Answer:
Before the cell enters meiosis, the chromosomes in a cell are duplicated (during the interphase). In meiosis I, the chromosomes condense along the center of the nucleus and pair with their homologues during crossing over. Next, the pairs of chromosomes separate and move to opposite ends of the cell.
Explanation:
The purpose of a controlled experiment is to allow a scientist to isolate and test?
A a conclusion
B many data
C several variables
D a single variable
As human populations have changed over the years, people have altered the course of rivers and other waterways to better suit their needs. one approach has been through the damming of certain rivers. over time, many people question whether this effort has been beneficial. what are the negative impacts of damming a river that are being assessed?
dams allow more water to flow into nearby reservoirs, increasing the chances of disease transmission.
dams cause increases in salmon populations because more water is available for them to live in.
dams reduce salmon stocks, which reduces revenue and overall whale populations.
dams allow for invasive species to move around more easily, which reduces biodiversity.
Dams allowing more water to flow into nearby reservoirs thereby increasing the chances of disease transmission is its negative impact and is denoted as option A.
What is a Dam?This is a form of barrier which restricts the flow of water for different reasons such as reservoirs, electricity generation etc.
Since the water flows to reservoirs in close proximity, it increases the risk of disease transmission such as malaria etc.
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7. The picture below shows a common angiosperm. Name three adaptations this plant has that allow it to live on land. (6 points)
The three adaptations that angiosperms have is attractive aspects of flowers, such as aroma and colors, are artifices created by angiosperms.
What are the adaptations of angiosperms?There are also fruits with adaptations that allow them to be dispersed by the wind; others that have structures that make them able to float on water, being carried by currents over long distances; or that allow them to stick to the fur of animals and be moved to new regions.
In this case, baspects of flowers, such as aroma and colors, are artifices created by angiosperms to attract pollinating animals, such as bats, bees, birds, etc. These adaptations are a major survival advantage over other plant groups.
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The diagram below represents changes in the types of plants growing in the same area during four different time periods. Different types of plants have been labeled for each time period. This change in plant types over time is an example of
Answer:
A. Ecological Succession
Match the item with its misuse for profit. 1. ivory 2. skin 3. landscape 4. trophy 5. pets cactus rare birds elephant alligator lion
Answer:
1. Ivory-elephant
2. Skin-alligator
3. Landscape-cactus
4. Trophy-lion
5. Pets-rare birds
Explanation:
Good morning! here's the new question.
Q.1) Explain these chemical reaction in one Line:
1)Dopamine-
2)Oxytocin-
3)Serotonin-
Explanation:
Tyrosine is modified by tyrosine hydroxylase to form DOPA.Oxytocin binds to oxytocin receptors in the uterine myometrium, which triggers the G-protein coupled receptor signal transduction cascade that causes increased intracellular calcium concentrations.Serotonin is a result of tryptophan, a component of proteins, combining with tryptophan hydroxylase, a chemical reactor.Draw the structure of the organic product formed when the given compounds undergo the three‑step reaction sequence indicated
The structure of the organic product formed when the given compounds undergo the three‑step reaction sequence indicated is 1,4-dibromobutane.
What is the malonic ester synthesis?It is a chemical response wherein diethyl malonate or any other ester of malonic acid is alkylated on the carbon alpha (at once adjacent) to each carbonyl groups, after which transformed to a substituted acetic acid.
The products of diethyl malonate and 1,4-dibromobutane withinside the presence of moles of sodium ethoxide accompanied through acidification and warmth offers a compound C6H10O2.
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Neurological injury can result in a variety of abnormal breathing patterns. Predict which structures, when injured, might lead to altered breathing. For each, discuss the type of breathing pattern that might result from the injury.
Injury to the part of the brainstem can dramatically alter breathing patterns.
What is Injury?An injury may be defined as a situation of being injured, hurt, or damaged physically.
The type of breathing pattern that might result from the injury depends on the areas of the brain which affect by severe hurt or damage.
Therefore, it is well described above.
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What information can a scientist learn directly from a single fossil?
A. How the organism is related to organisms on Earth today
B. What the organism looked like
C. How long the organism lived
D. How many offspring the organism produced
SUBMI
Answer:
How long the organism lived
How long does it take for an embalmed body to decompose?.
