During cell reproduction, chromatin fibers coil up into structures called chromosomes. Therefore, the correct option is A.
What are chromosomes?Chromosomes are structures made up of DNA and proteins that are found in the nucleus of the cell. They contain genetic information That are responsible for the inherited characteristics of the organisms such as eye color, hair color, height etc.
Chromosomes play a crucial role in cell division, as they ensure the proper distribution of genetic material to the daughter cells.
During cell division, chromosomes are replicated and then separated into daughter cells, ensuring that each cell receives a complete set of chromosome.
The number and arrangement of a chromosome vary depending on the species, but all human cells except the sperm and egg cell contains 23 pairs of chromosomes. Hence, the correct option is A.
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27. If there is a full moon on Sept. 13, When is the next full moon?
1.
How does water behave when it freezes?
Answer:
During freezing, water molecules lose energy and do not vibrate or move around as vigorously. This allows more stable hydrogen-bonds to form between water molecules, as there is less energy to break the bonds...Thus water expands as it freezes, and ice floats atop water.
Explanation:
If an organism has a cell wall, it can only be a ______ cell
Answer:
Plant
Explanation:
Because it has a cell wall
Hurry plzzzz >_<
How are plant and animal cells similar?
Answer:
Plant and animal cells are similar because both are eukaryotic. Every plant and animal cell has a cell membrane and cytoplasm. In addition, nearly all plant and animal cells have a nucleus.
Explanation:
I got it right
where did the extra chromosome in down syndrome come from?
Rooted plants are most likely found in which aquatic zone?
a. pelagic
b. littoral
benthic
d. all of the above
C.
Please select the best answer from the choices provided
Answer:
littoral
Explanation:
A tick lives on a dog by biting into its skin and drinking the blood. The tick gains nutrients from the blood and also sometimes passes on diseases to the dog. The dog loses blood and sometimes gets a disease. What type of symbiosis is this considered?
A scientist investigates two types of cells located in different parts in the
human body. Cell A contains many more mitochondria than Cell B. What is
the best conclusion to make from this observation?
o O
A. Cell A produces more protein than Cell B
O
B. Cell A has a larger vacuole than Cell B.
C. Cell B does less work than Cell A.
O
D. Cell B creates more energy than Cell A.
Answer:
The best explanation regarding the observation of more mitochondria in cell A than in cell B is that cell B does less work than Cell A.
Explanation:
Mitochondria are the organelles in charge of energy production in the cell. Tissues with high energy demand, such as striated muscle, have cells with a large amount of mitochondria, to satisfy this requirement.
According to the observation, if the cell B has less work than the A cell, its energetic demand is lower and the consequence is a smaller quantity of mitochondria in its cytoplasm.
The other options are not correct because:
A and B. The fact that the A cell has more mitochondria is not related to protein synthesis or having larger vacuoles.
D. Cell B does not produce more energy than Cell B because it has fewer mitochondria.
How do scientists use observations
to make predictions?
Answer:
They use hypotheses to guess a result based on what they already know. Observations are used to record the results of an experiment. Predictions are used to have an expected outcome of a test, thinking the hypothesis is correct. Experiments are used to test the hypothesis.
Which statement is true?
O A. Opinions can be scientifically tested.
OB. Scientific theories are absolute and cannot be changed.
OC.
Scientists have learned all they'll ever know about science.
OD.
Facts can be scientifically tested.
Answer: D. Facts can be scientifically tested.
How does the analogy contrast to the cell wall ?
Answer:
An analogy for the cell wall is that thecell wall is like an outer wall along a castle (enclosed compound). The cell wall is a rigid outer barrier.
Explanation:
please mark as brainlist answers
Dr. Kettlewelll predicted that clean forests would have _____________ colored moths, and polluted forests would have _________ colored moths.
Answer:
Kettlewell thought that if natural selection caused the change in the moth population, the following must be true: Heavily polluted forests will have mostly dark peppered moths. Clean forests will have mostly light peppered moths. Dark moths resting on light trees are more likely than light moths to be eaten by birds.
Dr. Kettlewall predicted that clean forests would have light-colored moths and polluted forests would have dark-colored moths. This is an example of natural selection.
What is natural selection?Natural selection is a phenomenon in which the fittest individual is chosen by nature. The animal can live and reproduce in that particular environment. An example is the peppered moth population.
The light-colored moths were found on the light-coloured bark, but their population started to decline after the pollution. In the polluted environment, they were easily chosen by predators. So only dark moths survived because they blended in with the polluted environment.
Following the end of the pollution, light colored moth increased again. Predators had a difficult time identifying the light moth because it blended in with the unpolluted environment. Hence, their population increases in unpolluted areas.
Hence, Dr. Kettlewall predicted that a clean forest would have a light-colored moth and a polluted forest would have a dark-colored moth.
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Lawrence is a long distance runner on the school’s track and field team. Proper nutrition is very important for athletes so Lawrence wants to make the right food choices before a big track meet.
Given what you know about how food is broken down to provide energy in the body, which is the best choice for Lawrence to eat before his event?
a supplement bar that provides 500 Calories composed of complex sugars
a candy bar that provides 500 Calories composed of simple sugars
a protein shake that provides 500 calories composed of complex sugars
a fruit smoothie that provides 500 calories of simple sugars
Answer:
a supplement bar that provides 500 Calories composed of complex sugars
Explanation:
Got it right on edge
How is mRNA or protein synthesis in general related to communication?
