Which of the Following Is One of Chargaff's Rules About

question 70

Multiple Choice

Which of the following is one of Chargaff's rules about DNA structure?

• A) phosphate groups are connected to sugars by covalent bonds
• B) base pairs connect to each other by hydrogen bonds
• C) the amounts of adenine and thymine are the same as are the amounts of cytosine and guanine
• D) the DNA molecule forms into a double helix
• E) the strands in a DNA molecule run in opposite directions

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Definitions:

Endorphins

“Morphine within”—natural, opiatelike neurotransmitters linked to pain control and to pleasure.

Axon

A long, slender projection of a nerve cell that conducts electrical impulses away from the neuron's cell body.

Neuron

A nerve cell that is the basic building block of the nervous system, responsible for transmitting information through electrical and chemical signals.

Leg Muscle

A group of muscles in the lower limb that are primarily responsible for movement and support of the ankle, foot, and knee.