Which macronutrient serves a role in enzyme function support, as well as nutrient transport regulation?
a. magnesium
b. potassium
c. calcium
d. nitrogen
c. calcium
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What is the outcome of crossing two pure-breeding plants with antagonistic traits?
A) Only one of the traits will be seen in the progeny. B) Both traits will be seen in the progeny. C) Both traits will be seen in the progeny in a 3:1 ratio. D) Only one trait will be seen and it will be the trait of the female.
Assume that an mRNA molecule beginning with an AUG is made that is complementary to this DNAsequence:3
'?CTTACATGGCATCC?5' See the genetic code table above. The second codon (counting the start codon as the first codon) directs incorporation of which amino acid in the polypeptide?
a. asparagine b. tyrosine c. arginine d. proline e. cysteine
Which of the following is most likely to occur after the lipid bilayer is pierced?
A) The membrane reseals. B) The membrane collapses. C) A tear is formed. D) The membrane expands.
The nucleolus organizer region (NOR) is responsible for production of what type of cell structure?
A) ribosome B) endoplasmic reticulum C) nucleolus D) mitochondria E) chromatids