Multiple choice questions about biology, physics and chemistry.

here are the answers to your questions:

73) B) Transport water
The xylem is a plant tissue responsible for transporting water and dissolved minerals from the roots up to the rest of the plant.

74) D) Newton
Isaac Newton is famously credited with formulating the law of universal gravitation.

75) A) Chemical reaction
A chemical reaction is a process that involves the rearrangement of the atomic structure of substances, often by combining atoms to form new molecules.

76) C) Semicircular canals
The semicircular canals, located in the inner ear, are fluid-filled structures that detect head movements and help maintain balance.

77) B) Blue whale
The blue whale is the largest mammal, and indeed the largest animal, on Earth.

78) A) Chemical
Food stores energy in the chemical bonds of its molecules, which is released during digestion and metabolism.

79) A) Mitosis
Mitosis is a fundamental process of cell division where a single cell divides into two identical daughter cells, primarily for growth and repair.

80) D) Lungs
The lungs are the primary organs of the respiratory system, responsible for the exchange of oxygen and carbon dioxide between the blood and the air.

81) A) Ecology
Ecology is the scientific study of the relationships between living organisms and their interactions with their natural environment.

82) C) Ionic
Ionic bonds are formed when one or more electrons are completely transferred from one atom to another, resulting in the formation of oppositely charged ions that attract each other.

83) B) Reproduction
Reproduction is the biological process by which new individual organisms, or offspring, are produced from their parents.