Answer:
1 and 3
Explanation:
Answer:
1,3 &4
Explanation:
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3. How do the biotic factors in an ecosystem depend on the abiotic factors
Answer:
biotic factors depend on abiotic factors for survival
Explanation:
Susan has been assigned to build a model of a plant cell. She has many materials to help her build her model: plastic wrap, a plastic sandwich
bag, aluminum foil, different kinds of dry pasta, stiff cardboard, and pipe cleaners.
She selects the stiff cardboard to represent which outside supporting part of the plant cell?
O A. cell membrane
O B. mitochondria
O c. cell wall
D. nucleus
E. vacuole
HELP!
i believe the answer is c, cell wall^^
Cell wall supporting part of the plant cell. So, the correct option is C.
What is Cell wall?A cell wall is defined as the structural layer surrounding certain types of cells present outside the cell membrane which can be rigid, flexible and sometimes rigid. The cell wall provides both structural support and protection to the cell which serves as a filtering mechanism.
Cell wall present only in plants and some fungi, bacteria and algae. The plant cell wall is arranged in 3 layers which are composed of carbohydrates, such as pectin, cellulose, hemicellulose and other small amounts of minerals, which form a network with structural proteins to form the cell wall.
Thus, Cell wall supporting part of the plant cell. So, the correct option is C.
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what are the two primary factors that control biologic productivity in the surface oceans?
The two primary factors that control biological productivity in the surface oceans are nutrient availability and sunlight.
Nutrient availability and sunlight are the main factors that influence the productivity of surface oceans. Nutrients, including nitrogen, phosphorus, and iron, are essential elements for the growth and reproduction of marine organisms. These nutrients support the synthesis of proteins, nucleic acids, and other biomolecules necessary for cellular functions. The availability of nutrients in the surface ocean is influenced by factors such as upwelling, mixing, and atmospheric deposition.
Sunlight plays a crucial role in driving photosynthesis, the process by which autotrophic organisms, such as phytoplankton, convert sunlight into chemical energy. Phytoplankton form the base of the marine food web and are responsible for the majority of primary production in the oceans. Sunlight availability is affected by factors like latitude, season, cloud cover, and water clarity. Deeper waters receive less sunlight, limiting photosynthesis and productivity in those regions.
The interaction of nutrient availability and sunlight in the surface oceans determines the growth and abundance of primary producers, which in turn influences the entire marine ecosystem. Changes in nutrient availability or sunlight availability can have significant impacts on biological productivity and ultimately affect the overall health and functioning of marine ecosystems.
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Stem cells use the same genes as the adult so are less
likely to be rejected. TRUE/FALSE
which of these properties, used alone, would be least useful in identifying most minerals? A color B luster C streak D density
Answer:
A-color
Explanation:
Minerals could have the same color, and you can't depend on color to tell you that.
Answer:
A, color.
Explanation:
Color would be the least useful because minerals are often the same or similar in color. :)
>:( im mad. y am i mad its bc i had to tell a officer that she was 18 and that she was lying saying she was 14 >:(
Answer:
Dangg thats tuff :(
Explanation:
tuff- you should be able to tell by her looks dude
(i know it's a joke-)
~iwa-chan
Show your work (calculations) 0.1 mL of an original sample is diluted into 9.9 mL of water, and then 0.1 mL of this is spread on a plate. 54 colonies grew. What was the original cell density of the sample?
The original cell density of the sample was 540 cells/mL. This was calculated based on the dilution factor and the number of colonies that grew on the plate.
To calculate the original cell density, we need to consider the dilution factor and the number of colonies that grew on the plate.
First, we determine the dilution factor. The original sample was diluted 1:100 (0.1 mL into 9.9 mL), resulting in a dilution factor of 1/100 or 0.01.
Next, we calculate the number of cells in the diluted sample. Since 0.1 mL of the diluted sample was spread on the plate and 54 colonies grew, we can assume that each colony represents one cell from the original sample.
