Answer:
Meiosis makes two identical cells with the diploid number of chromosomes
Explanation:
In meiosis cell division, cells divide to form 4 different cells with haploid chromosomes. Option D is correct.
What is Meiosis?It is a type of cell division in which cell is divided to form 4 haploid daughter cells.It occurs in the germ cells of the organisms to form sperm and ova.It is completed in 2 phases, meiosis- 1 and meiosis-2. The cells produced by meiosis are genetically different from each other.Therefore, in meiosis cell division, cells divide to form 4 different cells with haploid chromosomes.
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Some students were building a model of a
digestive system. Which choice best
describes a process they should show with
their model?
F Tissues digest food for the organ
system to absorb.
GCells digest food, which is then
absorbed by organs.
Organs digest food by working
together as a system.
(H)
The organ system uses specialized
cells to digest food.
The digestive process is divided into four steps: ingestion, chemical and mechanical food breakdown, nutrient absorption, and expulsion of indigestible food.
What does the digestive process entail?
The digestive process starts as soon as something is chewed. In order for food to pass more easily through your esophagus and into your stomach, saliva, a digestive juice produced by your salivary glands, moistens the food. The carbs in food also begin to be broken down by an enzyme found in saliva.
Motility, digestion, absorption, and secretion are the four fundamental functions of the digestive system. Our digestive system transforms our food into energy that we can use.
The digestive system's initial function is to take in food through the mouth. The "ingesting" procedure must take place before anything else can happen.
The complete question is:
Some students were building a model of a digestive system. Which choice best describes a process they should show with their model?
a) F Tissues digest food for the organ system to absorb.
b) G Cells digest food, which is then absorbed by organs.
c) Organs digest food by working together as a system.
d) The organ system uses specialized cells to digest food.
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How long does it take for an astronaut red blood cell count to return to normal after a mission in space
Answer:
three to four months
Explanation:
The researchers saw that space-related anemia was reversible, with red blood cells levels progressively returning to normal three to four months after returning to Earth.
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brainliest for the brains:)
How many chemically distinct classes of human immunoglobulins are there?
There are 9 classes of protein extracts that help fight off infection.
There are 4 classes of protein extracts that help fight off infection.
There are 2 classes of protein extracts that help fight off infection.
There are 5 classes of protein extracts that help fight off infection.
Answer: Let the experienced one help you out! Read the explanation down below! Brainliest?
Explanation:
There are 5 classes of immunoglobulins in humans, also known as antibodies, that help fight off infections. These classes are IgG, IgM, IgA, IgD, and IgE. Each class has distinct structural and functional properties, and plays a unique role in the immune response.
What do sister chromatids contain?
The sister chromatids consists of genes that are exactly same in both the chromatids. This is because sister chromatids are identical copies of each other.
Chromatid is one of the two parts of a chromosome. Two chromatids of the same chromosome are called sister chromatids because they are identical in nature. The sister chromatids are joined together at the centromere.
Genes are the factors that contain the genetic information of an individual. These are also the basic unit of heredity. There are several genes present in a chromosome of an organism that encodes for a specific information. A gene is actually a part of the DNA strand.
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Who described self-efficacy as "what I believe I can do with my skills under certain conditions?"
a. Maddux
b. Bandura
c. Seligman
d. Zimbardo
Bandura described self-efficacy as "what I believe I can do with my skills under certain conditions.
"What is self-efficacy?
Self-efficacy is the belief in one's own ability to complete tasks and attain goals.
It is a form of self-belief in one's ability to achieve a specific outcome or goal. This belief may stem from prior experience, observing others, or assessing one's own abilities.
What is the importance of self-efficacy?
Self-efficacy has a significant impact on human behavior and motivation.
People who have a high level of self-efficacy are more likely to take on challenging tasks and work harder to accomplish their goals. Self-efficacy can also contribute to increased confidence and reduced stress levels.
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(science)
18 point!
i'll give 5 star,1 thank who do all of this question THANK YOU!!!
Answer:
gravitational
sun 274m/s²
mecury - 3.7 m/s²
earth - 9.807 m/s²
Mars -3.721m/s²
what is the effect of glucagon? what cells release glucagon?
Answer:
Explanation: Your blood sugar won't fall too low thanks to glucagon.
Your pancreas' alpha cells produce glucagon, which is then released in reaction to a reduction in blood sugar, prolonged fasting, physical activity, and meals high in protein.
There is a hormone called glucagon that prevents your blood sugar from dropping too low. Alpha cells in your pancreas produce glucagon. This is released when the blood sugar drops when you fast for a prolonged period of time when you exercise, and when you eat a protein-rich meal.
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Which is an abiotic factor that can be found in a rain forest ecosystem?
OA. Water
OB. Trees
O C. Animals
D. Bacteria
Answer:
I think Trees because abiotic means stuff that doesn't live so yea
let me know if i am wrong.
