Flashcards on Introduction to Biological Systems
Introduction to Biological Systems: An Essential Student Guide
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Human Biology
46 cards
Card 1
Question: What is an enzyme, and what is its role in chemical reactions?
Answer: An enzyme is a biological catalyst that speeds up chemical reactions without being consumed.
Card 2
Question: How does an enzyme act on its substrate?
Answer: The enzyme binds to the substrate and converts it into products.
Card 3
Question: What effect does temperature have on enzymes?
Answer: Each enzyme has an optimal temperature; excessive heat denatures them, causing them to lose function.
Card 4
Question: How does pH influence enzyme activity?
Answer: Each enzyme functions best at a specific pH; extreme pH levels reduce their activity or denature them.
Card 5
Question: What happens when substrate concentration increases?
Answer: The reaction rate increases up to a point where the enzyme becomes saturated and can no longer increase further.
Card 6
Question: What is enzyme denaturation?
Answer: A change in an enzyme's shape, caused by high temperatures or extreme pH, which prevents it from functioning.
Card 7
Question: What are the main functions of the nervous system?
Answer: It detects stimuli, processes information, and coordinates responses.
Card 8
Question: What is the function of dendrites in a neuron?
Answer: To receive information from other cells.
Card 9
Question: What does the soma, or cell body, of a neuron do?
Answer: It processes the received information.
Card 10
Question: What is the function of the axon?
Answer: To conduct nerve impulses from the cell body to other cells.