Because organisms are made primarily of water, they resist rapid temperature changes. This useful quality is based on water's _____.
a. cohesion
b. lower density in the solid phase
c. high specific heat
d. buffering activity
e. ability to form colloids
Answer: c. high specific heat
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What is the type of speciation that can occur in an instant with a change in chromosome number?
a. temporal b. mechanical c. behavioral d. ecological e. sympatric
Now that we know the entire gene sequence of humans, what is the next step for scientists?
1.Determine the function for all the genes. 2.Determine the mutations in the genome that cause disease. 3.Create methods to eliminate bad or disease-causing genes. 4.Determine the DNA fingerprints of humans and chimps to help in the treatment of disease.
The animals used in the text to show variation in
domesticated forms are a. pigeons. b. chickens. c. pigs. d. dogs. e. cats.
Saturated fats are seen only in
a. plants b. animals