What happens to your blood pressure when you run?
a. Only your diastolic blood pressure elevates.
b. Both your diastolic and systolic blood pressures elevate.
c. Both your diastolic and systolic blood pressure stay the same.
d. Only your systolic blood pressure elevates.
Ans: d. Only your systolic blood pressure elevates.
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Alan Cooper, Cécile Mourer Chauviré, Geoffrey Chambers, Arndt von Haeseler, Allan Wilson and Svante Pääbo investigated the evolutionary relationships among some extinct and living species of flightless birds. They concluded that kiwis are more closely related to African and Australian flightless birds than they are to the moas. What new hypothesis did they propose based on this conclusion?
A. That their data was incorrect and the sample from the museum was corrupted. B. That flightless birds only occurred once in New Zealand. C. That New Zealand was colonized twice by ancestors of flightless birds. D. That the South American species' ancestors flew to New Zealand before the flightless mutation occurred. E. That the North American flightless bird originated from an ancestor of the New Zealand species.
At times when Earth’s climate was cooler than it is today, the polar ice caps ____, rainfall ____, and sea levels ____
a. retreated; increased; rose b. retreated; decreased; fell c. grew larger; increased; fell d. grew larger; increased; rose e. grew larger; decreased; fell
To treat severe combined immunodeficiency (SCID) by gene therapy, a patient’s white blood cells are removed,
followed by the delivery of a normal gene into the cells. The altered cells are then returned to the patient’s body. This is an example of _____ gene therapy. a. enhancement b. germ-line c. viral d. in vivo e. ex vivo
What is the first part of the seedling to come out during germination?
a. plumule b. radicle c. cotyledons d. leaves e. coleoptile