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Alik [6]
3 years ago
8

Which of the following is considered a modified stem?

Biology
1 answer:
Zanzabum3 years ago
8 0
<span>The answer is tuber. The tuber is the modified stem enlarged for food storage and asexual reproduction. For instance, a potato is a tuber. The tuber provides nutrients for the growth in the next season so when spring comes, it regenerates new shoots.</span>
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Which statement explains endosymbiosis theory?
Sergeeva-Olga [200]
The endosymbiosis explains how eukaryotic cells may have evolved from prokaryotic cells.
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3 years ago
The nearest organ to which the heart supplies oxygenated blood is​
Damm [24]

Answer:

Myocardium

The Heart itself. The nearest organ is the blood supplied to the Myocardium (Heart muscle) by the Heart pumping oxygenated blood through the Coronary Arteries.

3 0
3 years ago
What connects the proximal and distal convoluted tubules?
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I believe that the loop of Henle is the hairpin structure that connects the proximal and distal convoluted tubules. The loop of Henle is composed of the ascending and the descending limb. The descending loop of Henle connects the proximal convoluted tube with the ascending limb of the loop of Henle, while the ascending loop of Henle connects the descending limb of the loop of Henle with the distal convoluted tubule. 
7 0
3 years ago
What is the role of alveoli in respiration
Burka [1]

Answer:

<em>What is the role of alveoli in respiration ⇔ Alveoli are the place where the exchange of gases takes place. The outer part of alveoli has blood vessels. These vessels are carrying Co2 rich blood to exchange at the alveoli. The O2 from the alveoli is diffused into the blood while co2 is sent into the lungs. That O2 rich blood is then carried to heart to pump it to the whole body. and this process continues. </em><em>The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out.</em>

Explanation:

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<u><em>I hope this helps and have a good day!</em></u>

5 0
1 year ago
huntington disease is a dominant disease caused by expansion of the trinucleotide repeat region of the htt gene that results in
Travka [436]

By haphazardly introducing a transgene harboring a disease-causing mutant variant of the HTT gene into the genome of a mouse or primate, it is possible to produce an animal model with the majority of the symptoms of this condition. Here option B is the correct answer.

Huntington's disease is an uncommon, genetic condition that results in the gradual degeneration of brain nerve cells. Huntington's illness, which frequently results in mobility, cognitive, and psychological problems, has a substantial impact on a person's functional capacities.

A DNA region known as a CAG trinucleotide repeat is involved in the HTT mutation that causes Huntington's disease. Three DNA-building building pieces that are repeated several times in a row make up this region.

Complete question:

Huntington's disease is a dominant disease caused by the expansion of the trinucleotide repeat region of the Htt gene that results in the production of a Huntingtin protein with an expanded number of glutamines. An animal model with most features of this syndrome could be created by

A - knocking in a wild-type copy of the Htt gene to a mouse or primate genome.

B - randomly inserting a transgene containing a wild-type allele of the Htt gene to a mouse or primate genome.

C - randomly inserting a transgene containing a disease-causing mutant allele of the Htt gene into a mouse or primate genome

D - knocking out one copy of the wild-type Htt gene from a mouse or primate genome.

E - knocking out both copies of the wild-type Htt gene from a mouse or primate genome.

To learn more about Huntington's disease

brainly.com/question/12572808

#SPJ4

3 0
1 year ago
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