Answer:
D. DNA Contains the genetic code / instructions for the cell and the living organism they build
Explanation:
DNA and RNA are nucleic acids that contain the genetic information so that a cell knows exactly what proteins it should make, what function it should serve.
Why not A: DNA and RNA don't strictly build cellular proteins; that job is up more to the ribosome, tRNA, and mRNA. While this could be acceptable, it's not as good an answer as D.
Why not B: This is incorrect.
Why not C: DNA and RNA don't do any of the dirty work of fighting off intruders; that's the job of the immune system, building antibodies, eating the viruses with white blood cells, and using the epidermis as a barrier to keep harmful things out.
There is still no accurate explanation as to why
the thyroid glands enlarge during goitre. It occurs more frequently in women
than in the opposite sex. They are mostly harmless but it is advisable to see a
doctor once there is a sign of a lump.
The cell wall controls this
Taste bud receptors if not stimulated are normally polarized. With the presence of the food, chemicals from the food bind with the cell protein which depolarized the cell membrane receptor. Depolarization will lead into the propagation of electric impulse. This will lead into the creation of sensory impulse. The larger number of the chemicals in the food will lead into a stronger impulse.
<span>The answer would be:
reduces water loss compared to other nitrogenous wastes, but requires more metabolic energy to produce
Nitrogen waste needs to be removed out of the body. There are a few ways to remove the nitrogen waste but it will vary in the amount of energy used.
Uric acid is less soluble which makes it won't be secreted in urine, thus reducing the need to urinate and reduce water loss. But the production of uric acid need hydrolysis of ATP, so it needs more energy.
Fish will secrete the waste as ammonia which soluble in water but doesn't need ATP to synthesize.</span>