Restriction enzymes are naturally produced by and isolated from
A. bacteria.
B. bacteriophages.
C. human cells.
D. plant cells.
Ans: A. bacteria.
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The amount of energy in a system that cannot be used to perform work is referred to as ____
Fill in the blank with the appropriate word.
A parasite such as a tapeworm can be picked up from eating undercooked meat. Symptoms
often include nausea and stomach cramps. This is an example of __________.
a. a disease b. an infection c. both a disease and an infection
A typical systolic pressure for a normal adult is ____
a. 60 mm Hg b. 80 mm Hg c. 100 mm Hg d. 120 mm Hg e. 140 mm Hg
Which of the following statements about eukaryotic DNA replication and the cell cycle is false?
a. the decision about whether to replicate is determined by a complex pathway that regulates the cell cycle b. the duplicated chromosomes are segregated to daughter cells during mitosis at random c. chromosomes reside in the nucleus d. each chromosome consists of many replicons e. replication requires coordination of the replicons to reproduce DNA during a discrete period of the cell cycle