Download BIO 105 midterm EXAM 2025 LATEST EXAM COMPLETE EXAM 100% ACCURATE GUARANTEED PASS and more Exams Biology in PDF only on Docsity!
BIO 105 midterm EXAM 2025 LATEST
EXAM COMPLETE EXAM 100%
ACCURATE GUARANTEED PASS
which of the following best defines the term microbiome a) a small group of microbes b) a community of microorganisms that exists in a particular environment c) the world of microbes d) a community of microbes in your gut b) a community of microorganisms that exists in a particular environment what scientist first reordered observation of microbes? a) pasteur b) flemming c) leeuwenhoek d) reddi c) leeuwenhoek
(blank) theory holds that particles of rotting matter are released into the air, especially at night, by refuse and decomposing bodies. I was also stated that you could be (blank) with decomposition and become ill. It was believed that was the cause of the (blank) or pandemic occurring in western europe and north africa from 1346 to 1353. it is the most fatal pandemic recorded in human history, causing the deaths of (blank) million people
- miasma
- infused
- plague
- 75 to 200 antibotics any substance that inhibits the growth of or kills a bacterial cell bacteriostatic antibiotics that inhibit growth antiseptic used to sterilize surfaces of living tissue and include hydrogen peroxide and rubbing alcohol
experimental conditions applied treatments the variable being tested dependent variable the variable being experimentally manipulated independent variable repeating the experiment until you have robust dataset replication flemming discovered penicillin
pastuer disproved spontaneous generation woses used rRNA to create the great tree of life margulis came up with the endosymbiosis theory for the origin of eukaryote cells (blank) is the study of complete set of DNA in an organism. In contrast (blank) is the study of genetic material recovered directly from an environmental or clinical sample. The genetic information of the microbiome is recovered using methods. (blank) is the method by which we determine the sequences of base pairs in DNA
- genomics
- metagenomic
- microbiome
- DNA sequencing
a)A miracle cure that involves combining antibiotics and feces to resolve gut ilnesses b)An ineffective therapeutic method that has been abandoned c) The use of antibiotics to eliminate a sick person's gut microbiome. d)The transfer of a healthy person's gut microbiome into an individual with a gut related illness. d)The transfer of a healthy person's gut microbiome into an individual with a gut related illness. Koch's postulates prescribe a protocol to determine if a disease is caused by bacteria.Which is not one of Koch's postulates? a) If you give the pathogen to a healthy organism, it will become sick. b) The pathogen is only found in diseased, not healthy, organisms c)The pathogen can be isolated from a diseased organism. d)The pathogen can be transmitted through the air or fecal matter. d)The pathogen can be transmitted through the air or fecal matter.
Metagenomics is best described as? a) using germ-free mice to determine the microbes implicated in disease b)using sequencing to identify all organisms present in a sample c)using a microscope to determine which microbes are present b)using sequencing to identify all organisms present in a sample what are koch's postulates used for? a) To prove a particular agent causes a disease b) To identify potential causes of a disease c) To explain how a disease is transmitted d)To understand the mechanism of disease on a cellular level a) To prove a particular agent causes a disease extremophiles are microbes that survive in intense conditions, such as very high or low temperatures
b)all of the answers provided which of the following is produced by our gut microbes a) bile acid b)short chain fatty acids c)sugars d)cellulose e)numerous metabolites f) blood cells b)short chain fatty acids c)sugars e)numerous metabolites dysbiosis is an (blank) of a microbiome, which can result in numerous (blank) outcomes, including (blank). dysbiosis can result from taking (blank) and from (blank)
- imbalance
- unhealthy
- autoimmune disease
- antibiotics
- birth mode microbial communities adapted to a particular environment
- true or false true more complex foods require a more diverse set of microbes to break down
- true or false true whale microbiome shares characteristics with both cows and meat eating predators human microbiome significant contributor to human health
b)Germ-free mice c)Metegenomics d) Bacterial fermentation e) Anaerobic culturing (blank) is an approach for identifying all of the next generations sequencing present in a sample. it employs (blank) to determine all of the (blank) present
- metagenomic
- genomes
- next generation sequencing
- genomes stability ability to maintain with without any unexpected changes
resilience capacity to self-modulate resistance ability to ward off invasions of outsiders perturbation movement from a stable state towards an unstable state choose the one incorrect statement below a) Human microbiome can be defined by the functions provided b) Human microbiome can be defined by the common members c) Human microbiome can be defined by the illnesses it produces
What important product is produced when microbiota digest resistant starch?
- Short chain fatty acids
- Adenosine triphosphate
- Antigens
- Oxygen
- Short chain fatty acids How did cyanobacteria transform Earth’s atmosphere? By consuming all the existing oxygen By producing methane By consuming all the existing carbon dioxide
By producing oxygen By producing oxygen Approximately when do we think eukaryotic cells appeared on Earth? 2 billion years ago 4 billion years ago 0.5 million years ago 1 million years ago 4000 years ago 2 billion years ago A cyanobacterium obtains its energy from what?
Membrane → DNA → protein DNA → RNA → protein Lynn Margulis proposed that eukaryotic cells came from a chance fusion of two prokaryotes. True False True The Miller/Urey experiment was designed to test which of the following questions? Could organic molecules be created under early Earth conditions? Could life be created in a glass chamber? Could inorganic molecules create life? Could early Earth’s conditions be mimicked
Could organic molecules be created under early Earth conditions? On completing this course you should have a solid understanding of which knowledge outcomes? Choose all that apply. The normal human microbiome; Approaches you can employ to remediate a dysbiotic microbiome; and The dysbiotic microbiome and its impact on human health; Social issues that knowledge of our microbiome has raised. all selected
