A biological select agent spread by (aerosols/contact/ingestion) has a high threat level.
Fill in the blank(s) with the appropriate word(s).
aerosols
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Lactic acid fermentation occurs in (select all correct answer options):
A. animals and plants. B. plants and bacteria. C. bacteria and animals. D. fungi and bacteria. E. animals and fungi.
During gastrulation, the cellular process by which ectoderm in the animal pole spreads toward the vegetal pole is called
A. epiboly. B. invagination. C. involution. D. convergent extension. E. apical constriction.
Which sequence of events is true about phtyochrome?
A. Red light activates phytochrome, converting it to Pfr, activated Pfr moves to the nucleus, then Pr is a receptor for red light in the cytosol. B. Pr is a receptor for red light in the cytosol, red light activates phytochrome, converting it to Pfr, then activated Pfr moves to the nucleus. C. Pr is a receptor for red light in the cytosol, activated Pfr moves to the nucleus, then red light activates phytochrome, converting it to Pfr.
Which cell is NOT haploid?
a. polar bodies b. primary oocyte c. secondary spermatocyte d. spermatids e. sperm