1. Which one of the following is an example of a monosaccharide?
A. Sucrose
B. Cellulose
C. Starch
D. Glucose
2. Any energy transformation involves the loss of some energy as
A. light.
B. electric charge.
C. motion.
D. heat.
3. Sunflowers belong to which of the following kingdoms?
A. Fungi
B. Animalia
C. Plantae
D. Protista
4. Which one of the following molecules is a by-product of cellular respiration?
A. Glucose
B. Pyruvate
C. Water
D. Oxygen
5. All of the rabbits, deer, and several bird species found within a field are considered to be part of a/an
A. population.
B. community.
C. ecosystem.
D. biosphere.
6. The following atoms are all variations of the element carbon: 12C, 13C, and 14C due to differing numbers of neutrons. What are these variations called?
A. Polymers
B. Isomers
C. Isotopes
D. Molecules
7. Which of these statements most accurately describes how carbon dioxide enters a leaf?
A. CO2
is carried by water in leaf veins.
B. CO2
diffuses by way of the stomata.
C. CO2
is pulled in by leaf veins.
D. CO2
enters a leaf through osmosis.
8. Which of these is the smallest structure?
A. Protein
B. Polypeptide
C. Dipeptide
D. Amino acid
9. When a scientific experiment is carried out in a controlled setting, all variables are kept the same except for the _______ variable.
A. environmental
B. observational
C. experimental
D. control
10. The Calvin cycle of photosynthesis begins when
A. light becomes available.
B. the reduction of carbon dioxide occurs.
C. electrons leave a photosystem.
D. carbon dioxide is attached to RuBP.
11. If you immerse a living cell in a hypertonic solution, water will
A. move out of the cell.
B. move into the cell.
C. fluctuate in and out.
D. remain constant.
12. The two major sets of reactions involved in photosynthesis are
A. Calvin cycle reactions and citric acid cycles.
B. glycolysis and the citric acid cycle.
C. light reactions and Calvin cycle reactions.
D. light reactions and the electron transport chain.
13. An insect is able to walk across the surface of a pond without sinking because of the
A. adhesion of the insect's feet to the surface of the water.
B. surface tension of the water.
C. polarity of the water molecules.
D. process of evaporation.
14. The structure that surrounds the cytoplasm in a bacterial cell is the
A. plasma membrane.
B. cell wall.
C. ribsosome.
D. nucleoid.
15. Nucleic acids are composed of monomers called
A. base pairs.
B. amino acids.
C. nucleotides.
D. ribose.
16. Which of the following is a true difference between prokaryotic and eukaryotic cells?
A. Eukaryotic cells are less complex.
B. Eukaryotic cells have true nuclei.
C. Eukaryotic cells are smaller.
D. Eukaryotic cells are more ancient.
17. Which of the following is true about bases?
A. They tend to decrease the pH of a solution.
B. They help to build up cells.
C. They release hydroxide ions in solution.
D. They have a sharp or sour taste.
18. Select the largest, most inclusive biological level from the following choices.
A. Organ
B. Molecule
C. Tissue
D. Cell
19. Which of the following is an important property of water?
A. Water easily changes from liquid to gas.
B. Water temperature rises and falls quickly.
C. Water is a good solvent.
D. Water lacks cohesive properties.
20. As an enzyme fits into a substrate at the active site, it undergoes a slight change to fit into the substrate. This process is defined by a concept known as the
A. active enzyme inhibition scheme.
B. feedback inhibition model.
C. facilitated diffusion process.
D. induced fit model.