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Instructions: Answer all questions to get your test result.
1) If a particle enters the cell by active transport, then the particle is
A
more concentrated outside the cell than inside it
B
being moved without the use of energy
C
more concentrated inside the cell than outside it.
D
needed for synthesizing a large molecule
2) A thermostat maintains an ideal temperature of a room. What cell process is similar to this?
A
photosynthesis
B
active transport
C
homeostasis
D
food storage
3) Which energy conversion takes place in some plant cells, but never in animal cells?
A
light energy to chemical energy
B
chemical energy to light energy
C
chemical energy to the energy of motion
D
the energy of motion to sound energy
4) During which phase of mitosis does the cell copy its DNA?
A
interphase
B
metaphase
C
anaphase
D
prophase
5) egg and sperm are types of sex cells called
A
somatic cells
B
body cells
C
gametes
D
embryos
6) these are usually found at the opposite ends of a cell during mitosis or meiosis and they are used to help pull the cell apart?
A
centriole
B
partner chromosome
C
spindle fibers
D
chromosome
7) This process is a form of active transport that moves three sodium ions to the outside of a cell for every two potassium ions that it moves to the inside of the cell. Which of these best explains why energy is needed for active transport?
A
Ions are trapped inside the plasma membrane.
B
Ions are negatively charged
C
Ions are attached to large proteins.
D
Ions are moved against the concentration gradient.
8) Active transport is a way for molecules to move across the cell membrane. When active transport is used to move molecules, what is required?
A
energy
B
a concentration gradient
C
osmosis
D
very small molecules
9) Individuals who lack lactase are unable to break down the sugar n milk (lactose). Which term best describes lactase?
A
Carbohydrate
B
Lipid
C
Enzyme
D
Fatty Acid
10) Which of these statements best explains the process of energy conversion that takes place in the mitochondria?
A
Water molecules and radiant energy are necessary for anaerobic respiration to take place.
B
Oxygen molecules release energy in the form of heat during combustion reactions.
C
The energy in the bonds of glucose molecules is transferred to the phosphate bonds in ATP.
D
Energy is required for carbon dioxide molecules to form six-carbon sugar molecules.
11) Which cellular process takes place in the ribosomes that are bound to the endoplasmic reticulum?
A
The synthesis of new proteins
B
The breakdown of waste material
C
The conversion of radiant energy to glucose
D
The replication of nucleic acids
12) Which group of organelles is directly responsible for the production of new molecules within a cell?
A
Ribosomes, the endoplasmic reticulum, and Golgi apparatuses
B
The nucleolus, vacuoles, and ribosomes
C
Golgi apparatuses, lysosomes, and the plasma membrane
D
The endoplasmic reticulum, plastids, and vacuoles
13) Which organisms help to reduce overpopulation in a deer herd?
A
Primary Consumer and parasites
B
parasites and predators
C
Primary consumers and predators
D
parasites and scavengers
14) Eliminating an organism from an ecosystem would have which of the following effects?
A
help balance the ecosystem
B
Plants will die and go extinct
C
increased carbon dioxide
D
food chains would be disrupted
15) One organism benefits and the other neither benefits nor is harmed
A
Commensalism
B
Neutralism
C
Parasitism
D
Mutualism
16) Which of the following describes why organisms with good traits or characteristics survive to reproduce?
A
None of the above
B
Punctuated equilibrium
C
Survival of the fittest
D
Acquired traits
17) What is the movement of genes into and out of a gene pool called?
A
random mating
B
direct evolution
C
migration
D
nonrandom mating
18) Upon close examination of the skeleton of an adult python, a pelvic girdle and leg bones can be observed. These features are an example of _____?
A
artifical selection
B
homologous structures
C
bestigal structures
D
comparative embryology
19) Which condition is essential for natural selection to result in a new species?
A
unlimited resources
B
a static environment
C
an inherited variation
D
a long life span
*select an answer for all questions
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