Explanation:
which of these provided information about animal adaptations to climate change?
a. fossils
b. ice cores
c. tree rings
d. sea-floor sediment
Answer: floor
Explanation:
Fossils are structures which provided information about animal adaptations
to climate change.
Fossils refers to remains of living organisms which have been replaced in the form of rock particles due to its presence in the soil for a long period of time.
The fossils contain an understanding of the structures and characteristics
the animals had which is then compared to its present structures. This helps
to explain how the animals adapted to climate change through changes in
the structure, shape of parts of the body.
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FILL IN THE BLANK. Both gymnosperms and angiosperms are heterosporus: in gymnosperms the pollen and the megaspores are produced in separate __________ while in angiosperms the pollen and the megaspores are produced in separate structures but within the same _________. A. sporangiums, fruit B. ovule, pistel C. pinecones, flower D. gametes, anther
Gymnosperms and angiosperms are both heterosporous; however, while in gymnosperms pollen and megaspore production takes place in distinct structures termed ovules, in angiosperms pollen and megaspore production takes place within the same structure known as the pistil.
What do angiosperm and gymnosperm pollen sacs look like?Gymnosperms have more pollen sacs that make up the male cone than angiosperms, which typically have four pollen sacs in each anther. Numerous archesporial cells, the precursors to microspore mother cells, can be found in the pollen sacs.
Where do gymnosperms create their pollen grains?Gymnosperms produce pollen in macrosporangia cones, which are male cones or pollen cones, whereas angiosperms create pollen in anthers, which are a component of the stamen.
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1.In the case of the West Memphis Three, what type of mistake was made in identifying the trauma found on the bodies
carnivore tooth marks were mistaken for stab wounds
gun shot wounds were mistaken for stab wounds
blunt force trauma was mistaken for carnivore activity at the crime scene
moth holes in the clothing was mistaken for gun shots
2.The abrasions on the skin caused by unburned gun powder striking the skin is called what?
jacketing
stippling
stellate tearing
rifling
3.It is usually very difficult to tell an entrance wound from an exit wound in a gunshot victim.
True
False
4.This individual was dismembered with a large toothed hand saw
True
False
1. In the West Memphis Three case, the mistake that was made in identifying the trauma found on the bodies is A. carnivore tooth marks were mistaken for stab wounds. 2. The abrasions on the skin caused by unburned gun powder striking the skin are called B. stippling. 3. The given statement is false because it is usually easy to tell an entrance wound from an exit wound in a gunshot victim. 4. The given statement is true because dismemberment refers to the act of cutting off or separating body parts from a human body.
When the bodies were discovered, investigators and medical examiners noticed markings on the bodies that they assumed were stab wounds. However, these markings were caused by animal bites rather than stab wounds. The misinterpretation of the markings on the bodies led to a false conclusion that the boys were murdered by human assailants.
The abrasions on the skin caused by unburned gun powder striking the skin are called stippling. Stippling is a pattern of abrasions and bruises that is created on the skin of a gunshot victim when unburned gunpowder particles and other debris from a discharged firearm impact the skin.
It is usually easy to tell an entrance wound from an exit wound in a gunshot victim. An entrance wound is usually smaller and more regular in shape, while an exit wound is often larger and more irregular in shape. individual was dismembered with a large toothed hand saw. Dismemberment refers to the act of cutting off or separating the limbs, head, or other body parts from a human body. In the context of criminal investigations, dismemberment is often used as a means of disposing of a body in order to conceal evidence of a crime.
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what is the ames test? a test to determine the rate of mutation a test to find the cause of mutation a test to screen for mutagenic chemicals a test to determine the phenotype of a mutation a test to determine how to reverse dna mutations
Option B, The Ames test is a test to screen for mutagenic chemicals. It is a test to screen for mutagenic chemicals.
The Ames test is a widely used method to evaluate the mutagenic potential of chemicals, drugs, or environmental agents. It is based on the ability of a substance to induce mutations in bacteria that have lost their ability to synthesize histidine, an essential amino acid. In the test, a suspected mutagenic chemicals substance is added to a culture of the histidine-deficient bacteria, along with a liver extract that simulates the metabolic activation that occurs in mammals. If the substance is mutagenic chemicals, it will cause a genetic reversion in the bacteria, allowing them to grow on a medium lacking histidine, and thus leading to the formation of colonies. The number of colonies formed is an indicator of the mutagenicity of the substance. The Ames test is a simple, inexpensive, and reliable method to assess the potential of chemicals to cause mutations and is used in the safety testing of new drugs, food additives, and industrial chemicals.
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The complete Question is:
What is the Ames test?
A. a test to determine how to reverse DNA mutations
B. a test to screen for mutagenic chemicals
C. a test to determine the phenotype of a mutation
D. a test to determine the rate of mutation
E. a test to find the cause of mutation
why a unit conversion is needed
Answer:
Units can help to show another person the exact amount you have.
