Practice LAT questions with answers and explanations.
Choose an option to check your answer.
Hammurabi was a king of Babylon.
His law code is one of the best-known ancient legal collections.
Choose an option to check your answer.
Plants use carbon dioxide and water to make glucose during photosynthesis.
Oxygen is released as a by-product.
Choose an option to check your answer.
Machu Picchu was built by the Inca civilization.
It is located high in the Andes of Peru.
Choose an option to check your answer.
Chlorophyll absorbs light energy for photosynthesis.
It gives most plant leaves their green color.
Choose an option to check your answer.
The cell is the smallest structural and functional unit of living organisms.
All living things are made of one or more cells.
Choose an option to check your answer.
Mitochondria produce much of the cell's usable energy as ATP.
They are therefore called the powerhouse of the cell.
Choose an option to check your answer.
The heart pumps blood through the circulatory system.
Its contractions deliver oxygen and nutrients to tissues.
Choose an option to check your answer.
Roots anchor the plant and absorb water and minerals.
Root hairs increase the absorbing surface.
Choose an option to check your answer.
The skin is the body's largest organ by surface area and mass.
It protects internal tissues and helps regulate temperature.
Choose an option to check your answer.
Transpiration is the loss of water vapor through plant surfaces.
Most of it occurs through leaf stomata.
Choose an option to check your answer.
The femur is the thigh bone.
It is the longest and one of the strongest bones in the body.
Choose an option to check your answer.
Nitrogen makes up about 78% of Earth's atmosphere.
Oxygen is the second-most abundant gas.
