A porpoise and a dolphin, both mammals, mate and produce an embryo, but the embryo fails to complete

development. This event describes:a.
hybrid sterility.
b. hybrid inviability.
c. hybrid breakdown.
d. gametic isolation.
e. gestational abortion.


b

Biology & Microbiology

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According to the diversity-stability hypothesis:

A. Genetic diversity is the most important part of ecosystem stability. B. A loss of any species from an ecosystem leads to an approximately equal decline in stability. C. The loss of a few species from an ecosystem does significantly affect ecosystem functioning. D. Losing even a few species from an ecosystem causes a drastic decline in ecosystem stability. E. Every species has an important role in ecosystem function, but we cannot predict the effect of species loss.

Biology & Microbiology

All of the following methods are employed to identify pathogens in clinical specimens EXCEPT

A. biochemical tests. B. special stains and microscopy. C. culture on a variety of all-purpose, selective, and/or differential media. D. molecular testing for nucleic acids. E. immunoassays. F. There are no exceptions here.  All of these methods are used to identify pathogens.

Biology & Microbiology

Which of the following is NOT a form of active transport?

a. sodium-potassium pump b. endocytosis c. exocytosis d. diffusion e. ATP pump

Biology & Microbiology

Ruminants are herbivorous reptiles, such as tortoises and iguanas, which regurgitate food to further break it down into smaller pieces

Indicate whether the statement is true or false

Biology & Microbiology