Session #25

Session #25

Assessment

Flashcard

Biology

University

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the function of the complement system in the immune response?

Back

The complement system enhances the ability of antibodies and phagocytic cells to clear pathogens from an organism. It promotes inflammation, opsonization, and the formation of the membrane attack complex.

2.

FLASHCARD QUESTION

Front

What is the role of the sigma factor in bacterial transcription?

Back

Sigma factors are proteins that bind to RNA polymerase and direct it to specific promoters, initiating transcription. They are crucial for the regulation of gene expression in bacteria.

3.

FLASHCARD QUESTION

Front

Define amensalism in ecological terms.

Back

Amensalism is a type of interaction between two species where one is harmed while the other is unaffected. An example is the production of penicillin by Penicillium chrysogenum, which inhibits bacterial growth.

4.

FLASHCARD QUESTION

Front

What is the significance of the sigma factor spo0A?

Back

Spo0A is known as the 'Master regulator' in Bacillus subtilis, controlling the initiation of sporulation and other developmental processes.

5.

FLASHCARD QUESTION

Front

What does the appearance of the spore core indicate during germination?

Back

The core of the spore appears black near the end of germination, indicating that metabolic activity is resuming as the spore transitions to a vegetative state.

6.

FLASHCARD QUESTION

Front

What is the role of σG in bacterial sporulation?

Back

σG is a sigma factor that activates the expression of genes necessary for the later stages of sporulation in Bacillus subtilis.

7.

FLASHCARD QUESTION

Front

Explain the term 'phagocyte recruitment' in the immune system.

Back

Phagocyte recruitment refers to the process by which immune cells, such as macrophages and neutrophils, are attracted to sites of infection or inflammation to engulf and destroy pathogens.

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