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Iris Padilla

Week 7 Stack 1

QuestionAnswer
What is homeostasis? The body’s ability to maintain a stable internal environment despite external changes.
Why is homeostasis important? Without it, cells can’t function properly, leading to sickness or death.
Which body systems help maintain homeostasis? The nervous and endocrine systems mainly control balance through communication and hormones.
What happens when homeostasis fails? The body may develop diseases or organ dysfunction because internal balance is lost.
What are biomolecules? Large molecules made by living organisms that are essential for life.
What are the four main biomolecule types? Carbohydrates, lipids, proteins, and nucleic acids.
What is the main function of carbohydrates? They provide quick energy for cells.
Why are proteins important? They build and repair tissues and control chemical reactions as enzymes.
What is the basic unit of life? The cell.
What does the cell membrane do? It controls what enters and exits the cell, helping maintain balance.
What is mitosis? The process where a cell divides into two identical cells for growth and repair.
Why is cell reproduction important? It allows organisms to grow, heal, and pass on genetic information.
What is a tissue? A group of similar cells working together for a specific function.
What are the four main tissue types? Epithelial, connective, muscle, and nervous tissue.
What is the role of epithelial tissue? It covers body surfaces and forms protective barriers and glands.
What are bones and cartilage made of? Specialized connective tissues that form the skeleton’s framework.
What is the main job of cartilage? To cushion joints and provide flexible support.
What are articulations? Joints—places where two bones meet to allow movement or provide stability.
What happens during muscle contraction? Muscle fibers shorten as actin and myosin filaments slide past each other to create movement.
What are two other functions of muscles besides movement? They maintain posture and help produce body heat.
Created by: user-1988558
 

 



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