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ivann1987 [24]
3 years ago
8

Briefly describe what occurs when a red blood cell is placed in water (a hypotonic solution).

Biology
1 answer:
AleksandrR [38]3 years ago
3 0
When a red blood cell is placed in water, the water molecules will enter the cell rapidly as a result of osmosis. Osmosis is the process by which molecules moves through a cell permeable membrane from the region of lower concentration to that of higher concentration.
The inside of the red blood cell is more concentrated than the water in which it is placed, so water will move into the cell via osmosis. 
This will make the cell to swell up and to burst open.<span />
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A patient is in an urgent care center and is receiving treatment for mild hyponatremia after spending several hours doing garden
lyudmila [28]

Hyponatremia occurs in an individual when the person has low sodium level in his or her body. In order to have the patient to get his sodium levels back to normal, drug therapy would be used. The nurse should treat the condition with drug therapy through oral administration of the sodium chloride tablets as oral ingestion of tablets is much effective in situations like this.

6 0
3 years ago
For each population description, identify which Hardy-Weinberg assumption is violated?
zavuch27 [327]

Answer:

4. A large and isolated population of squirrels in a relatively stable environment in which no genetic mutations are occurring and mating between males and females is random.

Explanation:

1. A small and isolated population of seals living in a stable environment with no genetic mutations.❌

1. false

Hardy-Weinberg assumption is not violated for a small population as seen in this case.

2. A large population of fish where females mate with males based on size.❌

false

Hardy-Weinberg assumption is not violated for an instance where mating is not random as seen in this scenario.

3. A population of birds with no genetic mutations that often mate with members of neighboring bird populations.❌

False

Hardy-Weinberg assumption is not violated for where gene flow is seen among population in this scenario.

4. A large and isolated population of squirrels in a relatively stable environment in which no genetic mutations are occurring and mating between males and females is random.✔

True

Hardy-Weinberg assumption is violated for in this situation due to large population size.

5. A small population of spiders living in an environment that strongly favors larger individuals.❌

false

Hardy-Weinberg assumption is violated for a small population and natural selection occurring as its obvious in this case.

There are five primary Hardy-Weinberg assumptions:

A. no mutation,

B. random mating,

C. No gene flow,

D. infinite population size,

E. No selection.

If the assumptions are exempted in a gene, the population of that gene might undergo evolution causing a resultant change in the gene's allele frequencies.

5 0
3 years ago
Which of the following best describes a adaptation brought about by natural selection
PtichkaEL [24]

Answer:

I'm not sure what the answers are but

Polar bears begin to eat goose eggs as a way to survive when seals, their usual prey, are not available.

Mountain goats restrict their range to higher altitudes because of warmer low-altitude temperatures.

Snowshoe hares change their fur from white to brown to match their warm summer habitats.

Early humans learn to make tools like flint arrows and knives to help them hunt more efficiently.

if these are your options then the answer is

C) Snowshoe hares change their fur from white to brown to match their warm summer habitats.

5 0
3 years ago
What do the letters inside the grid of a punnett square represent?
Aneli [31]

Answer:

The correct answer is - Genotype of the offspring

Explanation:

Punnet square is a diagram which is used to predict and show the genotype of offspring that is produced by a cross between male and female gametes. This approach was given by Reginald C. Punnett.

Each grid have a genotype that can determine the phenotype of offspring. The letters used in to fill these grids can be made up of uppercase letters, lower case letters or both. The allele shown in upper case letters shows that the allele is dominant and the allele which is in lowercase letter is a recessive allele.

Therefore the letters inside the grid of a punnet square represents the genotype of the offsprings.

4 0
3 years ago
Which of the following would most likely be key to gathering evidence that the RNA World hypothesis is valid?
muminat

Answer:

The answer is; Simulation of early Earth conditions and long-term study of the resulting molecules

Explanation:

It is believed that the first molecules on earth were made spontaneously through reaction spurred by energy from lightning and also the heat from the earth. It is believed that these molecules over time then formed polymers through the catalysis by metals in the oceans. These polymers were able to self-replicate and also act as enzymes since they were able to fold up. This hypothesis was coined by Carl Woese, Francis Crick and Leslie Orgel in the 1960s. To prove it, the then conditions of early earth need to be replicated, data collected, and analyzed.

Read more on Brainly.com - brainly.com/question/2321489#readmore

5 0
3 years ago
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