Answer:
Explanation:
The embalming … body decomposition timeline 24-72 hours after death — the internal organs decompose. 3-5 days after death — the body starts to bloat and blood containing foam leaks from the mouth and nose. 01/02/2007 · The time for an embalmed body to be reduced to a skeleton varies greatly.
What does repetition, reproducibility, precision, accuracy, and replication mean?
Repetition
the act of something repeating over and over again.
Reproducibility
the rate or amount of which an organism is able to reproduce.
Precision
with excessive intent to perfect an action.
"The cake must be iced with precision."
Accuracy
the ability to be accurate; the amount of how accurate something is.
"Archery requires accuracy."
Replication
the act or rate of which an object is copied.
The ____ receive messages from other neurons and send them to the cell body.
A myelin sheaths
B neurotransmitters
C axon terminals
D dendrites
Which of the following is the term
used to describe the division of a
cell's cytoplasm?
A. Mitogenesis
B. Cytogenetics
C. Cytokinesis
D. Mitosis
ANSWER:
CYTOKINESIS
Explanation:
just got it right on edge 2022
27. Why does cutting through the bark of a tree often kill the tree?
Cutting through the bark of a tree would most often kill it because food supplies to certain parts of the tree are cut off.
What does the bark of trees contain?The bark of a tree is made up of two types of tissues:
Dead tissues on the outsideSecondary phloemThe secondary phloem is responsible for conducting synthesized foods from source to sinks.
When the bark of a tree is cut through, the secondary phloem is cut along and food supply to certain parts of the tree is cut off as a result. This often results in the death of the tree.
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If an organism were to die in an environment that had no saprotrophs or detritivores, what would you expect to see if you observed the area 2 weeks later?
A. There would be nothing left, it will have completely decomposed.
B. The body would remain, and be just as it was when it died except for weathering.
C. There will be no difference as compared to an area that has saprotrophs and detritivores.
D. The body would be decomposing at about half the normal speed.
The body would remain and be exactly as it was when it died, with the exception of weathering, as you would expect to see if you visited the area two weeks later. As a result, B is the correct answer.
What are saprophytes?An organism that feeds on dead and deteriorating organic stuff is referred to as saprophytes.
Saprotrophs are decomposers that live on or in dead organic matter and secrete enzymes and nutrients into the ecosystem. Fungi are one such example.
With the exception of weathering, which is removed by air, water, or other agents, the deceased organisms will remain the same without detrivores and saprotrophs.
Thus, the correct option is B.
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After feeding at the surface of the ocean during
the day, many ocean organisms migrate to deeper
waters. While there, they release ammonia in
their urine. Many bacteria use the nitrogen from
the ammonia as they make amino acids, which
eventually end up in food chains on both land
and water. These amino acids may even be used
in humans. Which statement best explains these
observations?
(1) Chemical elements, including nitrogen, pass
through food webs and are combined and
recombined in different ways.
(2) Chemical elements, including nitrogen, are
removed from food webs and eliminated
from ecosystems.
(3) Nitrogen is transferred directly from bacteria
to humans.
(4) All elements in the ocean remain there and
are not transferred to other ecosystems.
There are a population of oysters that move into the shallow water. The light colored oysters blend in with the rocks. The dark colored oysters blend in with the shadows cast by the rocks. What types of selection will this population experience? Use the diagrams below to help make your decision. A) directional B)stabilizing C) disruptive D) all the above
Answer: I believe disruptive
Explanation: I believe
What would a fuel cell vehicle use for fuel? What is the primary waste product?
A • A fuel cell combines oxygen from the air with hydrogen. The primary waste product is water.
B •A fuel cell separates oxygen from the air. The primary waste product is hydrogen
C • A fuel cell combines oxygen from the air with water. The primary waste product is hydrogen
D • A fuel cell separates oxygen from water. The primary waste product is hydrogen.
Bloodborne pathogens may enter your system through.
B. What is a problem with partial DNA samples? In your answer, include how databases
relate to this problem.
