Have an account?
Skip to Content
Build your own quiz
Suggestions for you
25 questions
Show Answers
See Preview
- 1. Multiple Choice
Which of the following statements is part of the cell theory?
Cells are composed mostly of empty space.
Cells are generally large enough for the unaided eye to see.
All cells are produced from existing cells.
Only animals are made up of cells.
- 2. Multiple Choice
The cells of all organisms contain DNA. In cells of which of the following groups is the cellular DNA enclosed in a nucleus?
bacteria
eukaryotes
prokaryotes
viruses
- 3. Multiple Choice
Microscopes can be used to explore cells. Which of the following types of microscopes is used to produce a three-dimensional image of the surface of a cell?
simple light microscope
compound light microscope
scanning electron microscope
transmission electron microscope
- 4. Multiple Choice
A number of scientists made contributions to cell theory. Which scientist was the first to use a light microscope to observe cells in a slice of cork?
Anton van Leeuwenhoek
Matthias Schleiden
Robert Hooke
Theodor Schwann
- 5. Multiple Choice
Lysosomes are organelles that contain enzymes. Which of the following is a function of lysosomes?
Lysosomes build lipids, carbohydrates, and proteins.
Lysosomes package lipids, carbohydrates, and proteins.
Lysosomes break down lipids, carbohydrates, and proteins.
Lysosomes store lipids, carbohydrates, and proteins.
- 6. Multiple Choice
Which of the following structures are typically present in both plant and animal cells?
cell walls
centrioles
chloroplasts
mitochondria
- 7. Multiple Choice
All cells contain cell membranes. Which of the following describes the composition of cell membranes?
Cell membranes are composed of carbohydrate chains, which allow all materials to enter and leave the cell.
Cell membranes are composed of cellulose, which provide rigidity for the cell.
Cell membranes are composed of cytoplasm, which allows proteins to be excreted by the cell.
Cell membranes are composed of lipid molecules, which provide a flexible structure.
- 8. Multiple Choice
Which organelles allow plants to support heavy structures such as leaves and flowers?
the cell membranes because they regulate what enters and leaves the cells
the chloroplasts because they convert sunlight into chemical energy
the Golgi apparatus because it packages proteins for storage in the cells
the vacuoles because they are filled with fluid, which provide rigidity
- 9. Multiple Choice
The model shows a substance crossing a cell membrane.
Which of the following describes the process?
The model shows the process of active transport because the solute particles are moving from an area of low concentration to an area of high concentration.
The model shows the process of bulk transport because the solute particles are moving from an area of low concentration to an area of high concentration.
The model shows the process of diffusion because solute particles are moving from an area of high concentration to an area of low concentration.
The model shows the process of osmosis because the solute particles are moving from an area of high concentration to an area of low concentration.
- 10. Multiple Choice
A cell is placed in an isotonic solution. How does the cell maintain homeostasis in this environment?
There is no movement of water molecules into or out of the cell because the concentrations of solute particles inside and outside the cell are the same.
Water will move across the cell membrane to the inside of the cell because the cell has a higher concentration of solute particles than the solution.
Water will move across the cell membrane to the outside of the cell because the solution has a higher concentration of solute particles than the cell.
Water will move across the cell membrane in both directions because the concentrations of solute particles inside and outside the cell are the same.
- 11. Multiple Choice
The illustration shows a model of the transport of solute particles from outside the cell to inside the cell.
What type of cell transport is modeled?
The model illustrates active transport because energy is required for solute particles to cross the cell membrane.
The model illustrates diffusion because solute particles are moving from an area of higher concentration to an area of lower concentration.
The model illustrates facilitated diffusion because protein channels allow solute particles to cross the cell membrane.
The model illustrates osmosis because water molecules are moving from an area of higher concentration to an area of lower concentration.
- 12. Multiple Choice
Multicellular organisms contain organ systems. Which of the following BEST describes the organs in an organ system?
The organs in an organ system are made up of similar cells.
The organs in an organ system are made up of similar tissues.
The organs in an organ system work together to perform a specific function.
The organs in an organ system work together to perform all the functions a multicellular organism needs to maintain homeostasis.
