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alex41 [277]
3 years ago
11

Explain what is positive geotropism​

Biology
1 answer:
spayn [35]3 years ago
8 0
The roots exhibit positive geotropism or growth with gravity, while the stem exhibits negative geotropism or growth against gravity.
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Which is true of the anterior horns of the spinal cord?
Alja [10]

Answer:

They house cell bodies of somatic motor neurons.

Explanation:

8 0
3 years ago
Read 2 more answers
The sickle cell version of the gene that causes sickle cell disease is recessive. Suppose that two parents with no symptoms have
yKpoI14uk [10]

Answer:

The genes that the child inherited from the parents is the SS gene

Explanation:

The genetic composition of the haemoglobin genotype is given by two gene variants; A which is dominant and S which is recessive. As such, an individual can be AA, AS or SS. Individuals that are AA and AS do not show traits of the disease, but SS individuals have sickle cell anaemia.

From this example, since both parents have no symptoms and their child have sickle cell, their genotypes most likely were AS and AS. Let me show you how:

           A              S

A        AA            AS

S       AS              SS

From the cross above, there is a 1 in 4 chance that if both parents were AS, their child will be SS. Any other composition from the parents will not produce an SS offspring. Hence the genes that the child inherited from the parents is the SS gene.

6 0
3 years ago
is the degree of change that occurs in autonomic, neuroendocrine, and/or immune responses as a result of stress.
vesna_86 [32]

<u>Reactivity </u><u>is the degree of change that occurs in </u><u>autonomic</u><u>, neuroendocrine, and/or immune responses as a result of stress.</u>

How does the autonomic nervous system response to stress?

  • The fight-or-flight reaction, commonly known as the autonomic nervous system, is what causes arousal and produces testosterone in the male anatomy.
  • It also stimulates the sympathetic nervous system.
  • The hormone cortisol, which is made by the adrenal glands, is released by the body in response to stress.

What is the stress response system?

  • The body's emergency response system is known as the stress response, also known as the "fight or flight" response.
  • In an emergency, it will keep you secure. Your body and mind will react physically and mentally to the events you see.

Can stress cause autonomic?

  • Stress-related autonomic reactions frequently result in medical attention.
  • The results of autonomic stress responses can include sensations of heat and cold, palpitations, tachycardia, nausea, abdominal pain, diarrhea, and constipation.

Learn more about autonomic nervous system

brainly.com/question/1034520

#SPJ4

7 0
2 years ago
Sodium's atomic number is 11 what does that tell you about an atom of sodium?
Klio2033 [76]
The answer to this question is:

<span>Sodium's atomic number is 11 what does that tell you about an atom of sodium?
</span><span>B-"it contains 11 protons"

Hoped This Helped,</span><span>Caitlyndecker
Your Welcome :)</span>
6 0
3 years ago
how did cyanobacteria contribute to the evolution of multicellular organisms like the plants and animals we see today
zvonat [6]
Cyanobacteria had a role in the evolution of eukaryotic cell, more precisely their organelles. It has been shown that chloroplast, cell organelles found in some eukaryotic lineages, which are specialized in performing the photosynthesis evolved from cyanobacteria through the process called endosymbiosis. In this process, photosynthesizing cyanobacteria was engulfed in some ancient eukaryotic cell. Eukaryotic cells have evolved from the endosymbiotic events.
<span>By producing and releasing O2 (as a byproduct of photosynthesis), cyanobacteria are thought to have converted the early oxygen-poor, reducing atmosphere into an oxidizing one. This caused the Great Oxygenation Event which dramatically changed the Earth's life forms and led to the formation of multicellular organisms.</span>
7 0
3 years ago
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