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- 1. Multiple Choice
Robert Hooke made this drawing after using a microscope to observe dead cork bark.
What does Hooke's drawing show?
cork cells
cell division
living cells
cell organelles
- 2. Multiple Choice
In his studies of different types of cells under a microscope, Rudolf Virchow saw many of the cells dividing into two cells.
How did Virchow's observations contribute to the cell theory?
He showed that living cells come from other living cells.
He discovered the parts of dead cells.
He showed that all plants and animals are made of cells.
He discovered living cells.
- 3. Multiple Choice
A student wants to make a model of a eukaryotic cell using the resealable plastic bag to represent the cell membrane. The student plans to place objects in the bag to represent different cell parts.
Which object would best represent the cell's nucleus?
golf ball
spaghetti
liquid soap
gravel
- 4. Multiple Choice
Which object made of one or more smaller units would make the best model of a GROUP OF CELLS from a PLANT?
cabinet of drawers
sponge
raisin bread
ball of yarn
- 5. Multiple Choice
The picture shows a model of a cell organelle. We draw it as a circle. What is the main function of this organelle in the cell?
To hold and protect the cell's DNA
To provide the cell with energy for its activities
To store enzymes that break down food
To store food and other materials inside the cell
- 6. Multiple Choice
The picture shows a model of a cell. What is the main function of the part labeled Z in the model (largest organelle in a plant cell)?
To store food and other materials inside the cell
To use energy from sunlight to make sugars
To hold and protect the cell's DNA
To provide the cell with energy for its activities
- 7. Multiple Choice
Which statement describes a self-feeder?
An oak tree takes in energy from sunlight.
A panda finds and eats bamboo branches.
A bacterium gets nutrients from other organisms.
A paramecium sweeps food into a mouthlike structure.
- 8. Multiple Choice
Which term best summarizes the process of self-feeding?
Photosynthesis
Digestion
Homeostasis
Predation
- 9. Multiple Choice
Which statement best explains how the cell membrane helps a cell remove waste?
Carbon dioxide molecules pass out of the cell through the layer of phospholipids.
The cell membrane surrounds particles and forms a vacuole around them.
Oxygen molecules move into the cell through the layer of phospholipids.
Simple sugars enter the cell through a transport protein.
- 10. Multiple Choice
Which two statements explain how a cell's parts help it get nutrients?
1. The chloroplasts take in energy from sunlight and change it into organic matter.
2. _________________________________________
The contractile vacuole collects and squirts excess water out of the cell.
The mitochondria change energy in organic compounds into a form the cell can use.
The nucleus stores instructions needed to make proteins from amino acids.
- 11. Multiple Choice
The diagram is a model of one way that materials move across the cell membrane. Oxygen molecules are represented by two red circles. Carbon dioxide molecules are represented by a gray circle with two red circles attached. The left-hand side of the diagram shows the beginning concentrations of the two types of molecules. The right-hand side shows how the molecules have moved over time. Which sentence best explains the movement of the oxygen molecules over time?
They move to an area with a lower oxygen concentration.
They merge with the cell membrane to form vacuoles.
They move to an area with a higher oxygen concentration.
They become transport proteins in the cell membrane.
- 12. Multiple Choice
A student made this model using paper molecules and a piece of yarn. She wants to show how simple transport works. If the model starts as shown above, what should the final model look like?
- 13. Multiple Choice
Which processes will be involved as this chick grows into a chicken?
Cell division that involves mitosis and Cell growth due to taking in nutrients
Cell growth due to taking in nutrients and Cell division that involves meiosis
Cell division that involves meiosis and Cell growth due to fertilization
Cell growth due to fertilization and Cell growth due to taking in nutrients
- 14. Multiple Choice
The photo shows a single-celled organism called a euglena. Which sentence best describes what will happen to the cell as it grows?
It will become larger by taking in nutrients.
It will divide in half to form two new cells.
It will add cells to the organism's body.
It will produce offspring with a mate.
- 15. Multiple Choice
Which process do single-celled organisms go through to reproduce asexually?
Mitosis
Gamete fusion
Meiosis
Sexual reproduction
- 16. Multiple Choice
Which sequence best describes asexual reproduction?
1 parent cell → 2 genetically identical offspring cells
2 parent cells → 1 offspring cell with a combination of genes from its parents
1 parent cell → 4 genetically different offspring cells
2 parent cells → 4 genetically identical offspring cells
- 17. Multiple Choice
Which process is NOT involved when a multicellular organism reproduces sexually?
Meiosis
Fusion of gametes
Mitosis
Formation of gametes
- 18. Multiple Choice
Which group of sentences describe how meiosis differs from mitosis?
Meiosis produces either male or female gametes. Meiosis produces cells with half the chromosomes of the parent cell.
Meiosis produces cells with half the chromosomes of the parent cell. Meiosis produces cells that are genetically identical to the parent cell.
Meiosis produces cells that are genetically identical to the parent cell. Meiosis produces cells with double the number of chromosomes of the parent cell.
Meiosis produces cells with double the number of chromosomes of the parent cell. Meiosis produces either male or female gametes.
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