Question 1

Prokaryotes are very important ecologically because of their involvement in all of the following except

Accepted Answer

A) photosynthesis. 
B) nitrogen fixation. 
C) STDs. 
D) denitrification. 
E) bioremediation. 
A) photosynthesis. 
B) nitrogen fixation. 
C) STDs. 
D) denitrification. 
E) bioremediation.

Question 2

Which of the following is not true about prokaryotes?

Accepted Answer

A) They are the oldest organisms on Earth. 
B) They are the structurally simplest organisms. 
C) They are the most abundant life forms on Earth. 
D) They contain organelles. 
E) They are found in fossils that are 3.0-3.5 billion years old. 
A) They are the oldest organisms on Earth. 
B) They are the structurally simplest organisms. 
C) They are the most abundant life forms on Earth. 
D) They contain organelles. 
E) They are found in fossils that are 3.0-3.5 billion years old.

Question 3

A microbiologist is investigating the effects of cold on a particular bacterium.He notices that as the temperature approaches zero degrees Centigrade,the bacteria begin to

Accepted Answer

A) form more pili. 
B) produce thicker cell membranes. 
C) secrete more peptidoglycans. 
D) form endospores. 
E) secrete lipopolysaccharides from their thicker cell membranes. 
A) form more pili. 
B) produce thicker cell membranes. 
C) secrete more peptidoglycans. 
D) form endospores. 
E) secrete lipopolysaccharides from their thicker cell membranes.

Question 4

Choose letter of the best match from the following:
-Direct uptake of nucleic acid by a bacterium.

Accepted Answer

A) conjugation 
B) plasmid 
C) transduction (generalized) 
D) transduction (specialized) 
E) transformation (artificial)
F)transformation (natural) 
A) conjugation 
B) plasmid 
C) transduction (generalized) 
D) transduction (specialized) 
E) transformation (artificial)
F)transformation (natural)

Question 5

Plasmids are distinguished from bacterial chromosomes in that

Accepted Answer

A) plasmids are circular,bacterial chromosomes are linear. 
B) plasmids occur in the cytoplasm,bacterial chromosomes occur in the nucleus. 
C) plasmids are composed of RNA,bacterial chromosomes are composed of DNA. 
D) plasmids have few genes,bacterial chromosomes have many genes. 
E) plasmids consist of single-stranded nucleic acids,bacterial chromosomes consist of double-stranded nucleic acids. 
A) plasmids are circular,bacterial chromosomes are linear. 
B) plasmids occur in the cytoplasm,bacterial chromosomes occur in the nucleus. 
C) plasmids are composed of RNA,bacterial chromosomes are composed of DNA. 
D) plasmids have few genes,bacterial chromosomes have many genes. 
E) plasmids consist of single-stranded nucleic acids,bacterial chromosomes consist of double-stranded nucleic acids.

Question 6

Bacteria cause all of the following human diseases except

Accepted Answer

A) cholerA. 
B) diphtheria. 
C) mononucleosis. 
D) tetanus. 
E) malaria. 
A) cholerA. 
B) diphtheria. 
C) mononucleosis. 
D) tetanus. 
E) malaria.

Question 7

Members of the genus ______________ are associated with scarlet fever,rheumatic fever,pneumonia,etc.

Accepted Answer

The answer of Members of the genus ______________ are associated...

Exam 28: Prokaryotes

Prokaryotes are very important ecologically because of their involvement in all of the following except

Which of the following is not true about prokaryotes?

A microbiologist is investigating the effects of cold on a particular bacterium.He notices that as the temperature approaches zero degrees Centigrade,the bacteria begin to

Choose letter of the best match from the following: -Direct uptake of nucleic acid by a bacterium.

Plasmids are distinguished from bacterial chromosomes in that

Bacteria cause all of the following human diseases except

Members of the genus ______________ are associated with scarlet fever,rheumatic fever,pneumonia,etc.

The Science of Biology

The Nature of Molecules

The Chemical Building Blocks of Life

Cell Structure

Membranes

Energy and Metabolism

How Cells Harvest Energy

Photosynthesis

Cell Communication

How Cells Divide

Sexual Reproduction and Meiosis

Patterns of Inheritance

Chromosomes Mapping and the Meiosis - Inheritance Connection

Dna: the Genetic Material

Genes and How They Work

Control of Gene Expression

Biotechnology

Genomics

Cellular Mechanisms of Development

Genes Within Populations

The Evidence for Evolution

The Origin of Species

Systematics and the Phylogenetic Revolution

Genome Evolution

Evolution of Development

The Tree of Life

Viruses

Protists

Overview of Green Plants

Fungi

Overview of Animal Diversity

Noncoelomate Invertebrates

Coelomate Invertebrates

Vertebrates

Plant Form

Vegetative Plant Development

Transport in Plants

Plant Nutrition and Soils

Plant Defense Responses

Sensory Systems in Plants

Plant Reproduction

The Animal Body and Principles of Regulation

The Nervous System

Sensory Systems

The Endocrine System

The Musculoskeletal System

The Digestive System

The Respiratory System

The Circulatory System

Osmotic Regulation and the Urinary System

The Immune System

The Reproductive System

Animal Development

Behavioral Biology

Population Ecology

Community of Ecology

Dynamics of Ecosystems

The Biosphere

Conservation Biology

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