1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Masteriza [31]
3 years ago
9

Use the CDC website to examine giardiasis surveillance data. Notice the variety of transmission modes that have been identified.

The CDC notes several characteristics that make drinking and recreational water and person-to-person contact ideal modes of transmission. Which of the following contributes to the ease of transmission via these modes?
1) Resistance to antibiotics
2) Low infectious dose
3) Survival in environment outside host
4) Resistance to chlorine treatment
Biology
1 answer:
Llana [10]3 years ago
6 0

Answer: The option that contributes to the ease of transmission is 2 ( Low infectious dose).

Explanation:

Giardiasis is an infection that affects the intestine which is caused by a parasite known as giardia intestinalis. The giardiasis surveillance data recorded by the CDC, was done to educate public health practitioners and health-care providers about the scope and magnitude of giardiasis. It also provided different route through which the parasite can be transmitted to uninfected individual and these include:

--> Waterborne transmission: In this route of transmission, an individual becomes infected when they drink contaminated water from recreational water(pools) or streams.

--> Foodborne transmission: In this route of transmission, an individual becomes infected when they eat contaminated uncooked foods or foods that become contaminated after cooking.

--> Person to person: in this route of transmission, a healthy individual becomes infected through ianal sex practice.

The LOW INFECTIOUS DOSE of the parasite contributes to the ease at which transmission occurs through the above mentioned routes. The parasite has a two stage life cycle, the trophozoite and cyst. Ingestion of as few as 10 cysts can lead to giardiasis Infection.

You might be interested in
After Pedro had breakfast, he went for a run. Identify at least three energy transformations that had to take place to allow Ped
FromTheMoon [43]
I tried my best to answer.

1) Chemical to mechanical (calories -> muscle contractions)
2) mechanical to mechanical (muscle -> motion)
3) mechanical to thermal (motion -> heat from the body causes sweating)

The potential energy is stored in the body chemically (via food). That potential energy is then released when the body is put in motion.
8 0
4 years ago
How do models provide a practical solution for some scientific research? Check all that apply Models are beautiful displays for
UkoKoshka [18]

Answer:

I'll take a gander at your question.

Explanation:

Your answer should be Models are simplified representations of objects or systems.

All a Scientific Model is, is a representation/presentation of what a project will look like/how it works/ how it will work

5 0
3 years ago
Read 2 more answers
Two solutions will be prepared with the mixture of distilled water and stock solution of KMnO4 (10 mM). Give the correct volumes
Yanka [14]

Answer:

See the answer below

Explanation:

<em>Recall that the law of dilution states that the number of moles before dilution must be equal to the number of moles after dilution.</em>

Mathematically,

     molarity x number of moles before dilution = molarity x number of moles after dilution.

For solution A: final molarity = 3 mM, final volume = 2mL, initial molarity of KMnO4 = 10 mM

Applying the equation:

    10 x initial volume = 3 x 2

        initial volume = 6/10 = 0.6

<u>Hence, Tube A should be made with 0.6 mL of 10 mM KMnO4 stock and  1.4 mL of distilled water to give a solution of 2 mL 3 mM KMnO4.</u>

For solution B:final molarity = 8 mM, final volume = 2 mL, initial molarity = 10 mM

    10 x initial volume = 8 x 2

       initial volume = 16/10 = 1.6

<u>Hence, Tube B should be made with 1.6 mL of 10 mM KMnO4 stock and 0.4 mL of distilled water to give a solution of 2 mL 8mM KMnO4. </u>

7 0
3 years ago
Differentiate between uniform and nonuniform motion​
pentagon [3]

Answer:

  1. Uniform motion is the motion in which body covers equal distances in equal intervals of time
  2. nonuniform motion is the motion in which body covers unequal distances in equal intervals of time
6 0
2 years ago
Read 2 more answers
Biogeochemical cycles definition biology
Marta_Voda [28]
The flow of chemical elements and compounds between living organisms and the physical <span>environment.</span>
3 0
3 years ago
Other questions:
  • The nurse is teaching an older adult client about different types of proteins that can be eaten. which food will the nurse ident
    6·1 answer
  • Long period comets have orbits
    9·1 answer
  • What is the control variable in the experiment
    12·1 answer
  • What are local problems that the endangerment of honeybees causes?
    13·1 answer
  • Which characteristics describe this rock sample?
    10·1 answer
  • What are the two types of energy sources??
    12·2 answers
  • Students hypothesized that adding ______________to a sixth test tube would produce the greatest amount of carbon dioxide
    12·1 answer
  • Suppose a trait is controlled by a gene that has one dominant allele (G) and one recessive allele (g).
    5·1 answer
  • What are the forms of energy that make up thermal energy?
    12·2 answers
  • What creates an electric current in<br> a battery?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!