Which of the following species is credited with the first knowledge of fire and cooking meat?

a) Homo habilis
b) Homo erectus
c) Cro-Magnon
d) Australpithecus afarensis
e) Homo sapiens


Answer: b) Homo erectus

Biology & Microbiology

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The structure indicated by the letter "C" above

represents a. actin. b. myofibril. c. myosin. d. myofilament. e. muscle fiber

Biology & Microbiology

Which of the following is false about olive baboons?

a. They live in troops with a well-defined dominance hierarchy. b. Researchers in Kenya are conducting a lengthy study on how social position affects health. c. Low-ranking individuals suffer from chronic stress. d. Low-ranking individuals have abnormally low cortisol levels. e. High-ranking individuals get first access to food, grooming, and sexual partners.

Biology & Microbiology

Fossils of ancient organisms show us _______________ .

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

Biology & Microbiology

Which of the following germ layer-structure is mismatched?

A. mesoderm-notochord B. endoderm-lungs or respiratory tube C. ectoderm-epidermis D. ectoderm-brain E. mesoderm-digestive tract

Biology & Microbiology