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Bio 101 - Chapter 05 - Membranes
Chapter 5 - Membranes
37
Biology
Undergraduate 1
06/22/2016

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Term
What are the components of the plasma membrane as described by the fluid-mosaic model.
Definition

Phospholipids

Proteins

 

Cholesterol

Term

What do glycolipids and glycoproteins have in common? 

Definition

They have attached carbohydrate chains. 

Term

The gradual increase or decrease in concentration from one point of concentration to another constitutes a concentration

Definition

Gradient

Term

Why does active transport require energy?

Definition

Molecules are moved against the concentration gradient

 

 

Active transport requires carrier proteins, which often require energy. 

Term

Allow a particular molecule or ion to cross the plasma membrane freely.

Definition
Channel proteins
Term
Selectively interacts with specific molecules so that it can cross the plasma membrane.
Definition
Carrier proteins
Term
Joins cells together.
Definition
Junction proteins
Term

The extracellular matrix is composed mostly of:

Definition

Polysaccharides and proteins

Term

Which of the following are needed to complete active transport molecules?

Definition

Carrier protein, energy, plasma membrane

Term

This integral protein has a carbohydrate chain attached and is called a:

Definition

Glycoproteinv

Term

Enzymatic plasma proteins are involved in:

Definition

Catalyzing metabolic reactions. 

Term

The sodium-potassium pump moves sodium ions to the outside of the cell, and potassium ions to the inside of the cell. Both ions are moved up their concentration gradient. This type of transport is called ___ transport. 

Definition

Active

Term

Molecules that are too large to be transported across the plasma membrane by a carrier protein are moved via 

Definition

Bulk transport

Term

In bulk transport, ____ made from membrane are used to transport particles into or out of the cell.

Definition

Vesicles

Term

Receptor proteins are involved in:

Definition

Binding signaling molecules to bring about physiological changes

Term

The process of secretion in which an intracellular vesicle fuses with the plasma membrane so that the vesicle’s contents are released outside the cell:

Definition

Exocytosis

Term

____ proteins are involved in selective transport of molecules across the cell membrane.

Definition

Carrier

Term

Carrier proteins:

Definition

-          Aid in both facilitated transport and active transport

 

-          Are specific to moving specific molecules

Term

Gylcocalyx help bacterium with:

Definition
Adhesion, cell-to-cell recognition, signal reception, and protection
Term

A ____ is an adhesion junction that connects the cytoskeletons of adjacent animal cells creating a flexible sheet of cells. 

Definition

Desmosome

Term

As temperature increases, the rate of diffusion ___

Definition

Increases

Term

The type of junction found between cells in which the adjacent plasma membranes do not touch, but ar held together by intercellular filaments is called a  ____

Definition

Adhesion junction

Term

___ uses vesicles to move into and out of the cell. 

Definition

Bulk transport

Term

Tonicity:

Definition

The strength of a solution compared to that of a cell. 

Term

____ affects the fluidity of membranes

Definition

Cholesterol

Term
Particular molecules or ions freely cross the plasma membrane with assistance from ____
Definition

Channel proteins

Term

A person’s blood type is determined by the presence of particular ___ in the membranes of red blood cells. 

Definition

glycoproteins

Term

When a plant cell is placed in a hypertonic solution which of the following will occur?

Definition

Plasmolysis will occur

Term
The term hemolysis refers to ______.
Definition

Red blood cells that burst after being placed in a hypotonic solution

Term
Insulin leaves insulin-secreting cells by _____.
Definition

exocytosis

Term
The peptide hormone, follicle stimulating hormone (FSH), would activate its specific target cells by _____.
Definition
binding a receptor protein in the plasma membranes
Term

Transplant rejections are the result of the immune system's response to foreign ______ and __________.
Definition

glycoproteins; glycolipids

Term
Receptor proteins are involved in
Definition
biding signaling proteins to bring about physiological changes
Term
A ____ is an adhesion junction that connects the cells of adjacent animal cells creating a flexible network.
Definition
desmosome
Term
crenation
Definition
shrinking of animal cell due to hypertonic solution
Term
plasmodesma
Definition
junction between plant cells
Term
regulated secretion
Definition
Signals the cell to release product via bulk transport
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