There is a trait with two alleles. One allele codes for blue while the other allele codes for yellow. If this trait is inherited in a codominant manner, what color will the offspring most likely be?
A. yellow
B. blue
C. white
D. blue-and-yellow striped
E. green
Answer: D
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Ligand binding to a receptor kinase results in:
A. phosphorylation of the cytoplasmic domain of the receptor. B. binding of cytoplasmic signaling molecules. C. receptor dimerization. D. All of these answer options are correct.
Upon transmission of a nerve signal to a muscle cell, ________ is released from the sarcoplasmic reticulum through a gated channel.
Fill in the blank(s) with the appropriate word(s).
A reaction involving Substance X yields among its products one denoted as XH. What conclusion can be drawn from this fact?
a. Substance X has absorbed a neutron, becoming an unstable heavy isotope. b. Substance X has been reduced after accepting an electron from another reactant. c. Substance X has formed a hydrogen bond with the other reactants in this reaction. d. The products of this reaction are Substance X and a significant amount of heat.
Treating a solution from S strain Streptococcus pneumoniae with an enzyme that destroys would prevent it from transforming the R strain of bacteria into a form that would cause pneumonia in mice.
A. proteins or lipids B. lipids C. DNA or proteins D. proteins E. DNA