Plant Physiology - Transportation Questions and Answers

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

QUESTION 13 DOK 2 1 ALIGNED STANDARD 1 points What has Montag done that makes Beatty think that he might have a guilty conscience SELECT AN ANSWER O Montag is reading books O Montag is committing arson O Montag is harassing the Hound O Montag is expressing fear of the Hound

GLUT 1 is a transporter that allows cells to take up glucose when present at higher concentrations outside This means GLUT 1 is involved in of glucose facilitated diffusion O active transport diffusion osmosis 2 p

There are two main ways in which molecules are transported into and out of cells active transport and passive transport Which of the following is an example of active transport OA sodium potassium pump OB plasmolysis O C filtration OD osmosis

Active transport requires energy because it usually involves the movement of substances in the gas phase such as oxygen and carbon dioxide O A OB O C O D substances that can easily pass through the cell membrane such as water substances from an area of high concentration to an area of low concentration substances from an area of low concentration to an area of high concentration

xes to complete the pairs mple diffusion facilitated diffusion and active transport are three types of cellular transport that occur across cell membrane atch each term to the correct definition active transport simple diffusion facilitated diffusion a type of transport in which a substance moves spontaneously from an area of high concentration to an area of low concentration a type of transport in which a substance moves from an area of low concentration to an area of high concentration through the use of cellular energy a type of transport in which a substance moves from an area of high concentration to an area of low concentration with the aid of special transport proteins NI

A mutation in the gene coding for the trp repressor protein in E coli removes the ability of the trp repressor protein to bind to the operator however the trp repressor is still able to bind to tryptophan as normal How will this mutation affect the cell The cell will only be able to express the genes in the tryptophan biosynthesis operon in the absence of tryptophan The cell will NOT be able to express the genes in the tryptophan biosynthesis operon The cell will only be able to express the genes in the tryptophan biosynthesis operon in the presence of tryptophan The cell will constitutively express the genes in the tryptophan biosynthesis operon

em m t ecles Et the correct option and then select the Submit button al meristem Field Notes Physical Symptoms Browning of leaves followed by wilting and dropping Plants poorly anchored can be easily pulled out from ground Affected plants die within a year Soil pH normal for the region Soil nutrients normal for the region Laboratory Metabolic Analysis Reduced photosynthetic rate Reduced growth rate Low levels of minerals throughout the plant Low water levels in all regions of the plant In the diagnosis of Case 3 which mechanism is directly impacted in the tissues and structure ijonan

The process by which water crosses a selectively permeable membrane is called A D B O C endocytosis exocytosis active transport osmosis

Osmosis is the movement of water toward concentrated solutes a True b False O O

GOMETABOLISM customized Highlight the stater There are two s surroundings In a clo Plants growing

The image below shows the movement of molecules across a plasma membrane extracellular space lipid bilayer cell membrane TIMEI Source LadyofHats small hydrophobic molecules intracellular space Using the image above answer the following questions a Identify the type of cell transport that is occurring in the image and justify your answer b Explain the fluid mosaic model of the cell membrane as it relates to the movement of mole cules illustrated in the figure answer c Predict the difference you would expect to see in the movement of illustrated molecules if they were to represent hydrophilic molecules rather than hydrophobic molecules Justify your

16 Reason of edema formation is the a Imbalance between filtration and reabsorptions process Balance between filtration and reabsorption process Intensity of filtration is less than reabsorption Intensity of filtration and reabsorption is equal b d a b 17 Saturation phenomenon is characteristics of Osmosis Simple diffusion Facilitated transport Filtration

7 Intensity of facilitated diffusion depends on Only on the concerneration of molecules Only on the size of molecules On the conceneration of molecules and saturation constant K On the concentracion gradient number of transporters affinity for betrate and Vmax Which of the following is not function of the cell membrane Transport Protein synthesis Signaling Cell to cell communication