- 13. Multiple Choice
Chlamydomonas is a genus of single-celled photosynthetic algae. Which of the following is NOT a way that chlamydomonas maintains homeostasis?
The reproductive system of chlamydomonas contains specialized cells that enable the organism to reproduce both sexually and asexually.
Chlamydomonas contains a chloroplast and produces its own food via photosynthesis.
Waste products leave chlamydomonas through diffusion.
Chlamydomonas is able to grow by absorbing minerals and through photosynthesis.
- 14. Multiple Choice
Like animals, plants contain a hierarchical organization of interacting systems. Which of the following is an example of an organ in a plant?
chloroplast
leaf
seed
vascular tissue
- 15. Multiple Choice
Mature mammalian red blood cells, called erythrocytes, have no nucleus, ribosomes, or mitochondria. The cytoplasm of erythrocytes is rich in hemoglobin, the protein that carries oxygen. The large amount of hemoglobin allows the red blood cells to carry the large amount of oxygen cells need for the high rate of metabolism in mammals.
Erythrocytes have a biconcave shape, meaning they are thinner in their center than along their edges as shown in the model.
Based on the structure of erythrocytes, how do red blood cells help to maintain homeostasis in mammalian organisms?
Oxygen diffuses into and out of red blood cells to maintain homeostasis. The biconcave shape of erythrocytes provides an increased surface area on the cells for diffusion to occur.
Oxygen enters red blood cells via endocytosis and exits red blood cells via exocytosis to maintain homeostasis. The biconcave shape of erythrocytes provides an increased surface area on the cells for bulk transport to occur.
Oxygen enters and leaves red blood cells against a concentration gradient through protein pumps to maintain homeostasis. The biconcave shape of erythrocytes provides an increased surface area on the cells for active transport to occur.
Red blood cells synthesize hemoglobin to increase absorption of oxygen to maintain homeostasis. The biconcave shape of erythrocytes provides an increased surface area on the cells for protein synthesis to occur.
- 16. Multiple Choice
Scientists estimate that humans contain over 37 trillion cells. Among these cells are more than 200 different cell types that have different structures, sizes, shapes, and functions. The table shows just a few different types of cells in the human body, their functions, and their average volumes.
In terms of volume, how does the size of a red blood cell compare to the size of an enterocyte?
A red blood cell is 7% smaller than an enterocyte.
A red blood cell is 29% smaller than an enterocyte.
A red blood cell is 71% smaller than an enterocyte.
A red blood cell is 93% smaller than an enterocyte.
- 17. Multiple Choice
Despite differences in shape and size, at some point all cell have DNA and a
cell wall.
cell membrane.
mitochondrion.
nucleus.
- 18. Multiple Choice
German scientists Schleidena and Schwannn determined that the basic unit of structure and function in living things is the
atom.
molecule.
cell.
nucleus.
- 19. Multiple Choice
The portion of the cell outside the nucleus is called the
organelle.
cytoplasm.
nucleolus.
ribosome.
- 20. Multiple Choice
Proteins are assemebled on
ribosomes.
vaculoes.
lysosomes.
centrioles.
- 21. Multiple Choice
Which organelles are known as the “power plants” of the cell becuase they transfer chemical energy from food to compounds the cell can use?
mitochondria
ribosomes
lysosomes
vacuoles.
- 22. Multiple Choice
Which two organelles are involved in the movement of a cell in its environment?
microtubles and centrioles
flagella and cilila
centrioles and the cell wall
cytoskeleton and lysosomes
- 23. Multiple Choice
The relatively constant internal physical and chemical conditions that all organisms must maintain to survive is known as
osmosis.
endocytosis.
homeostasis.
exocytosis.
- 24. Multiple Choice
Solute particles move from an area of higher concentration to an area of lower concentration in a process called
osmosis.
transport.
diffusion.
equilibrium.
- 25. Multiple Choice
What type of organism consists of specialized cells?
unicellular prokaryotes
multicellular prokaryotes
unicellular eukaryotes
multicellular eukaryotes
- Answer choicesTagsAnswer choicesTags