cell membrane?
Answer:
Water channel proteins are helps the molecules move through a cell membrane.
Explanation:
this protein acts like a pore in the membrane that lets water molecules or small ions through quickly. This proteins (aquaporins) allow water to diffuse across the membrane at a very fast rate. Ion channel proteins allow ions to diffuse across the membrane.
Answer:
Gated Channel protein
Explanation:
Soft body parts are well preserved as fossils.
A cast fossil leaves a hollow space once occupied by a dead organism.
Vertebrate fossils are more common than invertebrate fossils.
Answer:
D
Explanation:
I took the test
Answer: The correct answer for the blank is-
Leukocytes.
Leukocytes ( also called white blood cells) are a type of blood cells that play significant role in the defense mechanism of our body (the immune system).
These cells can be of various types ( such as eosinophils, basophils, neutrophils, lymphocytes).
They assimilate/ ingest any pahtogenic agent ( foreign agent such as bacteria and virus, which cause disease) that enters body and prevent the body from getting infection.
Thus, leukocytes is the right answer.