Question

1. Which of the following properties of hemoglobin facilitate cooperative binding?

a. its tetrameric structue

b. its high affinity for iron

c. its mutiple histadine residues

d. its temperature sentitivity

e. its small size

2. In the ocean layers where there’s very little light, many fish have bioluminescence. Which of the following statements is correct about this adaptation?

a. Fish sequester light-emitting compounds from their food or a symbiotic organism.

b. It is used for communication and evading predators

c. Bioluminescent structures can lure prey or be used for hunting

d. All of the above are correct.

e. This is not an adaptation

3. Which of the following statements about the deep sea are accurate?

a. Vertebrates dominate at depths below 8,000 m because invertebrates are constrained by their physiology at those depths

b. The only energy and organic nutrients in the deep sea fall from the epipelagic layer where photosynthesis occurs

c. The environment is relatively stable in terms of temperature, salinity, and pressure in the bathypelagic and abyssopelagic zones
d. Deep sea fish live very long lives with high reproductive rates
e. All of the above are accurate statements

Answer 1