Unit 1 - Cells Flashcards
What does cell theory describe?
Cell theory describes the tree criteria for determining living things
One reason animal cells don’t need a central vacuole is because they often have smaller vacuoles for storage. What is another reason animal cells don’t need central vacuoles?
Animal bodies have skeletons or other means of providing structure
Which cells contain chloroplasts?
Cells in plant leaves
If a particular cell is known to be round and incapable of producing its own food, which one of these organelles would you assume the cell must have?
A plasma membrane
Which statement is correct about organelles that provide energy?
A. They are responsible for protein synthesis.
B. They are found only in animal cells.
C. They are found only in plant cells.
D. They are responsible for cellular respiration.
D. They are responsible for cellular respiration.
What structure separates an animal cell from its surrounding environment?
A plasma membrane
Which organelle is responsible for transporting lipids in the cell?
A. Nucleus
B. Golgi apparatus
C. Mitochondrion
D. rough ER
B. Golgi apparatus
Which statement is correct about rough ER and smooth ER?
A. Rough ER contains ribosomes, and smooth ER transports materials other than proteins.
B. Rough ER transports materials other than proteins, and smooth ER contains ribosomes.
C. Rough ER contains ribosomes, and smooth ER transports proteins.
D. Rough ER transports proteins, and smooth ER contains ribosomes.
A. Rough ER contains ribosomes, and smooth ER transports materials other than proteins.
What helps the plasma membrane function?
Channels and chain-like structures
Where are organelles like mitochondria and the Golgi apparatus found?
Cytoplasm
Which statement correctly describes the function of pumps in the plasma membrane?
A. Pumps glue the plasma membranes of adjacent cells together.
B. Pumps store water in the plasma membrane for later use by the cell.
C. Pumps move substances through the plasma membrane.
D. Pumps hold the plasma membrane together.
C. Pumps move substances through the plasma membrane.
What part of the cell functions to recognize other cells?
Plasma membrane
Unicellular cells must carry out _______ functions of life.
A. All
B. Only one
C. Specific
D. A few
A. Unicellular cells must carry out all functions of life.
Which statement about multicellular organisms is correct?
A. Cells in multicellular organisms can reproduce by binary fission.
B. The cells of a multicellular organism must perform all life functions.
C. Every cell of a multicellular organism is responsible for movement.
D. A multicellular organism has many specialized cells.
D. A multicellular organism has many specialized cells.
How does an amoeba compare with a red blood cell?
A red blood cell is responsible for a few functions
An amoeba needs to be responsible for all functions necessary for life to survive.
Which statement is correct about a euglena and a white blood cell?
A. A white blood cell can survive on its own, but a euglena cannot.
B. A euglena can survive on its own, but a white blood cell cannot.
C. Neither a euglena or a white blood cell can survive on their own.
D. Both a euglena and a white blood cell can survive on their own.
B. A euglena can survive on its own, but a white blood cell cannot.
What is the function of a nerve cell in a multicellular organism?
Carry and transmit signals
How are red blood cells able to move through narrow vessels to carry oxygen throughout a multicellular organism?
A. They are long and thin with a tail-like end.
B. They are flexible because they lack a plasma membrane.
C. They are small because they lack a nucleus.
D. They are small because their organelles are smaller than those of other cells.
C. They are small because they lack a nucleus.
How do dendrites help the function of nerve cells?
A. They help the neuron block messages from the dendrites of another neuron.
B. They help the neuron receive messages from the axon of another neuron.
C. They help the neuron block messages from the axon of another neuron.
D. They help the neuron receive messages from the dendrites of another neuron.
B. They help the neuron receive messages from the axon of another neuron.
How might a red blood cell work with a neuron to support the function of a multicellular organism?
A neuron may signal when and where oxygen is needed.
How are red blood cells and neurons different?
Neurons contain DNA, but red blood cells do not.
What is the first phase of mitosis?
Prophase
What phase of mitosis do the chromosomes align at the middle part of the cell?
Metaphase
During which stage of the cell cycle does cell division occur?
Mitosis
What is a tumor?
A mass of cells
A student claims that, according to cell theory, the cell is the basic unit of life, and all cells are created spontaneously. Is this student correct? Why or why not?
No, the student is not correct because all cells come from preexisting cells.
Which organelle is found in animal cells?
A. Plasma membrane
B. Central vacuole
C. Chloroplast
D. Cell wall
A. Plasma membrane
A student’s observations of two cells are shown.
Cell: Cell A
Shape: Rectangular
Organelles: Plasma membrane, cell wall, nucleus, central vacuole
Cell: Cell B
Shape: Round
Organelles: Plasma membrane, nucleus
Based on the information, what type of cells are these?
Cell A is a plant cell
Cell B is an animal cell
What organelle functions as the control center of the cell?
Nucleus
Which phrase describes a function of the cell wall?
A. Transporting protein between cells
B. Performing cellular respiration
C. Using chain-like structures to recognize other cells
D. Allowing water and minerals to pass through
D. Allowing water and minerals to pass through
Which sentence correctly describes the differences between plant and animal cells in regards to cell walls and plasma membranes?
A. The cell wall is found only in animal cells, while the plasma membrane is found in both plant and animal cells.
B. The cell wall is found only in plant cells, while the plasma membrane is found only in animal cells.
C. The cell wall is found only in animal cells, while the plasma membrane is found only in plant cells.
D. The cell wall is found only in plant cells, while the plasma membrane is found in both plant and animal cells.
D. The cell wall is found only in plant cells, while the plasma membrane is found in both plant and animal cells.
What feature do multicellular and unicellular organisms have in common?
The cells contain specialized parts
Which statement is correct about the function of the contractile vacuole?
A. It filters water entering a unicellular organism.
B. It filters water entering a multicellular organism.
C. It expels water from unicellular organisms.
D. It expels water from multicellular organisms.
C. It expels water from unicellular organisms.
What specialized cell is responsible for feeling heat?
Neuron
How are dendrites and axons similar?
They are both part of a neuron.
How many cells would result if two cells each underwent three rounds of mitosis?
16
