Biology, Unit 2 Test
Where do the products that are being made for secretion from the cell become modified and packaged?
Golgi apparatus
Where do the vesicles that are being made for secretion from the cell become modified and packaged?
Golgi apparatus
Without receptor proteins, a cell would not be able to
bind to signal proteins from other parts of the body.
Mitochondria are found in
both plant cells and animal cells.
Osmosis includes ________.
both the diffusion of water and a semi-permeable membrane
If a cell membrane is pierced with a very fine needle, the cell will
seal itself.
The first person to reportedly see living, moving cells using a microscope was
Anton van Leeuwenhoek.
Name two energy-converting organelles.
Chloroplast and Mitochondria
Organelles composed of a system of membranous canals, tubes, and sacs that transport molecules inside the cytoplasm are
Endoplasmic reticula.
Which of the following statements describes the function of a chloroplast?
It converts light energy into chemical energy.
When a potted house plant is wilting, the addition of water quickly changes the look of the plant. This can be accounted for by which of the following statements:
The water creates a hypotonic environment causing the cells to gain water.
In which way are vesicles different from vacuoles?
They are smaller.
The concentration of calcium in a cell is 3%. The concentration of calcium in the surrounding fluid is 1%. How could the cell obtain more calcium?
active transport
Which of these words does not belong with the rest as it relates to movement across a membrane
active transport
The method of movement that requires the expenditure of ATP molecules is
active transport.
The sodium-potassium pump is an example of
active transport.
Which are examples of prokaryotes?
bacteria
The first cell seen by Robert Hooke using a microscope was a
cork cell.
Simple diffusion across a plasma membrane is called passive transport because it ______.
does not require energy from the cell
Simple diffusion across a plasma membrane is called passive transport because it ________.
does not require energy from the cell
Which of the following would be best to view all the organelles of a cell with?
electron microscope
If a plasma membrane were compared to a sandwich, __________ would be considered the filling.
fatty acid tails
Which of the following is NOT a mechanism used to move materials in and out of the cell?
feedback inhibition
Without tight junctions in certain tissues
fluids may leak past the barrier the junction would create.
Cells will lose water and shrivel in a _______ environment.
hypertonic
In bacterial cells and plant cells, cell walls function in
maintaining cell shape.
What organelle is required for producing ATP for cellular work?
mitochondria
Which of the following is a CORRECT matching of an organelle and its function?
mitochondrion - transfer of energy to ATP molecules
Which of the following organelles would NOT be seen in a prokaryotic cell?
nucleus
What must materials pass through to enter or leave a cell?
plasma membrane
Most of the functions of plasma membranes are carried out by
proteins.
In an attempt to visualize the fluid mosaic model of a membrane, we could describe the __________ as floating in a sea of __________.
proteins; lipid
Which of the following organelles is not surrounded by a membrane?
ribosomes
Which of the following are found in both plant and animal cells?
ribosomes, mitochondria, plasma membranes
Which of the following is the correct sequence for a protein that is produced and secreted from the cell?
rough endoplasmic reticulum - Golgi apparatus - plasma membrane
Which of the following is an INCORRECT match?
smooth endoplasmic reticulum - storage of water
What prevents a plant cell from bursting in a hypotonic solution?
the cell wall
Eukaryotic cells move their organelles by using
the cytoskeleton.
What role do ribosomes play in all cells?
Ribosomes make protein which cells need to do some of its fun
What function does the nucleolus have?
codes for the synthesis of ribosomal RNA
