LooseLeaf for Integrated Principles of Zoology
17th Edition
ISBN: 9781259562310
Author: Cleveland P Hickman Jr. Emeritus, Susan L. Keen, Allan Larson, David J Eisenhour Professor PhD, Helen I'Anson Associate Professor of Biology, Larry S Roberts
Publisher: McGraw-Hill Education
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Chapter 2, Problem 6RQ
By what mechanism might organic molecules have been concentrated within a semipermeable membrane in a prebiotic world so that
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Which is true of ribosomes found in eukaryotic cells? They:
A) contain DNA
B) synthesize carbohydrates
C) are attached to the Rough Endoplasmic reticulum (RER) and carry out the synthesis of proteins
D) are found inside the endoplasmic reticulum
E) are originally found associated with the endoplasmic reticulum in prokaryotic cells.
E. coli would be a good model organism for which of the following processes?
a)
DNA replication
b)
how mitochondria get distributed to daughter cells during cell division
c)
how cells decode their genetic instructions to make proteins (translation)
d)
a and c
e)
a, b and c
Insulin, a biological macromolecule (a protein), is a polymer produced by the beta cells of the pancreas. Given the characteristics of the original, primitive Prokaryote cells, which of the following is likely to be true?
a) This polymer is a linear sequence (Chain) of amino acids
b) The monomers are linked by dehydration synthesis.
c) When the monomers are connected to form the polymer using the process of dehydration synthesis a covalent bond links the monomers,
d) The structure of this type of polymer presents the R groups as extending off of the chain,
e) All are true.
Chapter 2 Solutions
LooseLeaf for Integrated Principles of Zoology
Ch. 2 - Explain each of these properties of water, and...Ch. 2 - What was the composition of the earths atmosphere...Ch. 2 - Regarding the experiments of Miller and Urey...Ch. 2 - Explain the significance of the Miller-Urey...Ch. 2 - Name three different sources of energy that could...Ch. 2 - By what mechanism might organic molecules have...Ch. 2 - Name two simple carbohydrates, two storage...Ch. 2 - What characteristic differences in molecular...Ch. 2 - Explain the difference between the primary,...Ch. 2 - Prob. 10RQ
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- The process by which messenger RNA codes for the synthesis of a specific protein is called: a) replication b) transcription c) translation d) gene regulation Which statement is true about prokaryotes? A) they have no chromosomes b) they have chromosomes, but they are not membrane bound c) they have membrane bound chromosomes d) their chromosomes are made of RNA rather than DNA In a eukaryotic cell, most ATP is made in which location? A) nucleus b) mitochondria C) cytoplasm d) golgi apparatusarrow_forwardWhich is true of Prokaryote cells? A) Because their DNA exists in a nucleoid area, the synthesis of proteins depends on random interactions between mRNA and rRNA, B) They contain membrane-bounded compartments or organelles. C) A true nucleus contains the DNA in the form of chromosomes D) Some contain mitochondria E) They contain many organelles in the cytoplasmarrow_forwardThe endomembrane system is responsible for O a) Synthsize molecule O b) transport cell products c) secrete material found d) digestion of matter e) All of the abovearrow_forward
- Explain why it is possible to model a DNA molecule as, a) electrically charged filament, b) elastic filament and c) random path filament.arrow_forwardIn prokaryotes, after the ribosomes completes a synthesis, one would expect to find: a) a new protein molecule to appear in the nucleus, b) new DNA inside the cell nucleoid, c) an increase in the amount of protein (enzyme) in the cell, d) a, b, and c are possible, e) none are possible.arrow_forwardWhich term best describes the following scenario: Calcium ions travel through the cell membrane into the cell, using an integral protein. There is a higher concentration of calcium in the cell. A) Diffusion/Passive transport B) Facilitated diffusion C) Active transport D) Fluid mosaic model E) All terms in this list are correctarrow_forward
- Which describes the role of nucleation factors for cytoskeletal systems? cut or sever polymer typically cap the +ends of polymer pattern the polymer and reduce the critical concentration for assembly cross-link pre-existing polymer into higher order structuresarrow_forwardWhat is the function of DNA? A) Stores chemically coded, heritable information in an organism B) Transfers genetic information from the nucleus to the cytoplasm C) Activates enzymes from inactive states under specific conditions D) Lowers the activation energy of important chemical reactions E) Serves as a barrier to the environment in the cell membranearrow_forwardIn prokaryotes, after the ribosomes completes a synthesis, one would expect to find a) a new protein molecule to appear in the nucleus, b) a protein to form inside the Endoplasmic Reticulum, c) an increase in the amount of protein (enzyme) in the cell, d) a, b, and c are possible, e) none are possible.arrow_forward
- If a scientist drops an animal cell into a solution that contains 10 times more salt than is found inside the cell, which of the following will happen? Hint: drawing a picture may help you. A) The cell will burst since the solution is hypertonic B) The cell will shrink since the solution is hypotonic. C) The cell will burst since the solution is hypotonic. D) The cell will shrink since the solution is hypertonic. E) The cell will not change in size since the solution is isotonic.arrow_forwardNucleoside triphosphates ... a) are synthesized from nucleoside monophosphates using the energy of ATP hydrolysis. b) always contain the nitrogenous base adenine. c) lose their two terminal phosphates in exergonic polymerization reactions that form nucleic acids. d) a and c e) a, b and carrow_forwardIn order for the Golgi apparatus to release synthesized molecules to the outside of the cell (exocytosis), one would expect that the Golgi vesicle a) regulates the DNA. b) causes the translation of DNA into RNA, c) has specific membrane proteins that causes these vesicles to bind to specific binding molecules in the cell membranes. d) forms the chloroplasts membrane. e) binds the DNA to RNAarrow_forward
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