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Helen Che
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Parts of a cell membrane along with a little review from parts of cell, macromolecules, and atoms.

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Selam H
Created by Selam H over 9 years ago
Helen Che
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Parts of a Cell Membrane

Question 19 of 41 Question 1 of 41

1

In the diagram below, which letter points to a structure that helps with cell attachment, signaling, and recognition of substances?

Select one of the following:

  • Structure I

  • Structure A

  • Nome of these

  • Structure E

  • Structure D

Explanation

Question 11 of 41 Question 2 of 41

1

Which letter is pointing to a protein?

Select one of the following:

  • Structure D

  • Structure C

  • Structure H

  • Structure F

  • Structure E

Explanation

Question 26 of 41 Question 3 of 41

1

Which letter points to a part that is polar and hydrophilic?

Select one of the following:

  • Structure D

  • Structure E

  • Structure H

  • Structure J

Explanation

Question 24 of 41 Question 4 of 41

1

What is the composition of the nucleus of an atom?

Select one of the following:

  • Protons and Nuetrons

  • Electrons and Protons

  • Neutrons and Electrons

  • Ions and Electrons

Explanation

Question 36 of 41 Question 5 of 41

1

The diagram illustrates the use of energy by a nerve cell to expel a sodium ion from the inside of the cell. Which of these would best explain why ATP energy is needed to complete this function?

Select one of the following:

  • The ion is too large to pass through the cell membrane by diffusion.

  • The ion has more kinetic energy than the surrounding molecules.

  • The ion is being transported against the concentration gradient.

  • The ion is a waste product that is digested by the cell membrane.

Explanation

Question 15 of 41 Question 6 of 41

1

Which of these statements correctly describes an example of how monomers combine and create macromolecules?

Select one of the following:

  • Glucose molecules combine and make nucleic acids.

  • Amino Acids combine and make proteins.

  • Nucleic acids combine and make starch.

  • Proteins combine and make amino acids.

Explanation

Question 13 of 41 Question 7 of 41

1

Cell membranes allow some molecules to move freely across membranes while others are restricted. Which term best describes this capability of a cell membrane?

Select one of the following:

  • Semi-permiable

  • Diffusion

  • Synthesis

  • Impervious

  • Permeable

Explanation

Question 8 of 41 Question 8 of 41

1

In the diagram shown here, which of these would best explain why the cells shrunk?

Select one of the following:

  • They are in a hypertonic solution.

  • They are infected with virus.

  • They are infected with a bacterium.

  • They are in a hypotonic solution.

Explanation

Question 21 of 41 Question 9 of 41

1

What property of water allows it to dissolve many different substances?

Select one of the following:

  • It has low density.

  • It has a high specific heat.

  • It contains hydrogen molecules.

  • It is a polar molecule.

Explanation

Question 37 of 41 Question 10 of 41

1

Active transport is a term for the movement of molecules from...

Select one of the following:

  • a negative charge to a positive charge.

  • areas of equal concentration back and forth.

  • an area of low concentration to high concentration.

  • an area of high concentration to low concentration.

Explanation

Question 32 of 41 Question 11 of 41

1

Water will move out of a cell when the cell is placed into a solution that is...

Select one of the following:

  • pure water

  • hypotonic

  • hypertonic

  • isotonic

Explanation

Question 30 of 41 Question 12 of 41

1

Molecules, such as water, oxygen, and carbon dioxide, move across the cell membrane by...

Select one of the following:

  • protein pumps

  • endocytosis and exocytosis

  • facilitated diffusion.

  • simple diffusion.

Explanation

Question 27 of 41 Question 13 of 41

1

When energy is not required to move molecules across a cell membrane, the process is called...

Select one of the following:

  • concentration gradient.

  • passive transport.

  • isolation of solutes.

  • active transport.

Explanation

Question 23 of 41 Question 14 of 41

1

The major difference(s) between active and passive transport is...

