2858764
Descrição
Quiz por Foster Parnell, atualizado more than 1 year ago
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Criado por Foster Parnell
aproximadamente 9 anos atrás
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Questão 1
Questão
The Cytoplasm consist of specialized bodies called 1. _________ suspended in a fluid matrix, the 2. __________ which consist of water and dissolved substances such as proteins and nutrients
Responda
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1. Organelles 2. phospholipid bilayer
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1. Golgi Bodies 2. Cystol
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1. Organelles 2. Cystol
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1. Organelles 2. Extracellular Fluid
Questão 2
Questão
The Fluid Mosaic Model describes the cell membrane as being what?
Responda
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1. The mosaic nature of scattered proteins within a flexible matrix of phospholipid molecules.
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2. The rigid nature of the phospholipid bilayer with a few membrane proteins to help with recognition and transportation of molecules
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3. The mosaic nature of scattered proteins within a solid matrix made of cellulose
Questão 3
Questão
Three types of of proteins on the cell membrane are peripheral proteins, Chained proteins, and transmembrane proteins
Responda
- True
- False
Questão 4
Questão
Which type of transmembrane protein provides open passageways through the membrane for certain hydrophilic substances such as polar and charged molecules?
Responda
-
Aquaporins
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Channel proteins
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Ion channels
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Porins
Questão 5
Questão
Ion Channels....
Responda
-
Use energy to transport materials across the membrane through a process called active transport. The Na+ - K+ pump
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Allows the passage of ions across the membrane. In nerve and muscle cells. This also includes gated channels which open and close in response to specific chemical or electrical stimuli to allow the passage of specific ions such as Na+ and K+
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allow passage of certain ions and small polar molecules
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Allow only large charged molecules to transfer
Questão 6
Questão
Porins are found in the plasma membrane of certain cells and dramatically increase the passage rate of H2O molecules
Responda
- True
- False
Questão 7
Questão
Carrier proteins bind to specific molecules, which changes shape and passes across into the cell E.g. glucose
Responda
- True
- False
Questão 8
Questão
The difference between adhesion proteins and receptor proteins is that adhesion proteins attach to neighboring cells and provide internal filaments and tubules for stability, while receptor proteins are used as a binding site for hormones and other trigger molecules
Responda
- True
- False
Questão 9
Questão
The function of Glycoproteins are what?
Responda
-
Used to help the ER assemble ribosomes by attaching polysaccharide groups to polypeptides
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To add rigidity to the cell membrane of animal cells under normal temperature
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A carbohydrate coat that covers the outer surface of the cell wall of some bacteria and the cell membrane of some animals. Provides adhesive capabilities, and a barrier to infections.
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used to distinguish between self and foreign cells and bacteria
Questão 10
Questão
What adds rigidity to the membrane of plant cells under normal conditions?
Responda
-
Cholesterol
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Glycocalyx
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sterols
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Porins
Questão 11
Questão
The rough ER is responsible for creating glycoproteins, while the smooth ER is used for creating lipids and hormones.
Responda
- True
- False
Questão 12
Questão
What is the gel like substance between organelles that makes up the streaming movement within the cell
Responda
-
Cystol
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Extracellular fluid
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Cytoplasm
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Water
Questão 13
Questão
What two subunits make up Ribosomes in prokaryotes and what are they made of?
Responda
-
rRNA and Protein 60S +30S
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RNA and Protein 60S+40s
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rRNA and Protein 50S + 30S
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rRNA and Protein 60S + 40S
Questão 14
Questão
The Golgi apparatus is responsible for transport of various substances in vesicles
Responda
- True
- False
Questão 15
Questão
Peroxisomes: break down waste such as nutrients/bacteria/cell debris
Responda
- True
- False
Questão 16
Questão
What are microtubules made of?
Responda
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actin
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tubulin
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microfilaments
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structural proteins
Questão 17
Questão
What organizes microtubules in flagella and cillia
Responda
-
MTOCs
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MTOAs
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MTCs
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Centrisomes
Questão 18
Questão
Which of these provides support for maintaining cell shape
Responda
-
Microtubule
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Microfilaments
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Intermediate filaments
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MTOCs
Questão 19
Questão
Contractile vacuoles are only found in prokaryotes
Responda
- True
- False
Questão 20
Questão
Storage vacuoles are used to occupy most of the plant interior, exert turgor when fully filled to maintain rigidity. They also carry of the functions of lysosomes
Responda
- True
- False
Questão 21
Questão
Cell Walls are only found in plants and bacteria, and are made up of cellulose, chitin, peptidoglycans, and polysaccharides.
Responda
- True
- False
Questão 22
Questão
Which of the following is an Anchoring Junction?
Responda
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desmosomes
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Gap junctions
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Plasmodesmata
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Tight junctions
Questão 23
Questão
Tight junctions do what?
Responda
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Produces a seal that prevents the passage of materials between cells. characteristic of cells lining the digestive tract.
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Contain narrow tunnels that allows the passage of ions and small molecules;
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Are used to send chemical and electrical signals between cells
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Provide mechanical stability and holds structures together
Questão 24
Questão
Check all of the following that Prokaryotes don't have
Responda
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Nucleus
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naked DNA
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ribosomes
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Cell walls
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Plasma membrane
Questão 25
Questão
Receptor mediated endocytosis is a type of pinocytosis that uses ligands to bind to specific dissolved molecules and fold the into the plasma membrane in vesicles
Responda
- True
- False
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