Cell membrane

What term describes the relatively constant internal conditions of an organism or maintaining balance?

• specialization
• organ system
• unicellularity
• homeostasis

Which of the following is a function of the cell membrane?

• regulates the movement of materials in and out of a cell
• breaks down lipids, proteins, and carbohydrates from food
• keeps the cell wall in place
• stores food and water

Selective permeability means ______.

• everything passes through the cell membrane
• nothing passes through the cell membrane
• some things pass through the membrane and others do not
• all of these answers

What is the relationship between homeostasis and cell transport?

• They are not related.
• Cell transport is a way to maintain homeostasis in a cell.
• Homeostasis is a type of cell transport.

It doesn't matter if you are a single-celled organism or a multi-celled organism, you must maintain homeostasis or you will die.

• True
• False

A cell membrane is made up mostly of ______. (This makes up most of the membrane.)

• cholesterol
• protein
• phospholipids

Cell membranes are made up of ____

• phospholipids
• proteins
• cholesterol
• all of the above
• none of the above

Glycoproteins and glycolipids are used to identify the cell as belonging to the organism.

• True
• False

Cell signaling is done by

• cholesterol
• phospholipids
• glycoproteins or glycolipids

Surface area is important for a cell.

• True
• False