5. The water in the Buffalo River flows at an average speed of 4 km/hr. If you and a friend decide to
canoe down the river a distance of 18 km, how many hours will it take?
Answers
Answer:
48km/hr
Explanation:
...............
Related Questions
Why do mountaineers become breathless as they reach high altitudes?
A.
because water vapor concentration decreases as altitude increases
B.
because air pressure increases as altitude increases
C.
because oxygen concentration decreases as altitude increases
D.
because air temperature increases as altitude increases
Answers
Answer:
C. Oxygen concentration decreases as altitude increases
Explanation:
Higher altitudes have lower levels of oxygen and decreased air pressure.
if a plant is infected with a virus that blocks the enzyme atp synthase, the calvin cycle will still be able to produce g3p.
Answers
The plant metabolism is a complex process that requires the coordination of multiple cellular pathways, including photosynthesis and respiration, for the optimal growth and survival of the organism.
A plant cell's primary energy currency is adenosine triphosphate (ATP), which is generated by the enzyme ATP synthase through the process of oxidative phosphorylation, which occurs in the mitochondria. This ATP provides the energy required for the plant to carry out its metabolic processes. However, if a plant is infected with a virus that blocks ATP synthase's enzyme, it cannot produce ATP, and hence, its metabolism and growth are affected.
Nonetheless, the Calvin Cycle is still capable of producing glyceraldehyde 3-phosphate (G3P), even if ATP synthesis is blocked by a virus. Calvin cycle is a biochemical pathway of photosynthesis in which carbon dioxide is converted into organic compounds, with the help of light energy, by the plant's chloroplasts. During the Calvin cycle, carbon dioxide combines with ribulose-1, 5-bisphosphate (RuBP) to form two molecules of 3-phosphoglycerate, which are converted to glyceraldehyde 3-phosphate (G3P) by utilizing energy and reducing power from ATP and NADPH, respectively, which are generated during the light-dependent reactions. These G3P molecules are used to synthesize glucose, starch, and other organic compounds, which provide energy to the plant. In conclusion, the plant's ability to produce G3P by the Calvin cycle, even if the ATP synthase enzyme is blocked, can help the plant to survive and grow under stress conditions like viral infection.
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Select the best response, listing the 3 main steps of cellular respiration in order from beginning to end.
A. Glycolysis, Kreb's Cycle, Electron Transport Chain
B. Electron Transport Chain, Glycolysis, Kreb's Cycle
C. Kreb's Cycle, Electron Transport Chain, Glycolysis
D. Calvin Cycle, Electron Transport Chain, Glycolysis
Answers
Answer:
C
Explanation:
Took this quiz
The three main steps of cellular respiration are in order from beginning to end Krebs's Cycle, Electron Transport Chain, and Glycolysis. The correct option is C.
What is cellular respiration?Cellular respiration is done in the presence of oxygen. In the process, the food material we eat is mixed with oxygen and broken down into small pieces and generates energy. The waste material is then excreted out of the body in the form of carbon dioxide.
Cellular respiration has different processes that occur in a sequence. The Krebs cycle and the electron transport chain take place inside the mitochondria, whereas glycolysis takes place in the cytosol.
Thus, the correct option is C. Krebs's Cycle, Electron Transport Chain, and Glycolysis.
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What can be used to collect and record scientific data
Answers
Answer:
Case Studies, Checklists, Interviews, Observation sometimes, and Surveys or Questionnaires are all tools used to collect data. It is important to decide the tools for data collection because research is carried out in different ways and for different.
Explanation:
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-List examples of organisms from kingdom fungi
-List distinguishing characteristics of organisms in this kingdom
Answers
Example of organisms from kingdom fungi are Mushrooms, Yeasts, Molds, Lichens, etc.
Fungi digest in a unique way, secreting enzymes into their surroundings in order to break down complex chemical molecules and then absorbing the resulting nutrients. Fungi are eukaryotic, which means their cells have a real nucleus as well as membrane-bound organelles.
