In the late 1800s, Streptococcus pneumoniae was widely recognized as a major cause of pneumonia and is still the most common cause of the disease today. Based on its name, what shape is this organism?
What will be an ideal response?
Rod
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Which of the following is not a correct pairing of structure and function?
A. circular muscle layer: contraction increases the diameter of the lumen B. longitudinal muscle layer: contraction shortens small sections of the gut C. serosa: protection of the gut D. mesentery: supports the gut in the abdominal cavity E. mucosa: secretes mucus
Which of the following is a major function of the ovaries?
A. They manufacture the sex hormones, estrogen and progesterone. B. They comprise the canal through which babies are delivered. C. They are the organs directly responsible for a woman's orgasm. D. They hold and nourish the developing fetus.
If the gene encoding the enzyme rubisco is mutated such that it is nonfunctional, the process that would be affected is the ability to
A. make ATP. B. fix carbon. C. harvest photons. D. make O2. E. make NADPH.
The folding of a polypeptide into a three-dimensional shape is its (secondary/tertiary/quaternary) structure
What will be an ideal response?