Integral proteins are embedded in the phospholipid layer, and can sometimes form protein channels that let ions and other small molecules through.
The correct answer is D, white blood cells.
We know that red blood cells deliver nutrients and are not apart of the immune system; platelets are responsible for coagulation, which has nothing to do with the immune system, and plasma is a substance that, again, has nothing to do with immunity. White blood cells are the only things that fight disease (antibodies are white blood cells)!
I hope I helped!
(By nothing I meant very little to none).
Answer:
electromagnetic energy
Explanation:
sunlight is a radiation, from the electromagnetic spectrum we have visible light and ultraviolet radiation whose source is the light
Answer:
Sun > Grass > Deer > Lion
Explanation:
The sun begins a food chain because its light is needed for a plant, in this case grass, to grow.
An animal that eats grass is the deer, who is a primary consumer.
An animal that eats deer is the lion, who is a tertiary consumer in this case.
The lion has no natural predator, and thus is at the top of this food chain.
This ecosystem can be one found where grass, deer and lions exist, for example, the deciduous forest in the eastern United States.
The cartoon shows Metaphase I.
Metaphase I has homologous chromosomes that line up at the middle while Metaphase II has single chromosomes that line up at the middle.
