Why are telomeres a necessary component of linear chromosomes?
A. They direct where DNA synthesis will
begin.
B. They fix mistakes that are made during
DNA replication.
C. They extend the life of cells because DNA
is shortened every time it is replicated.
D. They direct where DNA synthesis will end.
E. None of the answer options are correct.
C
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The thin delicate membrane just attached to the cytoplasm
a. Ectoplasm b. Endoplasm c. Tonoplast d. Protoplasm
The transfer of antibodies in breast milk is a good example of
A. artificially acquired active immunity. B. artificially acquired passive immunity. C. naturally acquired active immunity. D. naturally acquired passive immunity.
Which of the following caused massive declines in U.S. commercial fish populations?
A) recreational anglers B) freak weather events in the 1980s C) huge factory trawlers D) foreign commercial fisherman
Which statement best describes the cell theory?
a. All living organisms grow and develop. b. All living organisms respond to stimuli. c. All living organisms are composed of basic units called cells. d. All living organisms can move from one place to another in order to find food or to escape predators. e. All living organisms can form a population of organisms that is able to adapt to the environment