Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Chapter 24, Problem 24.8PS
Summary Introduction
To explain: The reason for obtaining such DNA fragments that differ in size by a standard amount of about 200 bp,
Introduction: Apoptosis is a process that results in cell death. It is a type of “programmed cell death”. It is observed in the eukaryotic organisms. It can occur due to damage of DNA, the release of cell death enzymes and so on. Apoptosis is either intrinsic or extrinsic. In intrinsic apoptosis, the cell kills itself due to cell stress. However, in extrinsic apoptosis, the cell receives certain signals from the outside environment to kill itself.
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Please help me with this question. More than one answer may be correct.
The + side of a microtubule _____.
Options:
A)
will be attached to the cell membrane
B)
will have a β subunit
C)
will have a high rate of polymerization than the - end
D)
will have an α subunit
E)
will have a lower rate of polymerization than the - end
DNA: 5’-CTCTACTATAAACTCAATAGGTCC-3’
Draw a box around the sequence where RNA polymerase will bind to the DNA.
What is this sequence called?
Will transcription start at this sequence, to the left of this sequence (“upstream”) or, to the right of this sequence (“downstream”)? Draw a small arrow above the DNA strand where transcription will begin.
Which DNA strand will RNA polymerase transcribe? Highlight this strand with your highlighter. (Hint: RNA pol is similar to DNA pol because it can only make new RNA in the 5’ to 3’ direction. Draw in an arrow to show the direction that RNA polymerase will move along the DNA strand.
Plssss helppppp. Describe the purpose of DNA replication. What is it and why is it important?
Chapter 24 Solutions
Becker's World of the Cell (9th Edition)
Ch. 24 - Prob. 1QCh. 24 - Which DNA sequences are more alike: a pair of...Ch. 24 - Suppose you treat rapidly dividing tissue culture...Ch. 24 - Cyclin D is part of the G1 Cdk-cyclin complex....Ch. 24 - Both EGF (a mitogen) and TGF (when acting as an...Ch. 24 - A knockout mouse has been produced using the...Ch. 24 - Cell Cycle Phases. Indicate whether each of the...Ch. 24 - QUANTITATIVE The Mitotic Index and the Cell Cycle....Ch. 24 - Chromosome Movement in Mitosis. It is possible to...Ch. 24 - Cytokinesis. Predict what will happen in each of...
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- Arrange the levels of chromatin packing from most "open" to most condensed (chromosome, loops, nucleosomes, heterochromatin, 30-nm chromatin fiber)arrow_forwardTo explain: How the low pH of lysosomes protect the rest of the cell from lysosomal enzymes in case the lysosome breaks.arrow_forwardPlease help me with this question. More than one answer may be correct. The cis golgi compartment ______. Options: A) is a convenient place to store tools in small cars. B) uses clathrin as a coating protein to send vesicles to the medial compartments. C) sends proteins to their proper destination. D) is continuous with the trans compartment. E) adds specific signal to proteins destine for the lysosomes.arrow_forward
- Transcription. Using strand 1 of the DNA molecule as a template, transcribe a messenger RNA molecule (a.k.a. mRNA transcript). Strand 1 3’ End TTG CTT CAC CTT GCG CGC CCG CGC TAA TTG 5’ end mRNAarrow_forward25. Your friend works in a cell biology research lab. She is working she calls p125, because its molecular mass is 125 kiloDaltons. She knows that p125 is a transmembrane protein with three membrane-spanning domains. It has been previously reported that p125 interacts with three other proteins called p175, p80, and p50 (again, polyacrylamide gel). These four proteins in the cell. To determine how these proteins interact with the membrane, you perform a set of experiments in which you first lyse the cells and save some of your lysate, which you run in the input lane (labeled "I" in Figure Q25 below). The lysate is then subjected to a low-speed centrifugation so that you separate out the membrane fraction (which ends up in the pellet, "P") from the cytoplasm (which is in the supernatant, "S"). You then wash the pellet from the first extraction with a high-salt wash that does not disrupt the lipid bilayer, and save a little bit to run on the gel. After the high-salt wash, you centrifuge…arrow_forwardCleavage Ligand Precursor Receptor Inactive Receptor Active Cell Membrane 6. The figure above shows a model of a ligand precursor being cleaved to produce an active ligand that binds to a specific receptor. Which of the following is most likely to reduce the binding of the active ligand to its receptor? (A) A change in the cytoskeletal attachment of transmembrane proteins (B) The presence of a large amount of the precursor form of the ligand (C) An increase in the ratio of the number of unsaturated to the number of saturated fatty acid tails of the membrane lipids (D) A mutation in the receptor gene that causes a substitution of a charged amino acid for a nonpolar amino acid in the ligand binding site of the receptorarrow_forward
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