Cell - Fundamental Unit of Life Quiz
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Cells need to bring in molecules to carry out cellular processes. Often, this requires moving the molecules across the cell membrane against the concentration gradient. How do these molecules get into the cell?
A. passive transport by diffusion
B. active transport using ATP
C. passive transport by osmosis
D. osmosis
network of proteins found within the cytoplasm for support and structure in cell
A. Cytoskeleton
B. Mitochondria
C. Cilia
D. Ribosome
Transports materials throughout the cell. Acts as an assembly line for proteins.
A. endoplasmic reticulum
B. vacuole
C. nucleus
D. ribosome
A person with swollen gums rinses his mouth with warm salt water, and the swelling decreases. Which of the following has occurred?
A. The swollen gums have absorbed the saltwater solution.
B. The saltwater solution lowers the temperature of the water in the gums.
C. The salt in the solution has moved against the concentration gradient.
D. The water in the gums has moved out due to the high concentration of salt in the solution.
Nemo and other ocean dwelling fish cannot survive in freshwater because……
A. freshwater is hypertonic to Nemo’s cells and will result in water leaving them causing the cells to shrink
B. freshwater is hypotonic to Nemo’s cells and will result in water leaving them causing the cells to shrink
C. freshwater is hypertonic to Nemo’s cells and will result in water entering them causing the cells to swell and burst
D. freshwater is hypotonic to Nemo’s cells and will result in water enter them causing the cells to swell and burst
The cellular process in which materials are moved across a membrane from an area of low concentration to an area of high concentration is called
A. Osmosis
B. Simple Diffusion
C. Active Transport
D. Passive Transport
What form are chromosomes in during most of the life of the cell?
A. DNA
B. Chromatin
C. Mitosis
D. Nucleus
Selectively permeable barrier that controls what enters and leaves the cell.
A. cell membrane
B. cell wall
C. cytoskeleton
D. rough ER
What only allows certain molecules to enter or leave the cell, and separates the internal metabolic reactions from the external environment?
A. Plasma Membrane
B. Nucleus
C. Mitochondria
D. Ribosomes
clear gel-like fluid in cells that holds the organelles
A. Cytoplasm
B. Microtubules
C. Centrosome
D. Vacuole
Describes the arrangement of the cell membrane as bendable and made of many parts.
A. The Fluid Mosaic Model
B. The Major Mobility Model
C. The Crazy Cell Model
D. The Maze Model
chlorophyll containing organelle in plants that uses light energy to help create glucose in a process called photosynthesis
A. mitochondria
B. chloroplast
C. vacuole
D. lysosome
Which activity can occur without the use of energy?
A. contraction of muscle tissue
B. protein synthesis in a cell
C. active transport of minerals
D. movement of water across a membrane
A student noticed that placing wilted lettuce in a bowl of cool water caused the lettuce to become more crisp and firm. What is the best explanation for his observation?
A. Water moved into the lettuce cells by active transport.
B. Water moved into the lettuce cells by osmosis.
C. Salt moved into the lettuce cells by diffusion.
D. Water moved out of the lettuce cells by osmosis.
In passive transport, the concentration gradient goes from..
A. Low to low
B. High to low
C. Low to high
D. High to high