Test
Parts of a Cell Membrane
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Preguntas del test (41)
1In the diagram below, which letter points to a structure that helps with cell attachment, signaling, and recognition of substances?
- AStructure E
- BStructure D
- CStructure I
- DStructure A
- ENome of these
2Which letter is pointing to a protein?
- AStructure C
- BStructure F
- CStructure E
- DStructure D
- EStructure H
3Which letter points to a part that is polar and hydrophilic?
- AStructure E
- BStructure J
- CStructure D
- DStructure H
4What is the composition of the nucleus of an atom?
- AIons and Electrons
- BElectrons and Protons
- CProtons and Nuetrons
- DNeutrons and Electrons
5The 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?
- AThe ion is being transported against the concentration gradient.
- BThe ion has more kinetic energy than the surrounding molecules.
- CThe ion is a waste product that is digested by the cell membrane.
- DThe ion is too large to pass through the cell membrane by diffusion.
6Which of these statements correctly describes an example of how monomers combine and create macromolecules?
- AAmino Acids combine and make proteins.
- BNucleic acids combine and make starch.
- CGlucose molecules combine and make nucleic acids.
- DProteins combine and make amino acids.
7Cell membranes allow some molecules to move freely across membranes while others are restricted. Which term best describes this capability of a cell membrane?
- AImpervious
- BPermeable
- CSemi-permiable
- DDiffusion
- ESynthesis
8In the diagram shown here, which of these would best explain why the cells shrunk?
- AThey are in a hypotonic solution.
- BThey are in a hypertonic solution.
- CThey are infected with a bacterium.
- DThey are infected with virus.
9What property of water allows it to dissolve many different substances?
- AIt is a polar molecule.
- BIt contains hydrogen molecules.
- CIt has a high specific heat.
- DIt has low density.
10Active transport is a term for the movement of molecules from...
- Aan area of low concentration to high concentration.
- Bareas of equal concentration back and forth.
- Can area of high concentration to low concentration.
- Da negative charge to a positive charge.
11Water will move out of a cell when the cell is placed into a solution that is...
- Ahypotonic
- Bisotonic
- Chypertonic
- Dpure water
12Molecules, such as water, oxygen, and carbon dioxide, move across the cell membrane by...
- Afacilitated diffusion.
- Bsimple diffusion.
- Cendocytosis and exocytosis
- Dprotein pumps
13When energy is not required to move molecules across a cell membrane, the process is called...
- Aactive transport.
- Bpassive transport.
- Cconcentration gradient.
- Disolation of solutes.
14The major difference(s) between active and passive transport is...
- Aactive transport involves the use of proteins while passive is not.
- Bactive transport is faster than passive transport.
- Cactive transport requires energy while passive does not.
- Dactive transport most often moves against the concentration gradient.
- Eboth of these: active transport requires energy while passive does not AND active transport most often moves against the concentration gradient.
15Which part of the cell membrane is hydrophobic?
- Aproteins
- Bcholesterol
- Cphosphate heads
- Dlipid tails
16Why do cells not dissolve in water?
- ABecause the proteins in the cell membrane have covalent bonds between amino acids.
- BBecause the phosphate heads of the cell membrane are polar and attract to water.
- CBecause the fatty acid tails of the cell membrane phospholipids are nonpolar.
- DBecause the cytoplasm has a slightly negative charge and prevents water from entering the cell.
17The structure of the cell membrane is composed of a bilayer consisting of...
- Aphosphates and lipids.
- Bcarboxyl and amino acids.
- Cphosphates and proteins.
- Dproteins and lipids.
18All cells, prokaryotic and eukaryotic, have a few common features. Which of the following is found in both cells?
- ARibosomes
- BNuclear Membrane
- CNucleus
- DRER
- EBoth ribosomes and nucleus
19Which part of an atom has the least mass?
- ANucleus
- BNuetron
- CElectron
- DProton
- EThey all have relatively the same mass.
20If an atom has 8 protons and 9 electrons, then the atom is...
- Aa cation.
- Ban anion.
- Cneutral.
- Dpolar.
21Which part of the cell is responsible for cell growth and is responsible for metabolism?
