Question 1

The initial importance of membrane-enclosing, self-replicating RNA molecules and associated proteins was that they

Accepted Answer

A)  maintained these molecules as a unit capable of reproduction and evolution. 
B)  provided sites for proteins to function. 
C)  transported materials in and out of the compartment. 
D)  kept other molecules out of the compartment. 
A)  maintained these molecules as a unit capable of reproduction and evolution. 
B)  provided sites for proteins to function. 
C)  transported materials in and out of the compartment. 
D)  kept other molecules out of the compartment.

Question 2

What is the smallest number of ultracentrifugation steps necessary to separate nuclei from ribosomes in a cellular lysate?

Accepted Answer

A)  1 
B)  2 
C)  4 
D)  7 
A)  1 
B)  2 
C)  4 
D)  7

Question 3

In velocity centrifugation, a suspension is layered on top of a sucrose density gradient and centrifuged until the density of the particles matches the density of the sucrose solution.

Accepted Answer

A) True 
 B)False

Question 4

Microscopy, be it light or electron microscopy, is a major research tool in a molecular approach to the study of cells. What does this tell us about the level of resolution needed to solve many problems in cell biology?

Accepted Answer

Microscopy provides a good indication of

The initial importance of membrane-enclosing, self-replicating RNA molecules and associated proteins was that they

What is the smallest number of ultracentrifugation steps necessary to separate nuclei from ribosomes in a cellular lysate?

In velocity centrifugation, a suspension is layered on top of a sucrose density gradient and centrifuged until the density of the particles matches the density of the sucrose solution.

Microscopy, be it light or electron microscopy, is a major research tool in a molecular approach to the study of cells. What does this tell us about the level of resolution needed to solve many problems in cell biology?

Molecules and Membranes

Bioenergetics and Metabolism

Fundamentals of Molecular Biology

Genomics, Proteomics, and Systems Biology

Genes and Genomes

Replication, Maintenance, and Rearrangements of Genomic Dna

RNA Synthesis and Processing

Transcriptional Regulation and Epigenetics

Protein Synthesis, Processing, and Regulation

The Nucleus

Protein Sorting and Transport

Mitochondria, Chloroplasts, and Peroxisomes

The Cytoskeleton and Cell Movement

The Plasma Membrane

Cell Walls, the Extracellular Matrix, and Cell Interactions

Cell Signaling

The Cell Cycle

Cell Death and Cell Renewal

Cancer

Filters

Exam 1: An Overview of Cells and Cell Research

The initial importance of membrane-enclosing, self-replicating RNA molecules and associated proteins was that they

What is the smallest number of ultracentrifugation steps necessary to separate nuclei from ribosomes in a cellular lysate?

In velocity centrifugation, a suspension is layered on top of a sucrose density gradient and centrifuged until the density of the particles matches the density of the sucrose solution.

Microscopy, be it light or electron microscopy, is a major research tool in a molecular approach to the study of cells. What does this tell us about the level of resolution needed to solve many problems in cell biology?

Molecules and Membranes

Bioenergetics and Metabolism

Fundamentals of Molecular Biology

Genomics, Proteomics, and Systems Biology

Genes and Genomes

Replication, Maintenance, and Rearrangements of Genomic Dna

RNA Synthesis and Processing

Transcriptional Regulation and Epigenetics

Protein Synthesis, Processing, and Regulation

The Nucleus

Protein Sorting and Transport

Mitochondria, Chloroplasts, and Peroxisomes

The Cytoskeleton and Cell Movement

The Plasma Membrane

Cell Walls, the Extracellular Matrix, and Cell Interactions

Cell Signaling

The Cell Cycle

Cell Death and Cell Renewal

Cancer

Filters