Therefore, the number of cells in the diluted sample is 54 cells.
To find the original cell density, we divide the number of cells in the diluted sample by the dilution factor:
Original cell density = (Number of cells in diluted sample) / (Dilution factor)
= 54 cells / 0.01
= 540 cells/mL.
Thus, the original cell density of the sample is 540 cells/mL.
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the ____________ the resulting pieces of dna, the further they travel on the gel, resulting in a ____________ specific to that individual.
The smaller the resulting pieces of DNA, the further they travel on the gel, resulting in a more specific DNA fingerprint unique to that individual.
This is due to the fact that smaller DNA fragments have less mass and can therefore travel faster and further in an electric field. The resulting band pattern on the gel is used to identify an individual and is the basis of DNA profiling. The more precise the pattern, the more reliable the identification.
The smaller the resulting pieces of DNA, the further they travel on the gel, resulting in a DNA fingerprint specific to that individual. This process is known as gel electrophoresis, where DNA fragments are separated based on their size and charge. The smaller fragments travel a greater distance due to lesser resistance, creating a unique pattern (DNA fingerprint) for each individual.
Therefore, the level of detail in the resulting DNA fingerprint is directly related to the size of the DNA fragments and their migration on the gel.
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The smaller the resulting pieces of DNA, the further they travel on the gel, resulting in a DNA fingerprint specific to that individual.
The longer the resulting pieces of DNA, the further they travel on the gel, resulting in a more specific banding pattern unique to that individual. This is because the smaller fragments move faster through the gel matrix, while larger fragments are slowed down, resulting in distinct bands that can be used for identification purposes. So, in summary, the length of DNA fragments plays a crucial role in determining the specificity of a DNA banding pattern on a gel. I hope this helps!
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The typical order for the major steps of enzyme isolation would be?
The typical order for the major steps of enzyme isolation would be
Homogenization, salt fractionation, column chromatography, Electrophoresis.Proteins called enzymes operate as natural catalysts for cellular non-spontaneous chemical events, starting and accelerating them. Despite their high turnover rates, they are picky and precise in their behavior.
Cell extract preparation, often known as cell lysis, is a stage of the capture phase. It entails liberating the cellular material from the host cells or tissue into an extraction buffer, producing the crude extract while preserving and stabilizing the target protein.The phenomenon known as "salting-out" occurs at very high ionic strengths, where protein solubility declines as ionic strength rises.As a result, salting out can be used to separate proteins according to how soluble they are in salt solutions.One of the most popular techniques for purifying enzymes is column chromatography. The foundation of chromatography is the idea that mixtures of molecules applied to surfaces or solids, and fluid stationary phases (stable phases), separate from one another while moving with the help of a mobile phase.Specific proteins in the blood can be measured using a test called protein electrophoresis. Based on their electrical charge, the test divides blood proteins into several groups.learn more about enzyme isolation here: https://brainly.com/question/22318217
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all of the following mean vessel except: group of answer choices d) vascul/o c) vas/o b) angi/o a) arteri/o
Answer:
arteri/o
Explanation:
Out of the given answer choices, 'arteri/o', 'angi/o', 'vas/o', and 'vascul/o', the term 'arteri/o' does not mean vessel in a general sense. It specifically refers to arteries, the blood vessels that carry oxygenated blood from the heart.
Explanation:The term that does not mean 'vessel' would be arteri/o. In medical terminology, the root 'arteri/o' refers specifically to arteries, which are blood vessels that carry oxygenated blood away from the heart. However, it doesn't refer to a vessel in a general sense. On the other hand, 'vascul/o' means vessel and is used to generally denote the vascular system. 'Vas/o' is another root that refers to a vessel or duct and 'angi/o' means a vessel as well, but it is often used to refer to blood or lymph vessels.
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During interphase of the cell cycle, O DNA recombines o the nuclear membrane disappears sister chromatids move to opposite poles O DNA content essentially doubles O RNA replicates
During interphase of the cell cycle, DNA content essentially doubles, and RNA replicates.
