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 4, Problem 4.1PS
Wrong Again. For each of the following false statements, change the statement to make it true.
(a) Archaea are ancient bacteria that are the ancestors of modern bacteria.
(b) Bacteria differ from eukaryotes in having no nucleus, mitochondria, chloroplasts, or ribosomes.
(c) Instead of a cell wall, eukaryotic cells have an extracellular matrix for structural support.
(d) All the ribosomes found in a typical human muscle cell are identical.
(e) DNA is found only in the nucleus of a cell.
(f) Because bacterial cells have no organelles, they cannot carry out either ATP synthesis or photosynthesis.
(g) Even the simplest types of infectious agents must have DNA, RNA, and protein.
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Students have asked these similar questions
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1. The strongest way by which a protein can maintain its shape is by using:a) ionic bonds
b) disulfide bonds
c) star war forces
d) van der Waals forces
2. If a cell (like an amoeba) would be capable of migrating from one place to another only with movement created from the inside of the cell, then we can say that that movement is done mainly by:
a) glycoproteins
b) feet
c) microtubules
d) actin filaments
True or False: In eukaryotic cells (such as human cells), the variety and diversity of proteins is much less than the variety and diversity of lipids.
V5. Which organelle is involved in the
formation of lysosomes :
(a) Endoplasmic Reticulum
(b) Golgi Apparatus
(c) Nucleus
(d) Mitochondria
Each of the following statement FALSE. Tell me what is incorrect with the statement and correct it when possible.
For example, if the statement says: the sky is red during daytime. You would answer: the sky isn’t red during daytime, it is blue.
a. Staphylococcus aureus use MreB proteins to organize their morphology (shape) into cocci.
b. Most bacteria will have maximum growth in a glucose-rich environment such as maple syrup.
c. The table below shows that Streptococcus pyogenes is a facultative halophile.
d. Your lab supervisor asks you to grow a new bacterium they got from a collaborator. You grow them in the suggested nutrient-rich media, and you notice that as the log phase growth progresses, the bacteria seem to turn purple.
You mention it to your supervisor and ask whether it is the gradient from very high to low nutrient bioavailability that induces metabolic changes which induces the production of a purple pigment. Your supervisor tells you that is unlikely. What is a more…
Chapter 4 Solutions
Becker's World of the Cell (9th Edition)
Ch. 4 - Why do scientists currently believe that RNA,...Ch. 4 - You have discovered a new organism living in...Ch. 4 - If a scientist were studying a disease in which...Ch. 4 - Imagine that you are building an artificial...Ch. 4 - If viruses are nonliving particles, how can they...Ch. 4 - Wrong Again. For each of the following false...Ch. 4 - Prob. 4.2PSCh. 4 - Toward an Artificial Cell. Scientists have...Ch. 4 - Sentence Completion. Complete each of the...Ch. 4 - Telling Them Apart. Suggest a way to distinguish...
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- Match the following structures with their definitions: (1) Golgi apparatus (2) mitochondria (3) peroxisomes (4) cilia (5) endoplasmic reticulum (6) cytoskeleton (7) vesicles (8) ribosomesA. sacs that contain enzymes that catalyze a variety of specific biochemical reactions B. structures on which protein synthesis occurs C. structures that house the reactions that release energy from nutrients D. a network of microfilaments and microtubules that supports and shapes a cell E. a structure that adds sugars to certain proteins and processes them for secretion F. membrane-bounded sacs G. a network of membranous channels and sacs where lipids and proteins are synthesized H. hairlike structures that extend from certain cell surfaces and wave abouarrow_forwardPlease someone help me with all of these questions(maybe a short explation of why it is the answer) 1. the evolution of the eukaryotic cell, these cells have key changes that include which of the following: a) These cells reproduce by copying their DNA perfectly each generation. b) They have their DNA in the nucleoid area. c) have adapted the mesosome membrane system of the prokaryote to form a nucleus and an endoplasmic reticulum. d) each new type on new eukaryote cell has its own mesosomes e) none of these are true. 2. The evolution/development of the skeletal system found in the Deuterostomes, is made up of two molecules, Ca+2PO4-2 and collagen These molecules are produced released from by a specialized type of stem cell. Therefore, one would expect that these stem cells perform which of the following a) the storage and the release of Ca+2PO4-2 and collagen from vesicles from the Golgi apparatus, b) high levels of protein synthesis c) active transport of amino acids and ions…arrow_forwardDescribe how Ribosomes interact with at least 10 other organelles in a normal cell. (Please be detailed and use full sentences, but try to describe it in a way that a somewhat beginner could grasp.) Thank you!!!!!!arrow_forward
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