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Which of the following is a major principle upon which cell theory is based

All organisms are made of cells.

Which organelle is the storehouse for most of a cell's genetic information?

nucleus

Which phrase best describes rough ER?

studded with ribosomes

Which organelles supply energy to the cell?

mitochondria

Which organelles contain enzymes that break down old cell parts?

lysosomes

Which organelles are unique to plant cells

chloroplasts

Which process occurs inside the chloroplasts?

photosynthesis

A protein that detects a signal molecule and performs an action in response is called a

receptor

A solution that is hypotonic to a cell has

fewer solutes than the cell.

Transport proteins play a role in both

passive and active transport.

Which process requires no energy from the cell?

facilitated diffusion

Which organelles are involved in the process called endocytosis?

vesicles

Which process is occurring when a vesicle fuses with the cell membrane and releases its contents outside the cell?

exocytosis

Cell theory establishes which of the following conclusions about cells?

all cells are produced by other living cells.

How is the cell shown in Figure 3.1 different from a prokaryotic cell?

it has a nucleus.

Which statement is true about a nucleus?

It is surrounded by a double membrane.

Which organelles are present both inside the nucleolus and on the surface of the ER?

ribosomes

Which phrase describes the function of the mitochondria?

supplies energy to the cell

Which organelles are involved in defending a cell against viruses?

lysosomes

Which features are found in plant cells but not in animal cells?

cell walls and chloroplasts

Mitochondria and chloroplasts are both sites of

energy conversion.

Which type of receptor binds to ligands that cannot enter the cell?

membrane

Water enters a cell when the solution surrounding the cell is

hypotonic to the cell.

Which of the following phrases best describes active transport

moves substance against concentration gradient

Which phrase best describes the process of facilitated diffusion?

requires no energy from the cell

Which organelles are involved in the process called endocytosis?

lysosomes and vesicles

Which sentence best describes exocytosis?

A vesicle fuses to the cell membrane and its contents leave the cell.

Which of the following does not require energy?

diffusion

Ions move through ion channels by

passive transport.

The diffusion of water into or out of a cell is called

osmosis.

Osmosis is a type of

passive transport.

How does water pass through the cell membrane?

through channel proteins just for water

Which of the following statements about an isotonic solution and a cell is correct?

The solution has the same solute concentration that the cytoplasm does.

Both active transport and facilitated diffusion involve

carrier proteins.

The sodium-potassium pump usually pumps

potassium ions into the cell.

Proteins and polysaccharides that are too large to move into a cell through diffusion or active transport move in by

endocytosis

Removing materials from a cell in vesicles is called

exocytosis.

Sugar molecules cross the cell membrane by

facilitated diffusion.

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