🏷️ LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION →
Log in
HomeClass Notes1,200,000CA670,000

BI110 Lecture Notes - Lecture 18: Active Transport, Endocytosis, Cell Membrane

20 views1 pages
ceruleanlion382
29 Apr 2016
School
WLU
Department
Biology
Course
BI110
Professor
Matthew Smith

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

Largest molecules transported by passive and active transport are the size of amino acids or glucose. Move large molecules and particles into and out of cells. Substances are shuttled into, out of and within a cell through vesicles. In exocytosis, substances are directed out of a cell to be secreted by fusing a vesicle to the cell membrane. In endocytosis, substances are engulfed into a cell by the formation of a vesicle around them. (can be used for transporting soluble cargo") Vesicle membrane fuses with pm, releasing contents to cell exterior. Proteins in vesicle membrane become a part of pm. Vesicles containing neurotransmitter arrive at the cell membrane.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents

BI110 Lecture Notes - Lecture 10: Cytoskeleton, Invagination, Microtubule
goldant554
BI110
Final Exam
Study Guide
BI110 Study Guide - Final Guide: Exocytosis, Endocytosis, Membrane Protein
erinclam627
BI110 Chapter Notes - Chapter 19: Clathrin, Listeria, Neurotransmitter
scarletseal808

Related Questions

I have this questions for my homework i need help with them look please it is important i need help so please give me the correct answers for each question and also please be clear to understand and aslo be correct it is very important becuase i need them so i really need the right answers. please help me and on Questions 6 and 9 please help me with it hope you can help me with the correct answers please

Question 5

At a constant temperature, if you increase the number of unsaturated fatty acid chains in the phospholipid, the membrane will become......

less fluid
more fluid
fluidity will be unchanged

Question 6

Bacteria in a hot spring at 80 degrees celsius would be expected to have ______________ in their cell membrane

high proportions of saturated phospholipids
high proportions of unsaturated phospholipids
an equal ratio of saturated to unsaturated phospholipid

Question 7

Membrane proteins have an important role in membrane fluidity

True
False

Question 8

The HIV virus can't attach to cells that have a mutation in the CCR5 gene and so such individuals are resistant to HIV. What population of people have a higher incidence of the mutant CCR5 gene and why?

europeans because their ancestors survived the bubonic plague
North Americans because their ancestors survived small pox
europeans because they have a longer evolutionary past with HIV
Africans because they have a longer evolutionary past with HIV

Question 9

Nematode trapping fungi have ______________ molecules called ______________ that recognize specific carbohydrates on the surface of the nematode worms. This is how a fungus can recognize that its prey, the nematode worm, has wriggled into the loop. Write two words on lowercase separated by a space with no other syntax

Question 10

Diffusion requires energy

True
False

Question 11

The net direction of molecule movement when molecules diffuse is

down their concentration gradient
random directions

Question 12

In osmosis, water molecules from a solution of higher solute concentration cross a semi-permeable membrane into a solution of lower solute concentration?

True
False

Question 13

Which best defines osmosis?

In osmosis, water from a solution of lower solute concentration move across a semi-permeable membrane into a solution of higher solute concentration?
In osmosis, water from a solution of higher solute concentration move across a semi-permeable membrane into a solution of lower solute concentration?

Question 14

Animal cells placed into a hypotonic solution would most likely?

lyse (burst)
shrink
remain unchanged in size

Question 15

Glucose and amino acids move into cells via carrier proteins, the same protein can move glucose or amino acids

True
False

Question 16

ATP powered pumps move substances into and out of cells by diffusion?

True
False

Question 17

For every 3 Na ions moved out, 2 K ions are moved into a cell by one cycle of the sodium-potassium pump.

