Endospore-forming Gram-positive bacteria are found primarily in ________ habitats.
A. freshwater
B. marine
C. soil
D. All of the choices are correct.
Answer: C
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Natural selection is a quick and effective way of eliminating harmful alleles from the population
a. True b. False
The movement of water through a membrane is dependent on
a. the concentration of solute. b. channel proteins. c. the extent of packing of the phospholipids. d. active transport. e. endocytosis.
Homologous recombination ________
A) occurs during meiosis as a normal process B) is used in plant cell activation C) must be used to produce animal bioreactors D) occurs when creating a knockout animal E) is a technique not proven to be successful
Sperm cells are the only type of cell in animals that have:
A) cilia. B) a flagellum. C) pili. D) cytoplasm. E) genetic material.