In preparing a karyotype, a blood sample is centrifuged. The reason for using this device is to
A.
make sure the blood cells are alive
B.
allow the cells to rest before using them again
C.
break up the cells and separate it into parts
D.
smash all of the chromosomes in the cells
Answer: the answer is D
Explanation:Karyotypes are prepared from mitotic cells that have been arrested in the metaphase or prometaphase portion of the cell cycle, when chromosomes assume their most condensed conformations.
Breathing out occurs when the respiratory muscles _____.
relax
dilate
contract
Answer:Relax
Explanation:
In exhalation, the diaphragm moves upward and the chest wall muscles relax, causing the chest cavity to get smaller and push air out of respiratory system through the nose or mouth. Every few seconds, with each inhalation, air fills a large portion of the millions of alveoli.
I need major help! I don't know this
Answer: A. And B.
Explanation:
Trees remove carbon dioxide and taking away trees will not remove carbon dioxide from the atmosphere.
Increases human energy will not help trees grow better then a forest.
please hlep me!!!!!!!!!!!!!!EEEEEEEEEEE!!!!!!!!!!!!EEEEEEEE
Answer:
what question are you even asking
Answer:
is there like a story or more context to go along with this question?
Explanation:
if not, then can't answer.
What is genetic diversity? the diversity of genes between different species the diversity of the genes within a species the diversity of the different places different species live the diversity of the different places the same species lives
Answer:
Genetic Diversity refers to the range of different inherited traits within a species. In a species with high genetic diversity, there would be many individuals with a wide variety of different traits. Genetic diversity is critical for a population to adapt to changing environments.
Answer:
Genetic Diversity Definition Genetic diversity is defined as the sum of different alleles within a species or population. Both the huge number of distinct species and the variety within a species are referred to as genetic diversity. Genetic diversity refers to the diversity of genes within a species. Therefore, it represents a variety of genes within a species. The basic unit of life on earth is the gene.
Explanation:
What are coronary arteries? What are their function? How are they involved in heart disease?
Answer:
Coronary arteries supply blood to the heart muscle. Like all other tissues in the body, the heart muscle needs oxygen-rich blood to function. Also, oxygen-depleted blood must be carried away. The coronary arteries wrap around the outside of the heart. Since coronary arteries deliver blood to the heart muscle, any coronary artery disorder or disease can have serious implications by reducing the flow of oxygen and nutrients to the heart muscle. This can lead to a heart attack and possibly death.
Explanation:
Hope this helps you ^^
What type of weathering would occur in a city with a yearly average temperature of +10 degrees Celsius and precipitation of about 100 cm per year?
Answer:
Moderate chemical weathering
Explanation:
moderate chemical weathering will be the type of weathering
Which statement best explains why cells differentiate in multicellular organisms?
O Cells differentiate to form cells with different DNA that perform different functions.
O Cells differentiate to form specialized cells that make up tissues and organs.
O Cells differentiate to form the cells necessary for reproduction.
O Cells differentiate to create proteins and fat.
Which kind of image can never be projected and forms where light rays appear to originate?
virtual
real
inverted
enlarged
What type of weathering would occur in a location with an average temperature of 15 degrees Celsius and precipitation of about 200 cm per year.
Answer: slight frost action
Describe how the kidney and bladder work together to remove waste from the body.
Answer:
The kidneys make urine by filtering wastes and extra water from blood. Urine travels from the kidneys through two thin tubes called ureters and fills the bladder. When the bladder is full, a person urinates through the urethra to eliminate the waste.
Explanation:
hope it helps
Answer:
Your kidneys filter your blood, separating toxins from nutrients. Vitamins, minerals, nutrients, and proteins return to your bloodstream. Waste products and urine move through your ureters to your bladder. Your bladder stores urine until you use the toilet.
Explanation:
Have a great rest of your day
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Which of the following is true about spores?
Spores are much larger than seeds.
Spores are much larger than seeds.
Spores are not used for plant reproduction.
Spores are not used for plant reproduction.
A. Most flowering plants produce spores.
B. Most flowering plants produce spores.
C. Spores are much smaller than seeds.
D. Spores are much smaller than seeds.
ANSWER QUICKLY PLSSSSS
Explanation:
spores are smaller than seeds and need water in order to reproduce.
What is the result if nucleotides pair incorrectly?
a mutation
cell death
chromosome duplication
a new type of gene
Answer:
a mutation
Explanation:
Wrong nucleotide pair can cause mutation. If mistake is not fixed, it could cause cell death eventually.
What type of weathering would occur in a location with an average temperature of -15 degrees Celsius and precipitation of about 75 cm per year?
Answer there would be slight weathering
Explanation:
its the answer I believe. Forgive me if im wrong.
Which type of mutation has the greater effect - chromosomal mutations or genetic mutations? Explain.
Answer:
chromosomal mutations
Explanation:
Because it changes in the number of chromosomes in a cell or changes in the structure of a chromosome.
Identify two ways in which scientists know the physical characteristics of organisms change over time.
The two ways in which scientists know the physical characteristics of organisms change over time are by examining the fossil record and comparative anatomy of these organisms.
What is comparative anatomy?One way where scientists know the physical characteristics of organisms has changed with time is through examining the fossil record. Fossils are the remains of organisms preserved in sedimentary rock over time.
