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3.2.1 Cells And Homeostasis (cells)
Test Description: Aligned with MD 3.2.1--cells, with a focus on cell structures
Instructions: Answer all questions to get your test result.
1) Which cell structure contains molecules that direct cell activities?
A
ribosome
B
mitochondrion
C
chloroplast
D
nucleus
2) The plasma membrane is primarily made up of a(n)
A
protein bilayer
B
enzyme layer
C
cholesterol layer
D
lipid bilayer
3) Keratin is a protein found in hair. Keratin is made in the
A
ribosome
B
nucleus
C
vacuole
D
mitochondria
4) Euglena has a long, whip-like structure extending from the cell membrane that is used for movement. Which of the following do the Euglena use to move?
A
cilia
B
flagellum
C
vacuole
D
pseudopodia
5) Yeast is a fungus made up of eukaryotic cells. When sugar is available, yeast will convert it into energy. What part of the yeast cell completes this energy conversion?
A
the nucleus
B
the cell membrane
C
the ribosome
D
the mitochondrion
6) Mature human red blood cells lose their nucleus during their development. Which of these are, therefore, ABSENT from red blood cells?
A
vacuoles
B
cytoplasm and cytosols
C
membranes
D
chromosomes and nucleic acids
7) Some cells, such as human nerve and muscle cells, contain more mitochondria than other cells. Why do some cells have more mitochondria than others?
A
The cells degrade more proteins.
B
The cells use more energy.
C
The cells divide more frequently.
D
The cells store more nutrients.
8) Which organelle is correctly matched with the cell process it performs?
A
Mitochondrion--control center of the cell
B
Chloroplast--diffusion of water in root systems
C
Ribosome--production of messenger RNA molecules in yeast cells
D
Vacuole--storage site of the cell
9) The false feet of the amoeba is used for movement and ingestion of food particles. What is this called?
A
mitochondria
B
cilia
C
flagella
D
pseudopodia
10) Which of the following process occurs in chloroplasts?
A
mitosis
B
natural selection
C
photosynthesis
D
cellular respiration
11) Some cells have many short, hair-like structures extending from the cell membrane. These structures are used mainly for ___ and are called ___.
A
energy production, mitochondria
B
DNA replication, nucleotide
C
waste removal, excretory
D
cell movement, cilia
12) The natural cycling of oxygen between organisms and their environment is most directly accomplished through which of the following pairs of processes?
A
fermentation and oxidation
B
precipitation and evaporation
C
transpiration and evaporation
D
photosynthesis and respiration
13) Students separated 16 Elodea plants into four equal groups. Each group was exposed to a different number of hours of light. The amount of gas released was measured. Which structure would produce the gas?
A
choloroplast
B
mitochondria
C
ribosome
D
nucleus
14) Which part is responsible for energy?
A
nuclei
B
mitochondria
C
chloroplasts
D
cytoplasm
15) Oxygen is produced by the ___ and carbon dioxide is produced by the ___.
A
mitochondria, chloroplasts
B
chloroplasts, mitochondria
C
nucleus, ribosome
D
ribosome, nucleus
16) Specialized proteins control cell division in the amoeba. Which cell part is responsible for making these proteins?
A
chloroplast
B
nucleus
C
mitochondria
D
ribosome
17) A healthy circulatory system is able to deliver excess oxygen and nutrients to cells. Which cell organelle requires oxygen to carry out cellular respiration?
A
mitochondria
B
chloroplast
C
ribosome
D
nucleus
18) Which organelle in mangrove cells converts solar energy into useable energy?
A
chloroplast
B
ribosome
C
nucleus
D
mitochondria
19) The exchange of oxygen and carbon dioxide between the body and the air occurs in the lungs. This exchange of gases takes place at the cellular level. What part of the cell is primarily responsible for this exchange?
A
nucleus
B
cell wall
C
ribosome
D
cell membrane
*select an answer for all questions
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