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2 years ago

How do small intestinal epithelial and root hair cells function in nutrient procurement?

1 answer:

8 0

<span>Villi are hair-like structures covered with epithelial cells measuring 1.5 mm that line the mucous inner membrane of the small intestine. The epithelial cells of the villi contain microvilli and are responsible for the absorption of nutrients. Being so small and numerous, they effectively increase the absorptive surface area of the small intestine. When the surface area increases, this is the time they absorb the nutrients. As for plants' root hair cells, they receive nutrients through osmosis. Root hair cells are adapted for this by having a large surface area to speed up osmosis. The absorbed water and minerals are transported through the roots to the rest of the plant where it is used for different purposes: It is a reactant used in photosynthesis. As we can see, both of them utilize increasing their surface area.</span>

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Which of the following describes an effect of particulate matter on health?

MakcuM [25]

Answer:

<em>Exposure to such particles can affect both your lungs and your heart. Numerous scientific studies have linked particle pollution exposure to a variety of problems, including: ... decreased lung function. increased respiratory symptoms, such as irritation of the airways, coughing or difficulty breathing.</em>

8 0

2 years ago

Supply-and-Demand Schedule for Cell Phones Price of Cell Phones Quantity Supplied of Cell Phones Quantity Demanded of Cell Phone

k0ka [10]

Answer:

$150, $200

Explanation:

A schedule that shows relationship between quantity supplied and quantity demanded is used to estimate the equilibrium quantity and price where there is a balance between the buyer's willingness to buy and the seller's willingness to sell.

Below this equilibrium point there is excess of quantity demanded over limited supply.

Above equilibrium there is excess supply and less demand.

According to the given schedule the equilibrium price is $100 where demand and supply are both 300 units.

The prices at which there are excess supply is given below

At $150 400 units is supplied against 250 units demanded

At $200 500 units are supplied against 0 units demanded

5 0

2 years ago

In a particular species of frogs, black spots are a dominant trait and their absence is a recessive trait. In a population of fr

kipiarov [429]

The expression which is the correct way to calculate the frequency of the dominant allele is 134/200. Thus, the correct option is D.

<h3>What is Allelic frequency?</h3>

The allelic frequency may be defined as the sum total of all the alleles of a gene in a population. It represents the overall genetic diversity within a population.

The allelic frequency is calculated by the formula when the genotypes are given in number. It is as follows:

2 × Number of Purebred dominant + Number of heterozygous/ 2× Total number of individuals in a population.

∴ Allelic frequency of dominant allele = 2 × 50 + 34/ 2× 100 = 134/200 = 0.67.

The allelic frequency of the Dominant allele is 0.67 while the allelic frequency of the recessive allele is 0.33.

Therefore, it is well described above.

To learn more about Allelic frequency, refer to the link:

brainly.com/question/14649601

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1 year ago

FASTEST ONE GET BRAINLIEST!!!! make a list of 3 foods that contain carbs

artcher [175]

Answer:

Potatoes, Corn, Lentils.

Explanation:

5 0

3 years ago

Read 2 more answers

Is the current rate of species loss 10 times the typical rate of extinction?

Anika [276]

The natural rate of extinction as assumed by science is about 5 species per year. Currently scientists estimate we are losing species at 1000-10000 times that rate, with multiple species disappearing every day. A note on this idea is that the average extinction rate gives an unrealistic depiction of nature when we consider the catastrophic extinction events that ended the dinosaurs and shaped the ice age.

7 0

3 years ago