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Questions and Answers
Which type of substances can enter the cell membrane without the need for protein helpers?
Which type of substances can enter the cell membrane without the need for protein helpers?
- Polar, hydrophilic molecules
- Nonpolar, hydrophobic molecules (correct)
- Glucose
- Ions
What is the main factor that affects the rate of diffusion in passive transport processes?
What is the main factor that affects the rate of diffusion in passive transport processes?
- Availability of carrier proteins
- Steepness of the concentration gradient (correct)
- Presence of aquaporins
- Opening of gated channels
In the context of active transport, what is the role of ATP?
In the context of active transport, what is the role of ATP?
- To open aquaporins
- To provide energy for pumping molecules against their concentration gradient (correct)
- To facilitate diffusion of ions
- To maintain turgor pressure in cells
Which process involves the cell membrane engulfing particles or fluids from the external environment?
Which process involves the cell membrane engulfing particles or fluids from the external environment?
What is the color indicator used in the Dialysis Bag with Starch and Iodine Lab Demo?
What is the color indicator used in the Dialysis Bag with Starch and Iodine Lab Demo?
How do aquaporins facilitate the movement of water across the cell membrane?
How do aquaporins facilitate the movement of water across the cell membrane?
What happens to animal cells in a hypertonic solution?
What happens to animal cells in a hypertonic solution?
What type of substances typically require protein helpers to cross the cell membrane?
What type of substances typically require protein helpers to cross the cell membrane?
What is the purpose of the Sodium/Potassium Pump in cells?
What is the purpose of the Sodium/Potassium Pump in cells?
What is affected by whether gated channels are open or closed in facilitated diffusion?
What is affected by whether gated channels are open or closed in facilitated diffusion?
What type of molecules make up the tails of the phospholipid bilayer?
What type of molecules make up the tails of the phospholipid bilayer?
What role do aquaporins play in facilitating the movement of water through the cell membrane?
What role do aquaporins play in facilitating the movement of water through the cell membrane?
What is the effect of hypotonic solution on plant cells?
What is the effect of hypotonic solution on plant cells?
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