Quiz about Biological Molecules_1

Question 1

What are the basic building blocks of living things?

Accepted Answer

<p> a) Cells</p>

Answer

b) Chemicals

Answer

c) Proteins

Answer

d) Elements

Question 2

Which of the following elements is a primary component of organic molecules in living organisms?

Accepted Answer

Carbon

Answer

Nitrogen

Answer

Oxygen

Answer

Hydrogen

Question 3

What is the most abundant element in the human body by mass?

Accepted Answer

oxygen

Answer

nitrogen

Answer

carbon

Answer

hydrogen

Question 4

Which class of biomolecules serves as the main structural components in living organisms?

Accepted Answer

proteins

Answer

nucleic acids

Answer

lipids

Answer

carbohydrates

Question 5

Which chemical is the universal energy currency in cells and plays a crucial role in energy transfer?

Accepted Answer

ATP

Answer

NADH

Answer

GTP

Answer

ADP

Question 6

What is the term for the process by which green plants and some other organisms convert light energy into chemical energy in the form of glucose?

Accepted Answer

photosynthesis

Answer

fermentation

Answer

transpiration

Answer

respiration

Question 7

Which of the following is not an organic macromolecule?

Accepted Answer

Lipids

Accepted Answer

<p>Water</p>

Answer

Nucleic acids

Answer

Carbohydrates

Answer

Proteins

Question 8

What is the chemical formula for water?

Accepted Answer

H2O

Answer

H2O2

Answer

CO2

Answer

NaCl

Question 9

Which class of biomolecules includes enzymes, antibodies, and hemoglobin?

Accepted Answer

proteins

Answer

nucleic acids

Answer

lipids

Answer

carbohydrates

Question 10

What is the chemical name for the sugar found in DNA?

Accepted Answer

deoxyribose

Answer

sucrose

Answer

fructose

Answer

glucose

Question 11

Why are biomolecules referred to as "organic"?

Accepted Answer

They contain carbon atoms.

Answer

They are found in nature.

Answer

They are made up of living organisms.

Answer

They are used in organic chemistry reactions.

Question 12

Which element is the primary reason biomolecules are classified as organic compounds?

Accepted Answer

carbon atoms

Answer

hydrogen atoms

Answer

oxygen atoms

Answer

nitrogen atoms

Question 13

What is the chemical symbol for carbon?

Accepted Answer

C

Answer

Ca

Answer

Co

Answer

Cr

Question 14

Which class of biomolecules is primarily composed of carbon, hydrogen, and oxygen in a 1:2:1 ratio?

Accepted Answer

carbohydrates

Answer

proteins

Answer

lipids

Answer

nucleic acids

Question 15

Which of the following is not a common organic biomolecule?

Accepted Answer

water

Answer

proteins

Answer

lipids

Answer

carbohydrates

Question 16

What is the main function of lipids in living organisms?

Accepted Answer

The main function of lipids in living organisms is to serve as a source of energy, insulation, and protection for organs.

Answer

The main function of lipids in living organisms is to aid in muscle contraction.

Answer

The main function of lipids in living organisms is to regulate body temperature.

Answer

The main function of lipids in living organisms is to provide structural support for cells.

Question 17

Which organic biomolecule is the genetic material of cells and carries the instructions for building and maintaining an organism?

Accepted Answer

DNA

Answer

RNA

Answer

Protein

Answer

Carbohydrate

Question 18

The process of photosynthesis involves the conversion of carbon dioxide and water into which organic molecule?

Accepted Answer

glucose

Answer

oxygen

Answer

nitrogen

Answer

carbon monoxide

Question 19

Which of the following is a monosaccharide, a simple sugar that is a basic unit of carbohydrates?

Accepted Answer

Glucose

Answer

Starch

Answer

Sucrose

Answer

Fructose

Question 20

What is the primary role of proteins in living organisms?

Accepted Answer

Building blocks of cells and tissues

Accepted Answer

Structural support

Answer

Energy storage in cells

Answer

Regulation of gene expression

Answer

Transport of oxygen in the blood

Question 21

What is the key characteristic that distingu organic compounds from inorganic compounds in science?

