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
Rina8888 [55]
3 years ago
9

A Norovirus can be considered as a 30 nm in diameter spherical particle, made of protein and DNA·The Noroviruses are known to be

highly infective. As few as 10 viruses are enough to cause infection in a human. a) Suppose that an infected individual releases 5 cm3 of fluid containing 10% of Noroviruses by volume. Calculate the number of Noroviruses in this sample and the number of humans that could be infected with these viruses. What percentage of the human population on Earth (assumed 7 billion) could be infected? b) Could the virus spread around and infect all these humans only by diffusion? Calculate the diffusion coefficient and the time needed for one virus to diffuse to a length of 1 meter at 20°C (viscosity of water being 1.0x103 kg m s)?
Biology
1 answer:
mariarad [96]3 years ago
8 0

Answer:

For part A answer is,

=5.04 x 10^7 % which means that all the humans will be affected.

For Part B,

Time required is = 529.649 Years seconds.

Explanation:

See attachment for detailed explanation.

Download pdf
You might be interested in
What purple-flowered spice is often used in making soaps and potpourri?
Korolek [52]
Lavender is a purple colored flower which is often used in making soaps and potpourri.
Potpourri is a mixture of dried flowers which looks very beautiful and gives pleasant aroma to the air.
Lavender flowers have become recently very popular.
Spices for soaps and potpourri are prepared after drying the flower. it is used in many things like lotions and other body care products.
8 0
4 years ago
How many aluminum atoms are there in a 15.1 gram soda can?
MariettaO [177]
A soda can is made from aluminum metal. To determine how many atoms of this element is present in a certain mass of the can, we need to convert the mass into units of moles by using the atomic mass of aluminum which is 26.98 g per mol. Then, we use the Avogadro's number. It represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles or vice versa.

moles Al = 15.1 g Al ( 1 mol / 26.98 g ) = 0.56 mol Al
atoms Al = 0.56 mol Al ( 6.022x10^23 atoms / 1 mol ) = 3.32x10^23 atoms

OPTION A would be the closest.
6 0
4 years ago
The genetic code of a dna molecule is determined by a specific sequence of
krek1111 [17]

Answer:

A specific sequence of nucleotides.

Explanation:

DNA, which is a nucleic acid, is a molecule that is made up of nucleotides. Nucleotides have 4 types for any DNA which are A, G, C and U respectively Adenine, Guanine, Cytosine, Thymine.

The genetic code of any DNA molecule is determined solely by the specific sequence that these 4 nucleotide molecules form in the cell.

I hope this answer helps.

4 0
3 years ago
Read 2 more answers
One animal dies in a desert area. With the help of scavengers and bacteria it decomposes completely in the hot sun. A second ani
Wewaii [24]
The one that dies in a desert area is most likely to only leave a fossil

The one that is covered in sediment can also leave a fossil, however, there may be chances for it to save other 'flesh'

hope this helps
4 0
3 years ago
What are some ways that Photosynthesis and Cellular Respiration are similar?
musickatia [10]
Also, cellular respiration is c6h12o6 + o2 -> h2o + co2 and energy and photosynthesis is backwards of photosynthesis. It’s light energy + co2 + water to make c6h12o6 and o2. So the reactants in cellular respiration are the products in photosynthesis and the products in cellular respiration are the reactants of photosynthesis
7 0
4 years ago
Other questions:
  • What is the element's name and symbol? Is it a metal, nonmetal, or metalloid? Which family does it belong to? How many protons,
    11·1 answer
  • Which biome is commonly found near the equator? O tropical forest temperate forest O temperate grassland O coniferous forest
    6·2 answers
  • Would you describe yourself as belonging to a specialist species or generalist species? Give reasons for your choice
    14·2 answers
  • 2. Describe, in complete sentences, the relationship between the predator and prey populations in the activity. How does a chang
    14·1 answer
  • On which type(s) of island would you expect species richness to be greatest?
    6·1 answer
  • In which scenario would mitosis be least desirable in terms of a species' survival? (2 points) Select one: a. A species has litt
    12·2 answers
  • In an experiment to determine the effects of radiation on the germination of seeds, a factor that has to be controlled is
    7·2 answers
  • Match the given symbol or molecular formula to the term that best describes it.
    14·2 answers
  • What is DNA simplified answer please
    13·2 answers
  • A mom, heterozygous for type B blood, has a baby with type AB blood, what possible blood types could the baby's father have?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!