Biology EOC review 2

Which process can occur in both mitosis and meiosis?

• fertilization

• independent assortment

• gene mutation

• crossing over

How do some chemicals increase the risk of a person getting cancer?

• by causing cell mutations

• by causing a deficiency of vitamin D

• by causing an increase of toxins in the skin

• by causing a decrease in the immune response

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What is the difference between the DNA of a dog and the DNA of a fly?

• the type of sugar building blocks

• the sequence of nucleotides

• the strength of hydrogen bonds

• the strength of covalent bonds

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Which would be a desirable trait scientists may want to create in a transgenic plant?

• the ability to resist insects

• the ability to grow less fruit

• the ability to change color in the winter

• the ability to use a lot of water

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Which substance do biochemists often search for in fossils to help better understand the evolutionary relationships of the organism that formed the fossil?

• ATP

• DNA

• iron

• oxygen

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Scientists believe that the polar bear in Alaska and the brown bear in Russia evolved

from a common ancestor. Which would be responsible for this evolutionary change?

• artificial selection

• asexual reproduction

• sexual reproduction

• geographic isolation

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What is the basis for the earliest classification system of organisms?

• physical characteristics

• differences in habitat

• evolutionary relationships

• reproductive patterns

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Waxes create a waterproof layer on the outside of some living organisms. To which group

of organic molecules do waxes belong?

• Carbohydrates

• Lipids

• Nucleic Acids

• Proteins

Which best summarizes the role of DNA in the production of proteins?

• DNA moves to the cytoplasm to build proteins.

• DNA transports amino acids to the ribosomes to make proteins.

• DNA contains the instructions used to make proteins.

• DNA breaks hydrogen bonds between amino acids.

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A student noticed that the freshwater plant, Elodea, produced bubbles when placed in

direct light. What could the student most likely conclude?

• Bubbles of carbon dioxide were produced as a result of photosynthesis.

• Bubbles of oxygen were produced as a result of photosynthesis.

• Bubbles of carbon dioxide were produced as a result of cellular respiration.

• Bubbles of oxygen were produced as a result of cellular respiration.

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