True or False: In the early 1900s, a United States resident was most likely to die from infectious disease, whereas today nonmicrobial systemic diseases are the leading cause of death
a. TRUE
b. FALSE
Answer: A
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If you have a double stranded synthetic piece of DNA that you want to attach to a PCR product, which enzyme would be used to join together two molecules.
A. DNA polymerase. B. Reverse transcriptase. C. Restriction enzyme. D. Taq DNA polymerase. E. DNA ligase.
The genetic variation that exists among humans is mainly due to the differences that exist within their ________
a. alleles b. ribosomes c. parents d. cell membranes e. cells
Unripe fruits protect seeds from predation and early germination. What is the major function of ripe fruits?
A) attracting pollinators B) dispersing seed C) releasing nutrients to seeds D) keeping the seed hydrated before germination
How many species of animals and plants are estimated to go extinct in our lifetimes?
A. 500 B. 10,000 C. 25 D. one-fifth of the world's species