DSW 7. Biol Membranes - Fall 2023 (1)

docx

School

Austin Community College District *

*We aren’t endorsed by this school

Course

311C

Subject

Biology

Date

Dec 6, 2023

Type

docx

Pages

Uploaded by BailiffWorld12738

BIO 311C Introductory Biology I K. Sathasivan Discussion Section Worksheet – 7: Biological Membranes Please make an attempt to answer these questions before coming to discussion. We will guide you through the questions and help facilitate discussion. Attendance and active participation at discussions is expected. Complete this DSW, and upload in Canvas by Friday 10 PM. 1. Draw the structure of a biological membrane with simplified structures of phospholipid (saturated and unsaturated), integral and peripheral proteins, sterols and oligosaccharides. Label the structures and write their functions in parenthesis. (Do not copy paste from the web) 2. A. Complete the following Table with two examples of each type of molecules . Polarity Small (1 – 100Da) Medium (100 – 1000Da) Large (>1000Da) Polar Water, NH3 Glucose, sucrose, amino acids DNA, RNA Steroids, alanine CO2, O2 Steroids, carotenoids, hydrocarbons Fats, triglycerides, lipids B. Write one possible mode of transport is possible for each of these molecules. Polarity Small (1 – 100Da) Medium (100 – 1000Da) Large (>1000Da) Polar facilitated diffusion Active transport Exocytosis, endocytosis Non-polar Simple diffusion Simple diffusion Exocytosis, endocytosis

C. Label the diagrams of cells using the following terms : diffusion, active transport, osmosis, and equilibrium. Draw arrows to show the direction of transport . You may use the terms more than once! 1.simple diffusion, 2.Osmosis, 3.facilitated Diffusion (polar and medium), 4.osmosis hypotonic, 5.diffuson. 6. Osmosis, hypotonic (water is greater than) D. Using the graph on the right, answer the questions below. Aquaporin is a protein channel (transmembrane protein) used for rapid diffusion of water through the plasma membrane (faster than simple osmosis). It’s present in all kingdoms of life. Oocytes are egg cells. For more info, visit this link: https://www.ks.uiuc.edu/Research/aquaporins/ 1. Why did the cells placed in a hypotonic solution, with the aquaporin mRNA increase in volume? Because the oocyte has aquaporin allowing more water entered up and it swelled 2. What happened at time point X? At the point X the oocyte was swelled up and went over the relative volume because it had mRNA (burst) 3. What would happen if the two cells were placed in a hypertonic solution or isotonic solution? If they were both placed in a hypertonic solution the oocyte with mRNA would have a low relative volume and they would shrink more, and the oocyte without mRNA would shrink less quicker. And if they were both placed in an isotonic solution, they would be at equilibrium with each other.

E. List the three different sources of energy used in active transport and one example for each source. Primary active transport (sodium potassium pump) Secondary active transport (glucose sodium pump) Large scale transport (transporting DNA and RNA) F. You had a lunch with rice, beans, and chicken salad. Select any groups of macromolecules from these food items and mention how they are transported from your intestine into the epithelial (outer surface) cells close to the intestine. Carbohydrates ( transported to the epithelial cell by common proteins through secondary active transport) Proteins (Phosphorylation protein is transported from ATP changing the shape of the protein which allows it to enter the epithelial cell)

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

Related Documents

Genetic Word Problems.docx

Quiz 4 Natural Selection (Opens Friday, Sept 29, due Thursday, Oct 5, 11:59 pm): Attempt review | eC

Lab 1 Pre-Lab Quiz: Attempt review | eClass.pdf

Lab 2 Pre-Lab Quiz - Darwinian Snails: Attempt review | eClass.pdf

Lab 3 Pre-Lab Quiz - Sickle-Cell Alleles: Attempt review | eClass.pdf

Quiz 3: HWE and Natural Selection (Opens on Friday, Sept 22; due Thursday, Sept 28 @ 11:59pm): Attem

Discussion Quiz 11. Photosynthesis Fall 2023.docx

Quiz 6 Non-random mating, Phylogenetics (Opens Friday, Oct 20, due Thursday, Oct 26, 11:59 pm): Atte

DSW 6. Cell Structure and Function - Fall 2023.docx

Week 6 laboratory reflection - Plant Transpiration.docx

Week 5 laboratory reflection - UV mutagenesis.docx

Week 3 laboratory reflection - Isolation and Quantification of Microorganisms.docx

Recommended textbooks for you

Biochemistry

ISBN:9781305577206

Author:Reginald H. Garrett, Charles M. Grisham

Publisher:Cengage Learning

Biochemistry

ISBN:9781305961135

Author:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal

Publisher:Cengage Learning

Human Physiology: From Cells to Systems (MindTap ...

Biology

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Cengage Learning

Microbiology for Surgical Technologists (MindTap ...

Biology

ISBN:9781111306663

Author:Margaret Rodriguez, Paul Price

Publisher:Cengage Learning

Complete Textbook Of Phlebotomy

Biology

ISBN:9781337464314

Author:Hoeltke

Publisher:Cengage

Principles Of Pharmacology Med Assist

Biology

ISBN:9781337512442

Author:RICE

Publisher:Cengage

SEE MORE TEXTBOOKS

Recommended textbooks for you

Biochemistry
Biochemistry
ISBN:9781305577206
Author:Reginald H. Garrett, Charles M. Grisham
Publisher:Cengage Learning
Biochemistry
Biochemistry
ISBN:9781305961135
Author:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Microbiology for Surgical Technologists (MindTap ...
Biology
ISBN:9781111306663
Author:Margaret Rodriguez, Paul Price
Publisher:Cengage Learning
Complete Textbook Of Phlebotomy
Biology
ISBN:9781337464314
Author:Hoeltke
Publisher:Cengage
Principles Of Pharmacology Med Assist
Biology
ISBN:9781337512442
Author:RICE
Publisher:Cengage