1. Plants and algae are remarkable in that they can make all the organic compounds they
need from the end product of the Calvin cycle, which is
A. carbon dioxide.
B. NADH+.

C. G3P molecules.
D. RuBP carboxylase.


2. Which one of the following events occurs during Calvin cycle reactions?
A. Chlorophyll energizes electrons.
B. Carbohydrates are produced.
C. ATP is produced.

D. An enzyme helper becomes NADPH.


3. The monomers of nucleic acids, such as DNA and RNA, are known as
A. nucleotides.
B. proteins.

C. nuclei.
D. polypeptides.


4. What happens during glycolysis?
A. Hydrogen ions combine to form water.
B. Oxidation takes place in the matrix of mitochondria.
C. The oxidation of pyruvate forms NADH and CO2.
D. Glucose breaks down into two molecules of pyruvate.

1. The process by which a biologist uses creative thought to find a pattern among isolated facts is called
A. inductive reasoning.
B. proving a theory.

C. simple reasoning.
D. proving a hypothesis.


2. In a eukaryotic cell, a network of protein filaments called _______ help maintain the shape of the cell.
A. organelles
B. the cytoskeleton
C. ribosomes

D. the nucleolus


3. Glycerol is a subunit molecule of a
A. carbohydrate.
B. lipid.

C. protein.
D. nucleic acid.


4. In the electron transport chain, the main purpose of the _______ we breathe is to keep electrons moving along from the first to the last chemical carrier.
A. carbon dioxide
B. nitrogen
C. atoms
D. oxygen

1. The tiny particles that comprise an element are called
A. ions.
B. protons.
C. atoms.
D. nuclei.


2. In cells, a form of active transport is
A. osmosis.
B. a sodium-potassium pump.
C. simple diffusion.
D. facilitated diffusion.

3. In the leaves of flowering plants, where does the process of photosynthesis occur?
A. In chloroplasts
B. In stomata

C. In glucose
D. Between chlorophylls

4. According to the octet rule, an atom with two electron shells is most stable when it contains eight
A. protons.
B. isotopes.
C. electrons.
D. neutrons.

1. The least usable form of energy is
A. a calorie.
B. ATP.
C. food.
D. heat.

2. The energy used by living organisms on Earth comes from
A. the sun.
B. fossil fuels.

C. the oceans.
D. volcanoes.

3. A carbon molecule that has a different arrangement of atoms is known as a/an
A. monomer.
B. peptide.
C. isomer.
D. nucleotide.


4. Single-celled organisms that do not have a membrane-bound nucleus are called
A. prokaryotes.
B. organelles.

C. Golgi bodies.
D. eukaryotes.

1. Which one of the following statements would most clearly refer to a person’s genotype?
A. Susan has blue eyes.
B. Bill is recessive for height and dominant for hair color.
C. Karen has broad shoulders, long legs, and green eyes.

D. Harold inherited high cheekbones.

2. In one kind of abnormal chromosome inheritance called Down syndrome, a child has three copies of
A. chromosome X.
B. chromosome 23.
C. chromosome Y.
D. chromosome 21.

3. The process of reproductive cloning begins by
A. genetically modifying an embryo.
B. genetically modifying a stem cell.
C. placing an adult nucleus in a cell without a nucleus.
D. isolating cells to learn more about how they specialize.


4. In humans, blood type inheritance is an example of
A. complete dominance.
B. codominance.
C. incomplete dominance.

D. predominance.

 

 

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