Which of the following is not a function of skeletal muscles?
A. movement of bones
B. support
C. protection of internal organs
D. pumping of blood throughout the body
E. maintenance of body temperature
Answer: D
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Matthew noticed that his house plants were wilting badly. Which cell structure had most likely contracted?
A. cytoplasm B. cell wall C. plasma membrane D. vacuole
Suppose you are culturing tobacco in a petri dish at a 10:1 ratio of auxin to cytokinin. To promote only
shoot development you would
a. increase the cytokinin ratio b. increase the auxin ratio c. reduce the auxin level significantly and increase the cytokinin level slightly d. grow the tobacco in the dark e. grow the tobacco in the light
__________ contain identical DNA sequences and are held together by __________ during mitosis
a. Daughter chromosomes; hydrogen bonding b. Daughter chromosomes; ionic bonding c. Sister chromatids; spindle fibers d. Sister chromosomes; histone proteins e. Sister chromatids; centromeres
Which of the following is true about eukaryotic replicons?
a. They are activated in linear order across a chromosome. b. They are generally over 2 Mb in length. c. Generally, replicons in heterochromatin replicate last. d. They are all replicated at the same time during S phase. e. They have distinct, conserved termination regions.