A breed of chicken shows codominance for feather color. One allele codes for black feathers, another codes for white feathers. The feathers of heterozygous chickens of this breed will be

A) speckled.
B) black.
C) gray.
D) white.


Ans: A) speckled.

Biology & Microbiology

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Metabolic reactions fall under two general categories: anabolic and catabolic.  What type of chemical reactions are these two classes of metabolic reactions?   

A. Anabolic reactions are exergonic reactions, whereas catabolic reactions are endergonic. B. Both anabolic and catabolic reactions are exergonic. C. Both anabolic and catabolic reactions are endergonic. D. Anabolic reactions are endergonic reactions, whereas catabolic reactions are exergonic.

Biology & Microbiology

Where in a sperm are mitochondria found?

a. the head b. the midpiece c. the tail d. both the tail and the midpiece e. in all parts of the sperm

Biology & Microbiology

Choose the nutritional mode that is primarily employed by each of the protists listed below.

A. autotrophic B. mixotrophic C. heterotrophic (by absorption) D. heterotrophic (by ingestion)

Biology & Microbiology

Human muscle cells use lactic acid fermentation to ________

A) produce more ATP than is possible through complete aerobic respiration B) produce ATP using the electron transport chain C) regenerate NADH D) produce ATP without O2

Biology & Microbiology