Which of the following treatments is the most effective for controlling microbial growth?
A) 63°C for 30 minutes
B) 72°C for 15 seconds
C) 140°C for 4 seconds
D) They are equivalent treatments.
E) None of the answers is correct.
D
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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.
Discuss three physical or chemical properties of water and explain how each of these properties contributes to the importance of water for life on Earth to survive
What will be an ideal response?
Chemical bonds involve
a. the giving and taking of electrons. b. the giving and taking of protons. c. the giving, taking, or sharing of electrons. d. the giving, taking, or sharing of protons. e. the sharing of electrons.
The autonomic nervous system is a part of the:
A) appendicular nervous system. B) peripheral nervous system. C) central nervous system. D) somatic nervous system.