Distinctly different groups within a species are known as 

A. varieties.
B. breeds.
C. subspecies.
D. All of these answers are true.


D. All of these answers are true.

Biology & Microbiology

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You have chosen RNA as the most likely molecule to be first enclosed by a membrane. You understand that it has the ability to store information and can self-replicate, but what else is necessary for simple metabolic processes to occur in a timely manner?

A. A biological catalyst. B. Energy from ADP. C. A pump, to drive a concentration gradient. D. A more stable nucleic acid. E. The ability to carry out structural roles.

Biology & Microbiology

In the early Earth, the development of ________ created oxygen gas in the atmosphere

A) ozone B) nitrogen fixation C) cellular respiration D) photosynthesis E) eukaryotes

Biology & Microbiology

These facial bones increase the ability of the nasal passageways to warm and humidify incoming air.

What will be an ideal response?

Biology & Microbiology

The mordant for the endospore stain is the _________ process.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology