Water, Biomolecules, Cell membrane and Transport

How does the cell membrane maintain homeostasis for the cell?

• It contains the DNA which gives instructions to the cell.

• The cell membrane produces ATP energy for the cell.

• The cell membrane determines what can enter and exit the cell.

• The cell membrane provides structure to cells.

Tags

NGSS.MS-LS1-2

What clues indicate that the image is showing an active transport process?

• All other answers

• The molecules are being pushed against the concentration gradient.

• Energy usage is being shown with an explosion symbol.

• ATP is present and being used.

What would happen to a human cell if it was put in hypotonic conditions?

• It would shrivel up

• Nothing would happen because the concentrations are balanced.

• It would expand and could possibly burst.

• The cell would exhibit turgor pressure with its neighboring cells.

Which situation describes Endocytosis?

• Cell membrane wraps around larger nutrients to pull them into the cell forming a vesicle.

• A protein carrier allows larger molecules to flow through the membrane

• Water follows a concentration gradient through a membrane.

• A vesicle fuses with the membrane, releasing waste out of the cell.

Tags

NGSS.HS-LS2-3

Which situation describes Osmosis?

• A protein in the membrane uses ATP energy to actively push small molecules against the gradient.

• A protein carrier or channel allows larger molecules to flow through the membrane

• Water follows a concentration gradient through a membrane.

• A vesicle fuses with the membrane, releasing waste out of the cell.

Which situation describes exocytosis?

• A protein in the membrane uses ATP energy to actively push small molecules against the gradient.

• A protein carrier or channel allows larger molecules to flow through the membrane

• Water follows a concentration gradient through a membrane.

• A vesicle fuses with the membrane, releasing waste out of the cell.

Which situation describes facilitated diffusion?

• A protein in the membrane uses ATP energy to actively push small molecules against the gradient.

• A protein carrier or channel allows larger molecules to flow through the membrane

• Water follows a concentration gradient through a membrane.

• A vesicle fuses with the membrane, releasing waste out of the cell.

A concentration gradient allows molecules to flow _______________.

• From high concentration to low.

• From low concentration to high.

• through a solid medium using energy.

• through a membrane no matter the size of the molecule.

What is the function of Carbohydrates?

• Store and transmit genetic information.

• Catalyze chemical reaction within cells.

• Store long-term energy for cells.

• Store short-term energy for cells.

What is the function of Lipids?

• Store and transmit genetic information.

• Catalyze chemical reaction within cells.

• Store long-term energy for cells.

• Store short-term energy for cells.