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3 years ago

A student makes the analogy that the cardiovascular system is like a highway. Why is this a good analogy?

Biology

2 answers:

viva [34]3 years ago

7 0

Blood flows down certain directions.

ivann1987 [24]3 years ago

5 0

Answer:

The correct answer is that the blood transports materials to and from distinct parts of the body.

Explanation:

As an essential biological fluid, blood flows spontaneously in the blood vessels and the heart, mainly via the pumping of the heart. It comprises plasma, aqueous fluid, and various cells like red blood cells that offer it its color.

The blood helps in the mediation of nutrients and oxygen, which are essential for performing important procedures of the body. It also assists in translocating molecules and cells of the immune system to various tissues, and to disperse hormones all through the body.

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Which law of motion is accociated with inertia

zaharov [31]

Newtons first law of motion have a very nice day

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3 years ago

Place the following terms in the correct order from SMALLEST to LARGEST:

QveST [7]

DNA, nucleosome, coils, supercoils, chromosome.

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3 years ago

1. Which of the following correctly compares the changes that take place in an ecosystem during primary succession and secondary

mr Goodwill [35]

The correct answers are as follows:
1. A.
There are basically two types of succession, they are primary and secondary succession. Primary succession refers to the type of succession that occurs in new and bare areas where the soil present is unable to sustain the growth of plants. An example of primary succession area is an area with sand dunes that is freshly formed. Primary succession usually occur over a long period of time. Secondary succession is a type of succession that occur on a land which was disturbed by hazardous events such as fire outbreak, flood, etc. Secondary succession occurs much faster than the primary succession.

2. D
There are two types of factors that affect any particular ecosystem, these are abiotic and biotic factors. The abiotic factors refers to non living factors such as temperature, relative humidity, rainfall, etc. while the biotic factors refer to the living factors. Looking at the options given above, one will see that only option D has living factor, which is predators. All other options have abiotic factors.

6 0

3 years ago

An analysis of a cell indicated a high lipid content in the membranes, a high protein content in the vesicles being mobilized an

Anon25 [30]

The option that best illustrates the similarity and difference in the elemental makeup of these molecules is that carbohydrates and lipids both contain carbon, hydrogen, and oxygen atoms, while the proteins contain nitrogen in addition to those three elements. That is option B.

Carbohydrates are macromolecule found is food substances that plays a vital role of energy supply to the body.

It is made up of chemical elements such as carbon,hydrogen and oxygen in the ratio of 1:2:1.

Lipid is another macromolecule found in food which is an energy reserve for the body.

Lipids are made up of elements seen in carbohydrates such as carbon, hydrogen and oxygen but contain many more hydrogen atoms than oxygen atoms.

Proteins are another type of macromolecule found in food which helps in body building and repair of worn out tissues.

Proteins are made up of elements seen in carbohydrates and lipids with the addition of nitrogen atom.

Therefore, carbohydrates and lipids both contain carbon, hydrogen, and oxygen atoms, while the proteins contain nitrogen in addition to those three elements.

Learn more about proteins here:

brainly.com/question/10058019

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2 years ago

The image shows the evolution of a species of fish. A few fish from a population developed different social behaviors and evolve

adell [148]

According to the image, the fish underwent sympatric speciation. The new species of fish had mating seasons that were different from that of the original fish. Because of the differences in mating seasons, the fish underwent reproductive isolation. This mode of isolation would be temporal.

Sympatric speciation happens within a population of an organism that gets isolated reproductively due to differences in their mating periods. This time dependent isolation is called temporal isolation. Example, a fish population can split into two if some of the fishes start mating early in the spring while the rest mate late in the autumn. The spring-mating population will not become compatible to mate with the late-autumn-mating population.

7 0

3 years ago

Read 2 more answers