LS1-2
What is the basic unit of life in all living things?
Cell
Which organelle is responsible for producing energy in the cell?
Mitochondria
Which of the following best describes homeostasis?
How do the circulatory and respiratory systems work together?
The circulatory system transports oxygen from the lungs to the body.
Which equation best represents cellular respiration?
Options:
6CO2+6H2O→C6H12O6+6O2
C6H12O6+6O2→6CO2+6H2O+energy
C6H12O6+6O2→6CO2+6H2O+energy
6O2+6H2O→C6H12O6+6CO26O2+6H2O→C6H12O6+6CO2
C6H12O6+6CO2→6O2+6H2OC6H12O6+6CO2→6O2+6H2O
C6H12O6+6O2→6CO2+6H2O+energyC6H12O6+6O2→6CO2+6H2O+energy
What is the main function of the respiratory system?
Exchange gases
Which process releases energy by breaking down glucose and oxygen?
Cellular respiration
Which of the following is an example of a negative feedback mechanism?
Sweating to cool down
When a student runs, their breathing and heart rate increase. Which systems are interacting?
Respiratory and circulatory
Design an investigation to show that plants and animals both perform cellular respiration. Which evidence would best support your claim?
Both produce carbon dioxide when given glucose and oxygen.
Which level of organization comes directly after "cell" in multicellular organisms?
Tissue
What is the main waste product of cellular respiration?
Carbon dioxide
Role of feedback mechanisms in homeostasis?
They help maintain stable internal conditions.
Which two organ systems work together to deliver oxygen to cells and remove carbon dioxide?
Respiratory and circulatory
A model shows food molecules and oxygen entering a cell, and carbon dioxide, water, and energy leaving. What process is being illustrated?
Cellular respiration
Which organ system is responsible for transporting nutrients and oxygen throughout the body?
Circulatory system
What is required for cellular respiration to occur?
Oxygen
Why does sweating help maintain homeostasis?
It cools the body when it gets too hot.
Model the relationship between a cell, a tissue, and an organ.
Cells make up tissues, and tissues make up organs.
How can a student best test how temperature affects the rate of cellular respiration in yeast?
Measure the amount of carbon dioxide produced at different temperatures.
Order of organization from smallest to largest: Cell, tissue, organ, organ system, organism; Organism, organ system, organ, tissue, cell; Tissue, cell, organ, organ system, organism; Organ, tissue, cell, organ system, organism
Cell, tissue, organ, organ system, organism
What is a product of cellular respiration?
Carbon dioxide
Which organelle helps maintain homeostasis by controlling what enters and leaves the cell?
Cell membrane
Illustrate the hierarchical organization of interacting systems in a model of the human body.
Show cells forming tissues, tissues forming organs, and organs forming organ systems.
Which feedback mechanism is responsible for blood sugar returning to normal after eating a sugary snack?
Negative feedback