Most neurons have formed by the ____, allowing reflexive movements.
A. first trimester
B. fourth month
C. third trimester
D. ninth month
E. seventh month
Answer: E
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A particular gene has a mutation in its NFR that causes it to bind abnormally tightly to histones. What effect would you expect this mutation has on the expression of this gene?
A. The expression of the gene would be abnormally high. B. The effect on gene expression is impossible to predict. C. The gene would encode a different protein instead. D. The expression of the gene would be abnormally low or absent E. The promoter of the gene will be constantly available to transcription factors and RNA polymerase.
Which one of the following molecules is stored in adipose tissue and serves as an important source of energy for the human body?
A) glucose B) steroids C) glycogen D) triglycerides E) phospholipids
Suppose you wanted to compare two different stain removers to learn which one was better at removing food stains from clothing. What is the dependent variable?
A.) amount of stain B.) ability to remove stain C.) brand of stain remover
All snakes are ovoviparous
a. true b. false