EOG Review (Molecular Biology/Chemistry) Question Preview (ID: 37574)
EOG Review.
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Which best describes the purpose of food?
a) to kill bacteria
b) to prevent bacteria
c) to eliminate waste materials
d) to provide fuel for cell processes
How would the absence of sunlight affect a plant's ability to grow?
a) the plant could not produce food through photosynthesis
b) the plant could not absorb nutrients through the soil
c) the plant could not absorb water through the soil
d) the plant could not produce carbon dioxide and oxygen
What are the products of cellular respiration?
a) oxygen and glucose
b) oxygen and water
c) carbon dioxide and water
d) carbon dioxide and sugar
Which contains nitrogen and is obtained from the food they ingest?
a) lipid
b) water
c) sugar
d) protein
When an organism oxides food, some of the energy is lost. Which best explains the loss of energy?
a) energy is released as heat
b) energy is converted to waste
c) energy is stored for later use
d) energy is converted to chemical compounds
Jerome mixes two clear liquids together and observes the clear liquids turn cloudy white. Based on his observations, which most likely occurred?
a) Heat was given off.
b) Rust was produced.
c) A precipitate formed.
d) The mass increased.
Which is indicated if a gas forms when two or more substances are mixed?
a) physical change
b) physical property
c) chemical change
d) chemical property
Which best represents a physical change?
a) bubbling
b) condensation
c) formation of a precipitate
d) formation of a new substance
A piece of paper burns, producing heat and light. Which best describes the process of burning?
a) Burning is a physical change. The paper mixes with the oxygen in the air, producing heat and light.
b) Burning is a physical change. The paper changes from a solid to a gas, producing heat and light.
c) Burning is a chemical change. The paper reacts with the oxygen in the air, producing heat and light.
d) Burning is a chemical change. The paper breaks down in sunlight, producing heat and light
The following chemical reaction occurs. (2H2O2 → 2H2O + O2) How many atoms of hydrogen are involved in the reaction?
a) 4
b) 8
c) 2
d) 1
A piece of paper has a mass of 17 grams. When the paper is burned, a chemical change occurs, and both smoke and ashes are produced. Based on the law of conservation of mass, which statement is true?
a) The smoke has a mass of 17 grams.
b) The ashes have a mass of 17 grams.
c) The smoke and ash have a combined mass of 17 grams.
d) The smoke and ash have a combined mass greater than 17 grams.
Two substances react and the mass is recorded. The mass of the products does not equal the mass of the reactants. Which is the best explanation for the difference in the masses?
a) The scale was not balanced.
b) Some of the mixture spilled.
c) Substances were added after the initial mass was recorded.
d) Gas was produced and lost to the environment.
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