Diagnostic Quiz in Science 10

What is the name of the tiny air sacs where oxygen is exchanged for carbon dioxide in the lungs?

• Bronchi

• Alveoli

• Trachea

• Larynx

What is the function of red blood cells in the circulatory system?

• Carrying oxygen to body cells

• Fighting off infections

• Producing insulin

• Breaking down nutrients

What is the function of red blood cells in the circulatory system?

• Carrying oxygen to body cells

• Fighting off infections

• Producing insulin

• Breaking down nutrients

In codominance, when two different alleles are present, what is the outcome in terms of phenotype?

• One allele is expressed, while the other remains hidden.

• One allele is completely suppressed by the other.

• A new allele is formed by combining the two original alleles.

• Both alleles are expressed fully and separately.

Which of the following could lead to the extinction of a species?

• Successful adaptation to changing conditions

• Rapid increase in genetic diversity

• Loss of suitable habitat

• Presence of abundant food sources

Which process is responsible for breaking down glucose molecules to produce energy in the form of ATP?

• Photosynthesis

• Cellular respiration

• Osmosis

• Fermentation

What is the significance of the electron cloud in the Quantum Mechanical Model?

• It represents the exact path an electron follows around the nucleus.

• It shows the fixed positions of electrons within the atom.

• It depicts the attractive forces between protons and neutrons.

• It visualizes the probability of finding an electron in a certain region around the nucleus.

Ionic bonds form between atoms when they

• Transfer electrons

• Share electrons

• Have significantly different atomic masses

• Have a complete outer electron shell

Which of the following properties is typically associated with covalent compounds?

• Low melting and boiling points

• High melting and boiling points

• High electrical conductivity

• Brittle and easily shattered structure

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

• CO₂

• NaCl

• H₂O

• H₂