- Achloroplasts
- Bcytoplasm
- Cribosomes
- Dnucleolus
- Emitochondria
22Each beaker shown here contains a cell in a solution. (The white oval shape = cell.) Which of these beakers and cell would be considered isotonic?
- ABeaker 1
- BBeaker 2
- CBeaker 3
- DBeaker 4
- EBeakers 2 and 4
23In beaker number 3, what would happen to the water?
- AIt would move into the cell by osmosis.
- BIt would move out of the cell by osmosis.
- CIt would move into the cell by diffusion.
- DIt would move out of the cell by diffusion.
24What type of molecule help hold the lipid tails together in the cell membrane?
- AA Carbohydrate
- BA Protein
- CA Cholesterol
- DA Carboxyl group
25What type of bond is most often found between carbon and other elements in organic compounds?
- Aionic
- Bcovalent
- Chydrogen
- Dpolar
26The high specific heat of water provides what function in living things?
- AIt helps cool the body.
- BIt helps the environment stay warmer.
- CIt allows molecules to dissolve.
- DIt helps it flow through plants.
27The chemical structure of starch is shown here. Based on this diagram, starch is a...
- Amonomer.
- Bpolymer.
- Cnucleotide.
- Dpolypeptide.
- Edisaccharide.
28The 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...
- Amonomers of each other.
- Bpolymers of one another.
- Cisotopes.
- Disomers.
29Which of the following is not part of the cell membrane?
- ACarbohydrates
- BLipids
- CProteins
- DNucleic Acids
- EAll of these are a part of the cell membrane.
30If 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?
- AThe sugar will move into the cell with the help of ATP by diffusion.
- BThe sugar will move out the cell without the help of ATP by diffusion.
- CThe sugar will move into the cell without the help of ATP by diffusion.
- DThe sugar will move out the cell with the help of ATP by diffusion.
31Which structure collects and sends molecules to leave the cell by osmosis?
- AMitochondria
- BRibosomes
- CCell membrane
- DGolgi Bodies
32Marta 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?
- ANumber of goldfish
- BWater Temperature
- CNumber of gill movements
- DObservation time
33What process moves a small, neutral atom through the cell membrane?
- ADirect transfer through phospholipids.
- BExocytosis
- CActive Transport
- DFacilitated Diffusion
- EOsmosis
34Which of these moves a large amount of a liquid substance into a cell?
- AExocytosis
- BOsmosis
- CPhagocytosis
- DPinocytosis
35A cell placed in a solution. After 24 hours, its volume has increased in size 3%. In what type of solution was it placed?
- Ahypotonic
- Bhypertonic
- Cisotonic
- Dcould be hypotonic or hypertonic
36Cations moving through a protein in the cell membrane are entering the cell through what process?
- Aactive transport
- Bfacilitated diffusion
- Cosmosis
- Dexocytosis
37A cell has 5% glucose and the solution surrounding it is 10% glucose, making the cell [blank_start]hypotonic[blank_end] compared to the solution.
- Ahypotonic
38If a cell filled with 5% glucose is in a solution with 10% glucose, the glucose will move [blank_start]into[blank_end] the cell by [blank_start]diffusion[blank_end], and the water will move [blank_start]out of[blank_end] the cell by [blank_start]diffusion[blank_end].
- Ainto
- Bout of
- Cdiffusion
- Dosmosis
- Einto
- Fout of
- Gdiffusion
- Hosmosis
39In the diagram of a cell membrane, which structure would be an ion channel?
- AStructure A
- BStructure B
- CStructure C and F
- DStructure E
- EStructure G
40Which structure would be a lipid?
- AStructure B
- BStructure G
- CStructure E
- DStructure F
- ENone of these
41The use of vesicles to transport substances across the cell membrane out of the cell is called...
- Afacilitated diffusion.
- Ba protein pump.
- Cendocytosis.
- Dexocytosis.
Información
- Descripción
- Parts of a cell membrane along with a little review from parts of cell, macromolecules, and atoms.
- Autor
- Selam H
- Idioma
- English
- Visitas
- 2.815
- Etiquetas
- Valoración
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