How are the four types of nitrogen-containing bases in DNA held together in the double helix of DNA?

What will be an ideal response?


The bases are held together via hydrogen bonds.

Biology & Microbiology

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B cells and T cells that react with self-antigens are destroyed by

a. apoptosis. b. phagocytosis. c. cytokinesis. d. diakinesis. e. endocytosis.

Biology & Microbiology

Which of the following is NOT involved in the

formation of a blood clot? a. lymphocytes b. fibrinogen c. thrombin d. fibrin e. platelets

Biology & Microbiology

Active transport ________

A) uses ATP as an energy source
B) can move solutes against their concentration gradient
C) can involve the transport of ions
D) all of the answer options

Biology & Microbiology

One of the cell types that support and assist neurons is ____________________.

A. muscle tissue B. glial cell C. neuron D. nervous tissue E. dendrite

Biology & Microbiology