What is cell cycle?The cell cycle is the sequence of events that occurs in a cell to divide it into two daughter cells. The cell cycle is made up of two stages, the interphase and the mitotic phase, with the interphase accounting for approximately 90% of the cycle.The correct statement during the interphase of the cell cycle is that DNA content essentially doubles, and RNA replicates. During interphase, DNA replication and the duplication of other organelles, as well as normal cellular processes, take place.O DNA recombines is not a correct statement during interphase. Recombination usually takes place during the meiosis phase when the cells are divided into sex cells. The nuclear membrane disappears and the sister chromatids move to opposite poles during the mitotic phase, not the interphase.
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in mammals, the presence of four limbs is ________, and hair is ________.
In mammals, the presence of four limbs is tetrapod, and hair is a characteristic feature. It is a unique feature of mammals that sets them apart from other vertebrates. Hair is composed of keratin and is present in different forms such as fur, bristles, and wool, depending on the mammal species.
Apart from hair and four-limbed structures, there are other unique features present in mammals, such as mammary glands, which produce milk to feed their young ones. Also, mammals have a specialized skeletal structure, including the jawbone and ear bones, which are present only in mammals. Moreover, mammals have a diaphragm, a thin sheet of muscle separating the thoracic cavity and abdominal cavity, which helps in respiration.
Tetrapods are the four-limbed animals or vertebrates, which include mammals, birds, reptiles, and amphibians. These animals have four limbs with digits that help in locomotion. The evolution of tetrapods was a significant event in the history of life as it allowed these animals to move to different terrestrial habitats. The tetrapod animals have a well-developed skeletal structure that provides the required support and balance during the movement.
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Four differences between the aorta and vena cava ?
Answer:
Aorta and vena cava are two main types of blood vessels attached to the heart. The main difference between aorta and vena cava is that aorta carries oxygenated blood whereas vena cava carries deoxygenated blood. Aorta is the main artery that leaves the heart through the left ventricle. It supplies oxygenated blood throughout the body. Two types of venae cavae supply blood to the right atrium of the heart. They are superior vena cava and inferior vena cava. Superior vena cava drains deoxygenated blood from the head, arms, and other upper parts of the body while inferior vena cava drains that from the lower parts of the body.
A low pressure system moves across an area. What kind of weather change do you think you can you expect
A low pressure system would cause storms to develop- things like increasing wind speed, higher temperatures.
Please help, it is python
You are holding an egg-balancing race in which each contestant will need one egg. You want to know if you have bought enough dozens of eggs for all the contestants who have registered for the race. Wr
Sure, I can help you with your question! To determine if you have bought enough dozens of eggs for all the contestants who have registered for the race in Python, you can use the following code:```pythoneggs_needed = dozens_needed = eggs_needed // 12if eggs_needed % 12 != 0:
dozens_needed += 1print("You need to buy at least", dozens_needed, "dozen eggs.")```
Here's how the code works:
1. The `input()` function is used to ask the user how many eggs are needed for the race. The value entered is converted to an integer using the `int()` function and stored in the `eggs_needed` variable.
2. The number of dozens of eggs needed is calculated by dividing the number of eggs needed by 12 using the `//` operator, which performs integer division (i.e., it returns the quotient without the remainder). The result is stored in the `dozens_needed` variable.
3. If the number of eggs needed is not a multiple of 12 (i.e., there is a remainder), then one extra dozen of eggs is needed to make up for the remaining eggs. This is accounted for by adding 1 to the `dozens_needed` variable.4. Finally, the result is printed out using the `print()` function, which displays a message telling the user how many dozens of eggs they need to buy.
