The type of cell division that creates genetic variation through crossing over is: MCQ with Answer and Explanation

Explanation:
Insulin lowers blood glucose by promoting cellular uptake and glycogen synthesis, opposing glucagon which raises glucose. Cortisol and epinephrine are counter-regulatory hormones that increase blood glucose.

Explanation:
Apoptosis is a genetically controlled, energy-dependent process of programmed cell death that removes unwanted, damaged, or infected cells without causing inflammation. It is vital for development (e.g., separation of digits in fingers) and tissue homeostasis. Necrosis is traumatic cell death causing inflammation. Autolysis is self-digestion after death, phagocytosis is engulfment.

Explanation:
Cones are photoreceptor cells in the retina responsible for photopic (daylight) vision and color perception. There are three types of cones sensitive to blue, green, and red wavelengths. Rods are responsible for scotopic (dim light) vision and do not detect color. The cornea and lens focus light onto the retina.