What does a scientist do after making observations?
A) Formulate a hypothesis
B) Conduct an experiment
C) Think of questions
D) Draw a conclusion
Ans: A) Formulate a hypothesis
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A pH of 10 is how many times as basic as a pH of 7?
a. 2 b. 3 c. 10 d. 100 e. 1000
A population's density is calculated as the
A) area over which the population is distributed. B) number of individuals within the population. C) unit of area divided by the number of individuals. D) number of individuals per unit area.
Which compounds are produced in the chloroplast and used by the mitochondria?
A) water, carbon dioxide, ATP B) glucose, oxygen, carbon dioxide C) glucose, oxygen D) carbon dioxide, ADP, glucose
The endosymbiotic theory suggests that chloroplasts evolved from cyanobacteria. What features of cyanobacteria support this premise?
What will be an ideal response?