True
False

Question 18

Bulk transport of fluid and any of the substances within that fluid is called

pinocytosis
phagocytosis
receptor-mediated endocytosis
exocytosis

I have this questions for my homework i need help with them look please it is important i need help so please give me the correct answers for each question and also please be clear to understand and aslo be correct it is very important becuase i need them so i really need the right answers. please help me and be correct and clear it is important ok

Question 5

At a constant temperature, if you increase the number of unsaturated fatty acid chains in the phospholipid, the membrane will become......

less fluid
more fluid
fluidity will be unchanged

Question 6

Bacteria in a hot spring at 80 degrees celsius would be expected to have ______________ in their cell membrane

high proportions of saturated phospholipids
high proportions of unsaturated phospholipids
an equal ratio of saturated to unsaturated phospholipid

Question 7

Membrane proteins have an important role in membrane fluidity

True
False

Question 8

The HIV virus can't attach to cells that have a mutation in the CCR5 gene and so such individuals are resistant to HIV. What population of people have a higher incidence of the mutant CCR5 gene and why?

europeans because their ancestors survived the bubonic plague
North Americans because their ancestors survived small pox
europeans because they have a longer evolutionary past with HIV
Africans because they have a longer evolutionary past with HIV

Question 9

Nematode trapping fungi have ______________ molecules called ______________ that recognize specific carbohydrates on the surface of the nematode worms. This is how a fungus can recognize that its prey, the nematode worm, has wriggled into the loop. Write two words on lowercase separated by a space with no other syntax

Question 10

Diffusion requires energy

True
False

Question 11

The net direction of molecule movement when molecules diffuse is

down their concentration gradient
random directions

Question 12

In osmosis, water molecules from a solution of higher solute concentration cross a semi-permeable membrane into a solution of lower solute concentration?

True
False

Question 13

Which best defines osmosis?

In osmosis, water from a solution of lower solute concentration move across a semi-permeable membrane into a solution of higher solute concentration?
In osmosis, water from a solution of higher solute concentration move across a semi-permeable membrane into a solution of lower solute concentration?

Question 14

Animal cells placed into a hypotonic solution would most likely?

lyse (burst)
shrink
remain unchanged in size

Question 15

Glucose and amino acids move into cells via carrier proteins, the same protein can move glucose or amino acids

True
False

Question 16

ATP powered pumps move substances into and out of cells by diffusion?

True
False

Question 17

For every 3 Na ions moved out, 2 K ions are moved into a cell by one cycle of the sodium-potassium pump.

True
False

Question 18

Bulk transport of fluid and any of the substances within that fluid is called

pinocytosis
phagocytosis
receptor-mediated endocytosis
exocytosis

Fill in the blank assignment

Biological membranes are primarily formed from two types oforganic molecules, (16)______, composed of amino acids and(17)_____, composed of phosphates, glycerol and fatty acids.Membranes are (18)___ ____ to molecules allowing some to freelypass through and restricting or preventing the passage of others.Molecules may cross membranes on their own moving from areas ofhigher to lower concentration, with no expenditure of externalenergy, in a process called (19)____. Protein molecules that spanthe membrane may assist or carry other molecules across themembrane, (20)_____ _____, also from areas of higher to lowerconcentration. (21)____ _____ moves molecules across membranes fromareas of lower to higher concentration with the use of energy inthe form of ATP. As opposed to the process of passive transport,illustrated by answers (19) and (20), molecules move against their(22) ______ _______.

If you compare two situations on either side of a cellularmembrane, they are said to be (23)_____ if their soluteconcentrations are equal. Solutions that have higher soluteconcentrations are (24)_____ when compared to solutions with lowersolute concentrations, (25)______. If molecules or substances aretoo large to pass through membranes on their own or with the use ofprotein carriers, vesicles may help to move these materials in orout of the cell as vesicles fuse with or pinch off membranes. This(26)____ ____ of materials is called (27)____ if materials aremoved into cells. The transport of lage solids or "cell-eating" is(28)_____. Entry of liquids is termed (29)____ or "cell drinking."Movement of materials out of the cell is (30)_____.