8.1 - Transporting Substances

Question 1

Why is it necessary to transport substances into and out of organisms?

Answer 1

It is vital for life to transport essential substances into organisms and to remove waste products to prevent accumulation.

Question 2

What do plants need to take in during photosynthesis?

Answer 2

Plants need to take in carbon dioxide and dissolved nutrient and mineral molecules, as well as water from the soil and air.

Question 3

What waste product do plants excrete during photosynthesis?

Answer 3

Plants excrete oxygen as a waste product of photosynthesis.

Question 4

What advanced system do animals have to remove waste?

Answer 4

Animals have advanced systems such as the kidney to efficiently remove waste.

Question 5

What does the kidney remove from the body?

Answer 5

The kidney removes waste such as urea and excess ions.

Question 6

What happens if excess urea is not removed from the body?

Answer 6

If excess urea is not removed, it builds up in the body and becomes toxic.

Question 7

What can happen if excess carbon dioxide builds up in the blood?

Answer 7

Excess carbon dioxide can dissolve in the blood, causing it to become acidic, leading to a condition called acidosis.