From Gene To Protein - Campbell Biology Concepts | Biology+

Course

Introductory Biology

Study Pack

Set 1: Introduction: Themes in the Study of Life

Set 2: The Chemical Context of Life

Set 3: Water and Life

Set 4: Carbon and the Molecular Diversity of Life

Set 5: The Structure and Function of Large Biological Molecules

Set 6: A Tour of the Cell

Set 7: Membrane Structure and Function

Set 8: An Introduction to Metabolism

Set 9: Cellular Respiration and Fermentation

Set 10: Photosynthesis

Set 11: Cell Communication

Set 12: The Cell Cycle

Set 13: Meiosis and Sexual Life Cycles

Set 14: Mendel and the Gene Idea

Set 15: The Chromosomal Basis of Inheritance

Set 16: The Molecular Basis of Inheritance

Set 17: From Gene to Protein

Set 18: Regulation of Gene Expression

Set 19: Viruses

Set 20: Biotechnology

Set 21: Genomes and Their Evolution

Set 22: Descent with Modification: A Darwinian View of Life

Set 23: The Evolution of Populations

Set 24: The Origin of Species

Set 25: The History of Life on Earth

Set 26: Phylogeny and the Tree of Life

Set 27: Bacteria and Archaea

Set 28: Protists

Set 29: Plant Diversity I: How Plants Colonized Land

Set 30: Plant Diversity II: The Evolution of Seed Plants

Set 32: An Overview of Animal Diversity

Set 33: An Introduction to Invertebrates

Set 34: The Origin and Evolution of Vertebrates

Set 35: Plant Structure, Growth, and Development

Set 36: Resource Acquisition and Transport in Vascular Plants

Set 37: Soil and Plant Nutrition

Set 38: Angiosperm Reproduction and Biotechnology

Set 39: Plant Responses to Internal and External Signals

Set 40: Basic Principles of Animal Form and Function

Set 41: Animal Nutrition

Set 42: Circulation and Gas Exchange

Set 43: The Immune System

Set 44: Osmoregulation and Excretion

Set 45: Hormones and the Endocrine System

Set 46: Animal Reproduction

Set 47: Animal Development

Set 48: Neurons, Synapses, and Signaling

Set 49: Nervous Systems

Set 50: Sensory and Motor Mechanisms

Set 51: Animal Behavior

Set 52: An Introduction to Ecology and the Biosphere

Set 53: Population Ecology

Set 54: Community Ecology

Set 55: Ecosystems and Restoration Ecology

Set 56: Conservation Biology and Global Change

Set 17 From Gene To Protein

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Set 17 From Gene To Protein

(Multiple Choice)

Free

Which of the following is a function of a poly-A signal sequence?

A) It adds the poly-A tail to the 3' end of the mRNA.
B) It codes for a sequence in eukaryotic transcripts that signals enzymatic cleavage ~10-35 nucleotides away.
C) It allows the 3' end of the mRNA to attach to the ribosome.
D) It is a sequence that codes for the hydrolysis of the RNA polymerase.
E) It adds a 7-methylguanosine cap to the 3' end of the mRNA.

Answer

(Multiple Choice)

Free

Which of the following variations on translation would be most disadvantageous for a cell?

A) translating polypeptides directly from DNA
B) using fewer kinds of tRNA
C) having only one stop codon
D) lengthening the half-life of mRNA
E) having a second codon (besides AUG) as a start codon

Answer

(Multiple Choice)

Free

Garrod's information about the enzyme alteration resulting in alkaptonuria led to further elucidation of the same pathway in humans. Phenylketonuria (PKU)occurs when another enzyme in the pathway is altered or missing, resulting in a failure of phenylalanine (phe)to be metabolized to another amino acid: tyrosine. Tyrosine is an earlier substrate in the pathway altered in alkaptonuria. How might PKU affect the presence or absence of alkaptonuria?

A) It would have no effect, because PKU occurs several steps away in the pathway.
B) It would have no effect, because tyrosine is also available from the diet.
C) Anyone with PKU must also have alkaptonuria.
D) Anyone with PKU is born with a predisposition to later alkaptonuria.
E) Anyone with PKU has mild symptoms of alkaptonuria.

Answer