CSMLS Exam Questions with 100% Correct Answers | Graded A+
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Course
CSMLS
Institution
CSMLS
CSMLS Exam Questions with 100%
Correct Answers | Graded A+
What molecule is responsible for HOW living organsims synthesize
energy?` - DNA
What are the 2 divisions of metabolism? - Catabolism and Anabolism
What is the function of ATP? - Stores energy for metabolism
What are the four phases of...
What molecule is responsible for HOW living organsims synthesize
energy?` - ✔✔DNA
What are the 2 divisions of metabolism? - ✔✔Catabolism and Anabolism
What is the function of ATP? - ✔✔Stores energy for metabolism
What are the four phases of a bacterial growth curve? - ✔✔Lag,
Exponential, Stationary and Death
Define Sterilization - ✔✔The destruction of all microbial life
Define Disinfection - ✔✔The destruction of microbial life on an inanimate
object
Define Antisepsis - ✔✔The destruction of microbial life on living tissue
(endospores may survive)
What is level 1 control of precautions? - ✔✔Standard precautions -
everyone should follow.
,What are level 2 control of precautions? - ✔✔Contact Precautions - when a
patient is infected and you can garb up to protect yourself because the
infection can be spread with direct contact
What are level 3 control of precautions? - ✔✔Droplet Precautions - patient
can spread the infection through droplets
What are level 4 control of precautions? - ✔✔Airborne/ Isolation
precautions. Can be spread because microorganisms can survive and "fly"
in air.
Vertical Gene Transfer - ✔✔Genetics passed on through reproduction
Horizontal Gene Transfer - ✔✔Transferring genes to another microbe of
the same generation (sets microbes away from multi-celled life)
What are the three mechanisms of horizontal gene transfer? -
✔✔Transformation
Conjugation
Transduction
How can horizontal gene transfer change microorganisms? - ✔✔Microbes
can become more virulent and drug resistant which would make the
disease harder to treat
,Transduction - ✔✔Genetic material passes via a bacterial virus known as a
bacteriophage
Transformation - ✔✔Bacteria bind DNA from there surroundings (DNA
could be floating due to lysis)
Conjugation - ✔✔Donor contracts recipient through a sex pilis. This results
in both cells having identical copies of the genetic material
Transposition - ✔✔DNA pieces can hop to new locations on a genome
How can genetic diversity be studied? - ✔✔By analyzing the sequence of
nucleotides in rRNA
What type of ribosomes are in eukaryotic cells? - ✔✔80S
What kind of ribosomes are within prokaryotic cells - ✔✔70S
Clone vs. Strain - ✔✔Clone is a population of cells derived from a single
cell
Strain is genetically different cells within a clone
How are wavelength and resolution related in microscopy? - ✔✔As the
wavelength decreases, resolution increases.
Resolution - ✔✔To see 2 points as separate and distinct
, What does it mean if a microscope has a resolving power of 0.4 nm? -
✔✔That the microscope can distinguish 2 points 0.5 nm apart
Refractive Index - ✔✔The light bending ability of a medium (light may bend
too much and miss the high magnification lens)
Low refractive index = high resolution
What is the purpose of Immersion Oil - ✔✔Is used to keep light from
bending
What light is collected in Bright field Microscopes? - ✔✔Both light reflected
from the object and unreflected lightq
What light is collected in Darkfeild Microscopes? - ✔✔Only the light
reflected from the object.
An opaque disc UNDER the condenser blocks out light that would
otherwise enter the objective directly.
What is the purpose of Phase-Contrast Microscopy - ✔✔Allows for detailed
examination of internal structures of non-fixed and unstained specimens
In-Phase vs. Out of Phase - ✔✔In phase = peaks match and troughs match
= adds light waves together
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