Accepted Answer

c) Presence of carbon-carbon bonds

Answer

a) Presence of hydrogen

Answer

b) Presence of oxygen

Answer

d) Presence of nitrogen

Question 22

Which of the following compounds is considered an organic compound due to its carbon-carbon bonds?

a) Sodium chloride (table salt)

b) Methane (CH4)

c) Sodium hydroxide (NaOH)

d) Calcium carbonate (CaCO3)

Accepted Answer

b) Methane (CH4)

Answer

d) Calcium carbonate (CaCO3)

Answer

c) Sodium hydroxide (NaOH)

Answer

a) Sodium chloride (table salt)

Question 23

Which of the following compounds is an example of an inorganic compound?

Accepted Answer

ethanol (C2H5OH)

Accepted Answer

glucose (C6H12O6)

Accepted Answer

Carbon tetrachloride (CCl4)

Answer

water (H2O)

Answer

sodium chloride (NaCl)

Question 24

Organic chemistry primarily focuses on the study of:

Accepted Answer

carbon compounds

Answer

hydrogen compounds

Answer

nitrogen compounds

Answer

oxygen compounds

Question 25

Which class of compounds includes minerals, metals, and salts and is considered inorganic?

Accepted Answer

b) Ionic compounds

Answer

a) Hydrocarbons

Answer

c) Aromatic compounds

Answer

d) Alcohols

Question 26

What are the two primary categories of chemicals that make up living organisms?

Accepted Answer

a) Elements and mixtures

Answer

b) Compounds and mixtures

Answer

c) Elements and compounds

Answer

d) Organic and inorganic substances

Question 27

Which technique is used to determine the elemental composition of living tissues?

Accepted Answer

elemental analysis

Answer

spectroscopy

Answer

chromatography

Answer

mass spectrometry

Question 28

What is the purpose of elemental analysis in the study of living organisms?

Accepted Answer

To determine the elemental composition of biological samples.

Answer

To study the behavior of living organisms

Answer

To analyze the genetic makeup of living organisms

Answer

To determine the age of living organisms

Question 29

Which of the following is an example of an element commonly found in living organisms?

Accepted Answer

carbon

Answer

oxygen

Answer

helium

Answer

iron

Question 30

Living organisms primarily consist of which type of matter, whether elements or compounds?

Accepted Answer

compounds

Answer

molecules

Answer

elements

Answer

atoms

Question 31

What is the chemical symbol for carbon, a fundamental element in all living organisms?

Accepted Answer

C

Answer

Ca

Answer

Co

Answer

Cu

Question 32

Which type of substances are typically analyzed in elemental analysis to determine the chemical composition of tissues?

Accepted Answer

Biological molecules

Answer

Compounds

Answer

Elements

Answer

Isotopes

Answer

Molecules

Question 33

In the context of living organisms, what is the primary function of elemental analysis?

Accepted Answer

To determine the elemental composition of a substance

Answer

To study the genetic makeup of living organisms

Answer

To analyze the chemical reactions in living organisms

Answer

To measure the physical properties of living organisms

Question 34

Which type of substances are typically analyzed in elemental analysis to determine the chemical composition of tissues?

Accepted Answer

Biological molecules

Answer

Compounds

Answer

Elements

Answer

Isotopes

Answer

Molecules

Question 35

What is the purpose of chemical analysis in the study of organic compounds in living organisms?

Accepted Answer

Chemical analysis is used to identify and quantify organic compounds in living organisms.

Answer

Chemical analysis is used to study the physical properties of organic compounds in living organisms.

Answer

Chemical analysis is used to determine the age of organic compounds in living organisms.

Answer

Chemical analysis is used to create new organic compounds in living organisms.

Question 36

What is the first step in finding the chemical composition of a living tissue, such as a vegetable?

Accepted Answer

d) Grind it in Shrike law

Answer

a) Grind it in citric acid

Answer

b) Grind it in hydrochloric acid

Answer

c) Grind it in sulfuric acid

Question 37

What is the first step in finding the chemical composition of a living tissue, such as a vegetable?

Accepted Answer

d) Grind it in Trichloroacetic acid

Answer

a) Grind it in citric acid

Answer

b) Grind it in hydrochloric acid

Answer

c) Grind it in sulfuric acid

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