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trasher [3.6K]
3 years ago
15

What would happen to the other organisms if the producers disappeared?

Biology
1 answer:
frez [133]3 years ago
8 0
If the producer were to disappear then all the other organisms will either go extinct, survival of the fittest, or have to adapt to the change. 
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Write a brief paragraph as to how each condition affects blood flow
xxTIMURxx [149]

Answer:

Pulse Pressure

As shown in Figure 1, the difference between the systolic pressure and the diastolic pressure is the pulse pressure. For example, an individual with a systolic pressure of 120 mm Hg and a diastolic pressure of 80 mm Hg would have a pulse pressure of 40 mmHg.

Generally, a pulse pressure should be at least 25 percent of the systolic pressure. A pulse pressure below this level is described as low or narrow. This may occur, for example, in patients with a low stroke volume, which may be seen in congestive heart failure, stenosis of the aortic valve, or significant blood loss following trauma. In contrast, a high or wide pulse pressure is common in healthy people following strenuous exercise, when their resting pulse pressure of 30–40 mm Hg may increase temporarily to 100 mm Hg as stroke volume increases. A persistently high pulse pressure at or above 100 mm Hg may indicate excessive resistance in the arteries and can be caused by a variety of disorders. Chronic high resting pulse pressures can degrade the heart, brain, and kidneys, and warrant medical treatment.

Mean Arterial Pressure

Mean arterial pressure (MAP) represents the “average” pressure of blood in the arteries, that is, the average force driving blood into vessels that serve the tissues. Mean is a statistical concept and is calculated by taking the sum of the values divided by the number of values. Although complicated to measure directly and complicated to calculate, MAP can be approximated by adding the diastolic pressure to one-third of the pulse pressure or systolic pressure minus the diastolic pressure:

\displaystyle \text{MAP}=\text{diastolic BP}+\frac{(\text{systolic}-\text{diastolic BP})}{3}MAP=diastolic BP+

​3  

Pulse

After blood is ejected from the heart, elastic fibers in the arteries help maintain a high-pressure gradient as they expand to accommodate the blood, then recoil. This expansion and recoiling effect, known as the pulse, can be palpated manually or measured electronically. Although the effect diminishes over distance from the heart, elements of the systolic and diastolic components of the pulse are still evident down to the level of the arterioles.

This image shows the pulse points in a woman’s body.

Figure 2. The pulse is most readily measured at the radial artery, but can be measured at any of the pulse points shown.

Because pulse indicates heart rate, it is measured clinically to provide clues to a patient’s state of health. It is recorded as beats per minute. Both the rate and the strength of the pulse are important clinically. A high or irregular pulse rate can be caused by physical activity or other temporary factors, but it may also indicate a heart condition. The pulse strength indicates the strength of ventricular contraction and cardiac output. If the pulse is strong, then systolic pressure is high. If it is weak, systolic pressure has fallen, and medical intervention may be warranted.

Pulse can be palpated manually by placing the tips of the fingers across an artery that runs close to the body surface and pressing lightly. While this procedure is normally performed using the radial artery in the wrist or the common carotid artery in the neck, any superficial artery that can be palpated may be used. Common sites to find a pulse include temporal and facial arteries in the head, brachial arteries in the upper arm, femoral arteries in the thigh, popliteal arteries behind the knees, posterior tibial arteries near the medial tarsal regions, and dorsalis pedis arteries in the feet. A variety of commercial electronic devices are also available to measure pulse.

Explanation:

5 0
3 years ago
Explain how goal of today’s classification system differs from earlier systems
gladu [14]

Classification systems previously were having very different goals than modern classification systems. If we look at old eras, scientists like Aristotle  and Theophrastus  tried to classify organisms on the basis of apparent characteristics, habitat and simple other traits.

Old classification systems had alot of errors and flaws. For example they classified fish and whale in one group because they lived in water, now we know fish is amphibian while whale is mammal.

So we can say that the goal o earlier classification system were just to make groups of organisms on the basis of External features.

Goal of modern classification system:

Modern classification approach was started by Linnaeus. It focuses more on biological delimitation and evolutionary histories than mere external characteristics. It organizes organisms in groups in such a way that grouping reflects their evolutionary relatedness. It is not just specie level but also focuses on sub-specie and population level classification.


Thus modern goal is better in many terms and is more reliable than old classification goals.


Hope it helps!

3 0
3 years ago
What is an anterior pituitary hormone?
kicyunya [14]

Answer:

The pituitary gland refers to a small gland, which is situated in the sella turcica. It is considered the master gland of the body. The pituitary gland comprises two prime parts, the posterior pituitary gland and the anterior pituitary gland. The anterior pituitary gland produces six hormones and discharged them into the bloodstream.  

The following are the hormones produced by anterior pituitary gland:  

1. The growth hormone that monitors metabolism, growth and body composition.  

2. Adrenocorticotropic hormone that instigates the adrenal glands to produce steroid hormones, mainly cortisol.  

3. Follicle-stimulating hormone and luteinizing hormone, also called gonadotropins, which functions on the testes or ovaries to instigate the production of sex hormone, and maturity of sperm and egg.  

4. The thyroid-stimulating hormone that instigates the thyroid gland to discharge thyroid hormones.  

5. Prolactin that instigates the production of milk.  

5 0
3 years ago
The β chain of adult hemoglobin is composed of 146 amino acids of a known sequence. in comparing the normal β chain with the β c
Kipish [7]

Out of the following given choices;

a.            Valine instead of glutamic acid in the sixth position

b.            Glutamic acid replacing valine in the first position

c.             Extensive amino acid substitutions

d.            Trinucleotide repeats

e.            Frameshift substitutions

The answer is A. this is caused by a mutation in the beta thalassemia genes on one of the 46 human chromosomes (chromosome #11) of the individual. The alpha subunit is normal in people with sickle cell disease. When sickle hemoglobin releases oxygen in the peripheral tissues, the molecules tend to stick together and form long chains or polymers. These rigid polymers distort the cell and cause it to bend out of shape from the normative disc shape.






8 0
3 years ago
Which type of mutation is responsible for small changes in a trait
Naddika [18.5K]

<u>Substituion mutation</u>  is responsible for small changes in a trait.

Explanation:

This kind of mutation merely changes the type of nucleotide in the DNA  sequence. The mutation does not cause a frameshift as would a deletion of addition mutation.

A substitution mutation would at worst change an amino acid in the translated protein. This would likely have a slight effect on how the protein folds into an active protein. On the other hand, mutations that cause frameshifts have the biggest effect on the proteins. They change all the amino acids of a protein downstream of the point of mutation.

Learn More:

For more mutations check out;

brainly.com/question/12334066

brainly.com/question/14648404#

#LearnWithBrainly

8 0
3 years ago
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