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Quiz von Foster Parnell, aktualisiert more than 1 year ago
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Erstellt von Foster Parnell
vor etwa 9 Jahre
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Frage 1
Frage
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
Antworten
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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
Frage 2
Frage
The Fluid Mosaic Model describes the cell membrane as being what?
Antworten
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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
Frage 3
Frage
Three types of of proteins on the cell membrane are peripheral proteins, Chained proteins, and transmembrane proteins
Antworten
- True
- False
Frage 4
Frage
Which type of transmembrane protein provides open passageways through the membrane for certain hydrophilic substances such as polar and charged molecules?
Antworten
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Aquaporins
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Channel proteins
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Ion channels
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Porins
Frage 5
Frage
Ion Channels....
Antworten
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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
Frage 6
Frage
Porins are found in the plasma membrane of certain cells and dramatically increase the passage rate of H2O molecules
Antworten
- True
- False
Frage 7
Frage
Carrier proteins bind to specific molecules, which changes shape and passes across into the cell E.g. glucose
Antworten
- True
- False
Frage 8
Frage
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
Antworten
- True
- False
Frage 9
Frage
The function of Glycoproteins are what?
Antworten
-
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
Frage 10
Frage
What adds rigidity to the membrane of plant cells under normal conditions?
Antworten
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Cholesterol
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Glycocalyx
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sterols
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Porins
Frage 11
Frage
The rough ER is responsible for creating glycoproteins, while the smooth ER is used for creating lipids and hormones.
Antworten
- True
- False
Frage 12
Frage
What is the gel like substance between organelles that makes up the streaming movement within the cell
Antworten
-
Cystol
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Extracellular fluid
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Cytoplasm
-
Water
Frage 13
Frage
What two subunits make up Ribosomes in prokaryotes and what are they made of?
Antworten
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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
Frage 14
Frage
The Golgi apparatus is responsible for transport of various substances in vesicles
Antworten
- True
- False
Frage 15
Frage
Peroxisomes: break down waste such as nutrients/bacteria/cell debris
Antworten
- True
- False
Frage 16
Frage
What are microtubules made of?
Antworten
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actin
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tubulin
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microfilaments
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structural proteins
Frage 17
Frage
What organizes microtubules in flagella and cillia
Antworten
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MTOCs
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MTOAs
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MTCs
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Centrisomes
Frage 18
Frage
Which of these provides support for maintaining cell shape
Antworten
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Microtubule
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Microfilaments
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Intermediate filaments
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MTOCs
Frage 19
Frage
Contractile vacuoles are only found in prokaryotes
Antworten
- True
- False
Frage 20
Frage
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
Antworten
- True
- False
Frage 21
Frage
Cell Walls are only found in plants and bacteria, and are made up of cellulose, chitin, peptidoglycans, and polysaccharides.
Antworten
- True
- False
Frage 22
Frage
Which of the following is an Anchoring Junction?
Antworten
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desmosomes
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Gap junctions
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Plasmodesmata
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Tight junctions
Frage 23
Frage
Tight junctions do what?
Antworten
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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
Frage 24
Frage
Check all of the following that Prokaryotes don't have
Antworten
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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
Frage 25
Frage
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
Antworten
- True
- False
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