Which of the following is a lens found on electron microscopes but not on light microscopes?

a. Objective lens
b Projector lens
c. Condenser lens
d. Eyepiece lens


Ans: b Projector lens

Biology & Microbiology

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Adding nucleotides onto a growing DNA strand during DNA replication in cells occurs in

a. the 5' ? 3' direction for the leading strand and the 3' ?  (äw 5' direction on the lagging strand. b. either the 5' ? 3' direction or the 3' ? 5' direction on both strands, depending on where replication begins. c. the 5' ? 3' direction only. d. the 3' ? 5' direction for the leading strand and the 5' ? 3' direction on the lagging strand. e. the 3' ? 5' direction only.

Biology & Microbiology

In the resting state, due to the concentrations of sodium and potassium ions on either side of the plasma membrane, the neuron is said to be

a. activated. b. polarized c. unequal. d. charged. e. unbalanced.

Biology & Microbiology

The bones of synovial joints are held in place by ____

a. tendons b. loose connective tissue c. ligaments d. cartilage e. other bones

Biology & Microbiology

The (physiology/metabolism) of an organism is all the chemical reactions that take place in the organism

What will be an ideal response?

Biology & Microbiology