organism.
2. Biotic - ANSWER Living. Matter is considered ______ if it was ever
alive at some point in time
3. Atom - ANSWER Smallest level. The basic unit of matter. Consists of a
dense nucleus surrounded by electrons.
4. Molecule - ANSWER Second level. A chemical structure consisting of at
least two atoms held together by a chemical bond.
5. Which stage of cellular respiration releases carbon dioxide as a product? -
ANSWER Krebs cycle
,6. Which stage of cellular respiration releases the most energy and, therefore,
produces the most ATP molecules? - ANSWER Electron transport chain
7. In the human body, muscle fibers metabolize sugars to produce energy. Fast-
twitch muscle fibers, like those used during short-term, vigorous exercise,
carry out an anaerobic process that produces less energy per sugar molecule
processed.
8. Which metabolic process do fast-twitch muscle fibers carry out? -
ANSWER Fermentation
9. Fermentation uses sugar in the absence of which molecule? -
ANSWER O 2
10.A subatomic particle has a negative charge and is found in a shell of the
atom.
11.What is this particle? - ANSWER An electron
12.What is the charge of a proton? - ANSWER +1
13.A molecular bond results from an electron being transferred from one atom
to another.
14.Which type of bond holds these atoms together? - ANSWER Ionic
,15.Which situation describes covalent bonding? - ANSWER An atom shares
an electron with another atom.
16.Which substance is found in ATP? - ANSWER Nitrogenous base
17.During the Calvin cycle, a sugar molecule is formed as ATP is converted into
ADP and a free phosphate group.
18.What is happening to energy in this second step of photosynthesis? -
ANSWER Energy is being released from ATP to power the conversion of
a sugar molecule.
19.A biological polymer consists of 358 amino acids linked together covalently.
20.What is this polymer? - ANSWER A protein
21.A molecule consists of a chain of glucose monomers linked together.
22.What is the function of this molecule within the cell? - ANSWER To store
energy
23.After a rainy day, a leaf has small droplets of water on its surface.
24.Which property of water is this an example of? - ANSWER Cohesion
, 25.A plastic water bottle is filled with water and placed in the freezer. The next
day the frozen water has expanded, causing the plastic bottle to rupture.
26.Which characteristic of water is this an example of? - ANSWER Density
27.Which of the following carries the information that determines which amino
acids are used to make a protein? - ANSWER Messenger RNA
28.In which eukaryotic organelle does protein assembly and modification
occur? - ANSWER Endoplasmic reticulum
29.A gene contains the sequence CGCATACGGTAC that results in the amino
acid sequence arg-ile-arg-tyr. A mutated version of this gene has an A in
place of the second C and produces the amino acid sequence arg-ile-arg-tyr.
30.What is true regarding this mutation? - ANSWER The mutated gene
results in the same amino acid sequence and will result in the same
phenotype.
31.Which pattern of inheritance is described when a phenotype results from the
interaction of many genes? - ANSWER Polygenic inheritance
32.A dog breeder mates two black Labrador retriever dogs. The breeder is
surprised by the offspring produced by this crossing. In addition to offspring
with beautiful black coats, there are dogs with brown, gray, and tan coats.