CH. 2 Biochemistry Review

Which of the following statements is true?

Which of the following elements and symbol pairs are correct?

Which of the following monomer & macromolecule pair is /are correct?

Which of the following statements is correct? (You can choose more than one, if appropriate!)

Which of the following pairs are correct? (More than one can be chosen!)

Solar panels only use about 20% of solar energy to create electricity. The remainder of the energy is converted to thermal energy. This is an example of

Decomposers are critical to freeing up nutrients for use again in a new producer. This is an example of

Energy received by Earth from the sun is converted into a variety of forms, including chemical energy (glucose) and thermal energy (heat). This is an example of

The loss of ~90% of energy consumed by an animal to the environment as waste & thermal energy is an example of

Solar panels only use about 20% of solar energy to create electricity. The remainder of the energy is converted to thermal energy. This is an example of

Carbon atoms will cycle through the atmosphere to living things through photosynthesis & back to the atmosphere through decomposition.

As an iceberg melts, the temperature of the water molecules in the ice has increased, but the temperature of the water surrounding the ice has decreased.

§Ice reflects sunlight energy, and ocean water absorbs sunlight energy. As the average temperature of the planet increases, more ice melts. This increases the amount of solar energy absorbed by the planet, which increases the average surface temperature further.

Increasing surface temperatures increase the rate of evaporation. As evaporation rises, the skies get cloudier (on average). These clouds reflect solar energy back to space that would otherwise be absorbed, which cools the planet.

Increasing surface temperatures cause semi-frozen soil called permafrost to thaw. The warmer it gets, the more it thaws. This permafrost often contains Methane molecules locked up within its ice in a form known as Methane Clathrates. As the permafrost thaws, these molecules of Methane escape to the atmosphere, where they act as a powerful greenhouse gas.

An increase in a population of mice results in a subsequent increase in the predator snake populations. Too many snakes will eventually cause the mouse population to decline, likewise causing a decline in the snake population.

As carbon dioxide levels in the atmosphere increase, the temperature of Earth rises. As Earth warms, the rate of photosynthesis can increase, resulting in more carbon dioxide being removed from the atmosphere.