Answer:
1, 2, 3, 4, 5 is the correct answer.
Explanation:
Cerebrospinal fluid is present in the spinal cord and it encompasses the brain.
The main functions of the Cerebrospinal fluid are
- To protect the brain and spinal cord from shock.
- To provide nutrients to a nervous system.
- To remove the waste products from a cerebral metabolism.
- To filter the chemicals from the blood.
- It controls constant pressure between the brain and skull.
- It regulates the pH homeostasis.
- It provides the brain to control its density.
Answer:
cell wall and nucleus are the answers
Answer:
An experiment where an antibiotic is tested against bacteria. The antibiotic can vary in its concentration for example, different amounts are applied to a sample of bacteria to see if it is affected by the action of the antibiotic and if so, in what concentration. So, the independent variable is the concentration of antibiotic while the dependent variable is the survival (or not) of the bacteria.
Explanation:
An independent variable is a variable that represents a quantity that the scientist modifies in an experiment. A dependent variable represents a quantity whose value depends on how the independent variable is modified. This is the variable being studied and measured.
So, an example of this applied to bacteria or viruses could be:
<u>An experiment where an antibiotic is tested against bacteria</u>. The antibiotic can vary in its concentration, different amounts are applied to a sample of bacteria to see if it is affected by the action of the antibiotic and if so, in what concentration. So, the independent variable is the concentration of antibiotic while the dependent variable is the survival (or not) of the bacteria.
To complete the experiment, an antibiotic whose effect is already known can be used as a positive control. That is, it is already known to kill the bacteria. And as a negative control you can simply use water, which has no effect and is known not to kill the bacteria. In this way, we validate the results and make sure that there is not something else that is affecting the bacteria and that only the antibiotic being studied has an influence.
Answer: Growth rate of the mesophiles decreases as the temperature increases.
Explanation:
The growth rate of the mesophiles will decrease on increasing the temperature because mesophiles defines the condition which ranges in between 20 and 45 °C (68 and 113 °F).
If the temperature of the environment is more or below this range then the growth rate of the bacteria will be affected.
These are the bacteria which is found in plain regions as the temperature there is optimum for their growth.
Answer:
It allows the single gene to code for multiple proteins.
Explanation:
The primary transcript formed by transcription in the nucleus of eukaryotes under post-transcriptional modifications. One such modification is the removal of introns and joining of exons together. The mature mRNA after these modifications enter the cytoplasm to serve as a template for protein synthesis.
Alternative splicing is the differential splicing process that produces mRNA with different combinations of exon from a single primary transcript. These mRNA molecules with different combinations of exons code for different proteins. Therefore, alternative splicing allows the formation of cell specific or developmental stage specific variants of proteins from a single gene in a eukaryotic cell.