________ is a vitamin necessary for normal sperm formation and embryonic development

a. Folate
b. Vitamin B
c. Ricin
d. Niacin
e. Vitamin A


a

Biology & Microbiology

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Virulent as well as temperate phages can serve as generalized transducing phages

Indicate whether this statement is true or false.

Biology & Microbiology

The chemoreceptors called papillae are ________

a. ciliated endings of olfactory receptors b. touch receptors located on the skin c. taste buds on the tongue d. specialized for detecting pheromones

Biology & Microbiology

The relationship between the yucca plant and

the yucca moth that pollinates it is best described as

a. commensalism. b. parasitism. c. predation. d. mutualism. e. all of these

Biology & Microbiology

White flower color is recessive to purple. What is the genotypic ratio when two heterozygous pea plants are crossed?

A. 1:1 B. 3:1 C. 4:0 D. 2:1 E. 1:2:1

Biology & Microbiology