The general term that describes the uptake of oxygen from the environment and the disposal of carbon dioxide at the body system level is 

A. respiration.
B. diffusion.
C. exhalation.
D. cellular respiration.
E. inspiration.


A. respiration.

Biology & Microbiology

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Nondisjunction of a single pair of autosomes can lead to all of the following except  

A.  aneuploidy. B.  monosomy. C.  trisomy. D.  euploidy.

Biology & Microbiology

A purine or pyrimidine that is attached to a sugar, either ribose or deoxyribose, which is attached to one or more phosphate groups is called a ________.

A. nitrogenous base B. nucleic acid C. nucleoside D. nucleotide

Biology & Microbiology

Basophils, eosinophils, and neutrophils are also known as 

A. leukocytes. B. platelets. C. lymphocytes. D. RBCs.

Biology & Microbiology

Diatoms

A) are autotrophs with a glassy cell wall that contains silica. B) are mixotrophs. C) are heterotrophic protists that decompose dead plants and animals in freshwater habitats. D) include the malaria parasite.

Biology & Microbiology