Which of the following molecules is notan integral membrane protein? a. the insulin receptorb. the epinephrine receptorc. the ryanodine channeld. the glucocorticoid receptore. the growth factor receptor

Option D.

Explanation:

An integral membrane protein is a type of membrane protein that is permanently attached to the biological membrane, including transmembrane proteins. Insulin receptor, epinephrine receptor, growth factor receptor and ryanodine channel are receptors/ channels which implies its presence on the cell membrane for signal from binding ligand to be translocated into the cell through a signalling cascade. Glucocorticoid is an lipophilic signalling molecule which can pass through the cell surface membrane (due to its lipophilic characteristic that enables it to pass through the hydrophobic core of the phospholipid bilayer) and acts on its receptor in the cell cytosol. Hence the glucocorticoid receptor is not on the cell surface membrane and is thus not an integral membrane protein.

hey bro i looked it up on google the structure of the eye-spot in euglena viridie, e. ehrenbergii, and phacus pyriyorme is not as franzé haa described it. the so-called “crystal body” and “lens bodies” were not found in any of the individuals of the species examined by me. as earlier observers have stated, the eye-spot consists simply of a mass of pigment granules arranged in a single layer, and probably embedded in a protoplasmic framework, but the latter could not be seen, and its presence was only inferred from the fact that the pigment granules must be held together in some way, thd the eye-spot as a whole is capable of expansion, and that the pigment granules can be separated from each other.

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c. movement because i took the test and it lets me review my answers