When a Bacillus Anthracis Population Suddenly Must Form Spores to Survive

question 76

Multiple Choice

When a Bacillus anthracis population suddenly must form spores to survive a harsh nutrient poor environment, how do the cells obtain energy?

• A) Cells in a growth phase that have not used up all of their energy will be the only ones to make endospores, which is why relatively few endospores are often made from a large population.
• B) Intracellular energy reserves are quickly made available to produce endospores.
• C) Slow responding cells are cannibalized by others that already began spore formation.
• D) Global regulation is initiated to minimize energy waste in biosynthetic pathways and catabolic pathways are increased to consume remaining usable substrates to fuel spore formation.

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Definitions:

Cross-modal Transference

The ability to transfer sensory information from one modality to another, such as identifying objects by touch that have only been seen before.

Tertiary Circular Reactions

The fifth stage in Piaget's sensorimotor stage of cognitive development, occurring from about 12 to 18 months of age, where infants explore the environment and understand causality through trial and error.

Representational Ability

The cognitive skill to use symbols or signs to stand for objects, actions, or ideas, facilitating communication and abstract thinking.

Habituation

The process by which an individual becomes accustomed to a stimulus, leading to a decrease in response over time.