is consumed, these cells become engaged and provide messages to the brain concerning the taste and texture of the meal. The five major tastes that the human tongue can distinguish are umami, umami, umami, and sweet.
The front of the tongue is used to taste sweet and salty flavours, the sides for sour flavours, and the rear for bitter flavours. While it may be tasted on the whole tongue, umami is most powerfully tasted in the rear.
The tongue's taste receptors are a component of a broader network of nerve cells and neurotransmitters that collaborate to recognise and comprehend flavours.
As food is consumed, taste receptors relay information about the flavour and texture to the brain, which interprets the information and conveys it as an emotion. The food's suitability for consumption is then decided using this information.
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an electron moves with a speed of 2.5×107 m/s in the directions shown in (figure 1) and (figure 2) below. a 0.60 t magnetic field points in the positive x-direction.
Answers
The force acting on an electron with a speed of \(2.5x10^7 m/s\) moving in a magnetic field of \(0.60 T\) pointing in the positive x-direction is \(3.0 x 10^-^1^7 N\)
When an electron is moving with a velocity v in a magnetic field B, a force F is exerted on the electron. This force is given by the formula: \(F = qvBsin\theta\) where q is the charge of the electron, v is the velocity of the electron, B is the strength of the magnetic field, and θ is the angle between the direction of motion of the electron and the magnetic field.
In this case, the electron is moving in a magnetic field of 0.60 T pointing in the positive x-direction, so θ = 90° and sinθ = 1.
Plugging in the given values, we get:
\(F = (1.6 x 10^-^1^9 C) (2.5 x 10^7 m/s) (0.60 T) (1)\)
\(= 3.0 x 10^-^1^7 N\)
Therefore, the force acting on the electron is \(3.0 x 10^-^1^7 N\)
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How are the fish surviving if there is no oxygen entering into the fish tank. The fish tank is sealed?
Answers
Answer:
Fish have gills they breathe under water
Which of the following is NOT true about RNA?
A. It is single stranded.
B. It is a Nucleic Acid.
C. It contains Deoxyribose.
D. It contains Uracil.
Answers
Which of the following combinations of elements make up over 90% of living things? WILL GIVE BRAINLIEST!!!!
a. carbon, oxygen, sulfur, hydrogen
b. sulfur, oxygen, carbon, phosphorous
c. hydrogen, carbon, oxygen, nitrogen
d. phosphorous, nitrogen, hydrogen, oxygen
Answers
The combinations of elements that make up over 90% of living things are hydrogen, carbon, oxygen, nitrogen.
What are the 6 major elements of life?The 6 most typical elements of life on Earth are :
Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur and Phosphorus.Thus, option "C" is correct, these are all the essential elements required for the survival of living organisms,
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Answer:
C. Hydrogen, Carbon, Oxygen, Nitrogen.
Explanation:
i need help please
will give brainliest
Answers
Answer:
The answer will be b
Explanation:
Their kidneys are specially adapted to excrete lots of salt, and even their gills can excrete salt in this way so that they keep their blood salinity levels at an optimum. Freshwater fish are the opposite.
Scientists find evidence of a large meteor impact on the coast of the Yucatán Peninsula in Mexico. What can the scientists most likely expect to find in the layers of rock that are about the same age as
the impact?
evidence of the mass extinction of many species
evidence of a gradual change of one species over time
evidence of a rapid change in one species
evidence of the stability of many species over time
Answers
Answer:
evidence of a gradual change of one species over time
Explanation:
Scientists can most likely expect to find evidence of the mass extinction of many species in the layers of rock that are about the same age as the impact. Therefore, option (A) is correct.
What is mass extinction?Mass extinction refers to a widespread and rapid decrease in the biodiversity on Earth, where a large number of species become extinct within a relatively short period of time.
