ANAT & PHYS (LL W/ACCESS)(CUSTOM)
4th Edition
ISBN: 9781266039621
Author: McKinley
Publisher: MCG CUSTOM
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Chapter 4.1, Problem 1WDYL
What is the advantage of using a TEM instead of an LM to study intracellular structure?
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Of the following functions the peripheral glycoproteins and glycolipids (surface markers) of animal cell membranes are most important for
a) the ability of the cell to recognize like and different cells.
b) active transport of molecules against their concentration gradients.
c) facilitated diffusion of molecules down their concentration gradients.
d)maintaining membrane fluidity at low temperatures.
1) Describe the role of the signal sequence and the signal recognition particle (SRP) in targeting and processing proteins in the endoplasmic reticulum.
2) What is the function of the trans-Golgi network?
Consider two different proteins that are leaving from the Golgi in order to arrive in their common destination, a lysosome. In order for these two different proteins to be sent to the same place, what should they have in common?
A) They must have the same primary structure
B) They must have been imported into the cell by endocytosis.
C) They must have the same tertiary structure
D) They probably have the same glycosylation pattern.
..
Chapter 4 Solutions
ANAT & PHYS (LL W/ACCESS)(CUSTOM)
Ch. 4.1 - What is the advantage of using a TEM instead of an...Ch. 4.1 - Prob. 2WDYLCh. 4.1 - What are the three main structural features of a...Ch. 4.1 - What cellular structure is responsible for forming...Ch. 4.2 - How do lipids maintain the basic physical barrier...Ch. 4.2 - What type of plasma membrane protein provides the...Ch. 4.3 - How does O2 diffuse into a cell and CO2 diffuse...Ch. 4.3 - Prob. 8WDYLCh. 4.3 - Define osmosis.Ch. 4.3 - What occurs to the tonicity of a cell when it is...
Ch. 4.3 - What general conclusion can you make concerning...Ch. 4.3 - What transport process involved in the movement of...Ch. 4.3 - Diagram a flowchart for the active processes of...Ch. 4.4 - Define a resting membrane potential.Ch. 4.4 - Prob. 15WDYLCh. 4.5 - What are some examples of how cells communicate...Ch. 4.5 - How do action of enzymatic receptors and G...Ch. 4.6 - Describe the general structure of both the...Ch. 4.6 - Lysosomes and peroxisomes are both small...Ch. 4.6 - Which non-membrane-bound organelle functions (a)...Ch. 4.6 - Which cellular surface structure functions in (a)...Ch. 4.6 - Which cellular junction (a) provides resistance to...Ch. 4.7 - What is the function of nuclear pores within the...Ch. 4.7 - What is the function of the nucleolus?Ch. 4.7 - Describe the structural relationship of DNA and...Ch. 4.8 - What are the three major structures required for...Ch. 4.8 - What is a codon and an anticodon?Ch. 4.8 - How is mRNA attached to ribosomes and translated...Ch. 4.8 - The genetic code of DNA is the specific...Ch. 4.9 - How is chromatin distinguished from a chromosome?Ch. 4.9 - Describe the process of DNA replication that...Ch. 4.9 - What are the events that occur during the mitotic...Ch. 4.10 - What are the specific changes that occur to DNA...Ch. 4 - Prob. 1DYKBCh. 4 - _____ 2. The molecule that is responsible for most...Ch. 4 - Prob. 3DYKBCh. 4 - Prob. 4DYKBCh. 4 - Prob. 5DYKBCh. 4 - Prob. 6DYKBCh. 4 - Prob. 7DYKBCh. 4 - Prob. 8DYKBCh. 4 - _____ 9. During this stage of mitosis, the...Ch. 4 - _____ 10. Erythrocytes do not have a nucleus. In...Ch. 4 - Prob. 11DYKBCh. 4 - Prob. 12DYKBCh. 4 - Describe the passive processes of membrane...Ch. 4 - Describe the active processes of membrane...Ch. 4 - List the membrane-bound structures, and describe...Ch. 4 - Prob. 16DYKBCh. 4 - Prob. 17DYKBCh. 4 - Prob. 18DYKBCh. 4 - Prob. 19DYKBCh. 4 - Explain the processes that occur in the different...Ch. 4 - Michael was born with Tay-Sachs disease. Which of...Ch. 4 - Prob. 2CALCh. 4 - Prob. 3CALCh. 4 - Prob. 4CALCh. 4 - Prob. 5CALCh. 4 - Prob. 1CSLCh. 4 - Prob. 2CSLCh. 4 - Prob. 3CSL
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- The Golgi complex functions to A) modify and secrete proteins to the external environment. B) sort proteins used within the cell. C) both modify and sort proteins into those destined for secretion and those that function in membrane structures. D) synthesize proteins.arrow_forward39)Start and stop signal sequences on a newly translated protein A) Tell the ribosomes when to move to the nucleus B) Help position it within the ER membrane correctly C) Indicate where glycosylation should occur D) Are important for protein modifications in the smooth ER E) Are added in the golgi apparatusarrow_forwardList 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…arrow_forward
- Q48arrow_forwardThe inner nuclear membrane contains a) None of these choices are accurate b) proteins including chaperonins and translocon c) integral membrane proteins including emerin, the lamin B receptor (LBR), and the SUN proteins d) peripheral membrane proteins including KASH and SUNarrow_forwardName the signal which helps protein to move in or out of the nucleus?a) Notch signalb) Paracrine signalc) Nuclear localization signald) Chemical signalsarrow_forward
- Membrane embedded Proteins: A) Why were the membrane embedded proteins important in the appearance of life? B) Why was it important to have a mechanism for the movement of molecules in to and out of the cell? C) Describe the key structure and functional properties of the three types of cell membrane embedded transport proteins.arrow_forward12) Match the cell-cell junction on the left with the appropriate function on the right. Note that more than one letter may apply for a particular function and that each letter may be used more than once or not at all. A) Gap junctions provides a very strong attachment point between cells B) Desmosomes allow easy movement of large amounts of substances between adjacent cells C) Plasmodesmata seals the plasma membranes of adjacent cells together, preventing the movement of molecules between them D) Tight junctionsarrow_forwardWhich of the following is an example of peripheral membrane protein?a) Insulin receptorb) Glycophorinc) Integrind) Glycolipid transfer proteinsarrow_forward
- Describe the molecular interactions that a cell uses to migrate through extracellular matrix. (use the key terms : actin, integrin, fibronectin)arrow_forwardIf a membrane protein is described as "integral" what does that word refer to? A) super important; plays a key function B) It is bonded to a non protein molecule like a sugar chain or lipid C) It must be an ID tage/ cell recognition protein D) It is strongly integrated/ embedded into the membrane likely spanning the entire widtharrow_forwardAmong the statements a, b and c, which is/are false? a) Endocytosis is the formation of vacuoles by the plasma membrane for the purpose oftransport inside the cell a small content of extracellular fluid. b) Exocytosis is the formation of vacuoles by the plasma membrane for the purpose oftransport a small amount of intracellular fluid out of the cell. c) Pinocytosis is a form of endocytosis. d) All of these statements are false. e) None of these statements is false.arrow_forward
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