What is the maximum number of electrons carbon’s outer shell can hold?

Question

six

eight***

two

four

What is the definition of a hydrocarbon?

electrons shared between two different atoms

large molecules that are produced by living things

a large chain of carbons and hydrogens bonded together***

a single line bonding carbon and hydrogen

Which compound is a carbohydrate?

amino acid

protein

starch***

nucleotide

Which compound contains nitrogen?

water

starch

amino acid***

glucose

Which equation best represents conservation of matter?

3H2O + 3CO2 → C6H12O6 + 6O2

6H2O + 10CO2 → C6H12O6 + 4O2

6H2O + 6CO2 → C6H12O6 + 6O2***

6H2O + 6CO2 → C3H6O3 + 3O2

A large portion of cellular respiration happens in the mitochondria. For this reason, the mitochondria are known colloquially as the “powerhouses of the cell.” Which body organ could best be compared to the mitochondria?

the stomach because it breaks down nutrients and creates energy for the body***

the lungs because they add oxygen to the body

the heart because it pumps nutrients around the body

the brain because it controls the body

Why does a diet high in sugar lead to weight gain?

Sugar is a lipid, which is stored as fat in the body.

Sugary food causes blood sugar levels to spike, telling the body to retain weight.

Fat is a carbohydrate, which leads to weight gain.

Sugar and fat are made of the same elements, so sugar can be converted to fat.***

What makes amino acids unique from one another?

the long strands of glucose molecules

the carboxyl group

the R group***

the amino group

What are reactants in a chemical reaction?

substances that are formed by reactions

outputs

substances that speed up reactions

inputs***

Reliability refers to

professionalism.

expertise.

consistency.***

relevancy.

During a chemical reaction, the quantity of products

increases.***

decreases.

stays the same.

fluctuates.

Answer 1

All correct, 100% :)

Answer 2

I can confirm all of these are correct!!! Thank you sooooooooooooo much!

Answer 3

Everything was right for me except the last one "During a chemical reaction, the quantity of products" stays the same and doesn't increase.

Answer 4

Answer:

endothermic reaction

Explanation:

This is because it absorb heat from the surrounding which is required to break the bond hold it together hence as it absorb heat from the surrounding the temp of surrounding decrease.
(reword it)

Answer 5

The phrase "you are what you eat" is factually correct because when the body breaks down the food matter being consumed, the elements and molecules that form will be used by the body. These will be used to create new biomolecules that will be used for growth and repair. Without a healthy diet the body wont have these, effecting ur over all heath.

Answer 6

Your friend asks for your help checking their essay about sugar production and use in plants. They have found an online encyclopedia stating that plants produce glucose via photosynthesis. Glucose is linked together to form the carbohydrate starch. They are confused, though, because a university website states that glucose is linked together to form cellulose, the main part of plant cell walls.

In 3–5 sentences, describe how you can help your friend check their information and how both statements can be true.

Starch is made up of long chains of glucose. While cell walls are made from cellulose created from photosynthesis. Cellulose is made up of glucose and cell walls are the most abundant carbohydrate.
(re-phrase pls) :)

Answer 7

thanks!