Which of the following is not produced by the adrenal glands?
A. glucagon
B. epinephrine
C. norepinephrine
D. glucocorticoids
E. mineralocorticoids
Answer: A
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When a forest gradually merges into a grassland over a wide area, the border between the two landscape patches is referred to as a(n)
A) narrow border. B) convoluted border. C) perforated border. D) ecotone.
DNA is packaged to protect and manage the genetic information of the cell. What is the correct comparison between the packaging units of DNA?
A. While the nucleus contains chromatin substance in general, the nucleosome is a secondary compartment that forms prior to cell division, as a location where chromosomes will replicate and divide. B. The histones are protective proteins in chromatids, but the nucleosomes and centromeres are part of the actively dividing chromosomes. C. Chromosomes are the distinct folded units containing the DNA molecule, while chromatin in the nucleosome is the location of the associated proteins. D. While chromatin is the collective term for the substance of DNA and associated proteins, chromosomes are the distinct units that are compact and visible during cell division. E. While chromosome is the collective term for the substance of DNA and associated proteins, chromatin is the fluid and other molecules in the nucleus, that regulate cell division.
Which of the following is a taxon that contains all the other taxa listed?
A) Kingdom B) Genus C) Family D) Phylum E) Species
The type of mutation that results in a loss of material from the genome is called what?
A) inversion B) duplication C) deletion D) translocation