They are heterotrophic, which means they get their nourishment from their surroundings. They have chitin cell walls, which are polysaccharides that give structural support. Fungi reproduce by the production of spores, which can be generated sexually or asexually.
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trace a drop of blood from the left ventricle of the heart to the wrist of the right hand and back to the heart. now trace it to the dorsum of the right foot and back to the right heart
Answers
Blood goes to your lungs to take in oxygen when it returns to your heart. Each of your hearts has a left and a right ventricle.
What is the role of blood flow through the heart?The heart is a powerful muscle around the size of your hand. It provides your body with oxygen- and nutrient-rich blood every second. With each beat, your heart sends blood through your circulatory system.
Blood is necessary for life. The other tissues in your body obtain oxygen and nutrients through the blood from your heart. Furthermore, it removes waste products like carbon dioxide from your tissues.
Blood is transported by three main kinds of blood vessels are given below,
Arteries carry oxygen-rich blood away from your heart.
The tiny, delicate blood vessels known as capillaries connect veins and arteries.
Veins bring oxygen-poor blood from your body's tissues back to your heart.
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rna polymerase ii by itself does not have a strong affinity for binding dna. select the explanation that describes why cells do not need for rna polymerase ii to have a strong affinity for binding dna for transcription to occur.
Answers
RNA polymerase II by itself does not have a strong affinity for binding DNA due to the requirement of general transcription factors to bind RNA polymerase II to the DNA molecule gives the cell more precise control over transcription (Option D).
What is RNA polymerase II?RNA polymerase II is an enzyme that catalyzes the synthesis of messenger RNA or mRNA during trasncription, which is then used as a template to generate a protein during the process of translation.
RNA polymerase II does not exhibit a strong affinity for binding DNA because this protein binds to different factors during transcription, thereby enhancing the affinity of the protein-DNA interaction during specific stages of the process.
Therefore, with this data, we can see that RNA polymerase II does not exhibit a strong affinity for DNA but it triggers transcription by binding other factors during this process.
Complete question:
RNA Polymerase II by itself does not have a strong affinity for binding DNA. Select the explanation that describes why cells do not need for RNA polymerase II to have a strong affinity for binding DNA for transcription to occur.
A) RNA Polymerase II always works in tandem with RNA Polymerase I or III so that it is not required to have a strong affinity for binding to DNA.
B) Natural selection has not yet had time to work sufficiently to produce an RNA Polymerase that has a strong affinity for binding DNA.
C) RNA Polymerase II binds to the sigma factor, which facilitates its binding to DNA.
D) The requirement of general transcription factors to bind RNA polymerase II to the DNA molecule gives the cell more precise control over transcription.
E) RNA Polymerase II tightly binds to RNA, it is not required to bind to DNA to properly carry out its functions.
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RNA polymerase II by itself does not have a strong affinity for binding DNA due to the requirement of general transcription factors to bind RNA polymerase II to the DNA molecule gives the cell more precise control over transcription (Option D).
What is RNA polymerase II?
RNA polymerase II is an enzyme that catalyzes the synthesis of messenger RNA or mRNA during trasncription, which is then used as a template to generate a protein during the process of translation.
RNA polymerase II does not exhibit a strong affinity for binding DNA because this protein binds to different factors during transcription, thereby enhancing the affinity of the protein-DNA interaction during specific stages of the process.
Therefore, with this data, we can see that RNA polymerase II does not exhibit a strong affinity for DNA but it triggers transcription by binding other factors during this process.
Complete question:
RNA Polymerase II by itself does not have a strong affinity for binding DNA. Select the explanation that describes why cells do not need for RNA polymerase II to have a strong affinity for binding DNA for transcription to occur.
A) RNA Polymerase II always works in tandem with RNA Polymerase I or III so that it is not required to have a strong affinity for binding to DNA.
