BIOL 2051 Study Guide - Midterm Guide: Endergonic Reaction, Cellular Respiration, Exergonic Reaction

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5 Oct 2016

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Chapter 5 answers: the biomembrane that effectively separates the cell from the environment, moves items such as molecules or ions from one side of the membrane to the other. Lipids, proteins, and carbohydrates: semifluid, fluid mosaic (not a rigid structure, made of different types of biological molecules, temperature keeps the membrane semifluid, at the perfect amount of fluidity. Facilitated diffusion: requires the help from a protein. Active transport: moving against the concentration gradient, low to high concentration. Endo- is when the plasma membrane invaginates around some molecule creating a vesicle inside of a cell: phagocytosis (big stuff), receptor mediated endocytosis (specific items), pinocytosis ( cell drinking whatever it catches in the extracellular fluid). Chapter 6 answers: the total of all chemical reactions in an organism, reversible is a reaction that can be reversed, water. Irreversible cannot be reversed, burning paper: kinetic: associated with movement.

Related Questions

NEED HELP FAST!Please write 2 pargragh for each question!

Describe the fluid mosaic model of the plasma membrane and explain how membranes manage to stay fluid with temperature changes. Be sure to explain what the plasma membrane is composed of. How are the sides of a membrane different?

What are membrane proteins and how many types are there? What are their functions?

Define osmosis, diffusion and active transport. Compare and contrast the three. Explain the subtle differences between them. What are the forms of bulk transport in cells?

Starting from the nucleus, work your way all the way out to the ECM and explain each cell organelle IN DETAIL, with labeled diagrams, and their functions. Be sure to include the cytoskeleton and be sure to differentiate between plant and animal cells. (WORTH DOUBLE POINTS)

burgundylion306

1. predict the direction of water movement based on differences in solute concentrations. Use the terms osmotic pressure, hypotonic, isotonic, and hypertonic
2. Why do membranes have to be selectively permeable?

3. What determines whether a particular substance can diffuse (simple or facilitated) through a membrane?

4. What mechanisms drive molecules across membranes? Use the terms concentration gradient, (facilitated) diffusion and active transport.
5. Which parts of the plasma membrane proteins do you expect to be hydrophobic or hydrophilic? Justify your answer.
concise and short answers pls

QUESTION 1

Ion diffusion across plasma membrane needs

		a concentration gradient across the membrane
		specific transporters
		ATP
		provide extra energy for the transport

2 points

QUESTION 2

There are four types of large biological molecules

2 points

QUESTION 3

Active transporters transport substances across cell membrane against ____________

2 points

QUESTION 4

Which of the following is a nonpolar amino acid?

	1.	Valine
	2.	Serine
	3.	Aspartic acid
	4.	Glutamic acid

2 points

QUESTION 5

Membrane potential of a cell is created by:

	1.	sodium ion concentration difference between inside and outside of the cell
	2.	a difference in protein concentration across the cell membrane
	3.	an electrical potential difference between the intracellular fluid and the surrounding extracellular fluid
	4.	a difference between the potassium concentration inside and outside of the cell

2 points

QUESTION 6

A mutation resulted in a change from a valine to a glutamic acid in a peptide sequence. This mutation will NOT change the protein folding

True

False

2 points

QUESTION 7

Ions can be transported across plasma membrane by

	1.	diffusion
	2.	No need of transporters
	3.	osmosis
	4.	active transport

2 points

QUESTION 8

Phospholipid is composed of

	1.	A glycerol backbone
	2.	One protein group
	3.	One carbohydrate group
	4.	Two fatty acid chains and one phosphate group

2 points

QUESTION 9

Prokaryotic cells and eukaryotic cells are similar in

	1.	Plasma membrane
	2.	nucleus
	3.	mechanism for protein translation
	4.	endoplasmic reticulum

2 points

QUESTION 10

Disulfide bonds are formed between two histidine residues

True

False

BIOL 2051 Study Guide - Midterm Guide: Endergonic Reaction, Cellular Respiration, Exergonic Reaction

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