For photosynthesis in green plants, the electron donor for the light dependent reaction is
A. carbon dioxide.
B. oxygen.
C. RuBP.
D. chlorophyll II.
E. water.
E. water.
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An organism that many women carry as part of their normal genital microbial flora that may be transmitted to the neonate during childbirth is:
a. Staphylococcus. b. Escherichia coli. c. S. agalactiae. d. G. vaginalis.
The chorionic villi eventually form the placenta, a disc-shaped structure that ____
a. releases sex hormones at appropriate times throughout pregnancy b. initiates uterine contractions c. binds to the zygote to accelerate organ development d. nourishes the embryo throughout pregnancy e. prevents infection by blocking the passage of microorganisms through the cervix during pregnancy
The Intoxilyzer uses fuel cells to determine the concentration of alcohol in a person's breath.
a. true b. false
Which of these muscles would be most involved in a forcible exhalation, as in a sneeze?
A) sartorius B) rectus abdominis C) deltoid D) gastrocnemius