Cell and cellular procces

State which part of a plant cell control what goes in and out of the cell?

• Cell wall

• Cell membrane

• Cytoplasm

• Vacuoles

Cell membrane it is said to be partially permeable, which means that it...

• Will let substances in the cell can be released into the environment

• Will let substances from the environment can enter the cell

• Impassable various substances

• Will let some substances through but not others

Consider some of the following molecular transfer processes.

1) osmosis

2) sodium-potassium ion pump

3) diffusion

4) endocytosis

5) exocytosis

The process of moving molecules that requires energy is . . .

• 1), 2), 3)

• 1), 3), 4)

• 3), 4), 5)

• 2), 4), 5)

The cell organelles that only plant cells have are...

• Cell wall and vacuoles

• Vacuoles and chloroplasts

• Cell wall and chloroplasts

• Chloroplasts and Cell membrane

Plants can carry out photosynthesis to make their own food. This is because in plant cells there are...

• Tiny grains

• Glycogen

• Granules

• Strach grains

Cell organelles have the following characteristics:

- oval shaped

- has two layers of membrane

- grooved inner membrane to expand the surface

The function of this organ is...

• Chloroplasts are the site of the light reactions of photosynthesis

• The endoplasmic reticulum is the link between the cell nucleus and the cytoplasm

• Ribosomes are the building blocks of ATP

• Mitochondria is the site of energy production

The figure shows the stages of active transport that occur in a cell. The sequence of stages according to the right picture is...

• 1. The glucose molecule enters the transport protein

  2. The change of shape of the transport protein pushes the glucose molecule into the cell

  3. The transport protein changes shape.

• 1. The glucose molecule enters the transport protein

  2. The transport protein changes shape.

  3. The change of shape of the transport protein pushes the glucose molecule into the cell

• 1. The transport protein changes shape.

  2. The change of shape of the transport protein pushes the glucose molecule into the cell

  3. The glucose molecule enters the transport protein

• 1.The change of shape of the transport protein pushes the glucose molecule into the cell

  2. The glucose molecule enters the transport protein

  3. The transport protein changes shape

The net movement of molecules and ions from a region of their higher concentration to a region of their lower concentration down a concentration gradient, as a results of their random movement is a.....

• Osmosis

• Active transport

• Diffusion

• Passive transport

The event that shows the state of the cell in number 3 is...

• cells undergo crenation

• cells undergo plasmolysis

• Cells undergo dyalisis

• Normal cells

The following are cell organelles and their proper functions are..

• Cytoplasm: places where metabolic reactions occur

• Lisosom: places where protein are made

• Nuclear membrane: places where the genetic information is stored

• Cell wall: control what goes in and out of it