The buffering capacity of hemoglobin is directly related to its ability to bind with

A) oxygen.
B) carbon monoxide.
C) carbon dioxide.
D) hydrogen ions.
E) nitrogen.


Ans: D) hydrogen ions.

Biology & Microbiology

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Saber teeth found in different groups of extinct carnivorous mammals are considered ___________ structures, as the fossil record shows that saber teeth evolved independently among the groups. 

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

The amoeba E. histolytica is a pathogen that causes liver abscesses in infected individuals. Which of the following represents the most likely metabolic classification?

a. aerobic phototroph b. anaerobic heterotroph c. mixotroph d. phagocytic autotroph

Biology & Microbiology

What percent of all species that have existed

have gone extinct?

a. 10 b. 25 c. 55 d. 75 e. 99

Biology & Microbiology

The passageway that channels ova from the

ovary into the uterus is known as

a. a vagina. b. a uterus. c. an oviduct. d. the corpus luteum. e. all of these

Biology & Microbiology