Answer:Three general classes of RNA molecules are involved in expressing the genes encoded within a cell's DNA. Messenger RNA (mRNA) molecules carry the coding sequences for protein synthesis and are called transcripts; ribosomal RNA (rRNA) molecules form the core of a cell's ribosomes (the structures in which protein synthesis takes place); and transfer RNA (tRNA) molecules carry amino acids to the ribosomes during protein synthesis. In eukaryotic cells, each class of RNA has its own polymerase, whereas in prokaryotic cells, a single RNA polymerase synthesizes the different class of RNA. Other types of RNA also exist but are not as well understood, although they appear to play regulatory roles in gene expression and also be involved in protection against invading viruses.
Explanation:
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Please help me as soon as possible (T-T)
proved that dna Carries genetic information
Answer:
Hope it helps...
Explanation:
The Hershey–Chase experiments were a series of experiments conducted in 1952 by Alfred Hershey and Martha Chase that helped to confirm that DNA is genetic material. Hershey and Chase and subsequent discoveries all served to prove that DNA is the hereditary material.
Genetic information is carried in the linear sequence of nucleotides in DNA. Each molecule of DNA is a double helix formed from two complementary strands of nucleotides held together by hydrogen bonds between G-C and A-T base pairs. In eucaryotes, DNA is contained in the cell nucleus.
There is an enzyme in your stomach. Explain how the enzyme would be affected if it was moved
the small intestines.
Answer:
It might not work as efficiently because the conditions are different
Explanation:
The stomach is highly acidic compared to the small intestine. That means the pH is higher in the small intestine. Stomach enzymes are adapted to work at low pH, but might not work at a higher pH as in the small intestine. They might not be able to efficiently catalyze reactions in the small intestine.
HELP FOR BRAINLIEST!
for me its glitched or word cut off i see no picture or question :/
What are the five categories of adaptations?
The five categories of adaptations are migration, hibernation, dormancy, camouflage, astivation.
What is migration?The term migration has been defined as when the birds, animals, or human beings leaves the native place and move towards a new place due to weather or other physical condition is known as migration. Generally, when it is too much cold the birds of that particular area migrated to the place where they found suitable temperature for their survival.
The stage of dormancy is the stage when seed gets closed and not able to germinate as it closes its outer wall. The term hibernation is defined as the particular time period in which the organism hybernate himself for a period of time when the weather or the outer environment is not safe, or fit for his survival.Generally, when it is too much cold the birds of that particular area migrated to the place where they found suitable temperature for their survival.
Therefore, The five categories of adaptations are migration, hibernation, dormancy, camouflage, astivation.
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A hurricane hit the Gulf Coast of Texas and washed away a series of sandbars near two large barrier islands. How will
this event change species diversity in the region-
answer choices:
a. the amount of species diversity will decrease because the number of available habitats has decreased
b. the amount of species diversity will increase because the number of available habitats has increased
c. the amount of species diversity will first decrease and then increase because it will take time for the species that lived on the sandbars to adapt to living underwater
d. the amount of species diversity will remain constant because the species that lived on the sandbars will
now have additional space to increase the population
6.which of the following is NOT a main part of the cell?
A cell membrane
B. cytoplasm
C. nucleus
D. ribosome
Explanation:
Its answer is ribosome
what is infographic?
An organism was found. It is unicellular, but its one cell does contain a nucleus and the cell is autotrophic. What type of organism is this?
A
animalia
B
protista
C
bacteria
D
fungi
Answer:
B protista
Explanation:
The cell is unicellular, so it can not be an animal, which are all multicellular.
It contains a nucleus, which means it cannot be prokaryotic (it cannot be bacteria)
The cell is autotrophic, which means it cannot be a fungus, which are heterotrophs
Therefore, the organism must be a protist, so the answer is B, protista.
Lori is a vegan who believes she gets all the nutrients she needs from her diet. She has never taken supplements, even when she was pregnant. Her baby, Mason, was born full-term, but with a small portion of his spinal cord protruding through his vertebrae, resulting in partial paralysis of his legs. This neural tube defect, called , may have been caused by Lori's insufficient intake of during pregnancy. This micronutrient is necessary for regenerating the active form of .
Answer:
The condition is called "Spinal Bifida", caused by lack of vitamin B12 which helps regenerate the active form of folate.
Explanation:
Because Lori is a vegan, her vitamin B12 intake which comes from animal products such as meat, is not enough. She has to take supplements to make up for the lack of it in her diet.
As stated in the question, this lack of vitamin B12 causes her child to have a defect in his spinal cord called Spinal Bifida that defines a spinal cord or spine that has not fully developed. The vitamin B12 is necessary for regenerating the active form of folate.
I hope this answer helps.
HELP i dont get this at all
Answer:D
Explanation:
These are different types of cells and they do different things in ur body
What would most likely happen if the number of shrimp decreased
Answer:
The population would decrease.
Explanation:
Answer:
the second one
Explanation:
hope this helps sorry if u get it wrong
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Answer:
ok
Explanation:
the element iridium is more resistant to corrosion than any other metal. it also has a slightly smaller density than osmium: 22.42 centimeters squared. suppose you have a sample of iridium with a volume of 34.17 cm squared. what is the mass of this sample
Answer:
766.09g
Explanation:
Divide the volume of the iridium with its density.
Density= mass÷volume
How could you stop a mixture of sugar, water, and yeast fermenting?
The valence of an element is equal to the number of ____
that an atom of
that element gains, loses, or shares while forming chemical bonds.