Marceau is studying small single-celled organisms that contain phospholipid membranes. These organisms can be broadly classified into the domain:
A. Bacteria
B. Animalia
C. Fungi
D. Protista
A. Bacteria
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All of the following about Homo habilis is true except
A. the species lived in Africa for 500,000 years and then became extinct. B. the species coexisted with dinosaurs. C. the species was replaced by a new kind of human, which had a larger brain. D. the species was small in stature. E. the species was associated with tools.
If you were studying the ecology of a marsh community, what components would you need to consider?
What will be an ideal response?
Which hypothalamic hormone contributes to the regulation of the male reproductive system?:
a. luteinizing hormone b. gonadotropin-releasing hormone c. follicle-stimulating hormone d. androgens
The structural framework in a cell is the
a. extracellular matrix. b. endoplasmic reticulum (ER). c. cytoskeleton. d. plasma membrane. e. endomembrane system