PSSA Life Science Flashcards
6 cards from real PSSA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 PSSA Life Science flashcards as text
What is the basic unit of all living things?
Answer: Cell
The cell is the basic structural and functional unit of all living organisms.
Which organelle is known as the 'powerhouse of the cell'?
Answer: Mitochondria
The mitochondria produce ATP through cellular respiration, providing energy for the cell's activities.
What is the process by which cells divide to produce two identical daughter cells?
Answer: Mitosis
Mitosis is cell division that produces two genetically identical daughter cells, used for growth and repair.
Which of the following is an example of a producer in an ecosystem?
Answer: Oak tree
An oak tree is a producer because it makes its own food through photosynthesis.
What does DNA stand for?
Answer: Deoxyribonucleic acid
DNA stands for deoxyribonucleic acid, the molecule that carries genetic information in living organisms.
Which type of organism breaks down dead organic matter and recycles nutrients?
Answer: Decomposers
Decomposers such as bacteria and fungi break down dead organic matter and return nutrients to the ecosystem.