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Glucagon stimulation decreases which pathway enzymes? Select all that apply. glycogen synthase phosphofructokinase-1 pyruvate kinase glycogen phosphorylase fructose-1, 6-biphosphatase Glucagon stimulates which pathways? Select all that apply. gluconeogenesis glycolysis glycogenolysis
Glucagon stimulation decreases the activity of glycogen synthase and pyruvate kinase enzymes. Glucagon stimulates the pathways of gluconeogenesis and glycogenolysis.
Glucagon, a hormone secreted by the pancreas, plays a key role in regulating glucose metabolism. When glucagon is released, it leads to the activation of certain pathways and the inhibition of others.
Glucagon stimulation decreases the activity of glycogen synthase, an enzyme involved in glycogen synthesis. This inhibition prevents the formation of glycogen from glucose, promoting the breakdown of glycogen and releasing glucose into the bloodstream. Additionally, glucagon decreases the activity of pyruvate kinase, an enzyme involved in glycolysis. This inhibition reduces the conversion of phosphoenolpyruvate (PEP) to pyruvate, limiting the production of pyruvate and promoting other metabolic pathways.
On the other hand, glucagon stimulates the pathways of gluconeogenesis, which is the synthesis of glucose from non-carbohydrate sources, such as amino acids and glycerol. It enhances the conversion of substrates like lactate, amino acids, and glycerol into glucose. Glucagon also stimulates glycogenolysis, the breakdown of glycogen into glucose units, further contributing to the elevation of blood glucose levels.
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A red bloom cell has diameter of 0.008mm. a model of the red blood cell has a diameter of 80mm. What is the scale of the model
Scale of the model: 1:10,000. To find the scale of the model, we need to compare the size of the model to the actual size of the red blood cell. Given that the diameter of the red blood cell is 0.008mm and the diameter of the model is 80mm, we can calculate the scale by dividing the diameter of the model by the diameter of the actual cell.
Scale = Model diameter / Actual cell diameter
Substituting the given values:
Scale = 80mm / 0.008mm
Simplifying the expression:
Scale = 10,000
Therefore, the scale of the model is 1:10,000.
1. Identify the diameter of the red blood cell: 0.008mm.
2. Identify the diameter of the model: 80mm.
3. Use the formula Scale = Model diameter / Actual cell diameter.
4. Substitute the values into the formula: Scale = 80mm / 0.008mm.
5. Simplify the expression to find the scale: Scale = 10,000.
6. The scale of the model is 1:10,000, indicating that the model is 10,000 times larger than the actual red blood cell.
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What factors/enzymes does an mRNA encounter during its "life"?
Numerous enzymes, including polynucleotide phosphorylase, RNase R, RNase E, RNase III, and poly(A) polymerase I, take part in various RNA processing and decay routes.
RNase III, PNPase, and RNase E control the stability of the pnp mRNA. The mRNA schematic displays the pnp coding sequence and the 5′-proximal secondary structure (open rectangle). Auxiliary proteins that bind ribonucleases and control their activity are also known to modulate ribonuclease levels.
The messenger RNA (mRNA) for some proteins can be protected from being destroyed by an enzyme by stress. The reaction could aid in the survival of cancer cells during chemotherapy and radiation treatment. The study looked at PMR1, a freshly identified enzyme.
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The use of sedatives may result in personal injury because they
a. cause motor coordination to deteriorate.
b. enhance motor coordination too much, making people overconfident about their abilities.
c. suppress pain warnings of physical harm.
d. trigger hallucinations such as flying.
The use of sedatives may result in personal injury because they cause motor coordination to deteriorate. So, option A is accurate.
The use of sedatives, which are drugs that depress the central nervous system and induce relaxation, calmness, and sleepiness, can result in personal injury due to their effects on motor coordination. Sedatives can impair coordination, balance, and reaction time, leading to increased risk of accidents, falls, and other injuries. Sedatives can also cause drowsiness and decrease alertness, which can further increase the risk of accidents and injuries, especially when operating machinery, driving, or engaging in other activities that require fine motor skills and coordination.
Therefore, option a. - "cause motor coordination to deteriorate" - is the correct answer.
