Biology EOC Review Day 2

In some ecosystems, wolves have been eliminated due to their threats to humans. How can the reintroduction of wolves benefit the ecosystem?

• It can eliminate weak animals from a prey population, thereby decreasing competition for natural resources

• It can eliminate the most fit animals among the prey population, which will cause an increase in birth rates of the prey

• It can cause the prey population to migrate to other areas, resulting in more fit prey.

• It can cause the prey population to better blend in with their environment.

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What does the graph represent?

• A population with massive emigration.

• A population with unlimited resources.

• A population with too many predators.

• A population reaching carrying capacity.

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What will most likely be the result if all of the mitochondria are removed from a plant cell? 

• It will be unable to carry out respiration. 
• It will lose water through osmosis. 
• It will break down the ribosomes in the cell. 
• It will be unable to photosynthesize

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Fruit fly body cells have 8 chromosomes. After mitosis, you would expect a resulting fruit fly daughter cell to have ...

• 16 chromosomes.
• 46 chromosomes.
• 8 chromosomes.
• 4 chromosomes.

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Replicate the following strand of DNA: 
AATCATGGA

• AATCATGGA
• TTAGTACCT
• UUAGUACCU
• GGATAUCUA

Which RNA bases would pair with TACGAA in transcription? 

• AUGCUU
• ATGCTT
• GCATCC
• GCAUCC

Having freckles is dominant over not having freckles. If two individuals heterozygous for freckles have a child, what is the probability the child will have freckles?

• 0%

• 25%

• 50%

• 75%

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Which statement best describes natural selection?

• As the weather changes, organisms that are able to find shelter need less energy to live.

• Organisms that eat only plants need less food than organisms that eat animals.

• Organisms better adapted to their environment are more likely to reproduce and pass on their traits to their offspring.

• Small organisms are more likely to survive than larger organisms.

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Based on the graph, at what temperature does this enzyme work best? 

• 25 C

• 30 C

• 35 C

• 47 C

The stages of the cell cycle are shown in random order below.  Starting with prophase, sequence the diagrams to show the stages of mitosis.  
                       

• 5-3-1-2-4
• 3-1-4-2-5
• 4-1-2-5-3
• 2-3-1-5-4

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