Homeostasis
What is the body's normal temperature approximately?
37.1
What is the basic unit of life
Cell
What organelle is known as the powerhouse of the cell? →
Mitchondria
What type of macromolecule are enzymes?
Proteins
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Venus
Is sweating an example of positive or negative feedback? →
Negative Feedback
What do organisms need to obtain from food to power cellular activities?
Energy
What organelle is responsible for making proteins?
Ribosomes
What part of an enzyme binds to the substrate?
Active Site
What day of the week will we return from Fall Break?
Tuesday
What is the main goal of homeostasis in a living organism?
To maintain a stable internal environment so that cells and body systems can function properly.
What molecule contains hereditary information?
DNA
What organelle controls what enters and leaves the cell?
Cell Membrane
What happens to a protein when it loses its normal shape?
It can become denatured and lose its function
What zodiac sign is today?
Libra
When a person becomes cold, their muscles may rapidly contract, causing them to shiver. How does shivering help maintain homeostasis?
Shivering produces heat through muscle activity, helping raise body temperature back toward its normal range.
Why are cells considered the basic unit of life?
All living things are made of one or more cells, and cells carry out the basic functions necessary for life.
What is the main function of the cell membrane?
It controls what substances enter and leave the cell.
What is the relationship between amino acids and proteins?
Amino acids are the building blocks that join together to form proteins.
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During a hot day, the body begins sweating. As the sweat evaporates, the body temperature decreases. Explain why this is an example of negative feedback.
The increase in body temperature causes sweating, and sweating lowers the temperature. The response reverses the original change, bringing the body temperature back toward its normal range.
An organism responds to light by moving toward it. Which characteristic of life does this demonstrate? Explain.
Response to stimuli. The organism detects a change in its environment and responds to it.
A cell needs a large amount of energy to perform its functions. Which organelle would you expect the cell to have many of, and why?
Mitochondria, because they produce ATP, which provides usable energy for cellular activities.
Why can two proteins made from different amino acid sequences have different functions?
Different amino acid sequences can cause proteins to fold into different shapes. Different shapes allow proteins to perform different functions.
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