Which of the following is true in the pine life cycle?
a. Gametophytes originate within and are dependent upon sporophytes.
b. Sporophytes originate within and are dependent upon gametophytes.
c. Both gametophytes and sporophytes are totally independent from each other and are
equally dominant.
d. Gametophytes are free-living and photosynthetic, but are replaced by a dominant
sporophyte generation.
e. Gametophytes are photosynthetic and partially independent from the sporophytes.
A
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Which is not done by ascomycetes? a. All of these are done by ascomycetes
b. Cause human yeast infections. c. Spoils fruits. d. Allows bread to rise. e. Runs fermentation to produce beer and wine.
Which of the following equations reflects the exponential model of population growth?
A) N(t) = b - d B) s = ?N / ?t C) N(t) = N(0)ert D) dN / dt = rN
The part of the atom that has the greatest biological interest and interactions with other atoms is the
A) proton. B) innermost electron shell. C) neutron. D) electron.
What actually begins the uterine contractions which leads to giving birth?
A. Oxytocin B. Prolactin C. Prostaglandins D. Estrogen E. The movement of the fetus