Membranes and Transport

Which statement below is true about Structure E 

• Hydrophobic tails and Hydrophilic heads
• Hydorphobic heads and Hydrophilic tails
• Glycolipids
• Receptor Protiens

Which of the following is not an example of pasive transport?

• simple diffusion
• facilitated diffusion
• endcocytosis
• osmosis

An animal cell that is surrounded by fresh water will burst because the osmotic pressure causes

• Water to move out of the cell
• Water to move into the cell
• Solutes to move out of the cell
• Solutes to move into the cell

Many marine invertebrates have body surfaces that are permeable to water but not to salt. Osmosis can change the pressure of their body fluids. Fortunately, the ocean is very stable in its salt content. What would happen if a jellyfish were placed in a very low-salt environment such as an estuary?

• It would absorb a higher salt content
• It would gain nutrients from the environment
• It would gain water from the environment
• It would loose proteins into the water

Item C shows a plant cell that is experiencing

• Plasmolysis
• Turgor Pressure
• Cytolysis
• Isotonic

Identify structure A. 

• transport protein
• phospholipid
• glycolipid
• Carbohydrate Chain

Identify structure h

• transport protein
• hydrophobic head
• cholesterol
• fluid mosaic model

Which item below is NOT shown in the image above

• phospholipid
• integral protien
• channel or transport protien
• endocytosis

The cell membrane regulates the materials that enter and leave the cell. This is important for,

• Providing support for the cell
• Reducing the amount of energy the cell produces
• Preventing waste materials from leaving the cell
• Maintaining homeostasis within the cell

Some peeled pieces of apple were placed in pure distilled water and some in very salty water. The cells in the apple pieces will 

• loose water in both solutions
• gain water in the distilled water and lose water in the salty water
• gain water in both solutions
• lose water in the distilled water and gain water in the salty water