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uranmaximum [27]
4 years ago
13

Why is the stomach acidic?

Biology
1 answer:
Hatshy [7]4 years ago
8 0

Answer:

d) a and b

Explanation:

Low pH of the stomach is due to hydrochloric acid content which is secreted by parietal cells into the lumen. The hydrochloric acid functions in activating enzymes that breaks down proteins. It activates pepsinogen into enzyme pepsin, that breaks the bond that links amino acids together, a process called proteolysis.

The acidic nature of the stomach also functions in killing or inhibiting harmful bacteria that is ingested with food. Most bacterial species cannot survive in an acidic environment.

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I really need help on this
ruslelena [56]
I think its that I'm not sure

7 0
3 years ago
Ringing in the ears is called:
Elza [17]

Answer:

c. tinnitus

Explanation:

Tinnitus (a hearing impairment) is a form of  hearing of sound when no external sound is present Which is often described as a Ringing,Tinnitus may also sound like a clicking or roaring. i.e usually unclear voices or music are heard. The sound may be soft or loud, low or high pitched, and appear to be coming from one or both ears. Ranging from one person to another, the sound may causes depression or anxiety and can interfere with concentration.

Otitis externa is a condition that causes inflammation , the inflammation also covers  (redness and swelling) of the external ear canal, i.e the tube between the outer ear and eardrum.

Meniere's disease popularly called (MD), is a disorder of the inner ear that is characterized by episodes of feeling like the world is spinning (vertigo), hearing loss, and a fullness in the  ear. The cause of MD involves both genetic and environmental factors. Some of the factors include constrictions in blood vessels, viral infections, and autoimmune reactions.

Otosclerosis is a condition where one or more foci of irregularly laid spongy bone replace part of normally dense enchondral layer of bony otic capsule in the bony labyrinth. This condition affects one of the ossicles (the stapes) resulting in hearing loss, vertigo or a combination of symptoms.

Therefore from the foregoing we can conclude that Tinnitus is the correct anwser.

4 0
4 years ago
Read 2 more answers
What do i need to do????????????
Cerrena [4.2K]

Answer: the first one

Explanation: the rest are very wasteful :)

4 0
3 years ago
What is the difference between bracketed key and indented key?​
____ [38]

Answer:

<em>Bracketed and indented keys are two dichotomous/or branching keys with an ordered, numbered couplet, and spatially differentiated respectively.</em>

Explanation:

Dichotomous keys are used in the identification and classification of taxa.

Bracketed keys, or parallel keys, are easy to understand- for efficiency, these keep the first two entries of every couplet or pair being compared. It also makes use of a numbering system in the couplet choices for easy tracking.

Indented keys maintain an equal distance from the margin on the left of the pages. Successive couplets are indented til the taxon is identified.

5 0
3 years ago
Mammals do not live in the tundra, because the climate is too extreme. Please select the best answer from the choices provided T
Ivanshal [37]

my guess is False i think that is the correct answer, because their are mammals that live in the tundra.

5 0
4 years ago
Read 2 more answers
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