Biology EOC Review #2

Which molecule is paired with its correct role in protein synthesis?

• Nucleus - forms peptide bonds

• ribosome - carries DNA instructions

• mRNA - joins amino acids

• tRNA - transfers amino acids

Which cellular process converts solar energy into chemical energy?

• respiration

• transpiration

• photosynthesis

• chemosynthesis

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Which best explains why a bacterial cell is classified as a prokaryote?

• the presence of a nucleus

• the absence of a nucleus

• the presence of a cell wall

• the absence of a cell wall

in certain species of roses, white roses and red roses are incompletely dominant to each other. When a red rose and a white rose are crossed, a pink rose is produced. What is the probability or producing a white rose when a red rose is crossed with a pink rose?

• 100%

• 75%

• 25%

• 0%

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A diagram of a cell is shown below. Proteins are synthesized in which number organelle?

• 1

• 2

• 3

• 4

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The diagram below shows the feeding relationships for four coral reef organisms.

Humans sometimes kill giant tritons in order to collect their attractive spiral shells. If humans kill most of the giant tritons in a coral reef, the coral population will most likely..

• decrease due to a decrease in the parrot fish population

• increase due to an increase in the parrot fish population

• increase due a decrease in the crown-of-thorns sea star population

• decrease due to an increase in the crown-of-thorns sea star population

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in the late 1800s Christiaan Eijkman studied a disease called beriberi, which is caused by a vitamin deficiency. A disease similar to beriberi occurred in chickens that were fed polished rice, which is rice that has had the bran layer removed. Chickens that ate unpolished rice did not get the disease.

Eijkman convinced officials of a prison experiencing an outbreak of the disease to start feeding the prisoners unpolished rice. The rate of beriberi decreased dramatically. Which procedure would best convince other scientist who questioned his results?

• Feed prisoners chickens that ate only unpolished rice.

• Provide the same number of prisoners with polished rice as with unpolished rice.

• Study other types of animals that had a disease similar to beriberi

• compare chickens that ate polished rice to prisoners who are polished rice.

What is the primary function of DNA in organisms?

• binds specific active sites

• stores genetic information

• transports amino acids to the ribosomes

• produces chromosomes for sexual reproduction

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The roots of some plant species have a special coating to help resist rotting in extremely wet weather. In which environment is it most beneficial for plants to have rot-resistant roots?

• 
• 
• 
• 

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An ecologist performed a study to determine how the rate of photosynthetic activity in a lake changed from month to month. The results of the student are shown in the graph below. Which conclusion is best supported by the evidence?

• photosynthetic organisms were dormant during the months of April through August.

• The rate of photosynthesis increased from June through December

• The rate of photosynthesis was greatest during the months of May through July

• Photosynthetic organism experienced die-off during the months of January through June

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