Plant Physiology - Transportation Questions and Answers

Drug detoxification by hydroxylation transiently increases intracellular Ca activities a second messenger leads to phagosome formation increases solubility of drugs enhancing their excretion

Q 17 12pts If the proton transport function of Complex III of the electron transport chain is completely inhibited determine the total ATP production from the complete metabolism of one molecule of glucose Note assume all other functions of metabolism and the electron transport chain are functioning properly and assumer 10 protons are required to turn ATP Synthase one complete rotation Show your work

Question 9 The final electron acceptor in lactic acid fermentation is oxygen lactic acid pyruvate ONAD

Question 9 The oxygen used during aerobic respiration phosphorylates ATP attracts electrons forms CO2 moves protons

Substrate level phosphorylation describes the synthesis of ATP by build up of hydrogen ions across a membrane how ATP drives the work of the cell the direct synthesis of ATP from a phosphorylated substrate how ATP is produced by oxidative phosphorylation

nucleotide substitutions synonymous silent no aa change nonsynonymous aa altering missense from one aa to another aa haemoglobin A mutation occurred in the MC1R gene A mutation occurred in the MC1R mRNA nonsense sense codon Stop MC1R Based on your knowledge of mutations and protein synthesis which of the following is true of now a mutation can result in yellow coat color in Labrador Retrievers Select all that apply A mutation in the DNA results in an alteration of the mRNA The normal MC1R allele results in either black or brown fur color in Labrador Retrievers The mutant MC1R allele results in yellow coat color in Labrador Retrievers The mutant MC1R allele results in a stop codon replacing an amino acid codon The shortened MC1R gene product that results from the mutant allele is nonfunctional Because yellow Labrador Retrievers have this mutation they are less healthy then black or brown coated Labrador Retrievers Mutations are bad for the organisms that inherit them

Question 18 1 point Describe what happens when seawater is consumed to quench thirst a Seawater draws water out of the body resulting in further dehydration and diarrhea Seawater can quench thirst once it is boiled Seawater helps diarrhea Seawater must be ingested at twice the volume to quench thirst Seawater quenches thirst when directly ingested

has an absorption peak of 700nm while has an absorption peak of 680nm

A student places a potato cube into a beaker of distilled water as shown below Distilled water The potato cube has a up of 0 2 bar and a of 0 4 bar Water potential p s p pressure potential solute potential Assuming standard atmospheric pressure which of the following is true Choose 1 answer Potato cube A The water potential of the potato cube is 0 bar and the water potential of the distilled water is 0 6 bar The water potential of the potato cube is 0 bar and the water potential of the distilled water is 0 2 bar The water potential of the potato cube is 0 6 bar and the water potential of the distilled water is 0 bar The water potential of the potato cube is 0 2 bar and the water potential of the distilled water is 0 bar

The exchange of pieces of chromatid material between homologs is called O crossing over O cytokinesis homo exchange synapsis

1 Listeria monocytogenes is the causative of listeriosis which can adversely affect pregnan Pregnant individuals are advised to avoid consuming cold deli meat or unpasteurized dairy products to avoid potentially becoming ill The reason these foods in particular pose a threat is because Listeria can grow at 4 C in the refrigerator however it prefers higher temperatures to support optimal growth How would L monocytogenes be classified a psychrotolerant psychrotroph b psychrophile c mesophile d thermophile 2 Protein X is present in both thermophiles and mesophiles Protein X performs the same function in both thermophiles and mesophiles Generally how would you expect the protein to differ when comparing the structure of protein X between thermophiles and mesophiles a The protein in the thermophile would have more intramolecular bonds when compared to the same protein in the mesophile b The protein in the thermophile would have fewer intramolecular bonds when compared to the same protein in the mesophile c The protein in the thermophile would contain fewer hydrophobic amino acids when compared to the same protein in the mesophile d The proteins would be identical in both organisms because temperature does not affect protein structure 3 Mono Lake is located close to Yosemite National Park in California From this lake microbiologist have successfully isolated alkalophilic halophiles Which of the following is likely the best description of the water chemistry found at the lake a It has a high pH and a low salt concentration b It has a low pH and a low salt concentration c It has a high pH and a high salt concentration d It has a low pH and a high salt concentration

