Science Ch3

Question 0

There are two main ways substances can cross a cell membrane: ______ _______ crosses the membrane without the cell using energy.

In ______ _______, the cell must use energy to move a substance across the membrane.

Answer 0

Passive transport and Active transport

Question 1

What are the two types of “passive” transport?

Answer 1

Diffusion and Osmosis

Question 2

________ is the movement of molecules from an area of higher concentration to an area of lower concentration?

Answer 2

Diffusion

Question 3

________ is the diffusion of water through a selectively permeable membrane.

Answer 3

Osmosis

Question 4

Name the three types of cell boundaries

_____ _____ = All organisms

_____ _____ = plants, algae (NOT humans/animals)

__________ = bacteria

Answer 4

Cell membrane
Cell wall
Capsule

Question 5

In a compound light microscope, total magnification is equal to what?

Answer 5

the power of the objective lens times the power of the eyepiece lens

Question 6

All cells are surrounded by a cell membrane, which is described by what model?

Answer 6

Fluid Mosaic Model

cell membrane consists of a lipid bilayer of phospholipids (“fluid”) with proteins in shapes and pattern of a “mosaic”

Question 7

The cell’s “powerhouses” that transform food into energy

Answer 7

Mitochondria

Question 8

the cell’s “delivery system”. This network of membrane canals is like a transport system

Answer 8

Endoplasmic Reticulum (ER)

Question 9

This organelle makes proteins.

It does NOT have a membrane so it can appear in both Eukaryotes and Prokaryotes cells

Answer 9

Ribosomes

Question 10

This organelle processes chemicals and substances the cell makes and tries to use them

Answer 10

Golgi Apparatus

Question 11

A plant cell’s “storage container” that stores food, water, wastes, or other materials

Answer 11

Vacuoles

Question 12

the cell’s “garbage disposal” that disposes of substances like foreign materials or stuff the cell no longer needs

Answer 12

Lysosomes

Question 13

These are found in plant cells but not human or animal cells. They use the sun’s rays to make sugar through photosynthesis.

Answer 13

Chloroplasts

Question 14

These organelles are extensions of the cell membrane and are used for movement

Answer 14

Cilia and Flagella

Question 15

These cells have a true nucleus; their genetic material is surrounded by a membrane.

Answer 15

Eukaryotic

Question 16

These cell types include protozoans, algae, fungi, plants, animals, and humans. (NOT bacteria)

Answer 16

Eukaryotes

Question 17

These cell types do NOT have a membrane around their genetic material. They also do NOT have organelles that are surrounded by a membrane.

Answer 17

Prokaryotic

Question 18

Prokaryotic cell types are mostly this thoe of organism?

Answer 18

Bacteria

Question 19

________ ________ believes cells are complex and that they cant be made more simple. (You can’t reduce their complexity). Its a problem for evolutionists.

Answer 19

Irreducible complexity

Question 20

Is Diffusion is a type of passive or active transport?

Answer 20

Passive

Question 21

Cell membranes are composed primarily of what two types of molecules?

Answer 21

Lipids and proteins

Question 22

In Osmosis (diffusion) water will move through the membrane from the area of ______ concentration to lower concentration.

Answer 22

Higher to lower

Question 23

In Reverse Osmosis, water will move through the membrane from the area of ______ concentration to higher concentration.

Answer 23

Lower to higher. (impurities left behind, and the water is purified)

Question 24

Does osmosis require a cell to use energy? Explain.

Answer 24

NO. It is a form of passive transport (cell uses NO energy)

Question 25

Which organelle helps keep some unicellular organisms from bursting as they absorb water by osmosis? a. central vacuole b. mitochondrion c. lysosome d. contractile vacuole

Answer 25

a. central vacuole

Question 26

``` “powerhouse” of the cell stores materials passageway/transport for materials “garbage disposal” helps make sugar (Photosynthesis) Creates movement helps make proteins ```

Answer 26

100%. Good job!

Question 27

Give a real world example of diffusion

Answer 27

A fart Perfume spray Melting sugar

Question 28

List three cellular structures that are found in plant cells but not animal cells.

Answer 28

Cell wall Chloroplasts Vacuoles

Question 29

Do the cells of a wilted plant have turgor pressure that is too high or too low? Explain.

Answer 29

Too low (wilted has no water)

Question 30

Which of the following does not require a cell to use energy? a. moving a substance from an area of low concentration to an area of high concentration of that substance b. moving a substance by active transport c. moving water into the cell by osmosis d. moving through the environment by means of flagella

Answer 30

C.

Question 31

``` A cell needs to store some food molecules. What organelle will the cell most likely use? A. chloroplasts B. lysosomes C. ribosomes D. vacuoles ```

Answer 31

D. vacuoles