BIO 301 – There are several commercial insecticides

10 Jun BIO 301 – There are several commercial insecticides

Question
Question 1

There are several commercial insecticides and gases used in chemical warfare that are classified as poisons due to the ingredient acetylcholinesterase inhibitor. In other words, these poisons prevent the enzyme acetylcholinesterase from breaking down acetylcholine.

Describe the affect this poison would have on an individual at the cellular level. What would be a potential outward symptom of exposure to such a poison?

Question 2

Unlike nonsteroid hormones, steroid hormones…

Question 2 options:

a) include hormones such as growth hormone and prolactin.

b) bind to receptors on the cell’s surface.

c) tend to be slower-acting than other varieties.

d) are structurally similar to proteins.

e) cannot cross the cell membrane.

Question 3

Which statement concerning skin is NOT TRUE?

Question 3 options:

a) There are many microorganisms (bacteria and fungi) that live on the skin.

b) Some of the functions of the skin include protection, thermoregulation, and mineral storage.

c) Whereas melanocytes produce the pigment-protein melanin, keratinocytes produce a tough, waterproof protein called keratin.

d) The dermis mostly contains connective tissue.

Question 4

Recently a young man from Derby in the United Kingdom entered a contest and drank 26 pints of water in a very short time. He later died of complications due to hypotonic hydration, also known as water intoxication. How were his body’s cells affected by the excess water, and how might that have contributed to his death?

Question 5

I have “skull, scapula/clavicle/humerus, patella, and distal phalanges” stuck in my head.

identify the song!

Question 6

Which of the following statements concerning an endurance athlete (i.e. marathon runner) is TRUE?

Question 6 options:

a) His/her muscle cells have greater than average mitochondria and blood flow (supporting blood vessels).

b) His/her muscle cells have greater than average storage of ATP, creatine phosphate, and glycogen.

c) His/her muscle cells mostly perform anaerobic respiration.

d) His/her major muscles contain all fast-twitch fibers.

e) His/her major muscles contain all slow-twitch fibers.

Question 7

Which of the following concerning skeletal muscle cells in NOT TRUE?

Question 7 options:

a) They are some of the longest cells in the body.

b) They can use ATP, creatine phosphate, or hydroxyapitite as energy sources.

c) They can be excited by chemicals such as neurotransmitters.

d) They are striated.

e) They are multinucleated.

Question 8

Describe a pair of antagonistic hormones.

Question 9

All of the following biological molecules are present in the plasma membrane EXCEPT:

Question 9 options:

a) nucleic acids

b) lipids

c) carbohydrates

d) proteins

e) water

Question 10

Compare and contrast swimming and running as forms of exercise training in terms of how they might affect muscle mass, bone mass, and the possibility of injuries to joints.

Question 11

Describe homeostasis using a specific example from the body

Question 12

A college student is writing a paper on the subject of cocaine and birth defects in humans and wonders why there do not seem to be published reports of controlled experiments in humans on the subject; all the studies are on rats! Describe how such a controlled experiment would have to be designed and conducted. Would any responsible regulatory agency be permit such an experiment; why or why not?

Question 13

Which statement concerning the nervous and endocrine systems is TRUE?

Question 13 options:

a) Unlike the endocrine system, the nervous system has organs present in the brain.

b) Whereas the nervous system relies entirely on electrical impulses, the endocrine system uses chemicals.

c) Nervous system effects tend to last longer than effects of the endocrine system.

d) Whereas the endocrine system relies entirely on electrical impulses, the nervous system uses chemicals.

e) Endocrine control tends to be slower than nervous system control.

Question 14

Explain why it is that a fair-skinned person exposed to the sun is more likely to develop skin cancer than a dark-skinned person