Answer:
The answers is divison and growth of cells
Explanation:
In a river ecosystem, dissolved oxygen concentrations drop quickly downstream from a point-source input of organic matter into the river. This effect is due to
Answer:
increasing bacterial activity as organic matter decays
Explanation:
that would be your answer
Dissolved oxygen concentrations drop quickly downstream from a point-source input of organic matter into the river due to the breakdown of organic compounds by bacteria.
What is dissolved oxygen?The amount of oxygen dissolved in water is known as dissolved oxygen (DO). The atmosphere and aquatic vegetation provide oxygen to water bodies. Running water, such as a fast-moving stream, dissolves more oxygen than still water, such as that found in a pond or lake.Why does DO concentrations drop quickly downstream?The river's upstream environment is often cold and harsh, preventing organic life from flourishing. However, as you proceed downstream, the riverine environment normally becomes a little calmer, allowing for more oxygen-consuming river life like bacteria, which degrade and absorb oxygen as they are swept downstream producing organic products.A high organic content in water decreases the amount of dissolved oxygen in water.
hence the DO is reduced in downstream due to breaking down of bacterial products.
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What would happen if a cell divides before DNA replication is completed?
An increase in the number of phytoplankton in an aquatic ecosystem is always beneficial. Please select the best answer from the choices provided T F
Answer:
the answer is F
Explanation:
i just took the test and got it right
Answer:
False
Explanation:
trusttttt
What is a medulla? What do forensic scientists use this for?
Answer:
the inward district of an organ or tissue, particularly when it is unmistakable from the external area or cortex (as in a kidney, an adrenal organ, or hair).
"the adrenal medulla produces adrenaline"
What do legal researchers involve this for? Scientific researchers might search for the presence or nonappearance of a medulla, which is a bunch of cells that goes through a hair. The medulla is ordinarily unique relying upon the species that the hair came from, which makes it one method for recognizing creature and human hair.
not easily broken down in the environment
Answer:
Something not easily broken down in biology is referring to a persistent pesticide.
What is the most common inhibitory neurotransmitter in the brain?.
Answer:
GABA or gamma-aminobutyric acid is the most important of the inhibitory neurotransmitters in the nervous system. It is the most abundant of them, and it is distributed throughout the brain and spinal cord.
Explanation:
Besides a radio signal, what would you use to rescue people buried in an avalanche?
Answer:
avalanche transceivers are devices that actively transmit and search for an electronic signal at a limited range. They are specifically designed to locate victims buried by avalanches and are generally regarded as the fastest way to find someone in a full burial. Because of this, they are typically listed first in the three avalanche rescue items skiers need when venturing into the backcountry: transceiver, shovel, probe.
Explanation:
hope this helps
1: Energy is conserved in ecosystems. true/false
2:Matter is conserved in ecosystems true/false
3:Large carbon compounds can be formed from small carbon compounds true/false
4:Cellular respiration happens in the chloroplasts.true/false
Answer:
what happens inside a nucleus in interphase
Answer:
1.true
2.true
3.false
4.true
Explanation:
hope this help
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For your answer, list the genotypes, phenotypes and % chance of each.
I attached the worksheet with the answer
Note it should be Yellow wings and white wings, not just yellow and white
Why are plant cells and animal cells shaped differently?.
How do finches recognize members of their own species?.
Answer:
By the way they look and the songs they sing. How was sorting finches by song? All the finches sing a simular song but you can hear differences and sort them by species.
When a person becomes infected with the influenza virus, cell-mediated immunity is activated. Why would the influenza virus initiate cell-mediated immunity? Describe the process of cell-mediated immunity as it would attack the influenza virus.
Cell-mediated immune reaction involve the destruction of infected cells by cytotoxic T cells, or the ruin of intracellular pathogens by macrophages The activation of naive T cells in reaction to antigen, and their subsequent expansions and differentiation, constitutes a primary immune response.
How does the influenza virus attack the cells?The viruses connect to cells within the nasal routes and throat. The influenza virus's hemagglutinin (HA) surface proteins then lash to the sialic acid receptors on the surface of a human respiratory tract cell.
Thus, Cell-mediated immune reaction involve the destruction of infected cells by cytotoxic T cells, or the ruin of intracellular pathogens by macrophages.
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A patient has a history of poor nutrition. he has skin rashes, bleeding gums, and a cut that hasn’t healed in a long time. what vitamin deficiency most likely caused these symptoms? a. vitamin a b. vitamin b6 c. vitamin b12 d. vitamin c e. vitamin e
A lack of any one of several vitamins — B12, folate (also known as folic acid), or vitamin C — causes vitamin deficiency anemia.
So the answer is D.
Which body parts perform similar functions in different organisms?(A)gills and lungs (B)liver and lungs (C)gills and exoskeleton (D)liver and exoskeleton
what is assimilation and egestion?
Answer:
Assimilation: The process of nutrients being absorbed by each cell of the body in the form of energy. Egestion: Secretion of waste, unwanted and excess substances from the body after food the as been digestion.
Explanation:
Which part of the brain is associated with conscious thought, memory, and personality?.
Answer:
The Cerebral Cortex.
Which phase of the cell cycle takes the most amount of time?.
Answer:
Interphase
Explanation:
When two aqueous solutions that differ in solute concentration are placed on either side of a semipermeable membrane and osmosis is allowed to take place, the water will.
