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Review Module 2
Module 2 Review Exploring Creation with Biology
| Question | Answer |
|---|---|
| Plasma membrane | Regulates what materials pass into and out of the cell |
| Flagellum | Moves the bacterium from place to place |
| Capsule | Adheres to surfaces and wards off infection-fighting agents |
| DNA | Stores the information needed to make an organism a living thing |
| Cytoplasm | Holds the DNA and ribosomes in place |
| Cell wall | Keeps the interior of the cell together and holds the cell's shape |
| Fimbria (sex pili) | Grasps onto surfaces or another bacterium during conjugation |
| Ribosome | Makes proteins |
| What is the most common way bacteria obtain food? | Most bacteria are heterotrophic decomposers. |
| A bacterium is a parasite. Is it heterotrophic or autotrophic? | heterotrophic |
| List the basic steps of conjugation in bacteria. | donor grasps recipient with pili, conjugation tube is formed between bacteria, one plasmid strand is transferred, during the transfer both bacterium begin to make a duplicate of their DNA strand, tube collapses and each bacterium completes DNA replication |
| How can bacteria survive dehydration or high temperatures? | By forming into an endosperm. |
| A few bacteria are placed in an environment rich with resources. What type of population growth will occur? | Exponential growth |
| What resources are available when bacteria experience logistic growth? | Limited |
| How does genetic recombination, which results in no offspring, help bacteria? | Genetic recombination can help bacteria gain traits needed to survive conditions they would not have otherwise survived. |
| What type of bacteria are spherical? | Coccus |
| What type of bacteria are rod-shaped? | Bacillus |
| What type of bacteria are helical? | Spirillum |
| A bacterium is heterotrophic and Gram-negative. To what phylum and class does it belong? | phylum Gracilicutes, class Scotobacteria |
| A spirillum bacterium is Gram-positive. To what phylum and class does it belong? | phylum Firmicutes, class Thallobacteria |
| A bacterium has no cell wall. To what phylum and class does it belong. | phylum Tenericutes, class Mollicutes |
| A bacterium lives in boiling-hot water. To what phylum and class does it most likely belong? | phylum Mendosicutes, class Archaebacteria |
| In the six-kingdom classification system, what replaces Kingdom Monera? | kingdom Archaebacteria and kingdom Eubacteria |
| What conditions are ideal for most bacteria? | Moisture, moderate temperatures, nutrition, darkness, proper amount of oxygen |
| What methods can reduce the chance of bacterial contamination in food? | Heat food and seal it away from air, Dehydrate, Freeze, Pasteurize, Store in refrigerator |
| List the basic steps for asexual reproduction. | DNA loop attaches to membrane, DNA is copied and attaches to membrane, cell wall elongates separating DNA strands, cell wall and membrane close between DNA strands into separate cells |
| A bacterium is gram-positive and spherical. To what phylum and class does it belong? | phylum Firmicutes, class Firmibacteria |
| A bacterium is rod-shaped and gram-positive. To what phylum and class does it belong? | phylum Firmicutes, class Firmibacteria |
| To what class does Streptococcus pneumoniae belong? | Firmibacteria |
| Phylum Gracilicutes is separated into three classes by what trait? | How the bacteria obtain food |
| A bacterium produces its food through photosynthesis and does not produce oxygen. To what phylum and class does it belong? | phylum Gracilicutes, class Anoxyphotobacteria |
| A bacterium is photosynthetic and produces oxygen. To what phylum and class does it belong? | phylum Gracilicutes, class Oxyphotobacteria |
| What is another name for cyanobacteria? | Blue-green algae |
| What part of a cell is used for classification purposes? | Cell wall |
| What is another term for asexual reproduction? | Binary fission |
| Name three ways bacteria exchange genetic information. | conjugation transformation transduction |
| What is conjugation? | Bacteria link together to exchange circular strands of DNA called plasmids |
| What is transformation? | A bacterium absorbs a segment of DNA from a non-functional bacterium |
| What is transduction? | DNA is transferred from one bacterium to another by a virus |
| In what two ways do autotrophic bacteria produce their food? | Photosynthesis Chemosynthesis |
| What causes botulism? | Clostridium botulinum |
| What is the genus name of bacteria that are prevalent in eggs and poultry? | Salmonella |
| What color is a gram-negative bacteria after staining? | Red (pink) |
| A bacterium is Gram negative and needs light to survive. It lives in a habitat that is completely oxygen-free. To what phylum and class does it belong? | phylum Gracilicutes class Anoxyphotobacteria |
| A Staphylococcus bacterium is Gram positive and lives in an oxygen-free habitat. To what phylum and class does it belong? | phylum Firmicutes class Firmibacteria |
Created by:
michelemegna
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