What is the difference between rough and smooth ER ?

Rough has ribosomes, smooth does not.

Plants have rough ER, animals have smooth ER.

What type of injuries the Doctors treat.

Select all that are true of a buffer

It can be a weak acid or a weak base

It can be a strong acid or a strong base

As shown above, blood pH levels must be maintained in a small range to avoid sickness or death. Exercise, bacteria, and cell metabolism can all create excess acids or bases in the body. How does our body counteract this constant change in acids and bases?

There is a buffer system in the blood which absorbs excess acids or bases.

Our blood cells can secrete H+ ions, causing the pH to increase

Our blood carries the extra acid and bases to our kidneys where we excrete them through urination.

When we sweat we are releasing the extra acids and bases.

If you mix hydrochloric acid (HCl) and sodium hydroxide (NaOH) together the pH of the resulting solution will:

be between the pH of the hydrochloric acid (HCl) and sodium hydroxide (NaOH)

be the same as the hydrochloric acid

Which of the following are functions of lipids? Select TWO correct answer choices.

component in biological membranes (phospholipid)

speed up rate of reactions (protein)

storage of genetic material (DNA)

break down old or worn out cells (enzyme)

Side A contains a 3% sucrose solution, and side B contains a 10% sucrose solution. The membrane separating the sides is permeable to water but impermeable to sucrose. Which of the following best describes the movement of water in this system?

The net (total) movement of water is from side A to side B.

Water only moves from side A to side B.

The net (total) movement of water is from side B to side A.

Water only moves from side B to side A.

Molecules which cross a cell membrane by facilitated diffusion:

require the aid of transport proteins

require an expenditure of energy

move from an area of low concentration to an area of high concentration

do so much more slowly than those crossing by simple diffusion.

How does particle size affect a molecule's transport across a cell membrane?

It is easier for small molecules to diffuse across the cell membrane.

It is easier for large molecules to diffuse across the cell membrane

Small molecules cannot cross the membrane without a transport protein.

Particle size does not affect a molecule's transport speed across the cell membrane.

Osmosis, the diffusion of water across a membrane, is caused by:

differences in water concentrations across a membrane

the active transport of water by protein pumps.

random movement of solute molecules until equilibrium is reached

the presence of dissolved carbon dioxide in the cell

Unit 2 Review Biology

9th - 12th Grade

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38 Qs

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Unit 2 Review Biology

Quiz

•

Biology

•

9th - 12th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-LS1-2, HS-LS1-3, MS-LS1-6

Standards-aligned

Michelle Brenner

Used 89+ times

FREE Resource

38 questions

Show all answers

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What is the function of a chloroplast?

makes proteins for animal cells

allows materials in and out of the cell

provides structure and support

absorbs sunlight for photosynthesis

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-6

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

This organelle is involved in transporting things around and out of the cell

vacuole

ribosome

mitochondrion

Golgi apparatus

Tags

NGSS.MS-LS1-2

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Where are proteins made?

Golgi body

Mitoichondria

Chromosomes

Ribosomes

Tags

NGSS.MS-LS1-2

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

This organelle takes food and turns it into ENERGY for plant and animal cells.

Chloroplast

Mitochondria

Lysosome

Ribosome

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

A rigid layer that lies outside the cell's membrane is...

Cytoskeleton

Cilia

Cell Wall

Flagella

Tags

NGSS.MS-LS1-2

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What is the difference between a prokaryotic cell and a eukaryotic cell?

Prokaryotes do not have a nucleus or membrane-bound organelles, but a eukaryotic cell does

Eukaryotic cells do not have a nucleus or membrane-bound organelles, but prokaryotes do

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What does a plant cell have that an animal cell doesn't have?

Cell Membrane and Cell Wall

Cell Wall and Mitochondria

Cell Wall and Nucleus

Cell Wall and Chloroplast

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Unit 2 Review Biology

38 questions

What is the function of a chloroplast?

This organelle is involved in transporting things around and out of the cell

Where are proteins made?

This organelle takes food and turns it into ENERGY for plant and animal cells.

A rigid layer that lies outside the cell's membrane is...

What is the difference between a prokaryotic cell and a eukaryotic cell?

What does a plant cell have that an animal cell doesn't have?

This organelle controls what goes in and out of plant and animal cells.

The _____________ holds the DNA, and controls the functions of eukaryotic cells.

What is the difference between rough and smooth ER?

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