Imagine that you are an archaeologist on a dig somewhere on an East Asian island and than you begin to excavate an area littered with stone tools that also has the remains of an ancient fire
Subsequent carbon dating of the charcoal from the fire yields a date of 100,000 years before the present. Given these circumstances, which species would you expect most likely set that fire? A) Australopithecus afarensis
B) Homo erectus
C) Homo ergaster
D) Ardipithecus ramidus
B
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All laboratory and health care personnel are required to practice safety and utilize specific controls for the management and handling of infectious or potentially infectious materials. This is considered:
a. Exposure plan. b. Standard Precautions. c. Biosafety controls. d. Isolation.
Which of the following statements is true about scientific theories?
1.A theory is a related set of hypotheses that form a broad-ranging explanation of many phenomena. 2.Theories can not be rejected. 3.Once established, theories can not change. 4.Scientists must not change their minds and replace theories in light of new evidence.
Orphaned organelles get lipids using chaperones.
a. true b. false
Unlike Sulfolobus, some Archaea use ________ protein(s) to accomplish cytokinesis.
A. CdvA, CdvB, and CdvC B. FtsZ C. Seg A and Seg B D. Tubulin