The studying of fossils helps scientists to compare the physical characteristics of the organisms with modern organisms by observing the differences between them and the changes that occurred over time.
Another way is to go through comparative anatomy which involves comparing the physical structures of different organisms and identifying the similarities or differences in their anatomy that helps scientists to identify the changes and how these changes have affected these organisms.
Therefore, by examining the fossil record and comparative anatomy of these organisms help scientists to know the physical characteristics of organisms that have changed over time.
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please help me with this!!!!!!!!!!!!!!!!!!!!!!!!!1
Approximately what percentage of human energy requirements is currently produced with fossil fuels?
A. 100 percent
B. 80 percent
C. 0 percent
D. 20 percent
Answer:
80% should be it
Explanation:
(This is due today!)
Which hamsters are the parents of the mystery hamster? Include evidence to prove that they are the correct parents.
Explanation:
Here is the answer.....Hope it helps
Paleoecology
Evidence
What it tells us?
8l no
2. shapes of leaf edges
3. tooth marks in fossil shells
4. fossil pollen
Paleoecology is the study of the composition and distribution of past ecosystems, is tooth marks in fossil shells.
What does a paleoecologist do?A Paleoecologist examine the ecosystems of the history.
Through data gathered from fossils and types, examiners can specify the links and connections of living things and their surroundings in the history.
Thus, option "3" is correct, tooth marks in fossil shells.
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You are going to create your own model that shows the movement of matter among plants, animals,
decomposers, and the environment.
Part One
You will create a 3-D model (diorama) or a 2-D model (poster) showing the movement of matter. Your
model must include the following:
• labels of plants, animals, decomposers, and the environment
• descriptions of plants, animals, decomposers, and the environment
Brainstorm ideas about what you want to create. Think about the materials you would like to use and
what you need to gather or buy. Write your list in the space provided.
You can now choose to take a picture and write a description of your model, or record a video of
yourself explaining the movement of matter. If you are writing your answers, follow the next set of
instructions.
Write a detailed description of your model and how it describes that matter is moved from plants,
animals, decomposers, and the environment.
Answer:
Plastic. Out of all the raw materials for 3D printing in use today, plastic is the most common. ...Powders. Today's more state-of-the-art 3D printers use powdered materials to construct products. ...
Resins. ...
Metal. ...
Carbon Fiber. ...
Graphite and Graphene....
Nitinol. ...
Paper...
Explanation:
Answer:
meow
Explanation:
is............................. moving water
How was osmosis involved in causing Clark's seizures?
Osmosis, involved in causing Clark's seizures by exerting pressure on his brain, had an impact on Clark and caused him to experience a seizure.
What is osmosis?Osmosis is a process of distribution of transforming a substance or ions from the lower concentration to the higher concentration region. Osmosis happens against the concentration gradient, so it needs the energy to proceed.
We had to restore balance to the calf's brain and blood vessels in order to stop the seizure. Because Clark had more sodium in his matrix, which caused water to diffuse out of the vessels and into his matrix, osmosis was involved in his seizure.
Thus, due to the increased concentration of Na in the matrix of the brain, osmosis is involved in causing Clark's seizures.
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This is soo over due can someone answer it ASAP it needs to be correct though
Answer:
its C
Explanation:
ps love the pfp lolz
please help meeeeeeeeeeeeeeeee
Answer:
Explanation:
Well when I think of a crater, I usually think of the moon. A crater on earth could also be formed from something hitting the planet. There are also volcanic craters.
Answer:
i need to read the text that goes along with it to answer the question for the text
Explanation:
I dont know who marsha is or what the Craze Climber attraction is.
In preparing a karyotype, a blood sample is centrifuged to separate the blood cells from the plasma. The plasma is discarded and a hypotonic solution is added to make the cells swell. The solution is centrifuged again. A drop of this material is added to a slide, dried, and stained. The slide is viewed and photographed. Based on this procedure where is the best place to discard the plasma?
Answer:
give a call to (512) 272-9387 and ask about energy
Use the term “selectively permeable” in a sentence that
demonstrates its meaning.
Answer:
Explanation:
the cell membrane of plants are selectively permeable
Because it allows only certain substances to enter into the cell
Answer this PLEASE!!!!!!!
Answer:
im pretty sure 16
Explanation:
hope this helps
Answer:
Answer is probably 18
Explanation:
please help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
The text is hecka small sorry i cant help
Explanation:
Answer:
need an explanation for the question
Explanation:
Which structural adaptation will help a plant survive better in the rain forest?
The ability to store more water.
The ability for its flowers to attract pollinators.
The ability to survive cold temperatures.
The ability for water to run off its leaves.
Answer:
A
Explanation:
got it right on edge
Life, Water, Air, and Land
In this activity, you will write a description of the terrarium model you created to represent the
different systems (spheres) of Earth. Make sure to include the words geosphere, biosphere,
hydrosphere, and atmosphere in your description
Answer:Both a terrarium and Earth are closed systems. They are closed because matter, such as soil or water, cannot enter or leave. However, energy can flow into or out of the system. Just as light and heat pass through the glass of the terrarium, sunlight and heat enter and leave the Earth system through the atmosphere.
Explanation: