Myoglobin content is high in

a. fast anaerobic fibers.
b. fast aerobic and fast anaerobic muscle fibers.
c. slow muscle fibers and fast aerobic muscle fibers.
d. slow muscle fibers.
e. fast aerobic fibers.


C

Biology & Microbiology

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Answer the following statements true (T) or false (F)

1. Modern humans show a type I survivorship curve. 2. K-selected populations tend to reproduce quickly. 3. Exponential growth is rare because resources are usually limiting. 4. r-selected species tend to have type III survivorship curves. 5. Drought and floods are considered to be density-dependent factors potentially affecting population size.

Biology & Microbiology

Which one of the following incorrectly matches a molluscan structure with its typical function?  

A.  ctenidia—secretion of the shell (when present) B.  visceral mass—houses organs of digestion, excretion, reproduction C.  foot—locomotion D.  nephrostome—collection of nitrogenous wastes E.  radula—feeding organ

Biology & Microbiology

The term biome refers to

a. the animals present in a given area. b. the interaction of living organisms and the physical environment in a region. c. large regions with distinctive plant communities. d. all the living organisms in an area. e. only the bacteria in a region.

Biology & Microbiology

The total resources a population consumes and the resulting wastes that are returned to the

environment are referred to as a(n) a. point source. b. nonpoint source. c. ecological footprint. d. ecocycle. e. biocycle.

Biology & Microbiology