Science Entrance Exam Sample

Which of the following structures is found in plant cells but not in animal cells?

• Ribosomes

• Mitochondria

• Lysosomes

• Chloroplasts

What is the primary function of the chloroplast in plant cells?

• The primary function of the chloroplast is to conduct photosynthesis.

• To provide structural support to the cell.

• To facilitate cellular respiration.

• To store water and nutrients.

Which process is responsible for the exchange of oxygen and carbon dioxide in the lungs?

• Oxygen absorption

• Carbon dioxide production

• Gas exchange (respiration)

• Blood circulation

Which of the following is a characteristic of all living organisms?

• Ability to grow and develop

• Ability to breathe underwater

• Ability to photosynthesize

• Ability to fly

In genetics, what does the term 'heterozygous' mean?

• An organism with no alleles for a specific gene.

• An organism with three different alleles for a specific gene.

• An organism with two identical alleles for a specific gene.

• An organism with two different alleles for a specific gene.

What is the basic unit of life?

• Organism

• Tissue

• Atom

• Cell

Which organelle is known as the powerhouse of the cell?

• Ribosome

• Nucleus

• Mitochondria

• Chloroplast

What is the pH level of pure water?

• 5

• 7

• 6

• 8

What type of bond involves the sharing of electron pairs between atoms?

• Ionic bond

• Metallic bond

• Hydrogen bond

• Covalent bond

What is the primary source of energy for the Earth?

• The Moon

• Geothermal energy

• Nuclear fusion

• The Sun