The impact of a large meteor on the Earth can cause widespread destruction and have far-reaching consequences, including the extinction of many species. The impact can cause a global environmental crisis, which can include the release of massive amounts of dust and debris that block sunlight, leading to a drop in temperature and changes in climate.
These changes can have catastrophic effects on living organisms, particularly those that rely on photosynthesis for survival. As a result, scientists can expect to find evidence of the mass extinction of many species in the layers of rock that are about the same age as the impact.
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which of the following has the highest surface area/volume ratio
Answers
Objects with a high surface area/volume ratio are those with a large surface area relative to their volume. This means that they have a lot of surface area for a small amount of material.
For example, a sphere has a relatively low surface area/volume ratio because it has a small surface area compared to its volume. On the other hand, a cube has a higher surface area/volume ratio because it has more surface area for its volume.
Shapes with a lot of corners or edges, such as cubes, pyramids, or prisms, tend to have higher surface area/volume ratios than more rounded shapes like spheres or cylinders. Additionally, smaller objects tend to have higher surface area/volume ratios than larger objects because their surface area increases at a faster rate than their volume.
Therefore, without knowing the specific shapes and dimensions of the objects being compared, it is difficult to determine which has the highest surface area/volume ratio.
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How do fish stay alive when a lake or ocean freezes?
O The frozen ice sheets float on top of the water, providing insulation.
O The cohesive properties of water prevent the lake from freezing.
O The water molecules have adhesive properties.
O The ice sinks, giving the fish a way to escape the water.
Answers
The frozen ice sheets float on top of the water, providing insulation.
do fish stay alive when a lake or ocean freezes
How do fish endure in ice-covered water?Water does not freeze under the higher, ice-covered layer; it stays in its liquid state. In addition, oxygen is imprisoned beneath the ice. Fish and other aquatic creatures can thus dwell peacefully in the frozen lakes and ponds.
Only shallow water bodies will solidify because the ice acts as an insulator, delaying the cooling of the water below. Because there is constantly access to liquid water, even when it is quite cold, higher creatures like fish can thrive.
Fish in this resting condition move very little, their hearts slow down, and their requirements for food and oxygen diminish.
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the condition in which the bones become more porous, brittle, and fragile and are more likely to fracture is called:
Answers
The condition in which the bones become more porous, brittle, and fragile and are more likely to fracture is called Osteoporosis.
Osteoporosis reasons bones to turn out to be susceptible and brittle — so brittle that a fall or maybe moderate stresses together with bending over or coughing can motive a fracture. Osteoporosis-associated fractures maximum usually arise withinside the hip, wrist or spine. Bone is dwelling tissue this is continuously being damaged down and replaced.
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discuss ethical considerations in the study hormones and/or pheromones.
Answers
Ethical considerations in the study of hormones and pheromones include informed consent, confidentiality, proper data use, avoidance of deception, and fair treatment of participants.
In the study of hormones and/or pheromones, there are several ethical considerations that need to be addressed. Hormones and pheromones are vital components of the human body, and they are responsible for several physical and emotional processes. As a result, any study on these components should consider the following ethical considerations:Informed Consent, Before conducting any study on hormones and/or pheromones, it is essential to obtain informed consent from the participants.
Informed consent involves providing the participants with all the necessary information about the study to make an informed decision. It includes informing them about the potential risks and benefits of participating in the study. Confidentiality, The confidentiality of participants in the study of hormones and/or pheromones should be maintained. It includes not disclosing any personal information that can lead to identification.
Also, the participants' data should be kept in secure locations where they cannot be accessed by unauthorized personnel. Proper Use of DataThe data obtained from the study should only be used for the intended purpose. It should not be shared with unauthorized personnel or used for any other purposes without the participant's consent.
Avoidance of Deception, Researchers should avoid using deception when conducting studies on hormones and/or pheromones. It includes not misleading the participants or concealing important information that may affect their willingness to participate in the study. Fair TreatmentIt is essential to treat all participants fairly and without discrimination during the study. No participant should be subjected to harm or ill-treatment, and their rights should be respected.
