Why has C. elegans proven to be a useful model for understanding apoptosis?

A) The animal does not naturally use apoptosis, but can be induced to do so in the laboratory.
B) The nematode undergoes a fixed and easy-to-visualize number of apoptotic events during its normal development.
C) This plant has a long-studied aging mechanism that has made understanding its death just a last stage.
D) While the organism ages, its cells die progressively until the whole organism is dead.


B

Biology & Microbiology

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Which of the following acts as a carrier of foreign DNA and is needed to clone a gene?

A. plasmid B. viral vector C. fungal vector D. plasmid and viral vector E. viral vector and fungal vector

Biology & Microbiology

Neutrophils are the second phagocytic cell to respond to an infection

Indicate whether this statement is true or false.

Biology & Microbiology

For which of the following diseases would animal models likely yield the most information?

a. alcoholism b. schizophrenia c. bipolar disorder d. Huntington disease e. nicotine addition

Biology & Microbiology

A three-base sequence (loop) in tRNA that is complementary to a three-base sequence in mRNA is

A. a codon B. an anticodon C. a promoter D. a terminator E. an amino acid attachment site

Biology & Microbiology