The correct answer is option A, that is, only DNA comprises nucleotides.
Nucleotides refer to the organic molecules, which function as the monomer units for producing the nucleic acid polymer DNA. Nucleotides are the building elements of nucleic acids. They are comprised of three subunit molecules, that is, a five-carbon sugar, a nitrogenous base, and at least one phosphate group.
Answer:
Bathypelagic Zone
Explanation:
This zone occurs above the Abyssopelagic zone and below the Mesopelagic zone. The zone is dark because little light reached this region. Only a small proportion of the higher frequency visible light (red light)reaches this region. The sea creatures in this region will be predominantly back or red in color.
You didn’t give me the organism if it’s an animal it belongs in a Animalia
Answer:
Alpha-1
Explanation:
Adrenergic receptors are the integral proteins present in the postsynaptic plasma membranes. These receptors are activated when the neurotransmitter norepinephrine and the hormones norepinephrine and epinephrine bind to them. The alpha 1 adrenergic receptors are found in the smooth muscle fibers of blood vessels that serve the salivary glands, skin, and kidneys. These receptors are also found in the radial muscle of iris of the eye as well as in the sphincter muscles of the stomach and urinary bladder.
They exert excitatory effect and lead to contraction of smooth muscles of the blood vessels, dilation of pupil, and closure of sphincters of the bladder.
If you want to see something in fine detail, you should focus the light the cornea. The lens works together with the cornea to focus light correctly on retina.
When light hit on retina special cells called photo receptors turn the light into electrical signals. The lens are the clear part of eyes behind the iris that help to focus light and image on retina to see something clearly.Lens is the important part of eye when it comes to focusing light so that we can see perfect clear image.
The retina is the most sensitive part which can effect by more light because retina convert incoming light into electrical impulse.
To learn more about Retina here
brainly.com/question/13993307
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