BIOL 1F90 Lecture Notes - Lecture 5: Chemical Polarity, Turgor Pressure, Red Blood Cell

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9 Mar 2018

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Which of these molecules contains a polar covalent bond: h2, o2, ch3ch2ch3, h2o, ch4. Q 0. 9% nacl solution is isotonic to red blood cells. If a red blood cell is placed in 4% Nacl, what will occur: cell lysis, turgor pressure, crenation, plasmolysis, nothing. Amino acid residues exposed to the interior of the aquaporin channel are most likely: polar, nonpolar, small, hydrophobic, large. Movement of water across membranes in response to solute concentration change. In a hypertonic environment, the cells will lose water to the environment and shrink. In animal cells this process is known as crenation. In plants and algae it is called plasmolysis. In a hypotonic environment, the cells will take up water. Animal cells will swell up and may lyse. Cell wall of plant cells prevents major expansion. The internal water pressure generated in plant cells as the cell membrane presses on the cell wall is known as turgor pressure.

Related Questions

Red blood cells in an isotonic salt solution What would happenif red blood cells in an isotonic NaCl solution were diluted withpure water by a factor of five?

The cells would lose water and shrink.

The cells would swell and lyse (burst).

The cells would take up water, but the cell wall would preventbursting.

The cells would pump water out of the cell.

scarletdeer319

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.

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

BIOL 1F90 Lecture Notes - Lecture 5: Chemical Polarity, Turgor Pressure, Red Blood Cell

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