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3 years ago

How can scientific conclusions be reliable, but also able to be changed with the introduction of new evidence

Biology

1 answer:

aleksklad [387]3 years ago

8 0

Answer:

scientific conclusions are reliable as they are helpful for many things however it is true that after the evolution of new ideas the old theory have some changes or may change fully or may be proved wrong but yeah the old theories are still helpful for many reasons and things.

so I think scientific conclusions are reliable

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At list of processes associated with CO2 transport in the blood. Classify each process as occurring predominantly at peripheral

nataly862011 [7]

Answer:

a. CO2 is produced ---> occurs predominantly at the peripheral tissues

b. CO2 + H20 to form H2CO3 ---> occurs predominantly at the peripheral tissues

c. Bicarbonate combines with H+ to form H2CO3 ---> occurs predominantly in the lungs

d. CO2 diffuses into blood ---> occurs predominantly at the peripheral tissues

Explanation:

Peripheral gas exchange or internal respiration is the gaseous exchange that occurs between the blood and the tissues of the body across the walls of the peripheral capillaries in contrast to external respiration which is the exchange of respiratory gase, carbon (iv) oxide and oxygen, between the body and the external environment occuring at the lungs.

During respiration, carbon dioxide is removed from the body through the lungs while oxygen is taken into through the lungs.

Carbon dioxide is produced as a waste product of metabolism by the tissues of the body. Removal of carbon dioxide is of utmost importance and occurs in three distinct ways in the body:

1. First carbon dioxide is transported in dissolved form in the blood to the lungs.

2. Carbon dioxide combines reversibly with hemoglobin to form carbaminohemoglobin and is transported to the lungs where it dissociates from hemoglobin is removed via expiration

3. Carbon dioxide is transported in the form of bicarbonate in blood to the lungs where it removed by the following process : i) carbon dioxide produced in the peripheral tissues diffusers into the and into the red blood cells. (ii) The enzyme carbonic anhydrase converts it to carbonic acid (iii) Carbonic acid dissociates into bicarbonate and hydrogen ions. Hydrogen ions binds to haemoglobin while bicarbonate is exchange with chloride ion in the plasma. (iv) Bicarbonate is transported to the lungs in blood plasma. (v) At the lungs, bicarbonate renters the red blood cells in exchange for chloride ions. The bicarbonate combines with hydrogen ions released from hemoglobin to form carbonic acid. Carbonic acid is broken down to carbon dioxide and water by carbonic anhydrase in the red blood cells. Carbon dioxide diffusesout into the lungs and is expelled.

Therefore, the processes in the question above can be classified thus:

a. CO2 is produced ---> occurs predominantly at the peripheral tissues

b. CO2 H20 to form H2CO3 ---> occurs predominantly at the peripheral tissues

c. Bicarbonate combines with H+ to form H2CO3 ---> occurs predominantly in the lungs

d. CO2 diffuses into blood ---> occurs predominantly at the peripheral tissues

8 0

3 years ago

Please help !!!!!!!!!!!!!!!!!!

grandymaker [24]

The answer is A. the substrate serves as a key to activate the enzyme.

8 0

3 years ago

Read 2 more answers

What are the equations to photosynthesis AND cellular respiration

Shtirlitz [24]

Photosynthesis: <span>6CO2 + 6H2O + light energy = C6H12O6 + 6O2.
</span>
Cellular Respiration: C6H12O6 + O2 + H2O + ATP

I hope this helps you! Good luck :)

8 0

3 years ago

Based on the graph above, how is the population of older female elephants different from the younger female elephants

Ludmilka [50]

Population of older female elephants different from the younger female elephants is described below.

Explanation:

THE OLDEST ELEPHANTS wandering Mozambique’s Gorongosa National Park bear the indelible markings of the civil war that gripped the country for 15 years: Many are tuskless. They’re the lone survivors of a conflict that killed about 90 percent of these beleaguered animals, slaughtered for ivory to finance weapons and for meat to feed the fighters.

Hunting gave elephants that didn’t grow tusks a biological advantage in Gorongosa. Recent figures suggest that about a third of younger females—the generation born after the war ended in 1992—never developed tusks. Normally, tusklessness would occur only in about 2 to 4 percent of female African elephants.

New, as yet unpublished, research she’s compiled indicates that of the 200 known adult females, 51 percent of those that survived the war—animals 25 years or older—are tuskless. And 32 percent of the female elephants born since the war are tuskless.

A male elephant’s tusks are bigger and heavier than those of a female of the same age, says Poole, who serves as scientific director of a nonprofit called ElephantVoices. “But once there’s been heavy poaching pressure on a population, then the poachers start to focus on the older females as well,” she explains. “Over time, with the older age population, you start to get this really higher proportion of tuskless females.”

“The prevalence of tusklessness in Addo is truly remarkable and underscores the fact that high levels of poaching pressure can do more than just remove individuals from a population,” says Ryan Long, a behavioral ecologist at the University of Idaho and a National Geographic Explorer. The “consequences of such dramatic changes in elephant populations are only just beginning to be explored.”

7 0

3 years ago

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Why is it important that scientific theories can be modified as new information comes to light

nadya68 [22]

It is important because scientific theories are not proven, hence the reason they are called theories. Adding information overtime to these theories can help validate the reliability of said theories.

8 0

4 years ago