During glycolysis molecules of glucose are
A. broken down by enzymes to form two molecules of pyruvate.
B. bonded by enzymes to form three molecules of pyruvate.
C. broken down into three molecules of pyruvate.
D. broken down in oxidation, and releasing carbon atoms as CO2.
E. bonded covalently to form two molecules of pyruvate.
A. broken down by enzymes to form two molecules of pyruvate.
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Match each root adaptive type with the plant in which it is found.
1. Buttress roots 2. Prop roots 3. Pneumatophores a. Corn b. Tropical trees c. Mangrove trees
Transport of a molecule across a cell membrane by facilitated diffusion ____
a. does not exhibit specificity for a particular type of molecule b. requires the input of energy c. depends on a concentration gradient d. goes against the concentration gradient e. allows non-polar uncharged molecules to diffuse across a membrane
Which of the following hormones helps the body during long-term stress?
A. epinephrine B. melatonin C. glucocorticoids D. insulin E. calcitonin
As cells enter mitosis, their microtubules disassemble and then reassemble forming the mitotic spindle with a focus at the ________, a special animal cell microtubule-organizing structure.
a) kinetochore b) centromere c) centrosome d) kinetosome e) chromosome