Disulfide bonds are most characteristic of which of the following levels of protein structure?

uestion 10

About 55% of whole blood is ____, which is mostly made up of water.

Answer

plasma

hemoglobin

white blood cells

clotting proteins

hematocrit

Question 11

Disulfide bonds are most characteristic of which of the following levels of protein structure?

Answer

primary

secondary

tertiary

quaternary

none of the above

Question 12

Skin becomes less flexible as individual ages because of a decrease in the number of protein fibers associated with the dermis.

Answer

True

False

Question 13

Red-green color blindness is an X-linked recessive disorder. Assume that mom is a carrier and dad is color blind. What is the chance that their son will inherit red-green color blindness?

Answer

0%

25%

50%

75%

100%

Question 14

Human cells, with the exception of the gametes, reproduce by mitosis.

Answer

True

False

Question 15

A student noticed that every time he smelled a certain perfume in the hallway, it reminded him of his mother. This is due largely to the activity of the limbic system.

Answer

True

False

Question 16

Bulk movement of water across plasma membranes and the exchange of oxygen from blood into cells are similar in that the method of transport is by

Answer

facilitated transport.

active transport.

sodium-potassium pumps

Question 17

Excitatory neurotransmitters encourage the generation of new electrical impulses by

Answer

stimulating saltatory conduction.

stimulating depolarization of postsynaptic neurons.

inhibiting postsynaptic neurons from repolarizing.

inhibiting presynaptic neurons from depolarizing.

stimulating depolarization of presynaptic neuorons

Question 18

Which of the following is not true regarding pneumonia?

Answer

It is caused by the bacterium Mycobacterium tuberculosis.

Symptoms include fever, cough, and shortness of breath.

It ranks among the top 10 causes of death in North America.

It can be caused by a viral infection.

Symptoms result from inflammation of the lungs and secretion of excess fluid by the alveoli.

Question 19

Vasoconstriction causes an increase in the diameter of blood vessels, thus causing an increase in blood flow to the tissues.

Answer

True

False

 

"Looking for a Similar Assignment? Get Expert Help at an Amazing Discount!"