Answer:
DNA is a nucleic acid that carries the genetic instructions but mRNA carries information from the DNA to the cytoplasm where proteins are made
Axons insulated by a(n) _____ are able to conduct impulses faster that those not so insulated.
Answer:
Much like the insulation around the wires in electrical systems, glial cells form a membraneous sheath surrounding axons called myelin, thereby insulating the axon. This myelination, as it is called, can greatly increase the speed of signals transmitted between neurons (known as action potentials).
Explanation:
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what is ecology and the functions
Answer:
It is the study of many things but mainly life process, interactions and adaptations. (The sucession development in the ecosystem)
Explanation:
Hope this helps ^^
What would be some environmental challenges in different parts of the world (i.e.
rainforest, desert, etc.) that would impact a plant's photosynthetic processes ? anyone can help ?
Certain environmental changes such as changes in amount of available carbon dioxide as well as amount of sunlight can affect a plant's photosynthetic processes.
There are several environmental changes that affect the rate of photosynthesis. Photosynthesis is the process by which plants produce their own food in the presence of sunlight by the combination of water and carbon dioxide to yield glucose.
There are two main environmental changes that could affect the rate of photosynthesis and these are;
Changes in amount of sunlightChanges in amount of available carbon dioxideThese changes are capable of increasing or decreasing the rate of photosynthesis.
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Need questions 2-11 done pls
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In mitosis, the daughter cells have the same number of chromosomes as the parent cell, while in meiosis, the daughter cells have half the number of chromosomes as the parent.meiosis gives rise to four unique daughter cells, each of which has half the number of chromosomes as the parent cell.A haploid cell is a germ cell or reproductive cell-like egg or sperm that has a single set of chromosomes and it is represented by n. A diploid cell is a bodily cell or somatic cell that has two sets of chromosomes( one set from the paternal line and one set from the maternal line)From a diploid germ cell 2n =24 double stranded chromosomes, meiosis will produce four gamete haploid cells n =12 single stranded chromosomes.ovumspermGenetic variation is increased by meiosis Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. filter that blocks out unwanted frequencies to a speaker or group of speakersdescribes how different genes independently separate from one another when reproductive cells develop. I d k the last one sorryhope it helps[tex] \: \: \: \: [/tex]
Choose all the answers that apply.
Biomass includes _____.
animal waste
paper trash
animals
sunlight
plants
Global ______ may result in the melting of glaciers, the inundation of wetlands, and the loss of many species that cannot migrate or adapt to new habitats.
Answer:
warming
Explanation:
Answer:
GLOBAL WARMING
Explanation:
global warming is warming up the earth which is causing a lot of destruction. we will all probably get flooded one day
What is ingestion?
A. getting rid of the parts of the food that the body
couldn't use
B. absorbing nutrients from the food that was eaten
into the blood stream
C. breaking down of the food after it has entered the
body
D. putting food and drinks into your body
through which material would you expect sound waves to move fastest
Answer:
Solids
Explanation:
Sound travels fastest through solids. This is because molecules in a solid medium are much closer together than those in a liquid or gas, allowing sound waves to travel more quickly through it. In fact, sound waves travel over 17 times faster through steel than through air.
Deer are herbivores. What effects do you think a high deer population would have on Wesselman Woods?
Answer & Explanation:
Overly large population of any herbivore = them eating large amounts of any type of vegetation. Which means that for the woods there are less grasses/vegetation and it will end up causing other animals to starve therefor messing with the food chain.
Is that what you're lookin for? :)
A high deer population can have several negative effects on Wesselman Woods. These effects include a decrease in plant diversity, damage to trees, increased erosion, and a high risk of disease.
Decreased plant diversity: Deer are selective feeders, and they prefer to eat certain types of plants. This can lead to a decrease in plant diversity in the forest, as deer will eat the most palatable plants and leave the less palatable ones.
Damage to trees: Deer will browse on young trees, which can stunt their growth or even kill them. This can lead to a decrease in the number of mature trees in the forest, which can hurt the forest's overall health.
Increased erosion: Deer can trample on the ground, which can lead to increased erosion. This can damage the forest's soil and make it more difficult for plants to grow.