B) Natural selection has not yet had time to work sufficiently to produce an RNA Polymerase that has a strong affinity for binding DNA.
C) RNA Polymerase II binds to the sigma factor, which facilitates its binding to DNA.
D) The requirement of general transcription factors to bind RNA polymerase II to the DNA molecule gives the cell more precise control over transcription.
E) RNA Polymerase II tightly binds to RNA, it is not required to bind to DNA to properly carry out its functions.
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Which of the following is evidence that cells no longer respond to external factors and may have turned cancerous?
A. New cells replace old or damaged cells.
B. Cell clumps form, crowding existing cells.
C. Dead cells are shed at a more rapid rate.
D. Dormant cells re-enter an active cell cycle.
Answers
Answer:
option C will be the correct answer
Dead cells are shed at a more rapid rate is evidence that cells no longer respond to external factors and may have turned cancerous.
What are the cancer cells?Cancer cells are defined as cells which divide continually, forming solid tumors or flooding the blood with abnormal cells. Cell division is a normal process used by the body for growth and repair.
Sometimes this orderly process breaks down, and abnormal or damaged cells grow and multiply when they shouldn’t. These cells may form tumors, which are lumps of tissue.
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How does competition drive natural selection?
Answers
Answer:
Competition often occurs between members of the same species. This is called intraspecific competition. This is the type of competition that is the driving force behind natural selection within a species. Competition influences natural selection by the finite amount of resources available, those members of species best adapted to take advantage of the resources are more likely to reproduce and pass on their genes to the next generation.
Explanation:
The process that produces the chromosome abnormality represented in the given diagram is known as-
Answers
Answer:
Trisomy at the 21 chromosome
Explanation:
due to aneuploidy which is a form of genome mutation.
Even in aneuploidy, it is polysomy which is the presence of extra chromosomes.
Answer:
21
.......................
A(n) _____ places medication near the nerves in the lower back to "block" pain in a wide region of the body while the person stays awake. Group of answer choices A) Opiate B) Epidural C) General anesthesia D) None of the above
Answers
Answer:
B) Epidural
Explanation:
Epidural administration of medication refer to a method of medicine administration in which a medicine is injected into the lower back.
An epidural works on the nerves that carry pain signals. The patient remains awake and is able to feel touch and pressure. He/she may even be walk around when helped.
The epidural makes the patient not to feel pain in a wide region of the body.
The membrane proteins that maintain the shape of the cell membrane, form cell junctions, and allow cells to attach to the extracellular matrix are ________.
Answers
The membrane proteins that maintain the shape of the cell membrane, form cell junctions, and allow cells to attach to the extracellular matrix are whole proteins, however, to better understand this answer, we need to know that....
Membrane proteinsThe plasma membrane contains proteins that are embedded in the lipid bilayer. These perform several functions in the cell, such as:
Transport of substancesEnzymatic activities and Communication between cells.The amount of proteins and the types found in the membrane are related to the activity exerted by that cell.
The proteins present in the plasma membrane can be classified into two groups:
integral proteins peripheral proteins.Integral proteins are those that penetrate the phospholipid bilayer. Integral proteins capable of completely crossing the membrane are called transmembrane proteins. These may cross the membrane one or more times.
Peripheral proteins, in turn, are those that do not penetrate the plasma membrane, with only a weak connection to the membrane being observed. Because of this, peripheral proteins can be easily dissociated from the membrane.
With this information, we can conclude that integral proteins are responsible for the shape of the cell membrane, they are embedded in the lipid bilayer.
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2. Explain why water is an effective molecule for transporting other molecules around living
organisms.
Answers
Close water molecules are attracted to each other by a relatively low electrical attraction, (negative hydrogen atoms attract positive oxygen atoms in other molecules).
Water is an effective molecule for transporting other molecules around living organisms because it is polar, cohesive, and a solvent.
