When a DNA molecule is replicated, the daughter molecules contain one strand of parental DNA and one strand of newly synthesized DNA; this is called ________ replication.
A. semiconservative
B. dispersive
C. hemiconservative
D. conservative
Answer: A
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Avidin binds biotin with a Kd of ~10?15 mol/L. A protein of interest can be covalently linked to biotin and subsequently isolated by incubating with beads coated with avidin
If the concentration of biotinylated protein is 10-8 M at the beginning of the assay and the beads provided an excess of avidin-binding sites, then one could expect the beads to bind: A. a small fraction of the protein in the sample. B. approximately half the protein in the sample. C. almost all of the protein in the sample. D. 10–15 mol of protein per 1 mL of sample. E. This cannot be predicted.
Which of the following do the Kuna suffer
very little from? a. Hypertension. b. Yellow fever. c. Malaria. d. Dengue fever. e. They suffer little from any of these.
The fact that plants can be cloned from somatic cells demonstrates that _____
A) differentiated cells retain all the genes of the zygote B) genes are lost during differentiation C) the differentiated state is normally very unstable D) differentiation does not occur in plants
Two moths with similar markings each produce a chemical that makes their bird predators sick to their stomach if eaten. Which principle of ecology does this demonstrate?
A) Müllerian mimicry B) Batesian mimicry C) commensalism D) mutualism