Consider the following two statements about protein structure: 1) All polypeptides have tertiary structure. 2) All proteins have quaternary structure. Determine which one of the statements below is correct
A. Statements 1) and 2) are both true.
B. Statements 1) and 2) are both false.
C. Statement 1) is true; statement 2) is false.
D. Statement 1) is false; statement 2) is true.
Answer: C
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An experimenter wanted to test the effects of
cigarette smoking on rats. She infused the cages of 50 rats with cigarette smoke and the cages of another 50 rats with pure, clean air. The rats that received the clean air were the
a. experimental group. b. control group. c. model group. d. predictive group. e. independent group
When the birth rate plus immigration equals
the death rate plus emigration the result is a. logistic growth. b. exponential growth. c. population saturation. d. zero population growth. e. geometric growth
Which of the following breaks down the slowest during decomposition?
A) simple sugars B) cellulose C) chitin D) lignin
The acidity or alkalinity of a solution can be measured in terms of ________
Fill in the blank(s) with correct word