Which of the following can be found attached to the mosaic cell membrane? I. GLUT1 II. cAMP III. Glycoproteins IV. Lipoproteins V. Integral proteins
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Which of the following can be found attached to the mosaic cell membrane?
I. |
GLUT1 |
|
II. |
cAMP |
|
III. |
Glycoproteins |
|
IV. |
Lipoproteins |
|
V. |
Integral proteins |
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- Glycolipids in the plasma membrane are located at: 1.Inner leaflet of the plasma membrane 2.The outer leaflet of the plasma membrane 3.Evenly distributed in the inner and outer leaflets 4.It varies according to cell types2) Explain how the following cell transport systems work moving materials around inside the cell and other functions. Focus on structure and function, and Include how energy is used to accomplish these movements. A)Tubulin/Kinesin B)Actin/MyosinList and describe the three main types of cytoskeleton. If you wanted to do immunocytochemistry to specifically stain each type of cytoskeleton, what is a protein that could be used for each cytoskeletal type (in other words, what is a unique protein for each cytoskeletal type)? What are three types of actin structures? Describe the involvement of actin structures in cell migration. How is the growth and shrinking of microtubules regulated? Then describe the roles of microtubules in: chromosomal separation during mitosis and the movement of organelles and vesicles within a cell. Describe a possible mechanism on how signaling pathways might impact the cytoskeleton, so that cell migration could be regulated in a localized manner within a multicellular organism. (hint: think about the possible transcriptional regulation of the G-protein regulators) What are 2 main challenges of protein targeting? Then describe one way these challenges are overcome during signal-based targeting and one way…
- i. Why are carbon, nitrogen, oxygen, and hydrogen the most abundant elements in living matter and, therefore, considered macronutrients? ii. Explain the Fluid Mosaic membrane model of plasma membrane structure. iii. What is the difference between simple diffusion, facilitated diffusion, and active transport? :=Which of the follwoings represent the correct pathway of protein secretion? O Nucleus> RER > Transition vesicle > TGN > secretory vesicle > Exocytosis O Nucleus> RER > secretory vesicle > Golgi > transition vesicle > Exocytosis O Nucleus> RER > Transition vesicle > CGN > secretory vesicle > Exocytosis Nucleus> SER > Transition vesicle > Golgi > secretory vesilde > Exocytosis Ibron University Peport Abuse!FtsZ proteins direct the formation of a ________ that will eventually form the new cell walls of the daughter cells. a. contractile ring b. cell plate c. cytoskeleton d. septum
- Some scientists claim that prokaryotes like bacteria have membrane bound organelles, like chromatophores, anammoxosomes and magnetosomes. What really is the truth because it is widely known that prokaryotes do not have membrane bound organelles. Are these claims true or merely speculative? If this is true, what is the physiological basis for this?Match the following cell structures with their descriptions. 1. Fibers of the cytoskeleton that attach to chromosomes and move them during mitosis 2. Cell junctions that seal cells so tightly together that materials cannot pass between the cells Cilia Intermediate filaments 3. Cell surface appendages that contain microtubules and beat to move substances across the surface Tight junctions of a cell 4. The network of many types of protein fibers that gives shape to the cell and anchors the organelles Microtubules Desmosomes 5. Cell junctions that link the cytoskeleton of adjacent cells in order to prevent the cells from being pulled apart Microfilaments/actin filaments 6. Fibers of the cytoskeleton that allow cells such as amoebae to crawl around1) All of the following are functions of proteins within a membrane except __________. A)Maintaining the fluidity of membranes B)transport ions and other polar substances C)receptors to bond molecules outside of the cell D)helping the body to recognize its own cells 2) Which of the following organelles is not part of the endomembrane system A)mitochondria B)golgi apparatus C)lysosomes D)rough endoplasmic reticulum 3) Which cytoskeletal element is composed of actin and is involved with muscle contraction and provided strength to cells during stretching and compression? A)Microfilimants B)Intermediate filaments C)Microtubules D)Flagella
- Phagocytes are white blood cells that engulf and digest pathogens as a part of the immune response of the body. Compared to other types of cells, phagocytes are likely to have a higher concentration of which of the following? A lysosomes B mitochondria с chloroplasts D ribosomesWhich of the following regarding microtubules is LEAST correct? A)Microtubules do not have important functions in neurons B)Microtubules are important for anterograde axoplasmic transport C)No answer text provided. D)Microtubules are important for maintaining the structure of the neuron E)Microtubules are important for retrograde axoplasmic transportList and describe the three main types of cytoskeleton. If you wanted to do immunocytochemistry to specifically stain each type of cytoskeleton, what is a protein that could be used for each cytoskeletal type (in other words, what is a unique protein for each cytoskeletal type)?