What process resulted in a dramatic increase in milk production in modern dairy cows?
A) the insertion of beta carotene in the cow genome
B) the use of recombinant bovine growth hormone
C) frameshift mutations in the DNA of the cows
D) the use of gene guns to insert new genes into the cow mammary tissues
B
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Suppose a cell lacks functional Shugoshin. What is the predicted effect on cohesin?
A) Cohesin will be cleaved prior to metaphase in mitosis. B) Cohesin will not be cleaved during mitosis or meiosis. C) Cohesin at the centromeres of sister chromatids will be cleaved during meiosis I. D) Cohesin on the arms of sister chromatids will be cleaved during meiosis II. E) Cohesin will be cleaved normally during mitosis and meiosis I.
The likelihood that a pathogen will make its host seriously ill is
a. pathogenicity. b. opulence. c. virulence. d. invasiveness. e. competence.
Which of the following is NOT true of proteins?
a. They determine the structure and function of cells and tissues. b. They function as receptors. c. They function in recognition. d. They are the code for molecules that are important for life processes. e. They enable cells to communicate.
Which of the following best describes the pattern of microbial death?
A) The cells in a population die at a constant rate. B) All the cells in a culture die at once. C) Not all of the cells in a culture are killed. D) The pattern varies depending on the antimicrobial agent. E) The pattern varies depending on the species.