Internal fertilization, leathery amniotic egg, and skin that resists drying are characteristics of _____

A) amphibians
B) nonbird reptiles
C) chondrichthyans
D) mammals
E) birds


Answer: B

Biology & Microbiology

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A transport system in which the transport of an ion in one direction provides the energy for active transport in the

opposite direction is known as ____.

a. antiport b. active diffusion c. symport d. facilitated diffusion e. osmosis

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What is nutritional immunity?

a. acquired resistance to food-borne allergens b. withholding of nutrients necessary for pathogen replication c. the relationship between the efficacy of the immune system versus food intake d. the body’s ability to protect itself from infection by digesting pathogens

Biology & Microbiology

Which of the following carries amino acids to

ribosomes?

. mRNA b. tRNA c. hnRNA d. rRNA e. all of these

Biology & Microbiology

At the milestone that defines metaphase, the chromosomes

a. separate. b. come together. c. are at opposite poles. d. line up at the equatorial plate. e. cross over.

Biology & Microbiology