GJHS FL BIO CH 7 TEST REVIEW

This is a membrane-bound vesicle for the temporary storage of materials.

_______________ gives leaves and stems their green color.

_______ uses transport proteins to move ions across the plasma membrane w/ no added energy.

Cells have energy generators called _____ which convert fuel (mainly sugars) into usable energy

T or F: In biology, ER stand for endocytosis reticulum.

In 1665, what English scientist discovered cells by looking at a piece of cork in a microscope?

__________ (type of optical) microscope uses visible light and lenses to magnify an object.

The sodium-potassium ATPase pump is a(n) _______________ pump found in the plasma membrane.

What does smooth ER in the liver do?

Channel proteins change shape to help move the particle through the membrane.

T or F: The Golgi apparatus modifies and packages proteins for distribution outside of the cell

The environment inside the plasma membrane is a semifluid material called ________.

T or F: Concentration is a measure of the amount of solute dissolved in a solvent.

In 1830-1855, what important organelle (housing our DNA) was discovered?

The process of maintaining balance in an organism’s internal environment is called

Which scientist studied plant tissues and concluded that all plants are composed of cells?

Substances diffuse from areas of high concentration to low concentration.

_______________ are organelles that capture light energy and convert it to chemical energy.

Which of the following is NOT a factor that affects the rate of diffusion?

This has two layers of phospholipids arranged tail-to-tail so the membrane can be in water.

__________ is an double-membrane organelle with thylakoids containing chlorophyll

Microfilaments and microtubules rapidly assemble and disassemble and slide past one another.

____________ is a highly folded membrane that is the site of protein synthesis.

Structures called ___ and flagella that project outside the plasma membrane help cell movement.

Microtubules are organelles made of centrioles that function in cell division.

When diffusion occurs&there is continuous movemt but no overall change in dynamic equilibrium.

Ribosomes help manufacture proteins.

What do all cells have that is a boundary that helps control what enters and leaves a cell?

This helps to prevent the fatty-acid tails of the phospholipid bilayer from sticking together

The cytoskeleton is composed of

The polar heads are closest to the water because the polar head is attracted to water.

________________ move needed substances or waste materials through the plasma membrane.

In a ________ solution, water enters a cell by osmosis, causing the cell to swell & even burst.

What gives plant cell walls their inflexible characteristics?

_________ are known as the clean-up crews of the cell because they digest worn-out organelles.