Cytokinins are plant hormones that usually affect cell
A. elongation.
B. growth.
C. division.
D. wall expansion.
E. turgor pressure.
C. division.
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Researchers can cut DNA at specific base sequences using ________
a. DNA ligase b. restriction endonucleases c. cloning vectors d. probes
The organelle that converts harmful hydrogen peroxide to water and oxygen is the ____
a. smooth ER b. peroxisome c. Golgi body d. ribosome e. lysosome
The member of the Enterobacteriaceae that has enteroinvasive, enterotoxigenic, enteropathogenic, and enterohemorrhagic strains is
What will be an ideal response?
If you wash your skin and hair several times a day, you will soon have dry skin that easily cracks and bleeds because the oils you have removed are necessary to keep the skin supple. This oil is
A. salty sweat secreted by sweat glands. B. lymph secreted by lymphatic ducts. C. pili secreted by arrectors. D. sebum secreted by sebaceous glands. E. sebum secreted by sweat glands.