WorksheetsScience 9 Quiz Bee
Total questions: 15
Worksheet time: 8mins
Which organ is the main site of gas exchange in the human body?
Trachea
Heart
Lungs
Diaphragm
Which process in plants uses carbon dioxide and sunlight to produce glucose?
Respiration
Photosynthesis
Fermentation
Transpiration
What type of chemical bond involves the transfer of electrons?
Covalent bond
Ionic bond
Metallic bond
Hydrogen bond
Which organic compound is the main source of energy for the body?
Proteins
Carbohydrates
Lipids
Nucleic acids
Which of the following is a compound?
O₂
CO₂
Fe
Na
Which chamber of the heart pumps oxygenated blood to the body?
Right atrium
Right ventricle
Left atrium
Left ventricle
In Mendelian genetics, the physical appearance of an organism is called:
Genotype
Phenotype
Allele
Trait
What type of bond is formed when two atoms share electrons?
Ionic bond
Covalent bond
Metallic bond
Van der Waals bond
Which of the following is an example of a hydrocarbon?
CH₄
H₂O
CO₂
NaCl
What is the molar mass of H₂O?
10 g/mol
16 g/mol
18 g/mol
20 g/mol
Which blood vessels are responsible for the exchange of oxygen, carbon dioxide, and nutrients with tissues?
Arteries
Veins
Capillaries
Venules
A red flower (RR) crossed with a white flower (WW) produces pink offspring (RW). This is an example of:
Codominance
Incomplete dominance
Complete dominance
Independent assortment
What is the percentage composition of carbon in CO₂? (C = 12, O = 16)
12%
27.3%
33.3%
50%
Which class of organic compounds includes enzymes and hormones made up of amino acids?
Carbohydrates
Proteins
Lipids
Nucleic acids
A 5.0 g sample of NaCl contains how many moles? (Na = 23, Cl = 35.5; M = 58.5 g/mol)
0.085 mol
0.50 mol
1.0 mol
1.17 mol
