Paramecium aurelia has a higher rate of population growth and can tolerate a higher population density than P. caudatum. When both species were introduced into a tube containing a fixed amount of bacterial food, the populations of both species
A) thrived, even though they shared the same food supply.
B) initially increased, after which P. aurelia thrived and P. caudatum died out.
C) initially increased, after which P. caudatum thrived and P. aurelia died out.
D) died out.
B
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The primary purpose of the light-dependent reactions is to ____
a. provide electrons and energy for the light-independent reactions b. generate O2 gas c. make ADP in cyclic photophosphorylation d. transfer electrons to the primary electron acceptors e. produce sugars such as glucose
How does Homo sapiens differ from Homo erectus?
1.H. sapiens has larger facial bones, teeth, and jaw. 2.H. sapiens has a rounder skull. 3.H. sapiens evolved from a different evolutionary lineage than H. erectus. 4.H. sapiens was found in Europe but H. erectus was limited to Africa.
. In Mendel's crosses, pure-breeding individuals were always in the ____________________
generation. Fill in the blank(s) with the appropriate word(s).
An example of a secondary acquired immunodeficiency is
A. adenosine deaminase (ADA) deficiency. B. SCID. C. agammaglobulinemia. D. DiGeorge syndrome. E. AIDS.