Which environmental factor is least likely to influence the production of hormones?

a. Moisture levels
b. Presence of competition
c. Length of darkness
d. Gravity
e. Temperature


b

Biology & Microbiology

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An organism is serologically identified in the clinical laboratory. This is an example of which phenotypic property?

a. Subcellular properties b. Antigenic properties c. Resistant profiles d. Nucleic acid sequence analysis

Biology & Microbiology

The first lungs evolved from outpouchings of the gut wall in some:

a. bony fishes b. amphibians c. birds d. reptiles e. early mammals

Biology & Microbiology

If a sperm cell combines with an egg cell, then the result is a

A. gamete. B. diploid cell. C. duplicated chromosome. D. gametophyte. E. haploid cell.

Biology & Microbiology

What is a defining characteristic of members of the Class Testudines?

A. They have a kinetic skull. B. They lack limbs. C. They have a four-chambered heart. D. They have a hard shell.

Biology & Microbiology