3 Flashcards
- Which of these is not a physical characteristic one uses to classify prokaryotes?
Gene architecture
Gene translation machinery
Plasma membranes
Genetic expression
- Which of these is not a molecular characteristic one uses to classify prokaryotes?
Amino acid sequences
Guanine and cytosine percentages
Nucleic acid hybridization
Gene and RNA sequencing
Whole genome sequencing
- What is the name of the manual used to classify prokaryotes?
- According to the video Bacteria, are all bacteria bad?
no
- According to the video Bacteria, regarding the bacteria that colonize your skin, it is good or bad? (and know why or why not)
Some of the bacteria that colonize your skin are beneficial and actually keep harmful strains and other types of pathogens from growing
- According to the video Bacteria, which statement describes a way bacteria can be beneficial? (the video describes four ways)
Some of the bacteria that colonize your skin are beneficial and actually help keep harmful strains and other types of pathogens from growing
- According to the video Bacteria, do antibiotics work on viruses?
Also, we should mention that antibiotics do not work on viruses.
- According to the video Bacteria, many bacterial species have a plasmid. What is the definition of a plasmid?
- There are two kinds of prokaryotes on earth, Domain Bacteria and Domain Archaea. Which statement does not describe a difference between these two Domains?
Plasma membrane
Cell wall
Gene translation machinery
Gene architecture
- What is the purpose of the cell wall of prokaryotes?
Protection doesnt let cell rupture (cellulose material) maintain shape, can’t lyze.
- What is the definition of the peptidoglycan sometimes found in prokaryotes?
: polysaccharides connected by the polypeptide (peptide means protein) crosslines.
- What is the difference between gram-positive and gram-negative bacteria?
Gram-Positive: retains purple color
Gram negative: does not retain purple color (sometimes turn red or black)
- Which statement describes the function or composition of a bacterial flagellum?
Flagella- movement made of flagellin, anchored into cell wall
- Which statement describes the function or composition of bacterial pili?
Pili- helps cell attach to appropriate substances and exchange genetic information
- Know the parts of this prokaryote diagram and be able to label them if this test question is chosen.
- Which statement describes the function or composition of bacterial endospores?
Endospore- thick walled spore around the genome and a small portion of cytoplasm when they are exposed to nutrient poor conditions.
- Which statement does not describe the cellular interior of a basic bacterial cell?
Internal membrane
Nucleoid region
Ribosomes
- Prokaryotes reproduce rapidly, allowing genetic variations to spread quickly through a population. How does this spreading of genetic information occur?
Binary fission- replicating doubling genetic information, making split, similar to mitosis, uses fitz protein
- Certain factors can increase the likelihood of mutations occurring in bacterial cells. Which statement does not describe one of those factors?
- What can be the result of a genetic (DNA or plasmid) mutation in a prokaryote?
spreading that plasmid information
- Which statement describes a photoautotrophic bacteria?
- Which statement describes a chemoautotrophic bacteria?
obtains energy by the oxidation of electron donating molecules int their environments
- Which statement describes photoheterotrophic bacteria?
purple, nonsulfyur bacteria use light as their sourced of energy but have to get carbon from organic molecules.
- Which statement describes chemoheterotrophic bacteria?
- Which statement describes bacteria as a plant pathogen?