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As we have discussed, you can view a cell as a microscopic factory. To do its job as a
factory, it must bring raw materials or molecules into the cell, move that material to
where it’s needed and then do the same in reverse for the final products. This
processes that do this movement are called diffusion, facilitated transport, osmosis, and
active transport.
Instructions:
• Write a paper that describes and compares the processes of diffusion, facilitated
transport, osmosis, and active transport.
• Make sure to use examples of each process
Simple diffusion occurs in favor of electrochemical gradients and does not need energy. It includes diffusion, osmosis, and facilitated diffusion. Active transport occurs against the electrochemical gradient, so it needs energy.
What are diffusion, osmosis, facilitated diffusion, and active transport?Diffusion is the pathway of only small molecules that freely move through the membrane by momentary openings produced by the lipid's movements. Diffusion is a slow process that requires short distances and pronounced concentration gradients to be efficient.For instance, oxygen and carbon dioxide move through the membrane by simple diffusion.
Osmosis is the simple passive transport of water molecules that occurs when the cell interior and the environment, separated by the semipermeable membrane, have different solute concentrations. Water molecule freely move from the more diluted side to the more concentrated one.Facilitated diffusion is the transport of hydrophilic molecules that can not freely cross the membrane. Channel proteins and some carrier proteins are in charge of this transport. When uncharged molecules cross the membrane, they do it according to their concentration gradients, going from the more concentrated side to the lower concentrated one. When ions cross the membrane, the process depends on their electrochemical gradient.Examples of substances that undergo facilitated diffusion are Na+, K+, and Ca++.
Simple diffusion and facilitated diffusion are both passive transport processes because they only depend on electrochemical gradients, so they do not need any energy to occur.
Active transport is the transport of molecules that move against the electrochemical gradient, so it does need energy to happen. Molecules move from the lower concentration side to the higher concentration side of the membrane.Carrier proteins are in charge of active transport. The needed energy might proceed from the ATP molecules or the membrane's electric potential.
Examples of active transport are Na+/K+ pump, the H+ pump, and the Ca++ pump.
So the main difference between these types of transport is the necessity for energy, molecules' electrochemical gradients, and molecules' size and charge.
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rank in order of increasing entropy top label: mostmost
Answer:
Since Container A has more molecules (and therefore more randomness) it has the highest entropy. Then, container C is more vibrationally active compared to container B - meaning more disorder and therefore is the next highest in entropy.
Explanation:
The chart shows information about three different embryos early in their development.
Which is best supported by the information in the chart?
Species X and Y are not related to humans.
Species Y and Z are not related to humans.
Species X and Z are related to humans.
Species X and Y are related to humans.
Answer:
Species X and Y are related to humans.
Explanation:
The chart shows information about three different embryos early in their development. The best supported by the information in the chart is that Species X and Y are related to humans. Thus, option D is correct.
What is an embryo?An embryo refers to the early development stage with respect to the multicellular organism. The organism should be again produced se-xually. Moreover, the development of embryonic should be a portion of the life cycle just done after fertilization and continued via when the structure of the body is formed like tissues and organs.
The development of embryonic i.e. used for proof with respect to evolution should be related species that contain the same embroys.The similarities during the embryo stage of development among different animals are due to the expression of ancient genes.
These ancient genes have the same evolutionary origin, thereby they are homo-logous sequences. For example, fish embryos and human embryos express certain homo-logous genes in the embryos stage, thereby leading to the development of gill slit during this stage.
Therefore,Thus, option D is correct.
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this component provides rigid structure and support to the outside of a cell while this substance fills inside the cell.
A cellular "skeleton" like the cytoskeleton exists. It assists the cell in keeping its shape and holds internal cell components like organelles in place.
What is the hard exterior of the cell structure?A cell wall is a thick, rigid layer that surrounds the cell and is located outside the cell membrane. In addition to cellulose and protein, the cell wall also contains other polysaccharides. The cell wall offers structural defense and support.
