Question

Please answer all

By definition, an organic molecule always has which element?

		A) Na (sodium)
		B) Cl (chlorine)
		C) F (fluorine)
		D) C (carbon)

2 points   

QUESTION 19

1. Breaking down polymers into individual monomers is the end result of _________.

		A) dehydration synthesis
		B) hydrolysis
		C) ionic bonding
		D) hydrogen bonding

2 points   

QUESTION 20

1. _________ is the sum total of the chemical reactions in an organism.

		A) Metabolism
		B) Catabolism
		C) Anabolism
		D) none of these

2 points   

QUESTION 21

1. R-OH is an example of a(n)___________.

		A) alcohol
		B) aldehyde
		C) ketone
		D) phosphate

2 points   

QUESTION 22

1. Which two Domains of life are comprised of prokaryotes?

		A) Archaea and Bacteria
		B) Bacteria and Eukarya
		C) Archaea and Eukarya
		D) none of these

2 points   

QUESTION 23

1. Endospores _________.

		A) allow bacteria to enter a dormant state that can withstand desiccation
		B) can germinate into the vegetative state when on conditions are favorable again
		C) are in a dormant state where no metabolism occurs
		D) all of these

2 points   

QUESTION 24

1. Which subatomic particle has a negative charge?

		A) proton
		B) electron
		C) neutron
		D) none of these

Answer 1

Ans- D. C (carbon)

An organic molecule always contain carbon molecule hence is also known as organic chemistry. Organic molecule is made up of carbon in ring or long chain forms.

19 Ans - B) Hydrolysis

The process involves breaking of polymers into monomers is known as Hydrolysis. Hydrolysis result in lysis or addition of water molecule. Polymers are made up of monomers.

20 Ans- A) Metabolism

The sum of overall chemical reactions occur in an organism is called metabolism. Metabolism contain two type of chemical reactions like anabolic and catabolic reaction occur in an organism.

21. Ans. A) alcohol

Alcohol is attach with carboxyle group. Alcohol contain carboxyle group is bonds with carbon atom that is R- OH is functional group of alcohol.

Example - Methanol.

22. Ans. A) Archaea and Bacteria

Prokaryotes are divided into two classes or domains that is Archaea and Bacteria. Prokaryotes are divided into two domain because they show some different characters.

23. D) all of these

Endospores allows bacteria to enter in dormant phase. They can survive in the absence of nutrients also resistant to desiccation. They also occur in doramant stage under infavourable conditions such as stress.

24 Ans B) electron

Electron is type of subatomic particle which has negative charge. Atom consist three types of particle that is proton, neutron and electron. Proton are positive charge and electron are negative charge. Neutron with no electric charge.

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