Ch.28 - ProkaryotesSee all chapters
All Chapters
Ch.1 - Introduction to Biology
Ch.2 - Chemistry
Ch.3 - Water
Ch.4 - Carbon
Ch.5 - Biological Molecules
Ch.6 - Cells
Ch.7 - The Membrane
Ch.8 - Energy and Metabolism
Ch.9 - Respiration
Ch.10 - Photosynthesis
Ch.11 - Cell Signaling
Ch.12 - Cell Division
Ch.13 - Meiosis
Ch.14 - Mendelian Genetics
Ch.15 - Chromosomal Theory of Inheritance
Ch.16 - DNA Synthesis
Ch.17 - Gene Expression
Ch.18 - Regulation of Expression
Ch.19 - Viruses
Ch.20 - Biotechnology
Ch.21 - Genomics
Ch.22 - Development
Ch.23 - Evolution by Natural Selection
Ch.24 - Evolution of Populations
Ch.25 - Speciation
Ch.26 - History of Life on Earth
Ch.27 - Phylogeny
Ch.28 - Prokaryotes
Ch.29 - Protists
Ch.30 - Plants
Ch.31 - Fungi
Ch.32 - Overview of Animals
Ch.33 - Invertebrates
Ch.34 - Vertebrates
Ch.35 - Plant Anatomy
Ch.36 - Vascular Plant Transport
Ch.37 - Soil
Ch.38 - Plant Reproduction
Ch.39 - Plant Sensation and Response
Ch.40 - Animal Form and Function
Ch.41 - Digestive System
Ch.42 - Circulatory System
Ch.43 - Immune System
Ch.44 - Osmoregulation and Excretion
Ch.45 - Endocrine System
Ch.46 - Animal Reproduction
Ch.47 - Nervous System
Ch.48 - Sensory Systems
Ch.49 - Muscle Systems
Ch.50 - Ecology
Ch.51 - Animal Behavior
Ch.52 - Population Ecology
Ch.53 - Community Ecology
Ch.54 - Ecosystems
Ch.55 - Conservation Biology

Concept #1: Prokaryote Lineages 1

Concept #2: Prokaryote Lineages 2

Additional Problems
Oxygen concentration of 1% of 1 billion years ago increased to the present level of 21% because of photosynthetic activity ofa. fungib. cyanobacteriac. plantsd. protistse. animals
Which of the following immune evasion strategies is NOT used by M. tuberculosis?a. M. tuberculosis prevents acidification of the phagosome.b. M. tuberculosis can remain latent and undetected in the macrophage.c. M. tuberculosis inhibits lysosome fusion to the phagosome.d. M. tuberculosis targets and destroys the host CD4 T-cells to prevent a host immune response.
The kingdom not containing eukaryotes isa. protistab. archaebacteriac. fungid. animaliae. planta
Members of Archaea are often referred to as extremophils because they live in conditions of extreme: a. Temperatureb. Salinityc. Heatd. All are correct
If primordial earth lacked free O2, as is speculated, then the first living organisms must have _______.a. been photosyntheticb. practiced fermentation (anaerobic metabolism)c. practiced glycolysis and cellular respiration
The _____ have a number of mechanisms to survive in environments that are high in salt.a. halophilesb. methanogensc. thermoacidophilesd. cyanobacteria
The archaea which are found living in extremely hot acidic environments such as hot springs, geysers, thermal vents and around volcanoes are known as _____.a. cyanobacteriab. aquificalesc. thermoacidophilesd. methanogens
The activity of the _____ contributes to the greenhouse effect and global warming.a. halophilesb. methanogensc. cyanobacteriad. None of these
Characteristics of Azotobacter Azotobacter is a genus of bacteria that live in soil and have the following characteristics: They are bacilli.They are gram-negative.They are obligate aerobes. They can fix nitrogen. (Unlike some other nitrogen-fixing bacteria, which associate with the roots of plants, Azotobacter species are free-living.)Select the four statements that are true for bacteria in the genus Azotobacter. a. They are poisoned by O2. b. They appear purple after Gram staining. c. They have a relatively thin layer of peptidoglycan in their cell wall. d. They require amino acids or other organic molecules as a source of nitrogen. e. They use O2 for cellular respiration. f. They can carry out anaerobic respiration in an environment that lacks O2. g. They are shaped like rods. h. They have the appearance of coils or corkscrews. i. They can convert atmospheric nitrogen to ammonia.
Archaea and eukarya _____.a. initiate transcription in the same mannerb. have similar types of RNAc. share some of the same ribosomal proteins not found in bacteriad. All of these
Which of the following is not a bacterial disease in humans?a. Lyme diseaseb. Tuberculosisc. Gonorrhead. Hepatitis
Scientists believe that our atmosphere has progressively changed as some living organisms began to harness sunlight energy to split water molecules to form complex carbon molecules. This activity led to an increase ina. waterb. ammoniac. oxygend. ozonee. carbon dioxide
Know the three functional categories that archaea are commonly divided into:
Explain why archaea and bacteria are classified into different kingdoms.