Cytology Test: Question Preview (ID: 2513)

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Which of the following best defines cellular respiration?
a) intake of CO2 and output of O2 by cells
b) excretion of waste products
c) inhalation of O2 and exhalation of CO2
d) break down of glucose to produce ATP, H2O, and CO2.

mRNA will influence the production of __________.
a) ribosomes
b) the nucleus
c) proteins
d) mitochondria

Transcription can be best described as the:
a) break down of tRNA.
b) reading of mRNA codons by tRNA.
c) replication of DNA.
d) synthesis of mRNA.

The G1 and G2 phases of cell growth are separated by:
a) anaphase.
b) the S phase.
c) telophase.
d) Interphase

When the chromosomes align themselves across the middle of the spindle fibers, it is characteristic of
a) prophase
b) metaphase
c) anaphase
d) telophase

If a species of animal had 24 pairs of chromosomes in its normal body cells, its gametes would contain:
a) 24 chromosomes
b) 12 chromosomes
c) 48 chromosomes
d) 6 chromosomes

The preferred energy fuel of the body is _____.
a) cholesterol
b) glucose
c) amino acids
d) fatty acids

Which of the following is true of metabolism?
a) It involves only a physical breakdown of foods.
b) It only occurs outside of cells.
c) It involves both synthesis and decomposition.
d) Energy is released from the processes of anabolism and catabolism.

The process that involves the passing of water and permeable solutes through a membrane by hydrostatic pressure is called ___________.
a) osmosis
b) filtration
c) facilitated diffusion
d) active transport

In nondividing cells, DNA appears as unwound threads that are referred to as:
a) chromatin.
b) chromosomes.
c) histones.
d) ribosomes

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