In proteins, nitrogen bases link covalently to ribose in DNA

Indicate whether the statement is true or false.


ANS: F, nucleotides, RNA

Biology & Microbiology

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Transgenic mice carrying a mutant human SOD1 gene are used as models to study _____________________

Fill in the blank(s) with correct word

Biology & Microbiology

Which type of lipid is composed of long-chain fatty acids attached to long-chain alcohols?

a. triglycerides b. phospholipids c. sterols d. waxes e. most neutral fats

Biology & Microbiology

This 1-inch section of the brain controls the breathing rhythm and heart rate

A) temporal lobe B) hippocampus C) occipital lobe D) medulla oblongata

Biology & Microbiology

The term "reducing atmosphere" for the early Earth means that the atmosphere

A. contained little or no carbon dioxide. B. contained little or no free nitrogen. C. was much thinner around the surface of the Earth than now. D. contained only two or three kinds of gases. E. contained little or no free oxygen.

Biology & Microbiology