1 points Save Answer It is summer and you are excited about going to your local amusement park and specifically about riding the new roller coaster that was just built You imagine waiting at the top of the stairs for the roller coaster to pull into the station climbing into the car strapping yourself into the seatbelt and pulling down the harness You can imagine the cars slowly chugging up to the top of the first hill coming down on the other side and the excitement you expect to feel as you go along for the ride Of all of the things that you have imagined which is an example of potential energy O Waiting at the top of the stairs for the roller coaster to pull into the station O Climbing into the car O Pulling down the harness O The roller coaster car going up the first hill

estion 3 Match the stages of eukaryotic cell respiration with the location in which the reactions occurs Electron transport chain Citric acid cycle Pyruvate oxidation Glycolysis A Mitochondrial matrix B Mitochondrial inner membrane C Cytoplasm D Outer mitochondrial membrane

The transporter of the ETC that pumps hydrogen ions removed from NADH is O a facillitated diffustion uniport O is an active transport antiport O is a facillitated diffusion antiport O an active transport uniport

Moving to another question will save this response estion 7 Question 7 of 9 1 points is a phenomena that occurs when the end product of a biochemical pathway binds to an active site on the enzyme that catalyzes the first reaction of the pathway O Anabolism O Feedback inhibition O Catabolism O Noncompetitive inhibition Save Answer

What is the interaction of DNP in cellular respiration O It interfers with complex 1 O none of the choices is correct O it blocks the ATP synthase transporter channel O It cases the cristae to leak

CO2 is a wast product of cellular respiration From which of the phases does it originate Glycolysis O Citric Acid Cycle none of the choices is correct

The grass output of ATP from glycolysis is 2 4 2 1 whereas the net output of ATP is

Each of the following statements about the citric acid cycle is true except oxidation by transfer of electrons to coenzymes occurs at two steps substrate level phosphorylation generates ATP GTP at one step decarboxylation to release CO2 occurs at two steps acetate enters the citric acid cycle and joins a four carbon acceptor molecule to form citrate

The electron transport chain consists of a series of redox reactions in which electrons are transferred to oxygen as the final electron acceptor true O false

POST LAB Fill in the blanks in questions 1 9 with the correct organe the leaves were soft and wilted Name the organelle that became dehydrated You went on vacation and forgot to water your plants When you returned milib baqala vabaved ello y bod siosqe cive network of smooth ER I could

3 3 The diagram below shows a process that occurred in the nucleus of a cell Which of the following statements describes what happened in this process MIXI ALT XXXI DIXI GC AIT GC ODNA was translated ODNA was converted to RNA OA mutation occurred as DNA was replicated O Pieces of DNA from different chromosomes were joined 1 pc

A plant cell in a hypotonic solution is turgid is flaccid shrivels wilts

Two neighboring types of coral release gametes at the same time but the gametes are not compatible and cannot produce embryos Which term best describes this situation A Reproductive isolation B Behavioral isolation C Temporal isolation D Geographic isolation

Which of the following membrane activities requires energy from ATP hydrolysis facilitated diffusion of chloride ions across the membrane through a chloride channel movement of glucose molecules into a bacterial cell from a medium containing a higher concentration of glucose than inside the cell O movement of Nations from a lower concentration in a mammalian cell to a higher concentration in the extracellular fluid movement of carbon dioxide out of a paramecium

sten Which of the following statements is are true Select all that apply osmosis is a form of diffusion if there is no concentration gradient a substance will not diffuse diffusion of most substances requires ATP powered pumps in the cell s membrane gases can diffuse just like liquids cell membranes help to maintain solute gradients

In the diagram what would happen to the concentration of A O increases O decreases O no change H O B C

If energy is required to move molecules across a microbial membrane then the transport method must be O Active transport O Facilitated diffusion O Osmosis O Passive diffusion O Endocytosis

1 Explain one way in which facilitated diffusion is the same as simple diffusion and one way in which it is different from simple diffusion

A leaf with a thicker cuticle would most likely exhibit transpiration compared to a leaf with a thinner cuticle A the same amount of C negative B less D more

When plants colonized on land which of the following was NOT an obstacle they had to overcome A autotrophy vs heterotrophy B transport of water C method of gas exchange D gravity vs buoyancy

Plants absorb water from the soil to use for the process of photosynthesis The water must move from the soil into the roots of the plants up through the xylem and into the cells in the leaves of the plants The diagram below shows how water is able to move up the xylem by adhering to the xylem in the stems of plants The movement of water through xylem cells Which of the following best explains how water is able to move from the roots of a plant through the xylem and to the leaves of the plant A water molecule xylem cell B Water molecules are able to form hydrogen bonds with the xylem walls and they are pulled up the xylem Water molecules have the ability to form hydrogen bonds with each other and with the walls of the xylem

