Podcast
Questions and Answers
What is the main purpose of gas exchange in living organisms?
What is the main purpose of gas exchange in living organisms?
- To provide oxygen for cellular respiration and remove carbon dioxide (correct)
- To release energy for cellular processes
- To regulate the temperature of the organism
- To maintain a balance of gases in the environment
Which type of organisms typically have a high surface-area to volume ratio for gas exchange through the cell membrane?
Which type of organisms typically have a high surface-area to volume ratio for gas exchange through the cell membrane?
- Plants with spongy mesophylls
- Small unicellular organisms (correct)
- Large multicellular organisms
- Marine invertebrates with gills
In most larger organisms, what specialized structures provide the large area needed for effective gas exchange?
In most larger organisms, what specialized structures provide the large area needed for effective gas exchange?
- Thick fur coat
- Smooth external skin
- Pulmonary alveoli (correct)
- Hard exoskeleton
What is the function of gills in marine animals?
What is the function of gills in marine animals?
Why do small multicellular organisms like flatworms perform sufficient gas exchange across their skin or cuticle?
Why do small multicellular organisms like flatworms perform sufficient gas exchange across their skin or cuticle?
Which type of organism consists of a single cell?
Which type of organism consists of a single cell?
What are the two general categories of organisms mentioned in the text?
What are the two general categories of organisms mentioned in the text?
Which of the following is considered to be the oldest form of life?
Which of the following is considered to be the oldest form of life?
Which type of multicellular organism has reproductive unicells?
Which type of multicellular organism has reproductive unicells?
Which type of organism has cells that depend on each other to survive?
Which type of organism has cells that depend on each other to survive?