Explanation:
what main carbohydrate do grapes have
the main carbohydrate in grapes is sucrose
what event occurs when the cytoplasm divides
Answer:
The cell cycle is defined as the several stages of the Interphase and M phase that regulate the duplication and replication of genetic material. What are the events of interphase?Interphase is defined as the phase of the cell cycle, which is divided into G1, S, and G2 phases.During the phases of interphase, the cell grows in size, replication of genetic material occurs, and the cell prepares itself for division. Centrioles are round-shaped structures, which are present in the cytoplasm and play a crucial role in organizing the microtubules. Thus, the interphase is characterized by the duplication of centrioles
Explanation:
The enzyme that is recruited by heterochromatin protein 1 (HP1) during the spreading phase of heterochromatin formation is histone ______. Multiple choice question. acetyltransferase
The enzyme that is recruited by heterochromatin protein 1 (HP1) during the spreading phase of heterochromatin formation is histone methyltransferase. The correct option is c.
During the formation of heterochromatin, HP1 plays a key role in recruiting various enzymes that modify histones, leading to the condensation of chromatin and the repression of gene expression.
During the spreading phase of heterochromatin formation, HP1 recruits histone methyltransferases, which add methyl groups to histones. This modification can lead to the recruitment of additional proteins that contribute to the condensation of chromatin and gene silencing.
The recruitment of histone methyltransferases by HP1 is just one of many steps in the complex process of heterochromatin formation and maintenance. The correct option is c.
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The enzyme that is recruited by heterochromatin protein 1 (HP1) during the spreading phase of heterochromatin formation is histone ______. Multiple choice question.
a. Histone acetyltransferase
b. Histone deacetylase
c. Histone methyltransferase
d. Histone demethylase
discuss advantages and disadvantages of methods to measure cardiac output (CO)
There are various methods to measure cardiac output (CO), each with its advantages and disadvantages.
Invasive methods, such as thermodilution and Fick's method, provide accurate measurements but are associated with risks and complications. Non-invasive methods, such as echocardiography and MRI, are safer and more convenient but may be less accurate and more prone to errors.
Bioimpedance and pulse contour analysis are less invasive but may require calibration and may be affected by changes in vascular tone and body position. Each method has its own strengths and limitations, and the choice of method depends on the specific clinical situation and the availability of resources.
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What ethical questions exist from using CRISPR technology?
Most ethical discussions about genome editing center on human germline editing because changes are passed down to future generations.
Answer:
Even if editing human genes is ethical, it would certainly cost money to edit your children. With that said, people with more money would be able to create stronger, faster, and smarter children. Anyone without enough disposable income would have normal babies. In essence, the physical capabilities of future people would be split by class. Thus, is it ethical to allow the divide by social class to be exacerbated by gene editing?
a gene that predisposes a woman to breast cancer has been discovered by scientists. women who are tested to see if this gene is present are using what type of genetic testing?
Women who are tested to see if they carry a gene that predisposes them to breast cancer are using a type of genetic testing called predictive genetic testing.
This type of genetic testing is used to determine an individual's risk of developing a particular condition based on their genetic makeup. The test looks for specific genetic mutations that have been associated with an increased risk of developing breast cancer, and if a woman is found to have one of these mutations, she may be advised to take steps to reduce her risk or to undergo more frequent screening for the disease. It is important to note that predictive genetic testing is not appropriate for everyone and should only be done after careful consideration of the potential risks and benefits, as well as counseling from a healthcare professional.
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the histology of tissue how tissues are specialised and adapted to carry out a particular function. using your biological drawing and any other sources showing how tissues are adapted for particular functions, explain each of the following statements: The histology of compact hard bone shows adaptations that are related to the function of: •bone for storage of calcium• the skeleton for support of the body
Answer:
•bone for storage of calcium: the body only gets the calcium it needs through the food you eat, or from supplements. Bones store calcium, a mineral that can be released into the bloodstream when calcium is needed elsewhere in the body.
The amounts of some vitamins and minerals we take in, especially vitamin D and calcium, directly affect the amount of calcium we store in our bones.
• the skeleton for support of the body: bones provide support for our bodies and help give them shape. Although they are very light, the bones are strong enough to support our full weight.
During a biology lab you are asked to look at an animal and
a bacterial cell under a microscope and document what
components they both share in common. Which of the
following is NOT a feature that all cells have in common?
1.Dna
2.cell membrane
3.cell wall
4.cytoplasm
Answer:
2. Cell wall
Explanation:
animals and some other organisms don't have cell walls, unlike plants (which has cellulose cell walls), bacteria (which has murein or peptidoglycan cell walls), etc.