Provide full enzyme mediated arrow mechanisms for the reactions using the necessary cofactors see final page for structures A H N B HO H O CH CH OH PLP R H 0 H OH OPO H H CO CH CH COI O OH OH CH OPO2 OH TPP R O CH OH H N OPO 2 HO R H H O CH CH COI CH OH H OH H OH CH OPO NAD

The salt concentration in a cell's cytoplasm is 0.9%. The cell is placed in a 10% salt solution. Which term best describes the 10% salt solution relative to the cytoplasm of the cell? hypotonic isotonic osmotic hypertonic turgonic

Which of the following is NOT a factor that directly determines the rate of diffusion of molecules or ions across a membrane? the steepness of the concentration gradient temperature the type of molecule or ion diffusion the surface area of the membrane the size of the container holding the membrane

If both a plant cell and an animal cell are placed in a hypotonic solution, how would their responses differ? A plant cell, with its strong cell wall, will absorb water only until the cell wall restricts the expansion of the cell membrane. An animal cell will continue to take on water, potentially until its membrane ruptures. The cell membrane alone is not strong enough to withstand the increased osmotic pressure. An animal cell, with its strong cell wall, will absorb water only until the cell wall restricts the expansion of the cell membrane. A plant cell will continue to take on water, potentially until its membrane ruptures. The cell membrane alone is not strong enough to withstand the increased osmotic pressure. Both cells, with strong cell walls, will absorb water only until the cell wall restricts the expansion of the cell membrane. After the animal cell stops expanding, the plant cell will continue to take on water, potentially until its membrane ruptures. The cell membrane alone is not strong enough to withstand the increased osmotic pressure. Both cells, with strong cell walls, will absorb water only until the cell wall restricts the expansion of the cell membrane. After the plant cell stops expanding, the animal cell will continue to take on water, potentially until its membrane ruptures. The cell membrane alone is not strong enough to withstand the increased osmotic pressure.

What do we call a natural resource if it can be used up faster than it can be replaced? A. depletable B. renewable C. sustainable

Collect a fresh leaf and place it in a bowl of water. Wait 30 minutes, then observe the leaf. Describe or illustrate your observations below. Why do you think this is happening?

In the experimental conditions described below, how many molecules of dextrose do you have to add to the extracellular fluid in order to make it iso-osmotic relative to the intracellular fluid? Intracellular fluid: • Number of water molecules = 60 • Number of Dextrose molecules = 7 • Number of Sucrose molecules = 2 Extracellular fluid: • Number of water molecules = 160 • Number of dextrose molecule = ???? • Number of Sucrose molecules = 0 Enter the number of molecules of dextrose in your answer (format: for 7 enter 7 or 7.00, for 7.5 enter 7.5 or 7.50, for 7.3333 enter 7.33 etc...). Your Answer: Answer

Scientists create a linkage map of two linked genes. They find that the recombination frequency is very low. Which of the following statements is most likely true based on this result? The genes are close together on the chromosome There are a range of phenotypes for the genotype The genes are far apart on the chromosome The genes are experiencing hybrid vigor More than one gene affects a single character

Which of the following statements is FALSE? The plasma membrane allows for passage of some molecules but not others A plant cell placed in a hypertonic environment will experience plasmolysis Phagocytosis transports material out of the cell using membrane vesicles Cotransport of an ion and a molecule in opposite directions is called antiport Cells tend to be small to maximize their surface area to volume ratio (SA/V)

The movement of molecules from an area of high concentration to an area of lower concentration is called ________ Select one: a. facilitated diffusion b. diffusion c. active transport d. osmosis e. endocytosis

Which of the following is true about vascular plants? they conduct water and solutes to different parts of the plants through specialized cells they have a heart and arteries they use osmosis to transport substances throughout the plant they lack xylem and phloem

The active transport of molecules across a plasma membrane requires energy. Movement of sodium ions up their concentration gradient requires energy in the form of ATP. both of these statements are true the first statement is true, the second statement is false both of these statements are false the first statement is false, the second statement is true

You are designing an experiment comparing treating a plant with indoleacetic acid vs. acetic acid. You add 75 mL of water to 360 mL of acetic acid with a concentration of 0.87 M. Determine the molarity of the new acetic acid solution.