Select one of the following:

  • both of these: active transport requires energy while passive does not AND active transport most often moves against the concentration gradient.

  • active transport involves the use of proteins while passive is not.

  • active transport requires energy while passive does not.

  • active transport is faster than passive transport.

  • active transport most often moves against the concentration gradient.

Explanation

Question 22 of 41 Question 15 of 41

1

Which part of the cell membrane is hydrophobic?

Select one of the following:

  • proteins

  • cholesterol

  • phosphate heads

  • lipid tails

Explanation

Question 28 of 41 Question 16 of 41

1

Why do cells not dissolve in water?

Select one of the following:

  • Because the phosphate heads of the cell membrane are polar and attract to water.

  • Because the fatty acid tails of the cell membrane phospholipids are nonpolar.

  • Because the proteins in the cell membrane have covalent bonds between amino acids.

  • Because the cytoplasm has a slightly negative charge and prevents water from entering the cell.

Explanation

Question 41 of 41 Question 17 of 41

1

The structure of the cell membrane is composed of a bilayer consisting of...

Select one of the following:

  • proteins and lipids.

  • phosphates and lipids.

  • phosphates and proteins.

  • carboxyl and amino acids.

Explanation

Question 6 of 41 Question 18 of 41

1

All cells, prokaryotic and eukaryotic, have a few common features. Which of the following is found in both cells?

Select one of the following:

  • Nuclear Membrane

  • RER

  • Ribosomes

  • Both ribosomes and nucleus

  • Nucleus

Explanation

Question 38 of 41 Question 19 of 41

1

Which part of an atom has the least mass?

Select one of the following:

  • Nuetron

  • They all have relatively the same mass.

  • Electron

  • Proton

  • Nucleus

Explanation

Question 18 of 41 Question 20 of 41

1

If an atom has 8 protons and 9 electrons, then the atom is...

Select one of the following:

  • neutral.

  • an anion.

  • a cation.

  • polar.

Explanation

Question 20 of 41 Question 21 of 41

1

Which part of the cell is responsible for cell growth and is responsible for metabolism?

Select one of the following:

  • ribosomes

  • mitochondria

  • cytoplasm

  • chloroplasts

  • nucleolus

Explanation

Question 9 of 41 Question 22 of 41

1

Each beaker shown here contains a cell in a solution. (The white oval shape = cell.) Which of these beakers and cell would be considered isotonic?

Select one of the following:

  • Beaker 4

  • Beakers 2 and 4

  • Beaker 2

  • Beaker 3

  • Beaker 1

Explanation

Question 10 of 41 Question 23 of 41

1

In beaker number 3, what would happen to the water?

Select one of the following:

  • It would move into the cell by osmosis.

  • It would move into the cell by diffusion.

  • It would move out of the cell by osmosis.

  • It would move out of the cell by diffusion.

Explanation

Question 33 of 41 Question 24 of 41

1

What type of molecule help hold the lipid tails together in the cell membrane?

Select one of the following:

  • A Carbohydrate

  • A Carboxyl group

  • A Cholesterol

  • A Protein

Explanation

Question 35 of 41 Question 25 of 41

1

What type of bond is most often found between carbon and other elements in organic compounds?

Select one of the following:

  • ionic

  • polar

  • covalent

  • hydrogen

Explanation

Question 16 of 41 Question 26 of 41

1

The high specific heat of water provides what function in living things?

Select one of the following:

  • It allows molecules to dissolve.

  • It helps the environment stay warmer.

  • It helps it flow through plants.

  • It helps cool the body.

Explanation

Question 39 of 41 Question 27 of 41

1

The chemical structure of starch is shown here. Based on this diagram, starch is a...

Select one of the following:

  • monomer.

  • disaccharide.

  • polymer.

  • nucleotide.

  • polypeptide.

