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ra1l [238]
3 years ago
15

Cyanobacteria is said to be the first organism on Earth. What is the BEST explanation for its importance to scientists?

Biology
1 answer:
Alborosie3 years ago
8 0

The correct answer is A. It is believed to have pumped enough oxygen in earth's atmosphere to create eukaryotic cells.

Cyanobacteria can also be referred to as cyanophyta.

Now that they are phylum of bacteria they are well known to get their energy in the process of photosynthesis.

Cyanobacteria are only prokaryotes which are synthetic and they are capable of producing oxygen.

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What is scatter radiation
Arturiano [62]

Scatter Radiation is a type of secondary radiation that occurs when the useful beam intercepts any object, causing some x-rays to be scattered. During an x-ray or fluoroscopic exam the patient is the most significant source of scatter radiation.Scatter radiation occurs as a result of the targeted beam striking objects, such as the patient's body, and reflecting a more harmful secondary radiation in all directions. One method of reducing the medical staff's exposure to this harmful scatter radiation is the implementation Infab's new Scatter Armor Shields.

I hope this helped :)

8 0
3 years ago
Cite a task that the chimpanzee's hand would enable it to do that the hand of the squirrel cannot
just olya [345]
Well the chimpanzees can grab things like food and can easily manage themselves with their hands they also have thumbs 
5 0
4 years ago
Plase can you guy help
jeka94

Answer:

1. observation

2. Analysis

3. conclusion

4. hypothesis

hope i helped

5 0
4 years ago
Consider a scenario where a person eats a cupcake composed of glucose molecules. The person has digested the cupcake, and the gl
kupik [55]

Answer: a.b.c-true.

              d-false.

a. Some of the energy stored in glucose will eventually be transformed into heat.

This is through  the process of Glycolysis (and Krebs's cycle )where the Carbon atoms in the glucose(substrate level phosphorylation) undergo metabolism with the liberation of ATPs as  heat during  metabolisms. The glucose serves as the substrate for the generation of heat.However,largest amount of ATP's  is expended as heat during oxidative phosphorylation,due to the glucose used as substrate in preceding stages of glycolysis and Kreb Cycle.

b. Carbon atoms from glucose could be exhaled by the person as carbon dioxide.

Yes, this is through glycoylsis and kreb's Cycle where  CO2 is given off as during metabolisms as one compound change from one form to another.E.g from Citric acid(6C) to Succinate(5C),some Carbon atoms are lost as C02. Like during glycolysis.

C. Carbon atoms from glucose could later be found in a plant cell.Yes this is because  the CO2 expired  by human could be trapped by green plants and react with water in the presence of sunlight trapped by chlorophyll to form carbohydrate in plants.This is photosynthesis.

Explanation:

Carbon can't not be converted to oxygen,big FALSE.

7 0
3 years ago
Which hormone(s) is/are required for facultative water reabsorption in the collecting ducts?
Marta_Voda [28]

ADH hormones are required for facultative water reabsorption in the collecting ducts.

<h3>What about facultative water reabsorption?</h3>
  • The antidiuretic hormone is the hormone in charge of facultative water reabsorption (ADH).
  • By enhancing the water permeability of key cells in the collecting duct and the last segment of the distal convoluted tubule, facultative water reabsorption is achieved.
  • The proximal convoluted tubule is the initial area of the nephron that is in charge of reabsorbing water.
  • The proximal tubule receives filtered fluid from Bowman's capsule.
  • Antidiuretic hormone increases the reabsorption of water into the circulation by binding to receptors on cells in the kidney's collecting ducts.
  • The collecting ducts are essentially impermeable to water in the absence of antidiuretic hormone, and water escapes as urine.
  • In facultative reabsorption, water is reabsorbed through osmosis because the impact of ADH makes the collecting ducts more permeable to water.

Learn more about hormone here:

brainly.com/question/4678959

#SPJ1

8 0
2 years ago
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