Priming of replication of double-stranded DNA does not require
a. a primase.
b. SSBs.
c. a replicase.
d. DNA ligase.
e. a free 3?-OH.
Ans: d
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From the outside of a tree to its center, which of the following is the correct order of appearance?
1. periderm 2. vascular cambium 3. sapwood 4. secondary phloem 5. cork cambium 6. heartwood
a. 1-2-4-5-6-3 b. 1-5-4-2-3-6 c. 1-4-5-2-6-3 d. 1-3-2-5-4-6 e. 1-2-4-5-3-6
In the process of organismic respiration:a
oxygen is extracted from the environment by the organism and delivered to its cells. b. the citric acid cycle takes place in the cells. c. carbohydrates are broken down and electrons are transferred to oxygen. d. there is an accumulation of lactic acid in the tissues due to the absence of oxygen. e. carbon dioxide is produced in the Krebs cycle
Homeostatic mechanisms are processes that:a
connect distant parts of the body by transporting materials. b. store and release fuel needed for cellular respiration. c. maintain a relatively constant internal environment. d. are not affected by stressors. e. deviate from a setpoint.
Translation is where:
A. -ssRNA is used by ribosomes to produce a protein B. -dsRNA is used by ribosomes to produce a protein C. mRNA is used by ribosomes to produce a protein D. mDNA is used by ribosomes to produce a protein E. +dsRNA is used by ribosomes to produce a protein