Ribosomes are they rigid?The ribosome appears to be a flexible, dynamic object, very dissimilar to the manufactured machines that are frequently mentioned in discussions of mechanism, according to a detailed analysis of its structure.
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you are a marathon runner and need energy for tomorrow's race. how would eating pasta (and pie) help your body produce the energy it needs? Be sure to describe what will happen when you are running the race ( and breathing hard).
What did you find difficult about matching the chromosomes?
The presence of organic material in soil makes it more productive for plant growth.
Please select the best answer from the choices provided
T
F
Answer:
True
Explanation:
Organic matter in the soil is called "humus". It is formed by the decomposition of plant material by microorganisms.
It is extremely important for retaining water and nutrients in the soil, both of which are crucial for plant growth and survival. Therefore, organic matter in the soil makes the soil much more "productive."
Define the term scale as it is used in the field of landscape ecology and explain how it can be considered a problem and also an opportunity. Cite your sources.
Landscape ecology, the term "scale" refers to the level or extent at which ecological processes and phenomena are studied and analyzed.
Landscape ecology is an interdisciplinary field that focuses on the relationships between humans and the natural environment, and the scale at which these relationships are studied can vary widely.
One of the challenges of considering scale in landscape ecology is that different scales can provide different perspectives on the same phenomenon.
For example, a local scale might focus on the impacts of a single development project on a small area, while a regional scale might focus on the impacts of the project on the entire region.
This can make it difficult to understand the full extent of the impacts of a given phenomenon, and can also lead to conflicting or incomplete understanding of the issue.
However, considering scale can also be an opportunity in landscape ecology. By examining different scales, landscape ecologists can identify patterns and relationships that may not be apparent at a single scale, .
Additionally, considering scale can help landscape ecologists to identify key leverage points where interventions can have the greatest impact on the system, and can help to inform decision-making about land use and management.
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The graph shows one consequence of urban sprawl. How did urban sprawl
contribute to the change in biodiversity?
Urban Sprawl leads to reduced habitat and fragmentation. Option D
How does Urban Sprawl affect biodiversity?Natural ecosystems are frequently destroyed and fragmented as a result of urban sprawl. Forests, marshes, and other habitats are destroyed when cities grow to make room for new structures, parking lots, and other infrastructure.
The remaining natural areas become fragmented as a result of habitat loss, isolating populations of plants and animals and interfering with their ecological connectedness. Fragmented ecosystems make it harder for species to migrate, reproduce, and obtain suitable resources, which causes biodiversity to dwindle.
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All the different organisms interacting in a pond make up
A community
A population
The water cycle
The habitat
Answer: clean evironment
Explanation:
Answer:
they would make up a population
Explanation:
A bunch of creatures combined in the pool made the, population in the pool.
Explain the negative impact of deforestation, and also 2 ways Humans have made efforts to protect our planet's forestland in a short paragraph (4 or more sentences).
Answer:
See below.
Explanation:
Deforestation, the process of cutting down and clearing forests for other land uses, has numerous negative impacts on the environment. It contributes to climate change by releasing large amounts of carbon dioxide into the atmosphere, as trees absorb carbon dioxide and produce oxygen. Deforestation also leads to soil erosion, loss of biodiversity, and increased frequency and severity of natural disasters like floods and landslides. Additionally, deforestation destroys the habitats of countless species, which can lead to their extinction.
Fortunately, humans have taken steps to protect our planet's forestland. One way is through reforestation efforts, which involve planting new trees in areas where forests have been cleared. Another way is through conservation, which involves protecting existing forests and preventing further deforestation. Governments and environmental organizations have established protected areas and implemented policies and regulations to limit deforestation and promote sustainable land use practices. Additionally, there is a growing movement to promote the use of sustainable products, like recycled paper and wood products from sustainably managed forests, which can help reduce the demand for new products that contribute to deforestation.