Plasmids
a. are circular molecules of DNA.
b. are sites for inserting genes for amplification.
c. may be copied by bacterial replication enzymes.
d. will become larger when foreign DNA is inserted.
e. all of these
E
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The "X" shaped chromosomal hereditary material can be packaged in this organelle in eukaryotic cells but not in prokaryotic cells. This organelle is the:
A. ribosomes. B. mitochondria. C. nucleoid. D. chloroplast. E. nucleus.
The observation that schizophrenia is associated with duplications of a certain copy number variant (CNV), while autism spectrum disorders are associated with deletions of the same CNV, suggests that _____
a. CNV mutations are present in all psychiatric disorders b. both disorders have identical phenotypes c. both disorders have an environmental component d. both disorders share common developmental pathways e. neither disorder has a genetic component
What is the main difference in the formation of coal vs. the formation of natural gas and oil?
A. Coal formed mainly from deposits of plants and animals living in oceans and natural gas and oil formed mainly from the remains of plants and animals in swampy anoxic environments. B. Coal takes several million years to form and natural gas and oil take much less time, roughly several thousand years. C. Natural gas and oil require intense heat and pressure to form and coal only requires an anoxic environment. D. Natural gas and oil formed mainly from deposits of plants and animals living in oceans and coal formed mainly from the remains of plants and animals in swampy anoxic environments.
Calcium ions bind to
A. cross bridges. B. actin. C. troponin. D. tropomyosin. E. myosin.