Answer:
Competition
Explanation:
Transportation of some molecules can not be through simple diffusion due to their size or other factors.
Therefore carrier proteins known as transporters are needed to facilitate their transportation.
Transporters exhibit or demonstrate characteristics such as competition,
During competition, presence of a certain molecule decreases the transportation of another molecule.
When Uric acid transportation is decreased due to the presence of probenecid is a good example of competition.
Answer:
skin acts as a protective barrier, therefore it does not secrete hormones
Breathing is a process to move air in and out of a system. In addition, this process may also result to loss of water. This insensible loss is from the evaporative loss from the respiratory tract. This accounts for 10% to 20% of the water.
Answer:
Option (e).
Explanation:
Blood is the main connective tissue of the body. Blood helps in the transport of oxygen, nutrients and the excretory product of the body. Blood also provides immunity as it contains white blood cells.
The resting time is expected during the diffusion process. But the substance continuous back and forth in the body. This is because cells are the main living entity of the organism. The cells are never at rest in order to live and their resting time is not possible.
Thus, the correct answer is option (e).
Well, it is more about RNA than DNA when we talk about using DNA code to code for a protein.
In the RNA (complementary of the DNA)has a codon the UAGC that codes for a specific type amino acid by being have a complementary anticodon. The "partnership" of these two creates chain of amino acid that become later a protein.
I do not know if I answered your question correctly, as I do not know how far you went in the subject.
