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Algae Exam Quiz

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Questions and Answers

What is the main habitat of most algae?

Freshwater environments (correct)

Desert regions

Arctic tundra

Deep ocean trenches

What is the primary characteristic of algae?

They are parasitic to other plants

They reproduce only through spores

They are photosynthetic organisms (correct)

They are all multicellular

Which pigment gives many algae their characteristic green color?

Chlorophyll (correct)

Phycoerythrin

Carotenoids

Phycocyanin

Explain the structure and function of viruses in relation to their classification within the microbial world.

Viruses are non-living entities composed of genetic material (DNA or RNA) surrounded by a protein coat. They are obligate intracellular parasites that require a host cell to replicate. Viruses are classified based on their genetic material, structure, and mode of replication. Signup and view all the answers

Discuss the impact of viruses on the environment and their role in the ecosystem.

Viruses play a crucial role in the environment by influencing the abundance and diversity of microbial communities. They impact nutrient cycling, genetic diversity, and the evolution of microbial populations. Additionally, viruses can regulate the population sizes of their host organisms. Signup and view all the answers

Describe the mechanisms of viral infection and the host immune response against viral pathogens.

Viral infection occurs through attachment, penetration, replication, assembly, and release. The host immune response involves both innate and adaptive immunity, including the production of interferons, activation of phagocytic cells, and the generation of specific antibodies and T cells targeting viral antigens. Signup and view all the answers