Increased risk of disease: Deer can carry diseases that can be transmitted to humans and other animals. A high deer population can increase the risk of these diseases spreading.
In addition to these direct effects, a high deer population can also have indirect effects on Wesselman Woods. For example, a decrease in plant diversity can lead to a decrease in the number of insects and other animals that depend on those plants. This can have a cascading effect on the entire ecosystem.
It is important to manage the deer population in Wesselman Woods to prevent these negative effects. This can be done through a variety of methods, such as hunting, fencing, and altering the forest's habitat.
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How does reproduction in humans compare to reproduction and other animals such as fish, birds and reptiles?
Answer:
It compares because all of them reproduce the same way with varied offspring instead of identical.
When a plant fertilizes a plant of a different species, it results in what?
A.
A sterile plant
B.
Cross-pollination
C.
Hybridization
D.
A new species
Answer:
When a plant fertilizes a plant of a different species, it results in (B) cross-pollination.
I hope this helped at all.
Choose the correct order for the formation of a recombinant organism and the expresssion of the
desired product.
I’m stuck on this one any advice?
The order for rDNA is to identify a target gene, select a plasmid, use a restriction enzyme, gene insertion, use ligase, introduce the recombinant DNA and detect recombinant cells. rDNA involves genetic recombination.
Recombinant DNA (rDNA) technologies are used in molecular biology laboratories to create chimeric DNA molecules containing nucleotide sequences from different species.
Recombinant DNA techniques can be used to identify and sequence genes, as well as to discover gene function.
The sequential steps of rDNA technologies are as follow:
Identify a gene of interest.Select a DNA plasmid to be used.Use restriction enzymes to cleave the plasmid DNA.Introduce the gene of interest in the plasmid.Use ligase enzymes to join both nucleotide sequences.Introduce the recombinant DNA molecule into the host cell.Detect and replicate the cells containing the desired recombinant DNA molecule.Learn more in:
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In which location would light travel at the highest speed?
O A. In a swimming pool
B. Within a glass fiber
O C. Within a diamond
O D. Between the Sun and Earth
Answer:
D. Between the Sun and Earth
Explanation:
It travels fastest in vacuum So I’m making an educated gas and saying it’s D I could be wrong though.
Answer:
D. Between the Sun and Earth
Explanation:
quiz
What is the difference between diffusion and osmosis?
What makes a membrane semipermeable?
What characteristics of a molecule affect whether it can pass through the plasma membrane of a cell?
In the simulation, when protein molecules were evenly distributed on both sides of the membrane, was the solution isotonic, hypertonic, or hypotonic?
Which direction was water flowing?
In the simulation, when protein molecules were more highly concentrated on the inside of the cell than outside of the cell, was the solution isotonic, hypertonic, or hypotonic?
Which direction was water flowing?
Why is it important that the plasma membrane surrounding cells is semipermeable?
What would happen if it were not semipermeable?
1) Diffusion : Is the movement of molecules / ions from a region of higher to lower concentration. It may or may not occur across a semi permeable membrane.
In diffusion there is no challenge involved as it is along the concentration gradient, but in active transport movement of molecules occur against concentration gradient ie; from lower to higher concentration.
2) For active transport, energy is vital for movement, in this case protein molecules function as molecular pumps to enable the cell accumulate glucose/ions, against concentration gradient. Here metabolic energy ATP is required.
3)Facilitated diffusion is a type of passive transport in which ions/molecules cross the semi permeable membrane because permeases present in the membrane facilitate the transport.
Like simple diffusion facilitated diffusion doesn't require metabolic energy and simply occurs across the concentration gradient.
4) Osmosis : is movement of water from hypotonic solution (lower concentration) to hypertonic solution (higher concentration) through a semi permeable membrane.
The cell membrane being permeable to water allows to and from movement of water molecules along the concentration gradient.
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Your answers may vary, but these sample answers are a model to follow.
Diffusion is the process of a substance moving from an area of high concentration to an area of lower concentration. Osmosis is a type of diffusion where water moves across a semipermeable membrane still from an area of high concentration of water to an area of lower concentration of water. This corresponds to water moving from an area with a low concentration of solute to an area with a higher concentration of solute.
