BIOL 1202 Chapter : Chpt 36

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azuremammoth471

15 Mar 2019

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Plasma membrane controls movement of solutes into and out of the cell. Transport proteins: integral membrane proteins that carry out transport. Transport of water and solutes by individual cells. Short-distance transport of substances from cell to cell at the level of tissues and organs. Long-distance transport (bulk ow) within xylem and phloem. Chapter 36: resource acquisition and transport in vascular plants. Transport in vascular plants occurs on three scales. Osmosis: the diffusion of water across a selectively permeable membrane. Concept 36. 2: transport occurs by short-distance diffusion or active transport or by long- distance bulk ow. Transport of many solutes driven by proton gradients. Cotransport: transport proteins couple passage of one solute with passage of another. Solute potential: proportional to concentration of dissolved molecutes. Create a h+ gradient that is a form of potential energy. Helps produce a voltage known as a membrane potential.

Related Questions

1. In order for blood to always flow unidirectionally through a closed circulatory system, the ________.

a. capillaries must have a thick endothelium

b. arteries must be elastic

c.pressure in all vessels must be equal

d.blood vessels farthest from the heart must have valves

2. Which one of the following does not correctly match the form with its function?

a. roots: water and minerals in the soil are absorbed

b. phloem sap: products of photosynthesis are transported from roots to shoots

c. leaves: sugars are produced by photosynthesis

d. xylem sap: water and minerals are transported from shoots to roots

3. If you place flaccid plant cells in pure water, water ________ into cell because it has ________.

a. does not enter the cell; solutes and low water potential

b. enter the cell; solutes and high water potential

c. enter the cell; solutes and low water potential

d. does not enter the cell; solutes and high water potential

blackdog532

1,Match the descriptions to the type of transport.

- A. B. C.	Water enters a cell because it is hypertonic compared to the extracellular environment, increasing its turgor pressure
- A. B. C.	Water enters guard cells because the guard cells are hypertonic compared to the surrounding cells
- A. B. C.	Potassium ions are pumped into guard cells
- A. B. C.	The motor cells of a Venus fly trap are hypotonic compared to surrounding cells, causing water to leave the motor cells
- A. B. C.	Sugar is loaded into the phloem

A.	Both active and passive transport
B.	Passive Transport
C.	Active transport

2,Describe what is wrong with the following statement and explain why:

All prokaryotic and eukaryotic cells contain plasma membrane, nucleus, ribosomes, organelles, cytoplasm, and cell walls.

What is short-distance transport?

	a,	The movement of solutes from a region of low concentration to a region of high concentration
		b,The movement of water, nutrients, and other substances between cells
c,		The movement of substances from a region of high concentration to a region of low concentration
d,		The movement of water across a semipermeable membrane from a region of low solute concentration to a region of high solute concentration.

What terms describe the movement of water across a semipermeable membrane from a region of high water concentration towards a region of low water concentration (and high solute concentration.)

What is found in the proptoplasm?

Cell wall, cytoplasm, plasma membrane, nucleus, and other cell organelles

Plasmodesmata, cell wall, and plasma membrane

Cell wall, cytoplasm, and plasma membrane

Cytoplasm, nucleus, and other cell organelles

The channels that allow nutrients and protoplasm to pass between plant cells are called _________________.

What happens when a plant cell is placed in a hypotonic solution?

Water will enter the plant cell and the plasma membrane will swell and cell lysis will occur

Water will leave the plant cell and the plasma membrane will pull away from the cell and plasmolysis will occur

Water will enter the plant cell and the plasma membrane will swell and push against the cell wall

Water will leave the plant cell and the plant cell will lose turgor pressure, causing the plant to wilt

________________ transport uses cellular energy.

What molecules make plasma cell membranes hydrophilic on the outside and hydrophobic on the inside?

What type of cells do plants have?

		Bacterial
		Archaeic
		Eukaryotic
		Prokaryotic

11. As energy flows through the food web in an ecosystem, the amount of energy that is transferred from one trophic level to the next trophic level increases. stays the same. decreases. may increase or decrease, depending upon the system.

12. Autotrophs are organisms that obtain energy by breaking down tissues of organisms that have died. harness external energy sources to produce complex chemical compounds. depend directly on primary producers for their energy and nutrients. eat other autotrophs to obtain energy.

13. Which of the following gives the correct order for energy flow through an ecosystem? primary producers â secondary producers â tertiary producers primary consumers â primary producers â secondary producers secondary consumers â primary consumers â primary producers primary producers â primary consumers â secondary consumers

14. Which one of the following aspects of plant biology is not directly involved in maintaining an adequate supply of water for the entire plant? phloem roots xylem transpiration pull

15. Which structure(s) do most plants use to acquire the energy that they need for cellular processes? the roots the leaves the stem

BIOL 1202 Chapter : Chpt 36

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