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Misha Larkins [42]
3 years ago
13

Which of these BEST describes why certain bacteria have become resistant to penicillin?

Biology
2 answers:
hichkok12 [17]3 years ago
6 0
Antibiotic resistance occurs when bacteria change in some way that reduces or eliminates the effectiveness of drugs, chemicals, or other agents designed to cure or prevent infections. The bacteria survive and continue to multiply causing more harm. Bacteria can do this through several mechanisms.
sveta [45]3 years ago
3 0
<span>Penicillin was so heavily prescribed by doctors that it led to certain, more fit, strains of bacteria to be able to survive.

</span>
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Hydrogen bonds are part of what important molecules in organisms?
AnnZ [28]

Answer:

Water!

Explanation:

Hydrogen bonds occur due to water molecules being polar (which results from the uneven distribution of their electrons), thus causing come charge to be remaining in the Oxygen and Hydrogens in water molecules. This causes Oxygens and Hydrogens from <em>different</em> water molecules to attract each other as well! Most importantly, however, hydrogen bonds allow water molecules to have its cohesive properties, which allows it to do many of things water is essential for. Hint: capillary action.

Hope it helped! :)

7 0
3 years ago
Hypernatremia is a condition that can occur in anyone, especially athletes. It’s also a situation that can occur where people do
andre [41]

Answer:

The correct answer is - drinking more water and fluid.

Explanation:

Hypernatremia is a condition in which the body losses too much water or body fluid and the case of dehydration took place which leads to the low serum sodium concentration. The serum sodium concentration is under 145 mmol/L in this condition.

This occurs due to loss of body fluid due to sweating, diarrhea injury, or drinking very little water. To correct or treat this treatment in a healthy person it is asked to drink plenty of water and other fluids to maintain body fluids.

8 0
3 years ago
How do immunoglobulin genes code for a seemingly infinite variety of antibodies?
Ivanshal [37]
<span>Answer: Think of DNA-there are only 4 bases, but different combinations give infinite possibilities. And the same for amino acids and proteins. Immunoglobulins work on a similar principle. Different VDJ segments are combined for the heavy chain of an antibody. Different VJ segments are combined for the light chain. Other ways: Random nucleotides may be added or removed between the gene segments. There are also different combinations of light and heavy chains. Antibodies can be any of the 5 isotypes: IgA, IgM, IgG, IgE, IgD. I'm not going to go into detail as this answer would take too long to write. Do some literature searching on B cells, V(D)J recombination, RAG genes, class switching.</span>
6 0
4 years ago
What is the non-reducing and reducing end of a sugar? How is a reducing sugar determined?
Vanyuwa [196]

Answer:

A sugar is categorized into two types, that is, non-reducing sugar and reducing sugar. A sugar, which exhibits a free ketone or aldehyde and can function as a reducing agent is known as reducing sugar. On the other hand, a non-reducing sugar does not comprise a free ketone or aldehyde group, and it cannot function as a reducing agent. With the help of Fehling's test one can determine the amount of reducing sugars present in a solution.

7 0
3 years ago
The portion of the diencephalon that acts as a relay station for sensory impulses traveling to the sensory cortex is the _______
Hitman42 [59]

Answer: Thalamus

Explanation:

The thalamus part of the brain is known as the relay station for all the sensory information. This information can be any sought of smell, light, taste et cetera.

It is relayed further via thalamus. Myelinated fiber bundle originates from the lateral surface of thalamus and it terminates at the cerebral cortex.

It is a relay station for the information from brainstem, spinal cord and cerebrum towards the cortex.

4 0
3 years ago
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