Before DNA could definitively be shown to be the genetic material in cells, scientists had to show that it could a. tolerate high temperatures b. carry and make copies of information c. be modified in response to environmental conditions. d. be broken down into small subunits

Before DNA could definitively be shown to be the genetic material in cells, scientists had to show that it could

a. tolerate high temperatures.

b. carry and make copies of information.

c. be modified in response to environmental conditions.

d. be broken down into small subunits.

A nucleotide does NOT contain a. a 5 -carbon sugar b. an amino acid c. a nitrogen base d. a phosphate group

Briefly describe the conclusion that could be drawn from the experiments of Frederick Griffith.

Which of the following does NOT describe the structure of DNA? (A) double helix (B) nucleotide polymer (C) sugar-phosphate backbone (D) contains adenine-uracil pairs (E) double stranded

A nucleotide does NOT contain a. a 5-carbon sugar. b. polymerase. c. a nitrogen base. d. a phosphate group.

An increase in the greenhouse effect causes an increase in: A. carbon dioxide. B. average temperature. C. oxygen. D. water.

A substance such as tobacco that can cause a genetic change is called a(n) a. polyploidy b. antigen c. mutagen d. collagen

Distinct threadlike structures containing genetic information are called a. ribosomes b. chromosomes c. nuclei d. mitochondria

Before DNA could be shown to be the genetic material in cells, scientists had to show that it could a. tolerate high temperatures.
b. carry and make copies of information.
c. be modified in response to environmental conditions.
d. be broken down into small subunits.

Base your answers on the reading ”Greenpeace en el mundo hispana”. Which of the following pollutants was IE mentioned as a possible cause for the environmental problems along Mexico’s coasts? A. pesticides and garbage. B. toxic waste. C. coal. D. Petroleum

Work in a team of two or three to develop a survey about awareness of environmental issues. Survey local businesspeople and consumers. Possible questions to include: Which items do you recycle? How do you dispose of hazardous materials? Then prepare a report of your findings.

You accept a job as an environmental engineer that pays a salary of $\$45,000$ in the first year. After the first year, your salary increases by $3.5\%$ per year. Write a rule giving your salary $a_n$ for your $n$-th year of employment.

The price of energy does not reflect its real costs. What kinds of hidden environmental costs are not reflected in the price of fossil fuels? How are these costs paid, and by whom? Do you think these costs could or should be figured into the price of oil? How might that be done?