Biology Cell Membrane Test Feburary 2014

Front 1

Proteins, organelles, cells, organisms

Back 1

This list describes the organization within multicellular organisms from least complex to most complex

Front 2

Cyanide is a poison that prevents the cell from using oxygen. Which organelle is directly affected?

Back 2

Mitochondria

Front 3

What plant organelle is used to make sugars?

Back 3

Chloroplast

Front 4

What cell structure produces proteins for export?

Back 4

Rough endoplasmic reticulum

Front 5

What is the fundamental (basic) unit of life?

Back 5

Cell

Front 6

What organelle is found in plant cells but not in animal cells?

Back 6

Cell Wall

Front 7

What plant organelle stores sugars and water?

Back 7

vacuole

Front 8

What is the major function of the cell membrane?

Back 8

To control what substances move in and out

Front 9

The process of maintaining a constant internal environment even though external conditions are changing is called what?

Back 9

homeostasis

Front 10

What structure in the cell contains most of the cell’s genetic information?

Back 10

Nucleus

Front 11

Diffusion is described as....

Back 11

The movement of molecules from an area of high concentration to an area of low concentration.

Front 12

A student examines a cell under the microscope and observes that the cell contains many mitochondria. This is evidence that the cell uses lots of what?

Back 12

Energy

Front 13

Molecules can pass through the cell membrane. What is one way that does not require energy?

Back 13

osmosis

Front 14

Name a structure that is not present in animal cells.

Back 14

Chloroplast

Front 15

What does a Euglena (a single celled organism) use to move?

Back 15

A flagellum

Front 16

Paramecium and Euglena are both eukaryotes because they both have what?

Back 16

a nucleus

Front 17

The ability of the human body to regulate the level of blood glucose is an example of what?

Back 17

Homeostasis

Front 18

What part of the cell is the site of many of the reactions of metabolism?

Back 18

Cytoplasm

Front 19

If cells are placed in a stronger sugar solution than what is in the cell, water will________.

Back 19

Move out of the cell into the environment

Front 20

When the concentration of molecules on both sides of a membrane is the same, the molecules will do what?

Back 20

move across the membrane in both directions

Front 21

In activity 8 which of the following substance was not able to pass through the membrane, because it was too large?

Back 21

starch

Front 22

Large molecules can’t diffuse through the membrane, but are still able to cross the membrane. What structure on the membrane allows for these large molecules to pass through?

Back 22

transport proteins

Front 23

Fill in the blanks...
The membrane is made up of a bilayer of phospholipids. The heads of the bilayer are_________ to water and make up the outside of the membrane, while the tails are ____________ by water and make up the inside of the bilayer.

Back 23

attracted, repelled

Front 24

If a cell is placed in a hypotonic solution, lower concentration of dissolved substances outside the cell, what will happen to the movement of water?

Back 24

Water will move into the cell

Front 25

What organelle is responsible for destroying bacteria and waste materials in animal cells?

Back 25

lysosome

Front 26

What organelle is like the post office, packaging and skipping out cell products?

Back 26

golgi

Front 27

What scientist was the first to discover and name cells?

Back 27

Hooke

Front 28

What is the organelle that stores water and waste in plant cells, and only water in animal cells?

Back 28

Vacuoles

Front 29

Name two cell organelles or structures that all cells have in common and describe their function.

Back 29

Cell membrane: it controls what goes into and out of the cell.

Ribosomes: they make proteins

Front 30

You are observing a cell and notice the cell’s DNA is not bound by a membrane. Using this information alone, what conclusion can you make about this cell?

Back 30

It is a prokaryote

Front 31

Name a organisms that is a prokaryote?

Back 31

Bacteria

Front 32

What happens once a dynamic equilibrium is reached:

Back 32

Concentrations of sugar/salt/solute are equal inside and outside of the cell

Front 33

In Activity 8, we observed that starch molecules were not able to move through the dialysis tubing, while the iodine molecules were able to move across the membrane. This is because the membrane is:

Back 33

Selectively permeable

Front 34

In Activity 8, you had three cups that each contained a different concentration of sucrose. Cell models containing identical concentrations of sucrose were placed in each of the three cups. Which answer choice below is the manipulated or independent variable?

Back 34

The concentration of sucrose in the cup surrounding the cell