Biofuels are fuels that are made from all of the following EXCEPT _________.A.
petroleum
B.
sugar
C.
soybean
D.
palm oil

Answers

Answer 1
Answer: The correct answer is A. Petroleum is not a raw material for the production of biofuels. From the name itself, biofuels are obtained from biomass. Biomass are organic materials for example are the choices given in B, C and D.
Answer 2
Answer:

Answer: The answer is A

Hope this is helpful

Explanation:

I just know :) thank you very much


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Which specialized carbohydrate is used for structure in shrimp?

Answers

Answer: Chitin

Explanation:

Carbohydrates can be defined as the class of bio molecules which includes sugar, cellulose, chitin and many forms.

Chitin is the major constituent of the exoskeleton. It is made of polysaccharide. It is a type of exoskeleton which is is found in arthopods which provides support to the shrimp.

This polysaccharide is chitin.

The specialized carbohydrate used for structure in shrimp is chitin. Chitin is a long-chain polymer of N-acetylglucosamine, which is a derivative of glucose.

How do we explain?

Chitin provides strength and flexibility to the exoskeleton, allowing the shrimp to move and grow while still being protected and is also found in the exoskeletons of other arthropods, such as crabs and lobsters. It is also found in the cell walls of some fungi and algae.

Chitin is a very strong material. It is even stronger than steel, pound for pound. However, it is also very lightweight. This makes it an ideal material for the exoskeletons of shrimp and other arthropods.

The exoskeleton of a shrimp is made up of several layers of chitin. The outermost layer is the hardest layer. It is called the epicuticle. The epicuticle is made up of a waxy substance that helps to protect the shrimp from water loss and from predators.

Learn  more about  Chitin at:

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A crop grown to sell on the world market

Answers

A crop grown to sell on the world market is called a cash crop.

A six-carbon sugar is an example of a ______ that can join with other molecules to form a _____ such as starch or cellulose

Answers

A six-carbon sugar is an example of a monomer that can join with other molecules to form a polymer such as starch of cellulose. 

The right answer for the first gap is monomer.

The right answer for the second gap is polymer.

The polymer is a large molecule consisting of basic units called monomers (or monomer units) connected by covalent bonds.

A monomer is a compound of simple molecules that can react with other monomers to give a polymer.

What is combustion and how does it affect the carbon cycle

Answers

Combustion is the burning of fossil fuels such as coal, natural gas, oil, etc. It affects the carbon cycle because it adds much more carbon to the air. That then causes phenomenon's like global warming. Therefore, it is bad for our environment and ozone layer.

What would happen to the food that someone ate if they didnt have the digestive enzymes they needed

Answers

Answer:

The digestive system is my favorite system! Without it you would not survive. Our digestive system is how we break down food into nutrients that feed our cells and give us energy to move, talk, grow, think, reproduce, and all the other crazy things that humans do.

Although each of the parts of the digestive system has specific and important functions, shockingly, you can survive without some of the parts. For example, morbidly obese individuals can have their stomach entirely removed in a procedure called a gastric bypass. In this surgery, the small intestine is linked directly to the esophagus thus “bypassing” the stomach. You can also live without your appendix. In fact, it sometimes negatively impacts health as it can become infected (have you ever known someone who had their appendix burst?). The appendix was thought to be a “vestigial organ” meaning that at one point in evolutionary history, we humans had a need for it, but now we don’t; however, there is recent evidence that the appendix is an important hotbed for beneficial bacteria that help us digest food.

Explanation:

I hope this helps! Brainliest is always appreciated!

Answer:

They wouldn't be able to digest the food. It wouldn't break down like it's supposed to with the digestive enzymes.

How much sperm does it take to make a baby?

Answers

it just takes one sperm cell to go into the female egg to then produce a baby
Actually, only one sperm gets fertilised and develops into a baby. But a lot more sperms are required to carry out reproduction. This is because it is not sure if one sperm definitely gets fertilised. Some weaker sperms perish. The strongest sperm among the numerous sperms get fertilised while the others perish.