Jet lag is associated with changes to your ; and is best helped by Circadian rhythms; exposure to sunlight Inner ear pressure; chewing gum Circadian rhythms; sleeping when tired Inner ear pressure; ear plugs
Jet lag is associated with changes to your circadian rhythms and is best helped by adjusting sleep patterns according to the new time zone, option C is correct.
Exposure to sunlight can also assist in resetting the body's internal clock. The options of inner ear pressure with chewing gum and inner ear pressure with ear plugs are not directly related to managing jet lag. Instead, the focus should be on regulating circadian rhythms and adapting sleep schedules to the destination time zone. By aligning sleep patterns and exposure to natural light, individuals can minimize the effects of jet lag and facilitate faster adjustment to the new time zone.
Additionally, there are other strategies that can aid in reducing the impact of jet lag. These include staying hydrated by drinking plenty of water throughout the journey, avoiding excessive consumption of alcohol and caffeine, and engaging in light physical activity during the flight or upon arrival at the destination, option c is correct.
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The complete question is:
Jet lag is associated with changes to your______and best helped by_____
A.Circadian rhythms; exposure to sunlight
B.Inner ear pressure; chewing gum
C.Circadian rhythms; sleeping when tired
D.Inner ear pressure; ear plugs and is best helped by
Does psychology use scientific evidence?
YES, psychology uses scientific evidence to draw results and conclude outcomes.
Psychologists employ the scientific method in order to deduce results or conclusions. In psychology, first, the question or hypothesis is stated, then for which a theory is offered, and after that rigorous laboratory or field experiment is constructed in order to test the hypothesis. Psychologists apply the understanding obtained through research to build evidence-based strategies that solve problems and improve lives. Therefore, it is concluded that psychology is based on scientific evidence.
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The chromatin which is made up of the
DNA is found in this part of the cell,
the
cytoplasm
neurone
nucleus
cell membrane
what is the hypothesis and the experimental group
Answer:
where is the picture or what is it talking about?
where does the energy in an ecosystem come from
Answer:the vast majority of energy originate from the sun
Explanation:
Submit
Assuming that Mendel's laws of segregation and independent assortment did not occur correctly in meiosis of a human cell, assess
which statements could apply to the outcome. Select all that apply.
A)
Cancer of the reproductive organs would likely occur.
B)
The resulting gametes could have too few chromosomes.
The resulting gametes could have too many chromosomes.
D
Fertilization of the affected gametes could result in an individual with a
trisomy condition.
E)
Offspring produced by the affected gametes would be more viable with
increased chromosomes numbers.
Genetics
Answer:
B C D
Explanation:
I took the test on usa
Assuming that Mendel's laws of segregation and independent assortment did not occur correctly in the meiosis of a human cell, assess, the following statements could apply to the outcome -
B) The resulting gametes could have too few chromosomes. C) The resulting gametes could have too many chromosomes. D) Fertilization of the affected gametes could result in an individual with a trisomy condition.Mendel's law of independent assortment states that genes do not influence each other with regard to the sorting of alleles into gametes which means every gene, every combination of alleles can occur.
During meiosis, homologous chromosomes are randomly distributed to four daughter cells. Also, chromosomes are segregated or distributed independently of each other.Any error in this can cause an abnormal number of chromosomes in the daughter cells.It can have too few or too many chromosomes such as trisomy and others.Thus, the following statements could apply to the outcome -
B) The resulting gametes could have too few chromosomes. C) The resulting gametes could have too many chromosomes. D) Fertilization of the affected gametes could result in an individual with a trisomy condition.Learn more:
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Procedure
1
2.
3
Place a strawberry in a zip-closure
bag and remove most of the air
before you seal the bag.
Add 2 tablespoons of the DNA
extracting solution
Mash the strawberry through
the bag in your hand. Do not hit
against the table as this might
damage the DNA
4
5
6
Continue mixing and mashing the
bag in your hand.
Place a piece of gauze over the
opening of the cup, securing it
with a rubber band.
Carefully pour the strawberry
mixture into the cup making sure
to catch the solids with the gauze.
7
8
9
27
Take a dropper or spoonful of the
liquid in the cup and place in the
test tube.
Add a dropper for spoonful of the
alcohol to the test tube. Take care
not to tilt or tip the test tube; do
not mix the two liquids.
Observe the line between the
strawberry mixture and the
alcohol.
Explain each step of the process,and the science behind why those steps needs to be completed. Please help I'll give you brainlest
do transported soil have different types of grain particles?
Answer:
Probably Yes
Explanation:
It's being moved so the other particles are most likely being lost so i would say, yes
Which organ system in the human body is responsible for the transportation of nutrients, gases, wastes and blood?
a) cardiovascular system
b) respiratory system
c) excretory system
d) immune system
Answer:
The cardiovascular system delivers oxygen and nutrients to cells and takes away wastes.
I hope this will help you if not then sorry, have a great day :)