Question

choose the correct answer.

1) Which is not a function of the integument?

protection from microbial invasion.


protection from water loss.


platelet production.


pheromone release.


thermoregulation.


2) Microtubules:

all of the above.


form the extracellular matrix.


form the spindle fibers.


are made of actin.


none of the above.



3) Mitochondria:

are locomotor organelles.


act as the control center of the cell.


none of the above.


synthesize the extra-cellular matrix.


produce energy from food molecules.

4) Peroxisomes:

neutralize hydrogen peroxide.


produce H2O2.


detoxify poisons.


none of the above.


all of the above.

5) Tight junctions:

are important in tissue formation.


none of the above.


join epithelial cells together.


don’t allow the movement of materials between cells.


all of the above.

6) The cytoskeleton:

is made mostly of proteins.


is secreted outside of the cell.


all of the above.


is made of connective tissue.


is made mostly of bone tissue.

7) Interphase:

is when the chromosomes condense into compact visible form.


is when the chromosomes line up.


is when the sister chromatids separate.


is when chromosomes are duplicated.


none of the above.

8) Hair shafts:

none of the above.


are made of collagen.


are made of cartilage.


are made of transitional epithelium.


are made of dead cells that have been compressed together.

9) Cadherins:

none of the above.


are part of the extracellular matrix.


form chromosomes.


form the cytoskeleton.


all of the above.

10) Apocrine glands:

release hormones.


none of the above.


produce mucus.


all of the above.


may function in chemical communication.

11) The stratum lucidum:

is most well developed in the pubic and axillary regions.


none of the above.


occurs on the dorsal surface of the hands.


occurs on the dorsal surface of the feet.


contains lots of hair follicles.

12) The hypodermis:

contains lots of keratin.


is mostly dense irregular connective tissue.


attaches the skin to underlying muscle and bone.


all of the above.


is what leather is made out of.

Answer 1

1. Pheromones release not a function of integument.

2. Microtubules form spindle and are made up of tubulin not actin . Macrotubules form extrac cellular matrix .

3. Mitochondria --produce energy from food molecules.

4. All of the above.

5. All of the above

6.  The cytoskeleton: is made mostly of proteins.

7.is when chromosomes are duplicated.

8. are made of collagen.

9. all of the above.

10. May function with chemical communication.

11. none of the above.

12. attaches the skin to underlying muscle and bone.