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Chapter 1
1) Which of the following is true?
A) A scientific theory is a hunch about a natural event.
B) A scientific fact and a scientific theory carry the same weight in the scientific community.
C) A scientific theory explains what we know to this date about a natural event.
D) A scientific theory is the final answer to a question about a natural event.
2) Choose the answer that best describes the sequence of the scientific method.
A) experiment, observation, hypothesis, conclusion
B) hypothesis, experiment, observation, conclusion
C) guess, hypothesis, experiment, conclusion
D) observation, hypothesis, experiment, absolute fact
E) observation, hypothesis, experiment, conclusion
3) The difference between a theory and a hypothesis is that:
A) a theory must be proven beyond a shadow of a doubt.
B) a hypothesis must be proven beyond a shadow of a doubt.
C) a hypothesis must be supported by evidence.
D) a theory must be supported by evidence.
4) A good hypothesis must:
A) be falsifiable.
B) be false.
C) be theoretical.
D) lead to a question.
E) be true.
5) Which of the following is the correct order of complexity, going from least to most complex?
A) atom, molecule, organelle, cell, tissue, organ
B) organ, tissue, cell, organelle, atom, molecule
C) organ, tissue, cell, organelle, molecule atom
D) molecule, atom, organ, tissue, cell, organelle
E) atom, molecule, organelle, cell, organ, tissue
6) Tissues are:
A) a group of cells that serve a common function.
B) compartments within cells.
C) proteins.
D) organisms.
E) cells.
Chapter 2
7) The subatomic particles that play the greatest role in cellular chemical reactions are:
A) protons.
B) neutrons.
C) electrons.
D) isotopes.
8) You have a substance and begin a set of experiments in which you break it down into other substances
through chemical reactions. After a few successive reactions, you discover a set of products that can't be
broken down further, no matter what type of chemical reaction you attempt. These substances are:
A) protons.
B) elements.
C) neutrons.
D) electrons.
E) isotopes.
9) An atom will react with other atoms only until:
A) it has completely filled its outermost energy level.
B) it has achieved maximum stability.
C) all of its outermost orbitals have been filled.
D) All of the above are true.
10) An atom becomes an ion when:
A) it gains or loses neutrons.
B) it forms a covalent bond.
C) it gains or loses electrons.
D) hydrogen ions are shared.
E) it gains or loses protons.
11) In a bottle of water, hydrogen bonding occurs between the hydrogen of one molecule and:
A) a hydrogen atom in the same molecule.
B) an oxygen atom in a different molecule.
C) an oxygen atom in the same water molecule.
D) a hydrogen atom in a different molecule.
12) Oxygen has six electrons in its second outer shell. How many covalent bonds is oxygen likely to make with
hydrogen, which has one electron in its first outer shell?
A) eight
B) one
C) two
D) six
E) three
13)
Chapter
3
Carbon is such an important molecule for life because:
A) it can be bonded ionically.
B) it can form chemical bonds with a maximum of four other atoms.
C) it can hydrogen bond to so many molecules.
D) it is part of the water molecule.
E) it can form isomers.
14) Which of the following is not a monosaccharide?
A) fructose
B) cellulose
C) glucose
D) deoxyribose
15) Glycogen is a polysaccharide used for energy storage by:
A) plants.
B) animals.
C) monera.
D) fungi.
16) What do polysaccharides, such as cellulose; nucleic acids, such as DNA; and proteins, such as keratin, have
in common?
A) They are all built of chemically linked monomers.
B) They are all amino acids.
C) They are all lipids.
D) They are all carbohydrates.
E) They are all nonpolar.
17) Proteins may function as:
A) hormones.
B) enzymes.
C) structural building materials.
D) transport molecules.
E) all of the above
Chapter 4
18) The basic building compartments of life on this planet are called:
A) phospholipids.
B) energy.
C) proteins.
D) organelles.
E) cells.
19) Prokaryotic cells lack:
A) DNA.
B) proteins.
C) Membranous organelles
D) ribosomes.
20) Which of the following is an example of a eukaryotic cell?
A) an archaea
B) a virus
C) a bacterium
D) a plant cell
21) A secretory protein that exits from the ER within a vesicle will head directly to:
A) the nucleus .
B) the cytosol.
C) the mitochondria.
D) the Golgi complex.
E) the plasma membrane.
22) Which choice below correctly matches organelle with function?
A) lysosome — energy generation
B) smooth endoplasmic reticulum — lipid production
C) mitochondria — food generation
D) cytoskeleton — recycling of materials
23) What maintains cell shape, anchors organelles in place, and moves materials within a cell?
A) cytoskeleton
B) hydrogen bonds
C) cilia
D) Golgi complex
24) The large central vacuole of plants:
A) may make up as much as 90 percent of the internal volume of the cell.
B) replaces the nucleus.
C) allows the plant to produce its own food.
D) produces protein