________ (NAD+) is the most common coenzyme involved in energy metabolism.

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


Nicotinamide adenine dinucleotide

Biology & Microbiology

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As a fish forces water across its gill, the blood flowing through the gill

a. picks up O2 over the whole route of exchange. b. picks up O2 during the first half of the exchange path, then equilibrates. c. picks up O2 over the second half of the exchange route only. d. removes O2 from the gill and then releases most of its O2 back to the gill. e. releases O2 over the whole route of exchange.

Biology & Microbiology

If a scientist is conducting a study of how a male bird's song and the female bird's response evolved, what type of causation is she exploring?  

A.  ultimate causation B.  proximate causation C.  stereotyped causation D.  ethnological causation E.  fixed action pattern causation

Biology & Microbiology

The large intestine is the longest part of the digestive tract

Indicate whether the statement is true or false

Biology & Microbiology

Definition of photosynthesis

What will be an ideal response?

Biology & Microbiology