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why does the size of the ITC peaks decrease over the course of each experiment in Figure 2?
A.Increasing H3 concentration pushes the equilibrium toward dissociation.
B.Fewer binding events occur on BAZ2B as the experiment progresses
C.Less H3 is present in each subsequent injection as the titration progresses.
D.Negative cooperativity exhibited by BAZ2B causes binding to decrease as H3 is added.
Answers
The size of the ITC peaks decrease over the course of each experiment less H3 is present in each subsequent injection as the titration progresses.
ITC stands for Isothermal Titration Calorimetry, which is a technique used to measure the thermodynamic properties of a binding reaction between two molecules. In an ITC experiment, one molecule (the ligand) is titrated into a solution of the other molecule (the receptor) while the heat released or absorbed by the reaction is measured.
If the ITC peaks decrease during the titration, this suggests that the binding affinity between the ligand and receptor is decreasing. Specifically, the peak areas represent the amount of heat that is released or absorbed during each injection of the ligand into the receptor solution. A decrease in the peak areas therefore indicates that less heat is being generated by the binding reaction with each subsequent injection, which implies a weaker binding interaction.
There are several reasons why the binding affinity between two molecules might decrease during an ITC titration. For example, the binding site on the receptor molecule may become saturated with ligand molecules, leading to reduced binding affinity for additional ligand.
Hence, the correct option is C.
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lipids are organic nutrient molecules that multiple choice question. provide energy storage, cell membrane function, and hormone production. contain carbon, hydrogen, and oxygen in a 1:2:1 ratio. store genetic information used to synthesize proteins. provide a cell with structural support.
Answers
The varied class of hydrophobic, nonpolar, and energetically dense chemical compounds known as lipids.
A cell is what?The smallest component of all living things, including human tissue, that is capable of independent existence. The cell membrane, nucleus, and cytoplasm make up a cell's three basic structural components.
What is cellular matter?A cell is a collection of cytoplasm that has a cell membrane surrounding it on the outside. All living things are made up of cells, which are the simplest structural components of living things and are typically microscopic in size. The majority of cells include one or more nuclei as well as other organelles that perform a range of functions.
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this chart shows the compunds that make up air the rectangle on the right is an expanded view of the smallest black wedge of the pie chart what percentage of air is oxygen
Answers
According to the chart, the percentage that has been occupied bhy the oxygen gas is 21 %. Option C
What is the percentage of oxygen in air?Oxygen is one of the major gases that we can be able to find in air. Recall that air is a mixture of gases and all the gases that we can be able to find in air are present to varying amounts in the air.
In the question, we have a pie chart that have been used to show the various percentages of the gases that can be found in air. Given the percentages that we have in the options, oxygen accounts for 21% of air.
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Kendrick holds the rubber blue ball halfway up the ramp and releases ir (figure 1).The ball rolls down the ramp and along the floor beyond the end of the ramp. What force caused the ball to roll down the ramp?
Answers
The force that caused the rubber blue ball to roll down the ramp is gravity. When Kendrick held the ball halfway up the ramp and then released it, the force of gravity began to act on the ball and it started to roll down the ramp.
A ramp is an inclined plane that reduces the amount of force required to move an object to a higher level. The force of gravity, which is an attractive force between any two objects in the universe, acts on objects in the direction of the center of the Earth.
This force causes objects to fall toward the ground. When the rubber blue ball was released from the midpoint of the ramp, it began to move in the direction of the force of gravity, which caused it to roll down the ramp. The force of gravity was able to overcome the ball's inertia and caused it to accelerate down the ramp. Once the ball rolled off the end of the ramp, it continued to move forward due to its inertia.
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What was leeuwenhoek talking about when he used the term animalcules?.
Answers
Answer:
When leeuwenhoek was talking about animalcules. He meant a Microscopic animal or Bacteria