Adenosine deaminase (ADA) deficiency results in

A) hereditary emphysema.

B) neurotransmitter imbalances.

C) severe combined immune deficiency.

D) chronic myelogenous leukemia.


C) severe combined immune deficiency.

Biology & Microbiology

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Members of the genus Thiothrix are sheathed bacteria that can replicate by releasing gonidia from the open end of the sheath.

Answer the following statement true (T) or false (F)

Biology & Microbiology

Following crossing-over, chromosomes with genetic combinations that resemble the parents' chromosomes are called nonrecombinant

Indicate whether the statement is true or false

Biology & Microbiology

Four of the five answers listed below are plants

in which the sporophyte is dominant. Select the EXCEPTION.

a. club mosses b. tomatoes c. cycads d. liverworts e. horsetails

Biology & Microbiology

The pigment responsible for photoperiodism is

a. chlorophyll. b. xanthophyll. c. anthocyanin. d. phytochrome. e. phytoerythrin

Biology & Microbiology