A semipermeable membrane allows some substances to pass through it.
The plasma membrane of a cell allows small uncharged molecules to pass through it, but not large molecules and not charged ions.
The protein molecules were evenly distributed on both sides of the membrane, so this solution was isotonic.
In an isotonic solution, water moves both in and out of the cell, which was observed in the simulation.
The protein molecules were more highly concentrated on the inside of the cell, so this solution was hypotonic.
In hypotonic solutions, water moves into the cell to help dissolve the higher amount of solute inside the cell, which was observed in the simulation.
A semipermeable cell membrane is important to allow some molecules, like proteins, to be more highly concentrated inside the cell than outside the cell. If the cell membrane were permeable, the molecules on the inside of the cell would exit the cell and be evenly distributed in the cell and in its environment.
If the cell membrane were not permeable at all, the cell would not be able to receive nutrients from its environment.
Diffusion and osmosis has one difference which is the presence of semi-permeable membrane.
What is the difference between diffusion and osmosis?Diffusion is the movement of particles from an area of higher concentration to one of lower concentration while on the other hand, osmosis is the movement of particles from a semipermeable membrane.
Cell membrane is selectively permeable which only allows some molecules inside the cell because of its structure. So we can conclude that diffusion and osmosis has one difference which is the presence of semi-permeable membrane.
When protein molecules were evenly distributed on both sides of the membrane, the solution will be isotonic because of the same quantity on both sided. There is no movement of water in the body.
When protein molecules were more highly concentrated on the inside of the cell than outside of the cell, the solution will be hypotonic because of the less amount of water in the body.
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Answer:
- 1). Diffusion is the process of a substance moving from an area of high concentration to an area of lower concentration. Osmosis is a type of diffusion where water moves across a semipermeable membrane still from an area of high concentration of water to an area of lower concentration of water. This corresponds to water moving from an area with a low concentration of solute to an area with a higher concentration of solute.
- 2).
a). A semipermeable membrane allows some substances to pass through it.
b). The plasma membrane of a cell allows small uncharged molecules to pass through it, but not large molecules and not charged ions.
- 3).
a). The protein molecules were evenly distributed on both sides of the membrane, so this solution was isotonic.
b). In an isotonic solution, water moves both in and out of the cell, which was observed in the simulation.
- 4).
a). The protein molecules were more highly concentrated on the inside of the cell, so this solution was hypotonic.
b). In hypotonic solutions, water moves into the cell to help dissolve the higher amount of solute inside the cell, which was observed in the simulation.
- 5).
a). A semipermeable cell membrane is important to allow some molecules, like proteins, to be more highly concentrated inside the cell than outside the cell. If the cell membrane were permeable, the molecules on the inside of the cell would exit the cell and be evenly distributed in the cell and in its environment.
b). If the cell membrane were not permeable at all, the cell would not be able to receive nutrients from its environment.
how can you prepare a balanced ration for pigs from locally available ingredients ?
Answer: Feed your pigs that are being weaned off of their mother's milk, a special mix of food until they are about 10 to 12 weeks old. Then create a feed mix that is comprised of 76 percent corn, 12 percent skim milk powder, 6 percent soybean meal, 6 percent calcium and protein, and also 0.2 percent salt.
Explanation:
as energy is passed through the food chain some of the energy is lost as heat what is the approximate amount of energy that is passed from one tropic level to the next
75%
50%
10%
15%
Which cell would have a better chance for survival, one that is 1×1×1 cm or one that is 4×4×4 cm?
Answer:
which cell would have a better chance for survival that is 4*4*4cm
which involves transport proteins?
A. Osmosis
B. Diffusion
C. Active transport
D. Passive Transport
Answer:
C
Explanation:
Which of the following best describes the carbon cycle as a whole?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
the flow of carbon through the trophic levels of an ecosystem
(Choice B)
B
the flow of carbon between inorganic and organic sources in the environment
(Choice C)
C
the flow of carbon from rocks on land to oceans during weathering
The flow of carbon between inorganic and organic sources in the environment is best description of the carbon cycle as a whole. Thus, option B is correct.
What is carbon cycle ?It is the process in which carbon compounds are interchanged among the biosphere.
