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sierrah sanders

human physiology

QuestionAnswer
What is homeostasis? The process by which the body maintains a stable internal environment despite external changes.
Which organ regulates blood glucose levels? The pancreas.
What happens when body temperature rises above normal? Sweat glands activate and blood vessels dilate to release heat.
Which two systems mainly control homeostasis? The nervous system and the endocrine system.
What is negative feedback in homeostasis? A mechanism that reverses a change to keep conditions stable (for example, insulin lowering blood sugar).
What are the four main types of biomolecules? Carbohydrates, lipids, proteins, and nucleic acids.
What is the main function of carbohydrates? To provide energy for the body.
Which biomolecule stores genetic information? Nucleic acids (DNA and RNA).
What are proteins made of? Amino acids.
Which biomolecule forms cell membranes and stores long-term energy? Lipids
What does DNA stand for? Deoxyribonucleic acid.
What shape is the DNA molecule? A double helix.
What are the four nitrogen bases found in DNA? Adenine (A), Thymine (T), Cytosine (C), and Guanine (G).
Which base pairs with Adenine? Thymine
What are the two main layers of the skin? The epidermis (outer layer) and dermis (inner layer).
Created by: sselles80
 

 



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