Answer:
The water will move via osmosis to the side of the semipermeable membrane containing the more concentrated aqueous solution.
This movement of water will continue either until the concentrations on both sides of the membrane are equal or until the hydrostatic pressure exerted by the water column on the more concentrated side is large enough to oppose the movement of water by osmosis.
During anaphase, part of the _____________ can be seen attached to the centromere of each sister chromatid as they separate.
mitotic spindle is the answer
During anaphase mitotic spindle is attached at the centromere of each sister chromatid because it attaches the chromosome to the opposite spindle pole.
What is the mitotic spindle?Protein complexes connect microtubules to the chromosomal midpoint (the centromere) (kinetochores). The connected microtubules depolymerize and shorten, causing movement that pushes chromosomes toward centrosomes situated at either pole of the cell.
The mitotic spindle is a structure that separates the chromosomes. The mitotic spindle is composed of multiple long proteins known as microtubules that are connected to a chromosome at one end and to the cell pole at the other.
The anaphase stage in the cell cycle prepares to spare sister chromatids reday for moves it toward the opposite spindle pole.
Therefore mitotic spindle is seen centromere of each sister chromatid as they separate and move toward the spindle pole.
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What does a blade of grass look like under a microscope?.
Relate the greenhouse effect shown in the
figure to global warming and the carbon
cycle. How do humans impact this
relationship?
The greenhouse effect is the trapping of gases in a planets lower atmosphere, causing the planet's temperature to increase over periods of time.
Global warming, or climate change, is usually referred to the human-reduced warming of the Earth.
The carbon cycle is the biogeochemical cycle where carbon is exchanged among the biosphere(the regions of the surface, atmosphere, and hydrosphere of the Earth), the pedosphere(Earth's soil mantle), geosphere(the almost spherical concentric regions of matter that make up the Earth's atmosphere), hydrosphere(the water on the Earths surface), and atmosphere(a layer of gas or gases that envelope a planet).
Humans impact this relationship by using fossil fuels daily. Fossil fuels put carbon dioxide into the atmosphere. Our use of limestone to make things such as concrete and our changing land use also impacts this relationship.
Which is it? 1, 2, 3, or 4
I am not quite sure but I think that it might be # 4. heterotrophic cell
Hope this helps :))
Why do conservation efforts focus on biodiversity hotspots?.
Answer:
hi
Explanation:
By focusing efforts on the total number of species, they allow conservationists to avoid the hard science required to decide which species matter most to ecosystems and the hard choices required to decide which species matter most to us.
The hormone made by adipose tissue that promotes satiety and a sense of fullness, thus reducing appetite is called
Liptin is the hormone made by adipose tissue that promotes satiety and a sense of fullness which reducing appetite.
What is liptin?Leptin is a hormone which is made up of adipose cells that helps to regulate energy balance by inhibiting hunger which in turn reduces fat storage in adipocytes.
So we can conclude that Liptin is the hormone made by adipose tissue that promotes satiety and a sense of fullness which reducing appetite.
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No single neuron receives input from both eyes until the A. magnocellular layer. B. striate cortex. C. parvocellular layer. D. LGN. E. parietal lobe.
No single neuron receives input from both eyes until it is allows by the striate cortex.
What is striate cortex?The striate cortex is the part of the visual cortex that is involved in processing visual information. The striate cortex is the first part of cortical visual area that receives information or input from the lateral geniculate nucleus in the thalamus.
So we can conclude that no neuron receives input from both eyes until it is allows by the striate cortex.
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Alfred Wegener’s explanation for the shifting of the earth is called what?
Answer:
He called this movement continental drift.
Explanation:
1. You and your family are going to the beach because it is summer. However, minutes after swimming, your skin darkens
Along with butterflies, what other insects are in the order lepidoptera?.
Answer:
moths and skippers...
Explanation:
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What hormone, produced in the anterior pituitary gland, works in conjunction with gonadal steroids to promote bone development in males?
The hormone, produced in the anterior pituitary gland, and works in to promote bone development in males is the Luteinizing hormone.
What hormone, produced in the anterior pituitary gland, works in conjunction with gonadal steroids to promote bone development in males?Generally, Hormones are simply defined as chemical runners in your body, there to aid circulation.
In conclusion, The Luteinizing hormone works in conjunction with gonadal steroids to promote bone development in males
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Mira analyzed oxygen and carbon dioxide in inhaled and exhaled air. she found that the percentages of both gases were different in each. what other gas would most likely also have different amounts in inhaled and exhaled air? ozone (o3) hydrogen (h2) water vapor (h2o) sulfur dioxide (so2)
Breathing is the process of inhaling oxygen and removing carbon dioxide. Just like oxygen and carbon dioxide, Water vapor also have different amounts in inhaled and exhaled air.
What is respiration?The process of inhaling oxygen and releasing carbon dioxide and releasing energy is called respiration.
The first step towards respiration is breathing, which is done by inhaling oxygen and exhaling carbon dioxide through nostrils.
The amount of different gases varies in environment.
During breathing amount of inhaled air contains different percentage of oxygen and carbon dioxide as compared to exhalation.
The reason for such variation includes the use oxygen from the inhaled air to release energy and give out carbon dioxide as a byproduct by the cell.
Water vapor is also inhaled and exhaled in different amounts just like oxygen and carbon dioxide.
Thus, the correct option is C.
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Answer:
C ) water vapor (H2O)
Explanation: