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ruslelena [56]
2 years ago
6

Which of the following is a NOT mechanism by which the biofuels are made? a. by reacting animal fat or vegetable oil with waterb

. by fermenting sugar components of starchy cropsc. by reacting animal fat or vegetable oil with alcohold. by treating animal fat or vegetable oil with hydrogen
Biology
2 answers:
tester [92]2 years ago
5 0

Answer:

A. by reacting animal fat or vegetable oil with water.

D. by treating animal fat or vegetable oil with hydrogen

Explanation:

Water is insoluble in animal fat or vegetable oil so it makes a layer on the surface of oil. When animal fat or vegetable oil react with hydrogen, it produces solid oil called ghee not biofuels. Biofuel is produced when animal fat or vegetable oil react with alcohol.

lana66690 [7]2 years ago
5 0

Answer: Option A and D.

Explanation:

Biofuel is fuel that produced from either plants, algae or animals. There are four main types;

Ethanol that is made from corn.

Biodiesel made from animal fats and vegetable oil.

Green diesel made from algae and plant sources.

Biogas e.g methane made from animal manure and digested organic material.

Ethanol a type of biodiesel is made from fermentation of sugar components in starch crops.

Biodiesel is made from reaction between animals fats or vegetable oil with alcohol.

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Do autotrophs need to perform cellular respiration?
nydimaria [60]
Many autotrophs make food through the process of photosynthesis, in which light energy from the sun is changed to chemical energy that is stored in glucose. All organisms use cellular respiration to break down glucose, release its energy, and make ATP. Autotrophs are also called producers. They produce food not only for themselves but for all other living things as well (which are known as consumers). This is why autotrophs form the basis of food chains.
Yes, autotrophs need to perform cellular respiration.

4 0
1 year ago
Proton pumps are used in various ways by members of every domain of organisms: Bacteria, Archaea, and Eukarya. What does this mo
evablogger [386]

Answer:

The correct answer is A and D

Explanation:

According to Russell's conception that lies in natural proton gradients. He states that Four billion years ago, alkaline fluids bubbled to produce mildly acidic oceans (As CO2 levels were about a thousand times higher, and it reacts with H2O to form carbonic acid, rendering the oceans mildly acidic). Acidity is just a measure of proton concentration,  higher in the oceans than in vent fluids. This difference has given rise to a natural proton gradient across the vent membranes that had the same polarity (outside positive) which is similar to the electrochemical potential as modern cells have. This might be the reason that last universal common ancestors of all the three domains have evolved proton pumps.

6 0
1 year ago
If a molecule of CO2 released into the blood in your left toe is exhaled from your nose, it must pass through all of the followi
stepladder [879]

Answer:

a) the pulmonary vein

Explanation:

  • Veins are the blood vessels that carry blood to the heart.
  • Pulmonary veins are responsible for carrying oxygenated blood from the lungs back to the left atrium of the heart.
  • There are two right pulmonary veins, known as the right superior and right inferior veins.
  • The largest pulmonary veins are the four main pulmonary veins, two from each lung that drain into the left atrium of the heart.
  1. Artery: pulmonary artery
  2. Drains to: left atrium
  3. Drains from: lungs
  4. System: Circulatory system

6 0
2 years ago
The brain signals the body of an animal to move by transmitting electrical impulses through the neurons. An animal is then able
Fed [463]

Answer:

The muscles of the muscular system work with the bones of the skeletal system.

Explanation: The musculoskeletal system is what enables movement.

(I hope this helps, you can also search up the same question maybe someone also answered it.)

:)

8 0
1 year ago
Polycystic ovary syndrome is an endocrine disorder and a common cause of chronic anovulation. In addition to the clinical manife
Scilla [17]

Answer:

1. Insulin resistance and diabetes

2. Metformin

Explanation:

Metformin can be used to treat polycystic ovary syndrome, especially for insulin-resistant women (insulin is a hormone that transports sugar into cells).

People with insulin resistance have high levels of this hormone in their blood and excess circulating insulin can aggravate manifestations of polycystic ovary syndrome, and also increase the risk of diabetes.

The main benefits of metformin in the treatment of polycystic ovaries is the normalization of menstrual irregularity and the restoration of ovulatory cycles.

Since most women with polycystic ovary syndrome are insulin resistant, metformin is a good treatment option in some cases.

However, the treatment of polycystic ovary syndrome should be individualized for each woman, depending on the symptoms presented and the goal to be achieved with the treatment.

8 0
1 year ago
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