Polarity means that water molecules have a positive end and a negative end. This polarity allows water molecules to form hydrogen bonds with each other, which gives water its cohesive properties. Cohesiveness means that water molecules stick to each other. This cohesiveness allows water to form droplets and to move up through plants, a process called capillary action.
Solvent means that water can dissolve other molecules. This allows water to transport nutrients and other essential molecules around living organisms. Water is also incompressible, which means that it cannot be squeezed into a smaller space. This incompressibility is important for living organisms because it allows water to transport nutrients and other essential molecules under pressure.
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What produces four daughter cells?
a) meiosis
b) mitosis
c) both of these
d) neither of these
Answers
The correct option is (a) Meiosis
Meiosis produces four daughter cells.
What is Meiosis?Meiosis, often known as "lessening" since it involves a reductional division, is a unique process used by sexually reproducing organisms to produce gametes, such as sperm or egg cells. It comprises two rounds of division, producing four cells with only one copy of each chromosome as a final product (haploid). Additionally, each chromosome undergoes genetic material cross-pollination between the paternal and maternal copies before division, resulting in novel combinations of the genetic code on each chromosome. Later, when a male and a female go through meiosis, the haploid cells they generate unite to form the zygote, another cell with two copies of each chromosome.Learn more about the Meiosis with the help of the given link:
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a. You are using a transmission electron microscope (TEM) to examine the microstructure of a titanium alloy. Explain how the route of the electrons through the microscope lenses changes when you move between ‘image mode’ and ‘diffraction mode’. Illustrate your answer with ray diagrams of the electron path through the objective and projector lenses.
b. You want to take an electron diffraction pattern of a single titanium grain. Explain how you obtain this using an aperture
c. When you examine your titanium alloy in image mode you can see that the Ti grains have a mixture of light and dark contrast. Explain the possible contrast mechanisms acting when:
i. Grain A is tilted and its contrast goes from dark to light.
ii. Grain B is tilted by 10 and its contrast remains dark
Answers
The route of electrons through the microscope lenses changes when moving between 'image mode' and 'diffraction mode' in a transmission electron microscope (TEM).
How does the path of electrons differ in 'image mode' and 'diffraction mode'?The route of electrons through the microscope lenses changes when moving between 'image mode' and 'diffraction mode' in a transmission electron microscope (TEM).
In 'image mode,' the electrons pass through the specimen and interact with its microstructure.
They are then focused by the objective lens onto the projector lens, which forms an image of the specimen on the viewing screen or camera. This path resembles the traditional ray diagram in optics.
In 'diffraction mode,' the electrons pass through the specimen and interact with the crystal lattice. They undergo diffraction as they interact with the crystal planes and form a diffraction pattern.
The diffraction pattern is then projected onto the viewing screen or camera by the objective lens.
To obtain an electron diffraction pattern of a single titanium grain, an aperture is used.
How is an electron diffraction pattern obtained using an aperture?The aperture, also known as the selected area aperture or diffraction aperture, is placed in the image plane of the objective lens.
By adjusting the size and position of the aperture, a selected region of the specimen is illuminated.
This restricts the electrons passing through the aperture to interact with a specific area of the specimen, in this case, a single titanium grain.
The diffracted electrons from the illuminated region then form a diffraction pattern on the viewing screen or camera, allowing the analysis of the crystal structure of the selected area.
When examining the titanium alloy in image mode, the observed contrast between Ti grains can vary due to different contrast mechanisms.
What are the possible contrast mechanisms when observing the titanium alloy in image mode?i. When Grain A is tilted, and its contrast goes from dark to light, it suggests that the contrast is due to the tilting of the grain.
Tilting causes changes in diffraction conditions, altering the number and intensity of diffracted electrons reaching the objective lens.
This variation in diffracted electron intensity results in a change in contrast from dark to light.
ii. When Grain B is tilted by 10°, and its contrast remains dark, it suggests that the contrast is primarily governed by the crystal orientation of the grain.
If the crystallographic orientation of Grain B is such that the diffracted electrons are not efficiently collected by the objective lens, the contrast may remain dark despite the tilt.
