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balandron [24]
3 years ago
13

Celery stalks that are immersed in fresh water for several hours become stiff. Similar stalks left in a 0.15 M salt solution bec

ome limp. From this we can deduce that the fresh water ________.
Biology
1 answer:
mixer [17]3 years ago
3 0

Answer:

From this it can be deduced that the fresh water is hypotonic and the salt solution is hypertonic to the cells of the celery stalks.

Explanation:

When submerged in water, the celery stalks become stiff and hard, this shows that water moves within the stalk, thus, water is hypotonic in comparison to the celery stalk. Therefore, water moves from the region of higher concentration to the region of lower concentration.  

When the same celery stalk is administered into the 0.15 M solution it turns soft, which shows that water from the celery stalk moves out. Thus, the salt solution is hypertonic in comparison to the celery stalk. Therefore, freshwater is hypertonic and the solution of salt is hypertonic to the celery stalk cells.  

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Which area of the brain may be affected when a client with anxiety disorder shows symptoms related to respiratory activation and
Brilliant_brown [7]

Answer:Medulla and pons.

Explanation: Brain is the part of the body that controls all body activities. Medulla and pins are part of the brain.

Medulla controls respiration. It receives signals from chemoreceptors and send to muscles that allow respiration. It also regulate heart rate and blood pressure to ensure adequate blood supply circulate the body system.

Medulla also help in adjusting respiration when there is need and also generates normal breathing movements by stimulating the nerve that supplies the diaphragm. This pons are located under the medulla and it controls speed of involuntary respiration( respiration

Not under conscious control).

When a patience shows a disorder in respiration, invountary respiration, increase in heart rate its a disorder of Medulla and pons also called Brainstems

3 0
3 years ago
What part of the rotifer is responsible for crushing food?
frozen [14]

Answer:

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The Monogononta, which have males, produce fertilised 'resting eggs' which can resist desiccation (drought) for long periods.[11]

The Bdelloids, who have no males, contract into an inert form and lose almost all body water, a process known as cryptobiosis. Bdelloids can also survive the dry state for long periods: the longest well-documented dormancy is nine years. After they have dried, they may be revived by adding water. In this, and several other ways, they are a unique group of animals.[12]

Explanation:

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Rotifers have a number of unusual features. Biologists suppose that these peculiarities are adaptations to their small size and the transient (fast changing) nature of its habitats.

8 0
3 years ago
If photosynthesis produces cellular energy (atp) from sunlight, why do plant cells also need to perform cellular respiration, a
Reika [66]
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8 0
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andrey2020 [161]
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5 0
3 years ago
5. How many pairs of chromosomes are there in each<br> human *body cell?
julia-pushkina [17]

Answer:

In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46.

Explanation:

5 0
3 years ago
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