Autosomal monosomy is not seen in live births because:a
its effects are so small as to be overlooked.
b. its effects do not set in until adulthood.
c. its effects are so lethal as to cause spontaneous abortion early in pregnancy.
d. it only occurs in sex chromosomes and therefore does affect nonreproductive function.
e. they lead to the establishment of a clone of abnormal cells
C
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Each intact ribosome consists of a large and a small subunit made mostly of catalytic rRNA. A ribosome also consists of:
a. structural proteins b. free amino acids c. DNA d. lipids e. enzymatic proteins
A digestive system with _____ is able to carry out various tasks of digestion at once
a. bilateral symmetry b. collar cells c. a one-way tube, a mouth, and an anus d. radula e. a two way sac-like cavity
When does the GTP bound to -tubulin hydrolyzed to GDP and Pi?
a. During formation of the -dimer b. During polymerization of dimers onto microtubules c. During depolymerization of dimers from microtubules d. Following polymerization but before depolymerization e. Following depolymerization of dimers from microtubules
Some viruses, such as human herpesvirus 1, infect a cell without causing symptoms. These are called
A) latent viruses. B) lytic viruses. C) phages. D) slow viruses. E) unconventional viruses.