BSC 101 Exam 3 ACTUAL UPDATED QUESTIONS AND CORRECT ANSWERS
Structure of a typical viral particle? -nucleic acid with either DNA or RNA
-surronder by a capsized of protein
-sometimes embellishments (a viral envelope outside the capsid)
, How do viruses infect cells? attach themselves to the host cell
-by injection of their nucleic acid into the host cell
-by the host cell engulfing the virus
Why is a virus considered "not" alive? -they lack the ability to reproduce/replicate
-so it is highjacking the cellular machinery inside the host cell to make its own
protein
-acellular, and parasitic
-don't grow and divide on own
Different types of innate immunity? -skin
hair
cilia
-mucus membranes
-digestive enzymes
-stomach acidity
-inflammatory response
inflammatory response? -inflammation
-a response to trauma
-bacteria,fungal spores and/or viruses have a direct entry into your circulatory
system
How pathogens are marked and destroyed when they -antibodies search for them in blood and breast milk and mark and destroy them
invade the body? by phagocytes before they can infect cells
-the more antibodies the higher the response to the invaders
How vaccinations can cause secondary response? -put a small amount of the pathogen in you which creates memory cells or
antibodies to kill it off it returns
How herd immunity works? -indirect form of protection from the infectious disease that occurs when a large
percent of a population has become immune to the infection
Why everyone who is medically capable should get -vaccinations have to be at 95% of people or above in order for a disease to
vaccinated? disappear
-not enough people are vaccinated to keep the diseases away
How fats are digested? -most fats have a long chain of carbons with hydrogen atoms attached, digested
by enzymes breaking the carbon bonds
How proteins are digested? -enzymes cleaving off amino acids from the larger protein molecules
Structure of a typical viral particle? -nucleic acid with either DNA or RNA
-surronder by a capsized of protein
-sometimes embellishments (a viral envelope outside the capsid)
, How do viruses infect cells? attach themselves to the host cell
-by injection of their nucleic acid into the host cell
-by the host cell engulfing the virus
Why is a virus considered "not" alive? -they lack the ability to reproduce/replicate
-so it is highjacking the cellular machinery inside the host cell to make its own
protein
-acellular, and parasitic
-don't grow and divide on own
Different types of innate immunity? -skin
hair
cilia
-mucus membranes
-digestive enzymes
-stomach acidity
-inflammatory response
inflammatory response? -inflammation
-a response to trauma
-bacteria,fungal spores and/or viruses have a direct entry into your circulatory
system
How pathogens are marked and destroyed when they -antibodies search for them in blood and breast milk and mark and destroy them
invade the body? by phagocytes before they can infect cells
-the more antibodies the higher the response to the invaders
How vaccinations can cause secondary response? -put a small amount of the pathogen in you which creates memory cells or
antibodies to kill it off it returns
How herd immunity works? -indirect form of protection from the infectious disease that occurs when a large
percent of a population has become immune to the infection
Why everyone who is medically capable should get -vaccinations have to be at 95% of people or above in order for a disease to
vaccinated? disappear
-not enough people are vaccinated to keep the diseases away
How fats are digested? -most fats have a long chain of carbons with hydrogen atoms attached, digested
by enzymes breaking the carbon bonds
How proteins are digested? -enzymes cleaving off amino acids from the larger protein molecules