These contrast mechanisms arise from the interaction of the electron beam with the crystal lattice and the resulting diffraction effects.
By analyzing the contrast changes, researchers can gain insights into the crystallographic properties and orientation relationships within the titanium alloy.
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what transport moves ions?
- diffusion
- facilitated diffusion
- osmosis
- molecular pumps
- endocytosis
- exocytosis
Answers
Answer:
a facilitated diffusion
Sorry If I'm wrong
Joshua is preparing a report to show the relationship
between average kinetic energy and temperature. Is his
graph accurate? Explain your answer.
Temperature
Average Kinetic Energy
The answer is yea his graph is correct
Answers
Answer:
yes
Explanation: The atoms and molecules that make up a gas are constantly moving. Temperature is a measure of the speed with which they move (more accurately it is a measure of their kinetic energy). The higher the temperature, the faster they move. It is thus produced a greater intensity in the collisions against the walls: the pressure of the container containing the gas increases.In this way, if the graph shows the increase in temperature as well as the increase in speed, yes, it is correct.
Answer:
Yes, his graph is correct because it shows that as the average kinetic energy increases, so does the temperature. This is called a direct relationship.
Explanation:
This is the sample response, lol.
I would change it up a little in your own words, but it's your choice.
Hope this helped!! :)
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Magnetism is always present when electric charges blank.
What is the blank.
I think it is move
So tell me.
Answers
The term that fills the blank in the statement "Magnetism is always present when electric charges blank" is "move."
Magnetism is always present when electric charges move. If there is no movement of electric charges, there is no magnetism. This is an example of one of the fundamental principles of electromagnetism. Moving charges, or current, generates magnetic fields. Conversely, changing magnetic fields create currents, known as electromagnetic induction. Magnetic fields are caused by moving electric charges and are responsible for many everyday phenomena, from the operation of electric motors to the attraction and repulsion of magnets.
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All of the following membrane transport processes require the assistance of 3 protein EXCEPT primary active transport secondary active transpart facilitated diffusion simnple dilfuslon
Answers
Option (D), secondary active transport, is correct. Among the different membrane transport processes, facilitated diffusion, simple diffusion, and primary active transport rely on protein assistance, while secondary active transport does not require proteins.
Membrane transport processes can be classified into active transport, which requires energy, and passive transport, which does not.
Proteins in the membrane play a crucial role in facilitating the movement of molecules, ions, and other substances across the membrane.
Facilitated diffusion, simple diffusion, and primary active transport all necessitate the involvement of proteins to aid in their respective processes.
However, secondary active transport operates differently. It involves the transport of a solute against its concentration gradient, utilizing the electrochemical gradient generated by another solute through primary active transport.
Notably, this secondary active transport mechanism does not require the assistance of proteins.
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which of the following events is most likely to result in conditions suitable for primary succession?
Answers
Answer:
An earthquake , a forest fire , a hurricane and a volcanic eruption.
Explanation:
An earthquake , a forest fire , a hurricane and a volcanic eruption are the events that is responsible for the suitable conditions for primary succession because all the population of animals and vegetation are removed from an area and the new type of organisms is start to living in that new environment. These new organism has the ability to survive that environmental conditions. These events completely removed the population in the environment and provides conditions for primary succession.
Answer:
Volcano eruption
Explanation:
Took the test
Which crossbreeding system produces replacement females through the rotation and produces crossbred offspring?
Answers
Explanation:
walker 53117 hop it helps you
Describe the relationship between photosynthesis and cell respiration.
Answers
Answer:
Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.
Explanation:
Answer:
Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.
Explanation:
Which trait is common to rocks formed from magma trapped inside a volcano?
o less dense
O fine crystals
O coarse texture
O quickly cooled
Answers
Hey! The answer to your question is going to be C, coarse texture. Hope this helps!
The trait that is common to rocks formed from magma trapped inside a volcano is coarse texture. The correct option is c.
