Question

Question 18
A freshwater fish is placed in salt water. Which of the following events would most likely occur?

Fish Don't Fit Inside a Crucial Species Classification System

a
water would be pulled out of the fish's cells, causing dehydration
b
swelling of the fish's cells would rapidly occur until they burst
c
no change would occur to the fish and its cells due to rapid adaptation
d
salt would be pulled out of the fish's cells, causing dehydration
Question 19
Cell membranes have specific protein channels for the movement of water, these structures are ___________.



a
hydrophilic heads
b
aquaporins
c
carbohydrate markers
d
peripheral
Question 20
Which of the following is found in viruses and NOT in cells?



a
ribosomes
b
cytosol
c
protein capsid
d
nucleolus

Answer 1

**Question 18**
A freshwater fish is placed in salt water. Which of the following events would most likely occur?
**Answer:**
a) water would be pulled out of the fish's cells, causing dehydration
**Explanation:** Freshwater fish are adapted to live in less saline environments, and when placed in saltwater, water would move out of their cells due to osmosis, leading to dehydration.

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**Question 19**
Cell membranes have specific protein channels for the movement of water; these structures are ___________.
**Answer:**
b) aquaporins
**Explanation:** Aquaporins are specialized protein channels that facilitate the rapid movement of water across cell membranes.

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**Question 20**
Which of the following is found in viruses and NOT in cells?
**Answer:**
c) protein capsid
**Explanation:** Viruses have a protein capsid that encases their genetic material, whereas cells do not have a capsid and instead have cellular structures such as membranes and organelles.