What do G-protein coupled, enzyme-linked, and ligand-gated ion channel receptors have in common?
A. They change their conformation when bound to a hormone.
B. They open ion channels.
C. They bind similar hormones.
D. They are all linked to protein kinase activation.
E. They associate with a protein bound to GDP or GTP.
Answer: A
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In a population growing exponentially,
a. the number of individuals added to the population next year is less than the number added this year. b. the population growth rate decreases year after year. c. net reproduction per individual increases year after year. d. the number of individuals added to the population next year is greater than the number added this year. e. the number of individuals in the population will level off after ten generations.
What is meant by the term low gene density? Give an example of an organism with low gene density
What will be an ideal response?
Human herpesvirus 3 (HHV-3)
A. causes chickenpox and shingles. B. becomes latent in dorsal root ganglia that serve specific dermatomes. C. has humans as its reservoir. D. uses the respiratory epithelium as its portal of entry. E. All of the choices are correct.
What type of charge do histones tend to carry?
a. a mixture of positive and negative charges b. no charge c. a negative charge d. a positive charge