Through control of gene expression, a bacterial cell responds to changing ________ conditions.
A. internal
B. protein
C. genetic
D. environmental
Answer: D
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A patient with a blood pressure of 120/75, a pulse rate of 70 beats/minute, a stroke volume of 70 mL/beat (milliliters per beat), and a respiratory rate of 25 breaths/minute will have a cardiac output of _____
A) 70 mL/minute B) 1,000 mL/minute C) 1,750 mL/minute D) 2,800 mL/minute E) 4,900 mL/minute
What is the significance of the fossil Archaeopteryx?
a. It establishes the time sequence of the transition from dinosaur to birds. b. The bones of this animal were the first to be used for radiometric dating, which allowed the absolute age of the fossil to be determined. c. It was the first fossil discovered from which both physiological and anatomical data could be gathered. d. It was the first reptile–bird fossil discovered and helped to establish the relationship between birds and dinosaurs.
Genetic drift is primarily associated with relatively small breeding populations
Indicate whether the statement is true or false
For each of the following sentences, fill in the blanks with the best word or phrase selected from the list below. Not all words or phrases will be used; each word or phrase may be used more than once
To reproduce sexually, an organism must create haploid __________________ cells, or __________________, from diploid cells via a specialized cell division called __________________. During mating, the father's haploid cells, called __________________ in animals, fuse with the mother's haploid cells, called __________________. Cell fusion produces a diploid cell called a __________________, which undergoes many rounds of cell division to create the entire body of the new individual. The cells produced from the initial fusion event include __________________ cells that form most of the tissues of the body as well as the __________________-line cells that give rise to the next generation of progeny. allele germ pollen bivalent meiosis somatic eggs mitosis sperm gametes pedigree zygote Fill in the blank(s) with correct word