Water potential in potato cells was determined in the following manner. The initial masses of six groups of potato cores were measured. The potato cores were placed in sucrose solutions of various molarities. The masses of the cores were measured again after 24 hours. Percent changes in mass were calculated. The results are shown below. a. Predict what would happen to typical animal cells placed in 0.0 M and 1.0M sucrose solutions, and explain your prediction.

Which of the following is true regarding diffusion rates in cells? A. A larger volume-to-surface area ratio increases diffusion rate. B. Projections, such as villi, can increase the rate of diffusion. C. Surface area has less impact than volume on the diffusion rate. D. A small, smooth sphere has the highest rate of all cell shapes.

The movement of anything from an area of high concentration to an area of low concentration is called A. osmosis. B. facilitated diffusion. C. diffusion. D. selective diffusion.

Adding a spoonful of sugar to pure water the concentration of water. A. does not affect B. increases C. decreases D. solidifies

Be able to predict the direction of movement of water across a membrane in the following examples: A cell placed in a beaker of 10 % Saline. A carrot stick placed in 09% NaCl An IV bottle filled with 15% dextrose placed in a brachial vein.

A. Draw a picture of an elodea cell in distilled water. Label the cell wall, the cell membrane and the chloroplasts B. Draw a picture of an elodea cell in 10% NaCl. Label the cell wall, the cell membrane and the chloroplasts. Explain the appearance of these cells based on your understanding of osmosis. What effect so you think road salt would have on plants?

Plant cells in hypotonic conditions will remain A. turgid B. wilted C. plasmolyzed D. flaccid

Completion Choose a word from the list below to complete each statement. A is an area where there is a measurable difference between two concentrations. A Solution is a homogeneous mixture composed of one or more substances, known as dissolved in another substance, known as

Which of the following is not characteristic of facilitated diffusion? It requires a carrier protein. It moves substances against a concentration gradient. It requires no energy input. It involves a change in the shape of its carrier.

Important Background Information: The cytoplasm in blood cells is composed of 99% water (approximately), the remaining 1% is composed of solutes dissolved within the cytoplasm. Question: You have become severely dehydrated and end up in the hospital. A nurse brings in an IV bag which is a .9% saline solution (.9% salt, 99.1% distilled water) to inject straight into your bloodstream. Explain using your biological knowledge about osmosis why they do not give you an IV bag with 100% water and what would happen to your blood cells if they did. (A diagram may be helpful here) You cannot use the words hypotonic, hypertonic or isotonic (we did not learn them in this class and they are not needed to answer the question)

As a result of diffusion, the concentration of many types of substances always remains greater inside a membrane. eventually becomes balanced on both sides of a membrane. always remains greater on the outside of a membrane. becomes imbalanced on both sides of a membrane.

Ridding the cell of material by discharging it from sacs at the cell surface is called pinocytosis phagocytosis exocytosis endocytosis

The diagram below shows a chamber in which two aqueous solutions of NaCl are separated by a membrane (dashed line) that is permeable only to Na+ ions. When this system comes into equilibrium, which one of the following statements will be true? 15 mM NaCl 150 mM NaCl A B A) Cl- ions will diffuse from side B to side A to maintain electrical neutrality. B) Side A will be negative with respect to side B. C) Cl- ions will diffuse from side B to side A down their concentration gradient. D) Na+ ions will cross the membrane in both directions. E) The concentrations of Na+ on sides A and B will be equal.

In an experiment, membrane bags were filled with sucrose solutions in higher and higher concentrations (higher molarity). These bags were then put into beakers of distilled water. We then weighed the bags at the end and found that the mass of each bag had increased (see the graph above). This happened because: a) Water entered the bags b) Water exited the bags c) Sucrose exited the bags d) Sucrose entered the bags.

In regard to diffusion rates, as the density of a solvent increases, the diffusion rate increases. a) True b) False

During photosynthesis,P680 charges a cellular battery known as NAPD. a) True b) False