BIO SCI 93 Study Guide - Midterm Guide: Facilitated Diffusion, Passive Transport, Aquaporin

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stutiagrawal

21 Apr 2020

School

UC-Irvine

Department

Biological Sciences

Course

BIO SCI 93

Professor

Jorge Busciglio Kim Green Marcelo A Wood

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BIO SCI 93 Full Course Notes

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Tonicity relates to the ability of a solution to cause a cell to lose or gain water. Which of these processes requires energy to proceed: active transport, aquaporins, passive transport, channel protein. Facilitated diffusion: transport across a selectively permeable membrane can occur with or without the input of energy. Which of these processes does/do not require energy to proceed: active transport, proton pump. Facilitated diffusion: vesicular transport, c and d. The plasma membrane is a selectively permeable barrier that separates the extracellular space form the cytoplasm. Which of these molecules can pass directly through the lipid bilayer: nonpolar molecules, small hydrocarbons, oxygen, hydrophobic molecules, all of the above, the plasma membrane is closely described by a fluid mosaic model. Which of the following statements is/are true about the na/k pump: maintains high extracellular potassium and sodium, in each cycle, moves two sodium ions and three potassium ions, is phosphorylated and dephosphorylated, all of the above.

Related Questions

The option to feel out every sentense are: cell wall, increasing, chloroplasts, hypotonic, hypertonic, cytokinesis, plasmolysis, and decreasing

In an isotonic solution in animal cells, there is no net movement of water.

An animal cell in a ____________ solution may lyse or burst open.

An animal cell in a ____________ solution will shrivel up or crenate.

Plant cells react differently to osmotic changes due to the presence of the ____________ , a structure that animal cells lack.

For a plant cell in a ____________ solution, vacuoles fill with water, ____________ turgor pressure.

For a plant cell in a ____________ solution, the cytoplasm shrinks causing ____________ and ____________ turgor pressure.

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The opcions to fell our the following sentenses are: mitochondria, chloroplasts, ATP, passive, against, carrier, small, receptor, large, with, and active

In contrast to ____________ transport, ____________ transport requires energy for molecules to pass through cell membranes.

This might occur when molecules need to move ____________ a concentration gradient, as is the case of thyroid cells where iodine collects in ____________ concentrations.

This type of transport requires both chemical energy in the form of ____________ and ____________ proteins.

Cells involved in this type of transport often have high numbers of ____________ in order to facilitate this process.

Please keep it answer between 3to7 sentences. or keep it short.

1. Describe how the âfluid mosaicâ structural model of the cell membrane allows it to perform its function of being âselectively permeableâ.

2. For two of the following types of transport, describe the process itself, how the structure of the cell membrane functions in the transport of molecules, and the significance of each type to a cell. â¢ Facilitated diffusion â¢ Active transport â¢ Endo/Exocytosis

3. Describe the significance of hypotonic, hypertonic, and isotonic solutions to both animal and plant cells.

4. Energy transfers occur in all cellular activities. Explain this process and the role of ATP in cotransport.

5. Discuss the induced fit model of enzyme-substrate interaction. Include how substrate concentration, temperature changes, and competitive inhibition may affect that interaction. 6. Discuss the similarities and differences between the biochemical pathways of aerobic respiration and photosynthesis.

7. Membranes are important structural components of cells. Describe the role of membranes in the synthesis of ATP in both cellular respiration and photosynthesis.

some questions have sub category questions within them. thank you

1: what factors affect that rate of diffusion?

2: what conditions would produce the fastest rate of diffusion?

3: state in which direction water will flow ( into the bag, out of the bag, or in and out at an equal rate ). then justify your answeres using terms hypotonic, hepertonic and isotonic, sub category questions too please.

A: beaker contains 40 % sucrose solution; bag contains 40% sucrose solution

B: beaker contains 25% sucrose solution; bag contains 35% sucrose solution

C: beaker contains 40% sucrose solution; bag contains plain water

D: beaker contains 21% sucrose solution; bag contains 20% sucrose solution

4:? make three drawings on a seprate paper to showing the directions of water movement in the following conditions of tonicity /

a: the solution in the beaker is hypotonic to the solution in the bag

B: the solution in the beaker is herpertonic to the soltuion in the bag

C: the solution in the beaker is isotonic to the solution in the bag

5:?what is the tonicity of a surrounding solution whihc causes plant cells to undergo plasmolysis? Describe the appearance of these cells

?6: what happens to red blood cells when they are placed in a hypertonic solution?

7: How do the red blood cells appear compared to normal red blood cells?

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BIO SCI 93 Study Guide - Midterm Guide: Facilitated Diffusion, Passive Transport, Aquaporin

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