Suppose someone told you that the activities of a pregnant female have no effect on the embryo during early embryonic development because the placenta is not fully formed until later. How would you respond to this statement?
What will be an ideal response?
This is certainly an inaccurate statement because the embryo is particularly susceptible to damage during periods of rapid development, some of which occur prior to complete placental development. Often, some of this damage can be done before the female even realizes that she is pregnant.
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When does a C4 plant use rubisco?
a. daytime only b. nighttime only
c. summer only d. winter only e. anytime the Calvin cycle is occurring
Which connective tissue lacks fibroblasts, or a true matrix, and contains few fibers?
a. muscle b. blood c. adipose d. bone
All the following have some sort of hardened
endoskeleton EXCEPT a. sea stars. b. sea urchins c. fish. d. sea anemones. e. turtles.
HPV infection is linked to what type of cancer?
a) Cervical cancer b) Pancreatic cancer c) Breast cancer d) Testicular cancer