All organisms that photosynthesize fit into which nutritional category?
A) mixotroph
B) heterotrophs
C) autotrophs
D) parasites
C
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Answer the following statements true (T) or false (F)
1. The first truly bipedal primates were the australopithecines. 2. Our species, Homo sapiens, had been in existence for only somewhat more than 50,000 years when it moved out of Africa and replaced Neanderthal Man, another species of human, about 30,000 years ago. 3. Several species of humans have occurred together in the same time and place in the past. 4. The most recent fossil and DNA evidence supports the idea that modern humans (Homo sapiens) evolved from a single stock from Africa rather than from multiple stocks in different parts of the world.
The earliest humans used tools to
a. assist in locomotion. b. provide protection. c. facilitate the processing of food. d. ward off predators. e. construct shelters
If the Avery-MacLeod-McCarty transformation experiment was carried out in an RNA world, the transforming activity would be destroyed by:
a. RNase. b. lipase c. DNase d. protease
Population bottlenecks occur when:
a. a large number of genetically diverse individuals find a new population. b. population size dramatically increases. c. a consistently large population experiences a brief period of small size. d. drift in consistently small populations become fixed for a single allele. e. when inbreeding is high.