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LSU / Engineering / BIOL 1001 / What is the function of transport proteins?

What is the function of transport proteins?

What is the function of transport proteins?


School: Louisiana State University
Department: Engineering
Course: General Biology
Professor: S. crousillac
Term: Fall 2018
Cost: 50
Name: Biology Exam 2 Study Guide
Description: A study guide to help you see what content and terms you know and need to know for exam 2.
Uploaded: 10/11/2018
8 Pages 45 Views 5 Unlocks

E X A M 2 :

What is the function of transport proteins?


Chapter 5

1. Molecules stand idle and do not move

a. True b. False  

2. A phospholipid bilayer is made of a ________ head and _______ tail. a. Hydrophobic, hydrophilic

b. Hydrophobic, hydrophobic

c. Hydrophilic, hydrophobic

d. Hydrophilic, hydrophilic  

3. Water surrounds all cells

a. True b. False

4. _______ stabilizes the membrane and gives cell control over what crosees its  membrane

a. Diffusion

b. Nucleus

c. Cholesterol  

d. Interstitial fluid

5. Define diffusion, osmosis, active transport, and passive transport.

6. Match the membrane protein with its function:

What is the function of connection proteins?

a. Enzymes i. identifies cells as “self” or invader” b. Recognition proteins (glycoproteins) ii. hold cellular organisms  together  

c. Transport Proteins iii. speeds up reactions

d. Receptor Proteins iiii. regulate movement across  membrane

e. Connection Proteins iv. direct and indirect sensors

7. There is a beaker of water with a divider with 7 grains of salt on the left side  and 13 on the right. Identify the following in the example.

a. Solute

b. Solvent

c. Gradient (does it flow from left to right or right to left?)

8. Which of the following is true?

a. Passive transport required energy

b. Facilitated transport is a form of active transport

What is the function of receptor proteins?

c. Plasma membranes are selectively permeable  If you want to learn more check out What is literature?

d. Osmosis flows from low to high concentrations

9. Plant cells rigid shape is thanks to _________

a. Turgor Pressure

b. Cytoplasm

c. Chloroplasts  

d. Endocytosis  

10.Give examples of both passive and active transport.

11.In animals, ______ junctions stick cells together, ______ junctions make cells  waterproof, and ______ allow communication between cells.  

Chapter 6

12.Energy can neither be created nor destroyed, only converted a. True b. False

13.As energy converts from more useful to less useful forms, the transfer is  100% efferent We also discuss several other topics like What is the meaning of heritability?

a. True b. False

14.To get started, chemical reactions require ____________ to get started.

15.When the product contains less energy than the reactants, this is an ________  reaction.

a. Endergonic b. Exergonic

16.Generally, when things are being build in cells, this is an _______ reaction  while things being destroyed is an _______ reaction.  We also discuss several other topics like How to calculate the current population size?

17.Milk production during pregnancy is an example of _____________, as these  enzymes are only needed during a specific life stage.

18.What is allosteric regulation?

19.When an optimal level of a product is reached, production of that product  _______

a. Continues b. Stops  

Chapter 7

20.The Calvin Cycle turns (CO2/glucose) into (CO2/glucose).

21._______ prevents water from evaporating from leaves

a. Chlorophyll

b. Cuticle

c. Glucose

d. Gana

22.During photosynthesis, _______, _______, and ______, create glucose and  oxygen.

23.The fluid within the chloroplast is called the _____, which when stacked is  called a ______.

a. Sheath cell, stroma

b. Grana, stroma

c. Stroma, grana,  If you want to learn more check out Who is copernicus?

d. Mesophyll, grana

24.__________ __________ catch all wavelengths but green and allow for the color  of leaves. In autumn, chlorophyll breaking down before __________ causes the  color change of the leaves.

25.Place these in order of the path of electrons during light reactions.

PS 1, PS 2, NADP+, ETC 1, ETC 2

26.What is made during PS1? PS2? Don't forget about the age old question of What are the four major categories of macromolecules?

27.Summarize the steps of light reactions.

28.ATP synthesis is driven by chemiosmosis  

a. True b. False

29.To avoid a build up of hydrogen, it exits the cell passively in ______. Chapter 8

30.What enters glycolysis? What leaves glycolysis?

31.Order the following so that they accurately describe glycolysis.

a. A net of two ATP molecules and two NADH (high-energy electron  carriers) is formed

b. During the energy investment stage, phosphate groups and energy  from each of the two ATP are added to glucose to produce fructose  bisphosphate

c. During the energy-harvesting stage, the two G3P molecules are  converted into two pyruvate molecules, resulting in four ATP and two  NADH molecules

d. Fructose-bisphosphate is broken down into two G3P molecules

32.Order the following to accurately describe cellular respiration.  a. The NADH and FADH2 molecules donate their energetic electrons to  the ETC embedded in the inner mitochondrial membrane

b. Two pyruvate molecules enter the mitochondrion and are completely  broken down, yielding two ATP and ten high-energy electron carriers:  eight NADH and two FADH2. The carbon atoms from the pyruvates are  released in six molecules of CO2  If you want to learn more check out What does the 4th amendment protects?

c. These electrons are passed to the ETC, where their energy is used  during chemiosmosis to generate a gradient of H, yielding a net of 32  ATP

d. As each acetyl CoA passes through the Krebs cycle, its energy is  captured in one ATP, three NADH, and one FADH2. The carbons of  acetyl CoA are released in two CO2 molecules

e. High-energy electrons release energy that is harnessed to pump H  into the intermembrane space as they pass through the ETC  

f. Energy-depleted electrons exiting the ETC are picked up by H+  released from NADH and FADH2 and combine with oxygen to form  water

g. In the mitochondrial matrix, each pyruvate molecule is converted into  acetyl CoA, producing one NADH per pyruvate molecule and releasing  one CO2

33.Fermentation produces ATP

a. True b. False

34.What moves through ATP synthase during chemiosmosis?

a. Electrons

b. Water

c. Hydrogen  

d. Glucose

35.Where do the electrons come from to power the ETC during cellular  respiration?

a. NDH and FADH2

b. ATP

c. ADP and FADP


36.If oxygen is not available, ________ is the second state of glucose breakdown 37.Anaerobic respiration yields ___ ATP while aerobic yields ___ ATP.

Chapter 9

38.Cell division creates two daughter cells that are genetically identical a. True b. False

39.What kind of cell can never divide again?

a. Stem

b. “other”

c. Differentiated

d. Eukaryotic

40.(sexual/asexual) reproduction creates genetically identical offspring 41.Summarize prokaryotic cell fission.

42.A stretched out chromosome is roughly how long?

a. 5 inches

b. 9 feet

c. 1 yard

d. 7 inches

43.Sister chromatids are held together by a (telomere/centromere). 44.Interphase is made of 3 subphases. Identify and describe the phases.  

45.Place the following in the order of mitotic cell division. a. Anaphase

b. Cytokinesis  

c. Metaphase

d. Telophase

e. Prophase

46.Chromosomes lining up down the middle of the cell describes a. Anaphase  

b. Cytokinesis  

c. Metaphase

d. Telophase

e. Prophase  

47.An animal cell “pinching” apart and a plant cell forming a cell plate both  describe  

a. Anaphase

b. Cytokinesis

c. Metaphase

d. Telophase

e. Prophase

48.Describe the remaining phases.

49.What is the cell cycle driven by?

a. Oxygen

b. Hydrogen

c. Kinases

d. ATP

50.There is a checkpoint between metaphase and anaphase. a. True b. False

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