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Shamim

This studystack covers week one to six

QuestionAnswer
What is the definition of homeostasis? The body's ability to maintain a stable internal environment despite external changes.
What type of feedback loop amplifies a change and moves the system away from its starting point? (e.g., blood clotting, childbirth) Positive feedback loop.
What are the four major classes of organic biomolecules? Carbohydrates, Lipids, Proteins, Nucleic Acids.
What is the primary function of the mitochondria within a cell? To produce ATP (adenosine triphosphate) through cellular respiration.
During which phase of the cell cycle does DNA replication occur? The S (Synthesis) phase of Interphase.
What are the four primary types of tissues in the human body? Epithelial, Connective, Muscle, Nervous.
What protein, found in the epidermis, waterproofs the skin and makes it tough? Keratin.
What are the mature, living bone cells called that are trapped within the matrix? Osteocytes.
What type of joint is characterized by being immovable, such as the sutures of the skull? Synarthrosis (or Fibrous joint).
What is the name of the theory that describes how a muscle fiber contracts? The Sliding Filament Theory.
What is the main structural carbohydrate in plants, and a polysaccharide we consume for fiber? Cellulose.
This process moves substances across a cell membrane against their concentration gradient, requiring ATP. Active Transport.
Which type of epithelial tissue is specialized for absorption and secretion, and is found in organs like the intestines? Simple Columnar Epithelium.
What is the functional unit of a skeletal muscle fiber called? The Sarcomere.
What neurotransmitter is released at the neuromuscular junction to trigger muscle contraction? Acetylcholine (ACh).
Created by: user-1993316
 

 



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