An endocrine gland is a type of organ
A. required for remodeling bone.
B. where hormones are produced and then released into the blood.
C. where neuronal signals are generated.
D. restricted to the production of growth factors.
E. None of the choices are correct.
B. where hormones are produced and then released into the blood.
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Which metabolic process is common to both aerobic cellular respiration and alcoholic fermentation?
(A) Krebs cycle (B) Glycolysis (C) Electron transport chain (D) Conversion of pyruvic acid to acetyl CoA (E) Production of a proton gradient
The common name for the disease caused by human parvovirus B19 is
A) kissing disease. B) fourth disease. C) fifth disease. D) shingles. E) Reyes' syndrome.
Which of the following describes a mechanism that eukaryotic organisms can employ to alter protein production as an alternative to regulating transcription initiation?
A. Catabolite repression plays a role in the synthesis of proteins that break down alternatives to glucose-if the substrate is not present, the proteins will not be made. B. During times of cell starvation, the second messenger ppGpp destabilizes the DNA open complexes that code for rRNA and tRNA, saving energy by halting protein synthesis. C. RNA molecules within the spliceosome can direct alternative splicing of the primary transcript so that different proteins can be made from the same coding region. D. A phosphorelay signal transduction mechanism directs the repression or induction of certain eukaryotic genes to regulate the protein end-products.
Consider a sample of 100 individuals sampled from a population in Hardy–Weinberg equilibrium that are gen-otyped at the single locus
Of these 100 individuals, 25 individuals are A1A1 homozygotes, 45 are A1A2 heterozygotes, and 30 are A2A2 homozygotes. Please list the observed and expected genotypic frequencies of this locus in this sample What will be an ideal response?