Viruses used in live viral vaccinations have the potential to revert to disease-causing forms within a host, effectively causing the diseases they were intended to prevent. What is the name for this reversion?
a. back mutation
b. reverse lysis
c. retroviral
d. devolution
a. back mutation
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Arrange the following five events in an order that explains the mass flow of materials in the phloem
1. Water diffuses into the sieve tubes. 2. Leaf cells produce sugar by photosynthesis. 3. Solutes are actively transported into sieve tubes. 4. Sugar is transported from cell to cell in the leaf. 5. Sugar moves down the stem. A) 2, 1, 4, 3, 5 B) 1, 2, 3, 4, 5 C) 2, 4, 3, 1, 5 D) 4, 2, 1, 3, 5 E) 2, 4, 1, 3, 5
Where in cells are proteins manufactured?
a. Golgi bodies b. vesicles c. rough endoplasmic reticula d. lysosomes e. smooth endoplasmic reticula
During fertilization, which two items combine to
form a fertilized egg? a. I and II b. I and III c. I and IV d. II and IV e. III and IV
What is a produce of glycolysis?
A.) pyruvate B.) NADH C.) ATP D.) All of the Above