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STALIN [3.7K]
3 years ago
8

A student with a common cold sneezes onto a facial tissue, throws it into a wastepaper basket, but misses, and the tissue falls

onto the floor. A custodian walks by, picks up the tissue, throws it in the basket and then rubs his nose with his fingers later. A few days later the custodian develops the symptoms of common cold. Which of the following is NOT CORRECT?
a. the student is a reservoir
b. the tissue is a fomite
c. the custodian acquired the cold via indirect
d. contact the portal of entry for the custodian was the nose
e. this is an example of droplet transmission
Biology
1 answer:
LekaFEV [45]3 years ago
5 0

Answer:

d and c

Explanation:

hope im correct b.t.w plz help me at brainly.com/question/23664340

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The four main types of macromolecules are organic. What does organic
inn [45]

Organic  means it is made only of carbon.

Explanation:

The all four types of macromolecule are organic means these all four type of macromolecule made up of carbon. These four macro molecules are carbohydrate, protein, nucleic acid and Proteins.  All are essential cell component perform a wide array of function.

Biological macromolecule is organic so they contain carbon. A part of carbon they contain nitrogen, hydrogen and additional minor element.   Enzymes and some hormone are example of protein.

4 0
3 years ago
If a parent with AB blood and a parent with
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Answer:

O blood is a recessive trait, so none of the children will have O blood. The genes for either type A or Type B will be determined by the egg/sperm being fertilized with the reproductive cell of the other parent. the probability of receiving either of the gene versions is 1/2, so half of the children will have A blood and the other half will have B blood

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3 years ago
1. Han Solo and Leia fall madly in love and have one child (Ben). What is the chance that they will have a child who is strong w
Andreas93 [3]
1.
 Han Solo genotype: ff
Offspring genotypes: Ff, ff
There is a 50% chance the child will have the force.

2.
 Let f be webbed feet and F be non-webbed feet
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Possibility of webbed feet in offspring: 0%

3.
Yes, it is possible if both parents are heterozygous. 25% of offspring will be grey.

4.
Pheonotypes: Hairy and non-hairy fur
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5.
Parental genotypes: RR and RL
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6.
Genotypes: BW
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7.
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8.
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7 0
3 years ago
What percentage of genetic material is the same in everyone?
nika2105 [10]
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8 0
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Margaret [11]

Answer: the membrane channel

Explanation:

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Thus the water will move from an area of high concentration  to an area of low concentration, until the system reaches a steady state called equilibrium- after this, there will be no net movement of water. Similarly via osmosis, the water passes through the membrane due to the difference in osmotic pressure on either side of the phospholipid bilayer this means that the water moves from regions of high osmotic pressure/concentration to regions of low pressure/ concentration to a steady state.

The dialysis tubing mimics a semi permeable membrane; it only allows water and small molecules of iodine to cross into the bag containing starch. The tubing is impermeable to starch;  these large molecules require the aid of protein omplexes called membrane channels, in order to move across the membrane and against the concentration gradient.

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3 years ago
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