Cells are _____.
A. only found in pairs, because single cells cannot exist independently
B. characteristic of prokaryotic and eukaryotic organisms
C. characteristic of eukaryotic but not prokaryotic organisms
D. limited in size to 200 and 500 micrometers in diameter
Answer: B. characteristic of prokaryotic and eukaryotic organisms
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What tissues in an animal's body are the targets of genes for behavior?
A. axial skeleton B. forebrain and liver C. nervous system and musculature D. reproductive and urogenital E. innate and instinctual
A researcher wants to investigate the function of a gene without permanently altering the gene’s function or activity. Which experimental approach should she choose?
a. gene knockout b. gene knockdown c. electrophoresis d. RNA-seq e. bioinformatics
What is the definition of energy?
A. The amount of order in a system B. The capacity to do work C. The movement of an object D. Particles moving in waves through a system
During S phase, _____
a. chromosomes condense b. the cell produces proteins in preparation for mitosis c. the cytoplasm begins to divide d. DNA is replicated e. sister chromatids separate from each other