What is the purpose of the ampicillin resistance gene?

A) Selective marker
B) Gene of interest
C) Turn on GFP expression
D) Origin of replication


A) Selective marker

Biology & Microbiology

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The Osteichthyes, or bony fish, make up about half of vertebrate species diversity. Their success is due to a combination of adaptations that include (select all that apply):

A. mobile jaws for specialized feeding. B. kidneys that allow fine regulation of water balance. C. lungs modified from swim bladders. D. metamorphosis allowing them to occupy distinct niches as juveniles and adults. E. paired, fleshy pectoral and pelvic fins.

Biology & Microbiology

Which of the following is NOT a function of the vertebrate urinary system?

A) Eliminating cellular wastes B) Regulating body temperature C) Maintaining blood pH D) Adjusting water and ion concentrations E) Secreting hormones

Biology & Microbiology

The organelle that degrades potentially harmful hydrogen peroxide to harmless substances is the

a. lysosome. b. peroxisome. c. mitochondrion. d. endoplasmic reticula e. Golgi body.

Biology & Microbiology

In a showy flower such as a magnolia or rose, the flower parts that play the main role in attracting the notice of animal pollinators are the

A) petals. B) sepals. C) fruits. D) stigmas.

Biology & Microbiology