BIOL 102 Study Guide - Quiz Guide: Leaf, Xylem, Phloem

33 views3 pages

coppermosquito74

22 Dec 2019

School

Department

Course

Professor

For unlimited access to Study Guides, a Grade+ subscription is required.

Document Summary

Note: transpiration: movement of water in the xylem vessels, translocation: movement of sugars and food nutrients in phloem vessels. What is the difference between xylem and phloem in terms of what they are made out of: xylem is made up of hollowed-out dead cells, phloem is made up of living cells. Mesophyll cells are where water is used in metabolic reactions such as photosynthesis. Properties of root hair cells: adapted for efficient water uptake because they have a large surface area, the large surface area increases the rate of osmosis into the root. The rate of ion uptake by active transport is also increased: root hair cells have a thin wall, this shortens the distance for diffusion. Transpiration: in this process, we have the loss of water vapour from the mesophyll cell surface. Water vapour exits the plant via the stomata. Water helps maintain the plant structure by keeping cells turgid.

Related Questions

1. Which cell component shapes plant cells into their characteristic square?

central vacuole

plasma membrane

cell wall

2. ________ arise from ground tissue.

Bark

Stems

Root tips

3. In plants, water moves from areas of ________ water potential to areas of ________ water potential in an attempt to equilibrate.

lower; higher

shallower; deeper

higher; lower

4. The main driver of ________ is transpiration.

water movement through xylem

water movement through phloem

solute movement through xylem

5. ________ is the movement of a plant in response to constant directional pressure.

Thigmotropism

Thigmonastism

Thigmomorphogenesis

lilacdolphin181

1. Microscopic cells or particles suspended in water exhibit atype of movement known as

_______________________________________________________________________.

2. The yeast cells in suspension appear to jiggle back and forthbecause they are bombarded

by the ______________ energy of water molecules which are inconstant, rapid, random

motion.

3. The movement of the molecules of a gas, liquid, or solid froma region of higher

concentration of that substance to a region of lesserconcentration is termed

____________________________.

4. What are 2 factors that influence the rate of diffusion?

5. ______________ is the diffusion of a solvent across aselectively permeable membrane.

6. In ______________________, water moves out of a plant cell byosmosis causing the

protoplast to shrivel up.

7. In __________________, water moves into an animal cell byosmosis causing the cell to

swell and burst.

8. The process of ________________ can be used in treatingkidney patients to separate

urea (small molecules) from proteins (large molecules) using aselectively permeable

membrane.

9. Which type of solution (hypotonic or hypertonic) is formed inthe soil environment

around root cells when a lawn is over fertilized? Would the rootcells lose or gain water?

10. Why is it common practice to place lettuce and celery inwater before serving them?

orchidbear657

Read the following scenarios and indicate which of the following processes they describe.

11. Sodium molecules move randomly around a solution of sodium chloride in water, frequently colliding with other sodium ions and chloride ions. secondary active transport diffusion osmosis facilitated diffusion primary active transport

12. Sodium ions (Na+) move through sodium channels in a synthetic membrane. primary active transport secondary active transport facilitated diffusion osmosis

13. Water molecules move into the cytosol of a cell placed in a hypotonic solution. primary active transport secondary active transport facilitated diffusion osmosis

14. Water molecules move into the cytosol of a cell placed in pure water. facilitated diffusion osmosis secondary active transport primary active transport

15. Water molecules move out of a cell placed in a hypertonic solution. facilitated diffusion primary active transport secondary active transport osmosis

16. The action of sodium-potassium pumps moves sodium ions (Na+) out of a cell and potassium ions (K+) into a cell. facilitated diffusion secondary active transport osmosis primary active transport

17. Glucose molecules move into cells lining the intestine against their concentration gradient driven by the movement of sodium ions (Na+) into the cells down their concentration gradient. osmosis secondary active transport primary active transport facilitated diffusion

18. A beaker of water is separated by a selectively permeable membrane that allows the passage of water but not ions. A solution of 4% sodium chloride (NaCl) is placed on one side of the membrane and pure water is placed on the other side of the membrane. The solutions are allowed to equilibrate. At this point, which process is going on? facilitated diffusion osmosis secondary active transport primary active transport

amaranthelk944

BIOL 102 Study Guide - Quiz Guide: Leaf, Xylem, Phloem

Document Summary

Get access

Related Documents

BIOL 102 Lecture Notes - Lecture 6: Peripheral Membrane Protein, Transmission Electron Microscopy, Lipid Bilayer

01:119:116 Study Guide - Midterm Guide: Meristem, Vascular Cambium, Phloem

BIO 2137 Lecture Notes - Lecture 15: Facilitated Diffusion, Root Hair, Xylem

Related Questions