EOC Biology Final Practice Test-1 ***

Which amino acids are coded for by an mRNA segment that reads GUA-CAC?

• lysine and alanine

• valine and histidine

• valine and glycine

• glycine and serine

How does crossing-over during meiosis lead to genetic variation?

• It increases the number of gametes produced

• It adds additional genes to the parent chromosome

• It doubles the number of chromosomes in the gametes

• It increases the number of possible genetic combinations in the offspring

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NGSS.HS-LS4-2

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Which of the following is evidence that the environment influences the expression of genetic traits?

• A child with two recessive genes for cystic fibrosis will have the disease

• The son of hemophiliac parents will also have hemophilia

• A child needs only one gene for Huntington disease to develop the disease

• A healthful diet can help a person with a genetic predisposition for type 2 diabetes avoid the disease

In which of these ways are prokaryotic and eukaryotic cells similar?

• They both contain DNA

• They both contain a nuclues

• They are both highly complex

• They are both enclosed by a cell wall

Which phrase best summarizes the function of structure D ?

• storing food

• maintaining water balance

• moving and capturing food

• detecting light sources

A single muscle cell is isolated and observed. Which organelle would you expect to be abundant in the cell?

• ribosomes

• mitochondria

• Golgi bodies

• lysosomes

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NGSS.HS-LS1-7

How do buffers help maintain homeostasis within a cell?

• by regulating pH levels

• by regulating water levels

• by regulating temperature

• by regulating glucose levels

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NGSS.HS-LS1-3

Which effect is mostly likely after an area experiences a tsunami?

• The ratio of prey animals to predators in the area will increase

• The population density of the area will increase

• Competition in the area will decrease

• The carrying capacity of the area will decrease

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NGSS.HS-LS4-5

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Which type of behavior is demonstrated when mature salmon travel long distances from the ocean to find the stream of their birth?

• estivation

• migration

• hibernation

• trial and error

One of the gases released by burning fossil fuels is CO2. Burning fossil fuels also produces compounds of sulfur and nitrogen. Since the Industrial Revolution, the amount of CO2 in the atmosphere has increased significantly. In the future, if all new businesses used energy instead of fossil fuels, which of the following would be the most likely result?

• Polar ice caps would be replenished with fresh ice

• Average temperature around the world would decrease

• The rate of global warming would decrease

• The pH of lakes and rivers would go down

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NGSS.HS-ESS2-4

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