In carbohydrates, the ratio of hydrogen (H) to oxygen (O) is ________.

A) 1:1
B) 2:1
C) 3:1
D) 4:1


Answer: B) 2:1

Biology & Microbiology

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An essential amino acid is best defined as one that:

A. cannot be synthesized by cellular biochemical pathways. B. is necessary for building proteins. C. cannot be obtained through the diet. D. functions as a vitamin. E. is required in large amounts.

Biology & Microbiology

One would think that deleterious genes would be eliminated by natural selection, yet we have two human genetic disorders with a high carrier frequency, sickle-cell anemia and cystic fibrosis. Why has this high frequency for these conditions remained in the population?

What will be an ideal response?

Biology & Microbiology

What is an action potential?

A. The potential that your body has to complete a movement
B. The collection of dendrites that make up a neuron
C. The movement of hormones in your body
D. The electric signal used by neurons to transfer information

Biology & Microbiology

The shift in the life cycle of land plants between haploid and diploid is known as

A. Alterations of generations B. Meiosis C. Mitosis D. Altering phases

Biology & Microbiology