999

List the four main steps used to prepare a DRY mount, and indicate which step is optional. 1 - Clean slide2 - Circle area on slide for specimen placement (OPTIONAL)3 - Apply organism to slide4 - Air dry at room temperature 2. Why is it important to first clean your slide before applying your sample? You must first remove any unwanted contaminants from the slide otherwise it may be difficult to distinguish between the pathogen of interest and a contaminant. 3. You wish to study the ...

Define the concept of universal precautions (short answer) Universal precautions means any and all samples, whether known or unknown, are to be treated as potentially hazardous (or pathogenic) materials 2. List at lease 3 observations a researcher would be sure to note while assessing and unknown microbial sample (short answer) Need to note: 1. Size and shape 2. Any observable motility 3. Gram status (positive or negative) 3. While observing an unknown sample of limited amounts...

True or False: Because the genome is contained within an enclosed space, (much like the nucleus of a cell) viruses are classified as eukaryotic False. Viruses are neither eukaryotic nor prokaryotic 2. Describe the two basic components of a virus (short answer) A virus has 1. genomic material comprised of either DNA or RNA and 2. a capsid, a membrane-like protective structure that contains the genetic material, similar to the nucleus of a eukaryotic cell 3. The _____ surrounds the ...

micrometer one millionth of a meter, 10^ -6 2. nanometer one billionth of a meter, 10^-9 3. Resolution the distance between two objects at which the objects still can be seen as separate 4. What happens if the resolution is poor? Poor or low resolution means two (or more) objects may appear as one. 5. Contrast the difference in light absorbance between two objects. 6. What happens if there is poor contrast? gives a high background and makes the visualization of multiple objects diff...

List two organs contained in the abdominal cavity. The abdominal cavity contains the stomach, intestines, spleen and liver 2. True or false: The purpose of cellular respiration is to produce ADP a. False 3. True or False: Peripheral proteins are found on the outer surface of a cell membrane True 4. True or False: Exocytosis is the process that occurs to bring biomacromolecules inside the cell. False 5. True or False: Receptor mediated endocytosis uses a signaling molecule from anot...

BIOD 121 Nutrition Module exams Portage learning SPRING 2024/BIOD 121 Nutrition Module exams Portage learning SPRING 2024BIOD 121 Nutrition Module exams Portage learning SPRING 2024BIOD 121 Nutrition Module exams Portage learning SPRING 2024BIOD 121 Nutrition Module exams Portage learning SPRING 2024BIOD 121 Nutrition Module exams Portage learning

Keys to a healthy pregnancy 1) adequate vitamins and minerals 2) healthy body weight 3) controlling health conditions 4) avoid teratogens 2. Teratogens Compounds that can increase the risk of a birth defect. 3. Examples of teratogens: 1) Tobacco: miscarriage, stillbirth, LBW, preterm 2) Alcohol: fetal alcohol syndrome 3) Drugs: LBW, miscarriage, birth defects 4. 4 Key pregnancy stages: Fertilization, Blastogenic, Embryonic, Fetal 5. Blastogenic stage (Day 1 to 14): A period of ra...

protein digestion 1. cooking 2. pepsin (in stomach) 3. cholecystokinin -CCK (small intestine) - travels to pancreas, releases trypsin back to SI 4. trypsin - breaks peptide chains 5. amino acids absorbed through portal vein to liver 2. digestion transforming food into basic nutrients that can be absorbed and used by the body 3. sensory stimuli before digestion cognition sound odor appearance taste 4. peristalsis Involuntary waves of muscle contraction that keep food moving along in...

positive energy balance more calories consumed than expended 2. negative energy balance fewer calories consumed than expended 3. hyperplasia increase in number of cells (e.g., fat cells in childhood, pregnancy) 4. hypertrophy increase in cell size (low growth and maintenance, such as throughout adulthood) 5. basal metabolic rate the number of calories used by the body while in a fasting state accounts for approximately 60-70% of energy expenditure males 1kcal/kg/hr, femals 0.9kcal...

essential vitamins 13 vitamins that animal cells need but can't synthesize found in both plant and animal sources 2. vitamins produced by the body vitamin K and biotin (gut flora) vitamin D (skin) vitamin A (from beta carotene) niacin (tryptophan) 3. two criteria for vitamins 1. must be consumed in the diet to maintain health. 2. symptoms of deficiency occur in its absence 4. enrichment adding nutrients back that have been lost to processing 5. fortification adding nutrient not nat...