T or F: lifting free weights is a form of isotonic exercise
What will be an ideal response?
False
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Which of the following elements may have
been the ancestors of cellular life?
a. circular RNA b. prokaryotic cells c. pseudocells d. lipid globules e. protocells
Which of the following statements is correct?
a. the products of photosynthesis are the reactants of aerobic respiration b. the products of aerobic respiration are the reactants of photosynthesis c. the products of photosynthesis are the products of respiration d. the reactants of respiration are the reactants of photosynthesis e. more than one of these is correct
The transformation of marginal lands into near-desert conditions unsuitable for future agriculture is referred to as ________
Fill in the blank(s) with correct word
Which of the following helps maintain the structure of chromosomes and control the activity of genes?
A) the nuclear membrane B) proteins C) centromeres D) ribosomes