Answer the following questions true (T) or false (F)
1. T cells are a type of lymphocyte.
2. T cells develop in the thalamus.
3. Helper T cells are also called CD4 cells due to the receptors found on their surfaces.
1. TRUE
2. FALSE
3. TRUE
Biology & Microbiology
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Blood O2 levels have the greatest influence on mammalian breathing rate
Indicate whether the statement is true or false.
Biology & Microbiology
The “Adam’s apple” is located in the ____
a. Glottis b. Pharynx c. Trachea
d. Larynx e. Bronchus
Biology & Microbiology
The __________ valve guards the opening between the right atrium and the right ventricle
a. tricuspid b. bicuspid c. semilunar d. atrial e. mitral
Biology & Microbiology
The first known member of the genus, Homo,
a. H. erectus.
b. H. sapiens.
c. H. neanderthalensis.
d. H. habilis.
e. H. floresiensis
Biology & Microbiology