Answer:
Partial profiles will match up with many more people than a full profile. And even full profiles may match with a person other than the culprit. Further complicating matters, a single DNA profile might be mistakenly generated when samples from multiple people are accidentally combined.
Explanation:
Answer:
Partial profiles will match up with many more people than a full profile. And even full profiles may match with a person other than the culprit. Further complicating matters, a single DNA profile might be mistakenly generated when samples from multiple people are accidentally combined.
Explanation:
Crossing over between non sister chromatids during meiosis is significant in heredity
Crossing over is the main event in meiosis and heredity as it leads to genetic variation.
What is genetic variation?Genetic variation is the changes that take place in the genes of individuals that can lead to the formation of new characters.
it generally occurs in meiosis specifically during crossing over.
Thus, it can be concluded that crossing over between non-sister chromatids during meiosis is significant in heredity as it leads to genetic variation.
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What is TRUE about chromosomes?
A. They are found outside the nucleus of each cell
B. They contain genetic material
C. They are shaped like a double helix
D. There are 30,000 chromosomes on each gene
Answer:
B.
Explanation: not d or c
they are found INSIDE of the nucleus and not outside
so b
PLEASEE help fast!!!!!!!
Answer:
I think its fourth one
Explanation:
4 th one only guess
The left and right cerebral hemispheres are connected by the group of answer choices fornix. septum. cerebral commissures. cerebral ligaments. arcuate fasciculus.
he left and right hemispheres are connected by the cerebral commissures. Thus, the correct option is C.
What is cerebral commissures?Three tracts of nerve fibers or axons connect the right and left cerebral hemispheres, and these are referred to as commissures cerebral.
The corpus callosum, anterior commissure, and posterior commissure are three transverse nerve fiber bundles that connect homologous parts of each hemisphere.
The corpus callosum, also known as the great cerebral commissure, is the largest, connecting the majority of the cerebral hemispheres and allowing the cerebral cortex to function as a whole.
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What is neomycin and polymyxin b sulfates and dexamethasone ophthalmic ointment used for.
Answer:
treat eye infections and inflammation, including conjunctivitis and chronic anterior uveitis
In a food weh, which type of organism receives energy from the other three types?
Answer:
decomposers receive energy from the other three types
Explanation:
HEllo ! please help me ! will give brainle with 20 points
Name and/or describe as many human body systems as you can. what is the function of each body system and what are some of the major organs that are part of each body system?
Answer:
The endocrine system is a collection of specialised organs (endocrine glands) scattered throughout the body that act to produce hormones.
Explanation:
which of the following statements best describes how biological science has developed over time
Answer:
A is wrong, because that fact just simply is not true. There have been several other raced men and some women as well that made important contributions to science.
B is correct, because science isn't attributable to just the last couple of hundred years. In ancient times, people developed astronomy and medicine. This is also correct because it names females as part of the scientific contributions to society.
C is incorrect, because this fact is also completely false. Lots of important scientific discoveries have been made from before that, such as the invention of electricity (somewhat useful today I would guess:\) in 1879, which is much longer than 100 years ago.
D is also incorrect, because scientific knowledge is changing constantly, every minute, growing and expanding and changing to accomodate new knowledge and information that we've discovered.
estions
1. What is selective breeding?
2. Name two characteristics cattle
have been selectively bred for.
3. How can you obtain wheat with
the characteristics you want?
4. The table on the right shows the
characteristics of two chickens,
Kendo and Bibby. If they have
offspring which characteristics
do you think the farmer would
want from each chicken?
Selective breeding is a technique to obtain offspring with desired traits, characteristics of cattle include meat and height, whereas wheat is obtained by crossing high yield plants.
What is Selective breeding?Selective breeding is a human technique used to obtain descendence (either plants or animals) from a given genetic cross.
This technique (selective breeding) is used in agriculture to obtain wheat with higher grain yields.
Two characteristics of cattle that have been human-driven selected include meat and average size (height).
It is possible to obtain wheat with desired features by crossing plants having desired genes (it is an autogamous plant).
The characteristics of the chickens (Kendo and Bibby) are not found here, but it is possible to select desired phenotypes by crossing them and selecting offspring.
In conclusion, selective breeding can be used to obtain offspring from a given genetic cross expressing desired traits.
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