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Sheri Thomas

Human Physiology week 1-6

QuestionAnswer
What is the smallest living unit in the human body? The cell.
Which organelle is known as the “powerhouse of the cell”? The mitochondrion, because it produces ATP.
Cytoplasm Gel-like fluid inside the cell that holds organelles and allows chemical reactions to occur.
What is the function of ribosomes? They synthesize proteins from amino acids.
Endoplasmic reticulum (ER) Network of membranes that synthesizes proteins (rough ER) and lipids (smooth ER).
The _____ contains the cell’s genetic material in the form of DNA. nucleus
What is the difference between passive and active transport? Passive transport requires no energy; active transport requires ATP to move substances against the gradient.
Selective permeability Property of the plasma membrane that allows some substances to cross more easily than others.
What is facilitated diffusion? Movement of molecules across a membrane using a carrier or channel protein.
What happens to a red blood cell in a hypotonic solution? It swells and may burst because water enters the cell.
Homeostatic control center The brain structure or organ that processes information and determines the response to restore balance.
Give an example of positive feedback in the human body. Childbirth contractions triggered by oxytocin release.
Which body system coordinates rapid responses to stimuli? The nervous system.
Neuron A specialized cell that transmits electrical impulses in the nervous system.
What are the three types of muscle tissue? Skeletal, cardiac, and smooth muscle.
What is the primary function of skeletal muscle? Voluntary movement and maintenance of posture.
Tendon Connective tissue that attaches muscle to bone.
Created by: silly_family
 

 



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