contains nearly all the cell's DNA and, with it, the coded instructions for making proteins

store materials like water, salts, proteins, and carbohydrates.

break down large molecules into smaller ones that

can be used by the cell. They are also involved in breaking down organelles that have outlived their usefulness.

some are released from the cell, some are used in membranes and other specialized locations within the cell.

modifies, 

they grow, respond to the environment, transform energy, and reproduce.

they become specialized for particular tasks and communicate with one another to maintain homeostasis .

In many cells, the structure that controls the cell's activities is the

nucleus.

Despite differences in size and shape, at some point all cells have DNA and a

What distinguishes a eukaryotic cell from a prokaryotic cell is the presence of

Create a table that summarizes the contributions made to the cell theory by Robert Hooke, Matthias Schleiden, Theodor Schwann, and Rudolf Virchow.

If you wanted to observe a living organism- an amoeba, for example-

which type of microscope would you use?

How are prokaryotic and eukaryotic cells alike? How do they differ?

For each of the following, indicate if the structure is found only in eukaryotes, or if it is found in euka ryotes and prokaryotes:

cell membrane, mitochondria, ribosome, Golgi apparatus, nucleus, cytoplasm, and DNA .

The movement of water molecules across a selectively permeable membrane is known as

In eukaryotic cells, chromosomes carrying genetic information are

found in the

The organelles that break down lipids, carbohydrates, and proteins into small molecules that can be used by the cell are called

A substance that moves by passive transport tends to move

What is the relationship between diffusion and osmosis? By definition, what's the only substance that undergoes osmosis?

Diffusion applies to everything but water.

Osmosis is the passive diffusion of only water.

What is the difference between passive transport and active transport?

Which of the following is true of ALL singlecelled organisms?

A. They are all prokaryotes.

B.They all have a nucleus.

C. They all reproduce.

D They are all bacteria.

c.They all reproduce.

A tissue is composed of a group of

a. similar cells c. organ systems.

b. related organelles. d. related organs.

Explain the relationship among cell specialization, multicellular organisms, and homeostasis.

Describe the relationship among cells, tissues, organs, and organ systems

.

Animal cells have all of the following EXCEPT

A. mitochondria.

B. chloroplasts.

C.  nucleus.

D. a cell membrane.

The nucleus includes all of the following structures

EXCEPT

A  DNA 

B a nucleolus

C. a nuclear envelope.

D cytoplasm.

The human brain is an example of a(n)

A. organ system

B.Organ

C tissue

D cell.

Which cell structures are sometimes found attached to the endoplasmic reticulum? 

A. chloroplast

B. nuclei

C, Mitochondria

D. ribosomes

Which process always involves the movement of materials from inside the cell to outside the

cell?

A phagocytosis

B exocytosis

C endocytosis

D osmOSIs

Which of the following is an example of active transport?

A facilitated diffusion

B osmosis

C diffusion

D endocytosis

specialized structure that performs important

cellular functions within a eukaryotic cell

cell organelle that stores materials such as water,

salts, proteins, and carbohydrates

cell organelle that breaks down lipids, carbohydrates,

and proteins into small molecules that can used by

the rest of the cell

network of protein filaments in a eukaryotic

cell that gives the cell its shape and internal organization

and is involved in movement

structure in an animal cell that helps to organize

cell division

cell organelle consisting of RNA and protein

found throughout the cytoplasm in a cell ; the site of protein

synthesis

internal membrane system found

in eukaryotic cells; place where lipid components of the cell

membrane are assembled

organelle in cells that modifies, sorts, and

packages proteins and other materials from the endoplasmic

reticulum for storage in the cell or release outside the

cell

organelle found in cells of plants and some other organisms that captures the energy from sunlight and converts it into chemical energy

cell organelle that converts the chemical energy stored in food into compounds that are more convenient for the cell to use

strong, supporting layer around the cell membrane in some cells

flexible double- layered sheet that makes up the cell membrane and forms a barrier between the cell and its surroundings

property of biological membranes that allows some substances to pass across it while others cannot; also called semipermeable membrane

relatively constant internal physical and chemical conditions that organisms maintain

group of similar cells that perform a particular function

group of tissues that work together to perform closely related functions

group of organs that work together to perform a specific function

pressure that must be applied to prevent osmotic movement across a selectively permeable membrane