A student placed a semipermeable membrane inside a U shaped channel with two cham bers as shown in the image below The membrane allows the movement of water but not the movement of salt The student wants to manipulate the rate of osmosis that occurs across the membrane A L An experimental setup for testing osmosis B chamber A C semipermeable membrane Which of the following experimental designs will result in the fastest net rate of water movement into Chamber A placing salt water in Chamber A and distilled water in Chamber B placing salt water in both chambers chamber B placing distilled water in Chamber A and salt water in Chamber B

Oxygen is necessary for essential cellular processes such as cellular respiration Oxygen most likely enters a cell through which of the following processes A BO C D facilitated diffusion through channel proteins simple diffusion through the phospholipid bilayer active transport through aquaporins active transport through carrier proteins

What would happen to a non halophile bacteria with damaged cell wall that are placed in a hypertonic solution of NaCl Cytolysis Plasmolysis because too much water entered the cell Cells get dehydrated and lose the cell wall Cell get dehydrated and their plasma membrane shrinks Cells explode

The process shown in the figure is O diffusion active transport O endocytosis O osmosis

Select all of the cellular transport mechanisms that require energy Check All That Apply Simple diffusion Carrier mediated active transport Facilitated diffusion Bulk transport phagocytosis pinocytosis

Normal text Centu Diffusion through lipid bilayer Figure B 14 Review A comparison of passive and active transport 12 BIUA 22 Draw where these particles would be over time in the box on the right A Facilitated diffusion Passive transport Cipe The Cu P Comp Active transport 067 Form C ATP ald Cell Membrane 11

Consider the following scenario A plant cell is placed in a 80 salt solution The 80 salt solution causes plasmolysis to occur Therefore the 80 salt solution is relative to the fluid inside the cell intracellular fluid Osmotic O Hypertonic O Hypotonic OHdrolytic Isotonic

spore cytoplasm the meristem that builds protoderm procambium and ground tissues the haploid female gametophyte before fertilization Question 13 1 point Listen In order to move materials long distances through the plant body the contents of sieve elements are pulled under tension and the contents of the tracheary elements are pushed under pressure True

In the plant world it is usually advantageous to be taller than the other nearby plants because OA reproductive structures like pollen and spores can be dispersed for greater distances B it is a photosynthetic advantage to not grow in the shade of other plants C being exposed to the wind allows transpiration to work better to control water loss D all of these A B C are advantages E both A and B are advantages while C is a disadvantage

Two properties of water are cohesion and adhesion Cohesion refers to water ability to O stick to other water molecules via hydrogen bonding stick to hydrophillic surfaces cling to other liquids O cling to molecules in an aqueous solution stick to hydrophobic surfaces

Biology The concentration of Na outside a cell is 85 mEq L and inside the cell is 22 mEq L Which of the following is correct in such a situation a There is a concentration gradient across the cell membrane b Na can cross into the cell by active transport c Na can diffuse out of the cell by passive transport d A protein would be needed for Na to cross the cell membrane in either direction e a and d f b and c g All of the above are true in this particular scenario

0 00 0 20 A C B Speed 1x water diffusing throughout the cytoplasm of a cell cilia moving rapidly to propel a single celled organism through water

Pollination refers to the process by which the megasporocyte builds a pollen grain True False Question 62 1 point Listen Transpiration is a by product of photosynthesis and is triggered by photolysis the exchange of CO2 and O2 between the plant s body and the atmosphere long distance movement of nutrients and dissolved elements from the roots to the leaves th oss of liquid water from the portions of a plant s body are exposed to

Amino acids sugars and ions move across the cell membrane Their movement from a region of high concentration to a region of low con centration is accomplished by special proteins in the membrane Which of the following terms applies to this type of cell transport A active transport B facilitated diffusion C C osmosis transcription

Which of the following is an example of active transport A chromosomes migrating during cell division B C D water diffusing throughout the cytoplasm of a cell cilia moving rapidly to propel a single celled organism through water proteins moving ions from low to high concentration across a cell membrane

Look at the laboratory setup below What would this laboratory setup most likely be used demonstrate A Water containing starch indicator C B active transport D carbohydrate synthesis diffusion dehydration Artificial cell containing glucose and starch solution

Plant stems bend toward the light because of position changes in the concentrations of ethylene abscisic acid auxin

5 Which of the following plasma proteins fun in the transport of molecules across the plasma membrane A Channel proteins B Adhesion proteins C receptor proteins D recoginbition proteins