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Vikentia [17]
2 years ago
9

Certain antibiotics become useless over time because

Biology
1 answer:
kirill [66]2 years ago
5 0
Commonly prescribed antibiotics are becoming less effective due to a number of reasons:

-overuse of antibiotics
-failing to complete the fully prescribed course by a doctor
-use of antibiotics in farming
These can lead to the effectiveness of antibiotics being reduced, and the incidence of antibiotic resistance increasing. These bacteria are commonly known as superbugs.
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Chloroplasts contain many disk-like structures known as thylakoids. What pigment do thylakoids contain?
boyakko [2]
The chloroplast contains chlorophyll<span> within its thylakoids, which absorbs light energy and gives chloroplasts its green color. Stacks of thylakoids are known as grana, which exist in the open space of the chloroplast known as the stroma.</span>
6 0
3 years ago
What muscle is commonly injured while sleeping?
wlad13 [49]

Answer:

Explanation:

If you sleep on your back, a pillow that is too thick can strain the curvature of your spine and your neck muscles. If your pillow is too thin, side-sleeping can strain the muscles on the side of your neck

7 0
3 years ago
In which population is genetic equilibrium most likely to occur?
bazaltina [42]

Answer:

RANDOM MATING

Explanation:

random mating

The Hardy Weinberg principle of genetic equilibrium defines that gene and allelic frequencies will remain the same among the generations in an infinitely large interbreeding population. In this population the mating among the members of the population is random and no selection, migration and mutation will occur.

8 0
3 years ago
The-attraction of the positive side of one water
Anna71 [15]

Answer:

B = hydrogen bonding

Explanation:

The water molecule consist of two hydrogen atom one oxygen atom. There is large electronegativity difference between oxygen and hydrogen. Both atoms are bonded through covalent bonds.

Covalent bond:

It is formed by the sharing of electron pair between bonded atoms.  

The atom with larger electronegativity attract the electron pair more towards it self and becomes partial negative while the other atom becomes partial positive.

For example:

In water the electronegativity of oxygen is 3.44 and hydrogen is 2.2. That's why electron pair attracted more towards oxygen, thus oxygen becomes partial negative and hydrogen becomes partial negative.  The partial positive end of one water molecule attracted towards the partial negative end of other moleucle. The attraction between them is called hydrogen bonding. In this way large mole are connected with each other. Hydrogen bonding is actually a weak bonding.

3 0
3 years ago
You have an unknown piece of matter in front of you that you believe to be a piece of bark from a tree. First, how would you det
natali 33 [55]

Answer:

<em>TO Determine whether Organic or not Just take some crystals on the end of a spatula and then introduce it in a flame, if it is melts or burns without white vapors then it is an inorganic compound and if you see white vapors or smoky vapors, it is organic. This is a very basic test which is used for this purpose.</em>

<em />

<em>idk the second  one..</em>

<em />

5 0
3 years ago
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