Question 1

Which group of organisms is responsible for producing more than 50% of the world's oxygen through photosynthesis?

Accepted Answer

Cyanobacteria and chlorophyll-containing algae

Question 2

The polysaccharide found in the cell walls of red algae that is commonly used as a solidifying agent in molecular biology is:

Accepted Answer

Agar

Question 3

Which of the following statements best describes the nutritional strategy of fungi?

Accepted Answer

They absorb nutrients from decaying organic matter.

Question 4

Which of the following is NOT a characteristic of yeast at 37°C?

Accepted Answer

Formation of hyphae

Question 5

Which of the following cell wall compositions is unique to fungi?

Accepted Answer

Chitin

Question 6

Which of the following best describes the life cycle of basidiomycetes (mushrooms)?

Accepted Answer

They exist mostly as vegetative mycelium underground and produce fruiting bodies above ground during sexual reproduction.

Question 7

Which of the following is a major difference between bacterial and eukaryotic cells?

Accepted Answer

Bacteria lack a nucleus, while eukaryotes have a nucleus.

Question 8

Which of the following algae groups is a major source of the world’s oxygen supply and includes diatoms?

Accepted Answer

Chrysophyta

Question 9

Which of the following fungal forms do NOT normally have hyphae associated with them when they are at 37°C?

Accepted Answer

Yeast

Question 10

Which of the following is a correct description of lichens?

Accepted Answer

Communities of fungi, yeast, and algae or cyanobacteria

Question 11

Which of the following is a distinguishing feature of eukaryotic flagella compared to prokaryotic flagella?

Accepted Answer

Eukaryotic flagella have a '9 + 2' arrangement of microtubules.

Question 12

Which of the following is a real-world application of brown algae (Phaeophyta)?

Accepted Answer

Source of alginate used medicinally

Question 13

A multicellular fungus is a _________ and is characterized by fungal __________.

Accepted Answer

Mold / hyphae

Question 14

Which of the following is NOT a function of fungal spores?

Accepted Answer

Photosynthesis

Question 15

Which equation best represents the process of photosynthesis carried out by algae?

Accepted Answer

$$6CO_2 + 6H_2O \rightarrow C_6H_{12}O_6$ + 6O_2$$

Question 16

Which of the following is a major structural component of fungal cell walls?

Accepted Answer

Chitin

Question 17

Which of the following is a plausible reason why fungal spores are often found in air-conditioner filters?

Accepted Answer

Fungal spores are airborne and resistant to drying, allowing them to be carried by air currents.

Question 18

Which of the following best describes the difference between septate and aseptate hyphae?

Accepted Answer

Septate hyphae have cross-walls dividing the cells, while aseptate hyphae lack cross-walls.

Question 19

Which of the following is a correct description of dimorphic fungi?

Accepted Answer

They can switch between yeast and mold forms depending on environmental conditions.

Question 20

Which of the following is a beneficial use of fungi in real-world applications?

Accepted Answer

Absorption and bioremediation of pollutants

lec 15

Study Guide - Practice Questions