For example the elemental form of carbon such as diamond and graphite in a combined state are mostly found as carbonates and as carbon dioxide gas.
It act as a blanket over our earth, by balancing the energy and also absorb sun's long wave length radiation.
It also involve in plant photosynthesis, bioaccumulation of carbon occur in animal body by consuming plant material, after the death of the animal it can decomposed and carbon is released back into the atmosphere.
The carbon which is not released back will form fossil fuels.
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The sentences below contain one advantage statement and one disadvantage statement. To form a strong basis for debate, both statements must be true and both statements must make valid points.
Which statements best debate the advantages and disadvantages of using renewable energy sources, such as hydropower, solar energy, or geothermal resources?
Choose the correct answer.
Solar energy is extremely inexpensive to harvest. Solar energy is available everywhere on the planet.
The use of geothermal energy produces enormous amounts of pollution. The technology required to collect thermal energy is relatively inexpensive.
Geothermal energy is more renewable than solar energy. Hydropower can change flowing water from a renewable energy resource to a nonrenewable resource.
The use of hydropower requires the construction of dams that change the ecology of the river. Hydropower will be available as long as the river continues to flow.
Answer:
maybe solar energy
Explanation:
a
9. It is difficult to burn a heap of green leaves but dry leaves catch fire easily.
Explain.
Answer:
Green leaves have water wich makes them hard to burn
Explanation:
Dry leaves have no relaining water in them, whick makes them very succeptible to fire, whereas the green leaves are green and therefore still have water in them. This presence of water makes them more resistant to fire.
How can fat loss and cellular respiration help if you eat more than 6-9 teaspoons of sugar a day?
Answer:
For those who eat a well-balanced diet and have no metabolic disorders, excess dietary carbohydrates are converted by the liver into complex chains of glucose called glycogen. Glycogen is stored in liver and muscle cells and is a secondary source of energy to freely circulating blood glucose.
what evidence supports Hess's theory of seafloor spreading?
Answer:
Evidence of Sea Floor Spreading Harry Hess’s hypothesis about seafloor spreading had collected several pieces of evidence to support the theory. This evidence was from the investigations of the molten material, seafloor drilling, radiometric age dating and fossil ages, and the magnetic stripes.
Explanation:
(winks and runs off)
Which of the following is the reason
that viruses aren't considered alive?
A. they can grow and develop on their own
B. they can metabolize
C. they can't reproduce on their own
D. they can't move on their own
Answer:
they can't reproduce
Explanation:
Viruses rely on the cells of other organisms to survive and reproduce, because they can't capture or store energy themselves. In other words they cannot function outside a host organism, which is why they are often regarded as non living thing
Match the event with the type of environmental damage it causes.
1) human population boom
2) industrialization
3) driving cars
A) desertification
B) river pollution
C) global warming
Answer:
1) goes with A)
2) goes with B)
3) goes with C)
Explanation:
1- human population boom increase desertification by doing things that harm the earth and increase the degradation of land in dry areas.
2- Industrialization is the development of industries in a country or region on a wide scale. This causes chemicals and trash to get into the water stream.
3- Cars emit gases that warm the atmosphere.
Why don't people's cells starve from lack of glucose while they are fasting
Which statement accurately describes dark matter?
It is the same as dark energy.
It is well understood by scientists.
It does not emit electromagnetic radiation.
O It can be observed by shifts in red and blue light.
The third one, it can be observed by shifts in red and blue light
Answer:
3rd one because it is right bule amd red
A large, dense-core vesicle found in the axon terminal is likely to contain:
A. Synthesis peptides
B. Neurotransmitter receptors
C. Enzymes that degrade transmitter molecules
D. Peptides
Answer:
D. peptides
Explanation:
Summarize the following paragraph that explains the fluctuations in the graph
Which type of transport is shown
this diagram?
Endocytosis
Ion pump
Exocytosis
Facilitated Diffusion
I need the Answer ASAP
Answer:
Ion pump
Explanation:
1. Facilitated diffusion is a passive transport and doesn't require energy, so it cannot be the answer
2. Endocytosis and exocytosis both involve vesicles (not proteins), but these aren't seen in the image
Considering the above, it must be ion pump.