Homeostasis and Transport Practice Quiz 2

Use the diagram below to answer the question. The functions of which cell structure are described in this list?

• Cell membrane

• Nucleus

• Mitochondria

• Ribosome

Tags

NGSS.MS-LS1-2

Which of the following is most involved in providing structure for a plasma membrane?

• the number of protein channels in the membrane

• the types of carbohydrates attached to proteins on the surface

• the types of proteins that are attached to the surface of the membrane

• the arrangement of the hydrophobic and hydrophilic ends of the phospholipids

Use the diagram below to answer the question. Which component of this membrane contains a hydrophobic region and acts as the primary barrier to most foreign substances?

• protein

• cholesterol

• carbohydrate chain

• phospholipid bilayer

The indicated protein is part of a cell membrane. What is the most likely purpose of this protein?

• It allows passage of particles into and out of the cell.

• It manufactures phospholipids to repair membrane damage.

• It releases stored chemical energy in membrane carbohydrates.

• It attracts unbalanced electrical charges in the cell’s environment.

Which of the following statements is false regarding proteins in the cell membrane?

• They aide in the transport of materials into and out of the cell.

• They synthesize polypeptides.

• They assist in cellular communication.

• They can combine with carbohydrates to form glycoproteins.

How do mitochondria facilitate the movement of some materials between cells?

• They supply the energy needed for moving molecules through membranes.

• They manufacture the proteins needed to form channels in cell membranes.

• They supply digestive substances that break large molecules into smaller units.

Which transport mechanisms require the formation of a vesicle to transport material into or out of a cell?

• diffusion and osmosis

• exocytosis and endocytosis

• exocytosis and calcium pumps

• diffusion and facilitated diffusion

The relative concentration of solute inside and outside a cell can cause water molecules to move across the membrane. Which phrase would be an alternate title to the diagram?

• Exocytosis in a Cell

• Active Transport in a Cell

• Osmosis Across a Membrane

• Facilitated Diffusion Across a Membrane

All living organisms must maintain homeostasis in order to survive. Which statement best describes one way humans maintain homeostasis?

• Temperature is regulated by giving off carbon dioxide.

• Water content is regulated by giving off carbon dioxide.

• Temperature is regulated by sweating.

• Water content is regulated by sweating.

Tags

NGSS.HS-LS1-3

The shivering mechanism in bumblebees often serves the same purpose as it does in mammals. During which condition will the action of shivering most help a bumblebee to maintain homeostasis?

• decrease in available oxygen

• low environmental temperature

• uncontrolled rise in core temperature

• depletion of oxygen in muscle tissues

Tags

NGSS.HS-LS1-3