What are monocytes, macrophages, lymphocytes?
A. They are white blood cells
B. They are red blood cells
C. They are neutrophils
Select your answer:
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Stress and Mental Health › ViewWhy do 14-year-olds face more peer pressure than 8-year-olds?
A. 8-year-olds don’t have groups of friends; 14-year-olds do
B. 8-year-olds spend less time with their friends than 14-year-olds
C. 8-year-olds aren’t tempted to try risky behaviors; 14-year-olds are
D. 8-year-olds go to bed earlier than 14-year-olds
Cell & Bond › View
Radiolabelled DNA was allowed to replicate twice in a nonradioactive environment. Which of the following is true?
A. All the strands will have radioactivity
B. Half of the DNA will have no radioactivity
C. No strands will have radioactivity
D. Three–fourth of the DNA replicated will have radioactivity.