Answer: Option A "Choroid plexus".
Explanation:
Cerebrospinal fluid can be defined as the fluid that is found in the brain and spinal cord of human beings. It is a clear and colorless fluid.
The production of cerebrospinal fluid takes place by the specialized ependymal cells that lies in the choroid plexuses which is present in the ventricles of brain.
The amount of cerebrospinal fluid in a day is 500mL. This fluid acts as cushion that protects the brain from mechanical and immunological protection.
Hence, the correction answer is option A
I think the correct answer from the choices listed above is option 4. This prediction is most likely <span>correct, because water would be moving out of the cell into the salt solution. Hope this answers the question. Have a nice day. Feel free to ask more questions.</span>
Primary consumers enrich the soil,which help plants to grow and create more food energy for all of us.
The answer is <span>DNA polymerases add nucleotides to the exposed base pairs according to base-pairing rules.
DNA polymerase performs the polymerization of DNA. It adds nucleotides to the new DNA strand according to the base-pairing rules. This means that adenine binds to thymine and guanine binds to cytosine. The DNA polymerase is important enzyme responsible for accurate DNA replication.
Choice 2 is incorrect because DNA does not contain uracil.
Choice 3 is incorrect because helicase untwists DNA.</span>
