Each of the following is a component of focal adhesions except
A) integrin.
B) talin.
C) ?-actinin.
D) vinculin.
E) plakoglobin.
Answer: E
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Epigenetics is the study of heritable alterations in gene expression caused by ____
a. mechanisms that do not alter any DNA sequence b. the mutation of a single gene c. translocations between alleles d. environmental factors e. replication and then improper repair of DNA coding mistakes
Which of the following statements about the nucleus is NOT true?
A. The nucleus stores the coded instructions for making the cell's proteins B. The nucleus usually contains a nucleolus region which is where ribosome assembly begins C. The nucleus us the site of protein assembly D. The nucleus us surrounded by a nuclear envelope that lets materials in and out
Why are Ribosomes important in the replication of DNA Viruses?
a. They produce dsDNA. b. They produce dsRNA. c. They make lipids. d. They synthesize carbohydrates. e. They produce proteins.
What are some challenges of cataloging a microbiome? Choose all that apply.
A. Many of the species use RNA instead of DNA. B. Most microbiome species are dangerous pathogens. C. Many of the different fungal species look like identical strings of hyphae. D. Since many species are unnamed and uncharacterized, DNA sequencing is useless. E. Microbes have such small amounts of DNA, it cannot be amplified. F. Many of the different bacterial species look like identical tiny rods.