Within cells, DNA molecules are wrapped around ____ proteins to form ____ fiber, which condenses into __ during cell replication.
A. histone, chromosome, chromatin
B. chromosome, chromatin, histones
C. histone, chromatin, chromosomes
D. chromosome, histone, chromatin
Ans: C. histone, chromatin, chromosomes
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Vocal cords are made of:
a. smooth muscle b. cartilage c. skeletal muscle d. ligaments e. tendons
The major challenge in using adult DNA in the
cloning process is a. purifying the DNA. b. inserting the DNA into cells. c. reprogramming it to function like the DNA of an egg d. turning off unnecessary genes. e. determining what DNA is best to use.
Synapsis between chromosomes in some species is promoted by special DNA sequences known as
A) centromeres. B) telomeres. C) pairing sites. D) chiasmata. E) bouquets.
A(n) ________ is an arrangement of atoms found in a variety of macromolecules
A) buffer B) isotope C) salt D) stereoisomer E) functional group