What is a volcano?Igneous rocks are formed by the cooling down of hot Lava and Magma that comes out of volcanoes. Because of how hot it is deep below the Earth, some rocks slowly melt and turn into lava, a viscous fluid.
Since magma is lighter than the surrounding solid rock, it rises and gathers in magma chambers. Some of the magma eventually surges through fissures and vents to the Earth's surface.
Magma clings onto the Earth's surface rather than becoming “stuck” there, and when it reaches that area of the planet, it begins to cool and become an extrusive rock.
Therefore, the correct option is c. coarse texture.
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Where does competition for reproduction most likely occur?
Answers
What are some effects of homeostasis based on the environmental stimuli
Answers
Some effects of homeostasis based on the environmental stimuli is sweating during hot days and shivering during cold days.
What is homeostasis?
Homeostasis is the process by which the body maintains a fairly constant internal environment.
Homeostasis helps the body to response to environmental stimuli.
Example of homeostasis in response to environmental stimuli include:
when the weather is cold, the body responds by producing more heatwhen the weather condition is hot, the body respond by producing sweat which helps to cool down the bodyIn conclusion, homeostasis helps the body to maintain internal equilibrium
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microtubules start at the centrosome and then connect to the kinetochores, which are structures at the central region of chromosomes
Answers
Microtubules start at the centrosome and then connect to the kinetochores, which are structures at the central region of chromosomes. The centrosome is the main microtubule-organizing center (MTOC) in most animal cells, whereas plant cells lack a typical centrosome.
The two spindle poles are the central region of a chromosome where a kinetochore is connected. Microtubules are a type of cytoskeletal protein filament that plays a crucial role in the mechanics of cell division.
Microtubules, together with actin and intermediate filaments, form the cytoskeleton, which is the structural framework of the cell. Microtubules also transport vesicles and organelles, support cell shape, and mediate cell signaling.
They are also crucial in cell division, serving as a framework for the mitotic spindle, a structure that segregates chromosomes during cell division.
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Are fingers made of diploid cells or haploid cells?
Answers
Fingers are made from diploid cells. All of the cells in our body are made from diploid cells except in the reproductive cells which are made from haploid cells.
Which of the following is not a lipid?
Asteroid
B cholesterol
C
wax
D cellulose
Answers
Answer:
cellulose
Explanation:
lipids are fats oils or waxes. cellulose is a fiber
Answer:
cellulose
Explanation:
Examples of lipids include fats, oils, waxes, certain vitamins (such as A, D, E and K), hormones and most of the cell membrane that is not made up of protein. Therefore waxes are not the answer.
Steroids are lipids because they are hydrophobic and insoluble in water, but they do not resemble lipids since they have a structure composed of four fused rings. Cholesterol is the most common steroid and is the precursor to vitamin D, testosterone, estrogen, progesterone, aldosterone, cortisol, and bile salts. Therefore steroid and cholesterol is not the answer.
Please answer the question which I attached to this fileQuestion 6
Answers
The relationship between individuals II-5 and II-6 is that they are a couple that has two children. This can be assumed because there is a horizontal line that bonds them from the side, and a vertical line goes down their union to part sideways into two individuals (III-4 and III-5).
what molecule or molecules other than the mrna, if any, are present at the e site or would have just left the e site? give the type and number of any other molecules
Answers
Molecules other than the mrna present at the e site are trna molecules have just left the e site.
small rna molecule transfer rna, often known as trna, is essential for the production of proteins. The messenger RNA (mRNA) molecule and the expanding chain of amino acids that make up a protein are connected by transfer RNA, which is also known as an adapter. every time an amino acid is added to the chain, a particular trna mates with the corresponding sequence on the mrna molecule to make sure the correct amino acid is added to the protein being created. every time an amino acid is added to the chain, a particular trna mates with the corresponding sequence on the mrna molecule to make sure the correct amino acid is added to the protein being created.
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