A&P Regrades

4. a)This is correct because the basement membrane is where a cell attaches to a “lining”, so the basement membrane will always be outside the normal cell membrane as it is not a part of the actual enterocyte or keratinocyte cell.

7. b)This is correct because the working muscle gets hot and the blood that is being pumped into the muscles are cooler than the muscles themselves, so blood flow into the working skeletal muscle will cool the muscle back down.

8. b)This is incorrect because the rate of transport will only increase if there is a concentration gradient. If there is not gradient, there will not be an increase of transport, so more Glut-4 doesn’t always increase uptake.

11. a) This is incorrect because if there is more glucose ingested, the Glut-2 would allow glucose to be …show more content…
a)This is correct because if the mRNA is not being made, proteins cannot be encoded. If the proteins are not encoded, they will not be able to make things like carrier proteins and enzymes. Without carrier proteins, glucose has no way to get into the cell, so the cell would not be able to take in glucose without mRNA making proteins.
20. b)This is correct because if a horse is darker, it has more pigment molecules, like melanosomes. The number of melanocyte cells do not differ between the horses, but a more pigmented horse would have more pigment molecules within that melanocyte cell.

21. a)This is correct because the epidermis is the outermost layer of the skin, and the movement of heat from the epidermis to the environment can either be radiation or evaporation because the heat is not moving (like convection) and it is not from direct contact (like conduction), it is through heat waves into the environment.
b)This is incorrect because even though the cows are not touching each other and the air around them is not moving. They are making each other warmer because all the body heat from each cow is radiating into the herd, causes them to heat up rather than cool