Question 1For import into the nucleus, proteins require:Ran-GTPactive transportPex5an NESQuestion 2The nuclear envelope contains nuclear pore complexes (NPCs) that allow small molecules to pass but excludes macromoleculeslarger than 40 kDaTrueFalse

The nucleus is the compartment that is generally found in the centre of a eukaryotic cell and houses…

Answered: Question 1 For import into the nucleus,…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Question 2 2/4 points Which of these associations between a cytoskeletal fiber and its function are a correct match? 1 Microtubules and chromosome separation during mitosis 1 Intermediate filaments and myosin 1. True 2 Microfilaments and flagellar motion 2. False 1 Actin filaments and vesicular transport
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QUESTION 31 Which molecule is displaced when a vesicle and its target membrane fuse? OA. Water OB. Phospholipids OC. SNARES OD. DNA O E. Cholesterol QUESTION 32 Which of the following is a possible explanation as to why a transcription factor that you expressed in the cytoplasm using a plasmid stayed in the cytoplasm and did not move into the nucleus? OA. The transcription factor is lacking a nuclear localization signal. OB. The protein lacks a proteasome-targeting sequence. OC. The transcription factor is lacking a signal sequence to direct it to the ER. OD. The transcription factor is lacking a KDEL retention signal. QUESTION 33 A newly formed COPII-coated vesicle has all of the following except OA. Sar 1 OB. Clathrin OC.Sec 13/31 OD. Sec 23/24 OE. V-SNARE
Question 12
Question 13 of 25 Which of the following are characteristics of all prokaryotes? Select the correct response(s): ✓ The absence of sexual mode of reproduction The absence of cell wall ✓ The absence of mebrane-bound organelles The presence of ribonucleoproteins The presence of extrachromosomal DNA The presence of mebrane-bound nucleus 13
Question 1 Listen If you are given a sample with 1,000,000 pfu/mL of bacteriophage (Tube A) and plate 1mL of the sample on a TSA plate, what will you observe after 24 hours incubation? (How many plaques?) 100,000 because it is a 1:10 dilution. Zero because bacteriophage need a host to grow. More than 300 because it will be TNTC. 1,000,000 plaques because there are 1,000,000 phage in 1mL.
QUESTION 22 Which compartments are topologically equivalent with the nucleus? OA. ER and mitochondria B. Cytoplasm, ER and lysosomes C. Cytoplasm only Golgi and ER Extracellular space and cytoplasm E. QUESTION 23 Which of the following protein are found on the outer coat of vesicles budding from the ER? OA. COPII proteins OB. +SNARES OC. Sar1 OD. Sec61 OE. Clathrin QUESTION 24 If you were studying protein secretion in yeast and identified a mutant in which secretory vesicles appeared to attach to the cytoplasmic face of the plasma membrane but never fused with the plasma membrane, which of the following proteins would you hypothesize is defective? O A. Rab OB. Sar1 OC. Sec 23 OD-t-SNARE QUESTION 25
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QUESTION 17 If a cell needs to rapidly acquire small dissolved substances (non-specific), which process will likely be accelerated? a. Osmosis O b. Receptor-mediated endocytosis O c. Pinocytosis O d. Phagocytosis
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Question 22 The genome of SARS-COV2, which causes COVID-19, is a A single standed DNA B single stranded RNA double stranded RNA D double stranded DNA Question 23 The smooth endoplasmic reticulum does the following except to synthesize lipids B to detoxify poison to carry out translation to metabolize carbohydrates E to store calcium Question 24 Which cannot be used to differentiate prokaryotic from eukaryotic organisms? A Eukaryotic cells contain membrane-bound organelles B Prokaryotic DNA is usually circular while eukaryotic DNA is linear and packaged into chromosomes © Eukaryotic transcription includes post-processing of MRNA Prokaryotic MRNA is polycistronic, that is, it can encode more than one polypeptide E There are no extra-chromosomal genetic materials in a eukaryotic cell while prokaryotes have plasmids

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Question 1 For import into the nucleus, proteins require: Ran-GTP active transport Pex5 an NES Question 2 The nuclear envelope contains nuclear pore complexes (NPCs) that allow small molecules to pass but excludes macromolecules larger than 40 kDa True False