Explanation

Question 14 of 41 Question 28 of 41

1

The chemical formula for glucose and fructose are C6H12O6. The structural for each of these molecules are shown. Based on the information given, glucose and fructose would be considered...

Select one of the following:

  • isotopes.

  • monomers of each other.

  • isomers.

  • polymers of one another.

Explanation

Question 3 of 41 Question 29 of 41

1

Which of the following is not part of the cell membrane?

Select one of the following:

  • Lipids

  • Carbohydrates

  • All of these are a part of the cell membrane.

  • Proteins

  • Nucleic Acids

Explanation

Question 29 of 41 Question 30 of 41

1

If the concentration of the solute of sugar is 1% outside of the cell and 3% inside of the cell, which of the following would occur by diffusion?

Select one of the following:

  • The sugar will move out the cell with the help of ATP by diffusion.

  • The sugar will move into the cell without the help of ATP by diffusion.

  • The sugar will move into the cell with the help of ATP by diffusion.

  • The sugar will move out the cell without the help of ATP by diffusion.

Explanation

Question 2 of 41 Question 31 of 41

1

Which structure collects and sends molecules to leave the cell by osmosis?

Select one of the following:

  • Golgi Bodies

  • Ribosomes

  • Mitochondria

  • Cell membrane

Explanation

Question 7 of 41 Question 32 of 41

1

Marta investigates how water temperature affects the breathing rate of five goldfish. She records the water temperature and counts the number of gill movements of each fish for one minute. Marta slowly raises the water temperature 2 degrees Celsius and then repeats her observations. What is the independent variable in this investigation?

Select one of the following:

  • Number of goldfish

  • Water Temperature

  • Observation time

  • Number of gill movements

Explanation

Question 5 of 41 Question 33 of 41

1

What process moves a small, neutral atom through the cell membrane?

Select one of the following:

  • Active Transport

  • Facilitated Diffusion

  • Osmosis

  • Exocytosis

  • Direct transfer through phospholipids.

Explanation

Question 31 of 41 Question 34 of 41

1

Which of these moves a large amount of a liquid substance into a cell?

Select one of the following:

  • Pinocytosis

  • Phagocytosis

  • Exocytosis

  • Osmosis

Explanation

Question 34 of 41 Question 35 of 41

1

A cell placed in a solution. After 24 hours, its volume has increased in size 3%. In what type of solution was it placed?

Select one of the following:

  • hypertonic

  • isotonic

  • hypotonic

  • could be hypotonic or hypertonic

Explanation

Question 4 of 41 Question 36 of 41

1

Cations moving through a protein in the cell membrane are entering the cell through what process?

Select one of the following:

  • facilitated diffusion

  • exocytosis

  • osmosis

  • active transport

Explanation

Question 1 of 41 Question 37 of 41

1

Fill the blank space to complete the text.

A cell has 5% glucose and the solution surrounding it is 10% glucose, making the cell compared to the solution.

Explanation

Question 40 of 41 Question 38 of 41

1

Select from the dropdown lists to complete the text.

If a cell filled with 5% glucose is in a solution with 10% glucose, the glucose will move ( into, out of ) the cell by ( diffusion, osmosis ), and the water will move ( into, out of ) the cell by ( diffusion, osmosis ).

Explanation

Question 17 of 41 Question 39 of 41

1

In the diagram of a cell membrane, which structure would be an ion channel?

Select one of the following:

  • Structure C and F

  • Structure E

  • Structure A

  • Structure G

  • Structure B

Explanation

Question 25 of 41 Question 40 of 41

1

Which structure would be a lipid?

Select one of the following:

  • Structure B

  • None of these

  • Structure G

  • Structure E

  • Structure F

Explanation

Question 12 of 41 Question 41 of 41

1

The use of vesicles to transport substances across the cell membrane out of the cell is called...

Select one of the following:

  • facilitated diffusion.

  • exocytosis.

  • a protein pump.

  • endocytosis.

Explanation

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