Biology, Unit 2 Test

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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


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