2425 T2 F1 Exam Revision

The _______ is an early invention that converted steam into mechanical energy to power machines.

Each DNA molecule consists of two complementary strands twisted into a ______________.

The passing of traits from parents to offspring is known as _______.

The _______ is the control center of a cell that contains DNA.

The purified liquid collected after distillation is known as the _______.

The _______ provides oxygen and nutrients to a developing foetus in the mother's uterus.

DNA and RNA are examples of _______ that carry instructions for building cells and organisms.

The process of removing impurities from a natural water is called water _______.

The stage of life when a person’s body begins to develop sexual characteristics is called _______.

In physics, energy is often _______ during certain processes, meaning it is not created or destroyed.