The main problem for those with cystic
fibrosis involves which of the following?
a. mucus sticking to dry surfaces
b. jerky muscle contractions
c. constant thirst
d. salt accumulations between tissues
e. low pH in tissues preventing proper
enzymatic activity
A
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A commercial fisherman is very concerned that overfishing will result in a decrease in tuna population size, thus affecting his catches in future years. What strategy can he employ to make sure that the tuna population can be sustained in the long term?
A. He can only catch young, non-reproducing fish. B. He can only catch old fish (past the reproductive age). C. He can only catch fish at the reproductive age.
Which of the choices best describes macroevolution?
A) Individuals with one genotype reproduce more than individuals with another genotype in a population. B) Mutation creates new alleles that are dominant. C) A new species emerges. D) Dominant and recessive allele frequencies are in equilibrium in a population.
Refer to the accompanying figure. Which statement is accurate?
a. CO2 will diffuse from the alveoli into the capillaries.
b. CO2 will diffuse from the capillaries into the tissues.
c. O2 will diffuse from the capillaries in the tissues to the capillaries in the lung.
d. O2 will diffuse from the alveoli into the capillaries.
e. O2 will diffuse from the tissues into the capillaries
a deficiency in what mineral leads to anemia
What will be an ideal response?