According to scientific evidence, the first organisms on Earth must have been ____

a. aerobic
b. pathogenic
c. anaerobic
d. heterotrophs
e. multicellular


ANSWER: c

Biology & Microbiology

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If 0.04% (0.0004) of the people in a population has sickle cell anemia, the percent of heterozygotes in the population must be _____________________ percent

Fill in the blank(s) with correct word

Biology & Microbiology

Roots function in all of the following except

a. storage of food. b. production of food. c. anchorage and support of the plant. d. absorption of water. e. absorption of minerals.

Biology & Microbiology

RNA molecules with 5' cap and poly A tail are most likely

A. Prokaryotic tRNA B. Eukaryotic mRNA C. Prokaryotic rRNA D. Prokaryotic mRNA E. Eukaryotic tRNA

Biology & Microbiology

Nucleic acid molecules used to deliver new genes to cells are called (plasmids/vectors/clones)

What will be an ideal response?

Biology & Microbiology