Exam (elaborations)

Biology 189 Final Arizona College of Nursing Questions and Answers 100% Pass

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Biology 189

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Biology 189

Biology 189 Final Arizona College of Nursing Questions and Answers 100% Pass What is the role of chlorophyll in plants? Chlorophyll absorbs sunlight, primarily in the blue and red wavelengths, enabling plants to convert light energy into chemical energy during photosynthesis. How do bio...

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biology 189 final arizona college of nursing quest

Institution Biology 189
Course Biology 189

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Biology 189 Final Arizona College of
Nursing Questions and Answers 100%
Pass

What is the role of chlorophyll in plants?

✔✔Chlorophyll absorbs sunlight, primarily in the blue and red wavelengths, enabling plants to

convert light energy into chemical energy during photosynthesis.

How do biomes influence the types of organisms found in an area?

✔✔Biomes, defined by climate and vegetation, create unique environments that determine the

adaptations and survival strategies of organisms living there, shaping biodiversity.

What is the function of the plasma membrane in cellular communication?

✔✔The plasma membrane facilitates cellular communication by using receptors that transmit

signals, allowing cells to respond to changes in their environment effectively.

How do stem cells differ from differentiated cells?

✔✔Stem cells are undifferentiated and have the potential to develop into various cell types,

while differentiated cells have specialized functions and characteristics tailored to specific roles

in the body.

1

,What is the significance of the water cycle for living organisms?

✔✔The water cycle ensures the continuous movement of water through the environment,

providing essential hydration and nutrients to all living organisms and maintaining ecosystem

health.

How does the structure of DNA contribute to its ability to replicate?

✔✔The double-helix structure of DNA, with complementary base pairing, allows it to unzip and

serve as a template for replication, ensuring accurate copying of genetic information.

What mechanisms do organisms use to adapt to their environments?

✔✔Organisms use behavioral, physiological, and structural adaptations to survive and reproduce

in their environments, such as hibernation, camouflage, and specialized feeding strategies.

What is the role of enzymes in metabolic pathways?

✔✔Enzymes act as catalysts in metabolic pathways, lowering the activation energy needed for

reactions and ensuring that biochemical processes occur efficiently and at the right pace.

How do fungi contribute to nutrient cycling in ecosystems?

2

, ✔✔Fungi decompose organic matter, breaking down complex compounds into simpler

substances, which release nutrients back into the soil, making them available for plants and other

organisms.

What is the relationship between genotype and phenotype?

✔✔Genotype refers to the genetic makeup of an organism, while phenotype is the observable

expression of those genes; the interaction between the two determines traits such as eye color or

height.

How do antibiotics target bacterial cells without harming human cells?

✔✔Antibiotics target specific features of bacterial cells, such as their cell wall or ribosomes,

which are different from human cells, allowing them to eliminate bacteria while sparing human

tissues.

What is ecological interdependence, and why is it important?

✔✔Ecological interdependence refers to the interconnected relationships among organisms

within an ecosystem, which are crucial for maintaining balance, stability, and the flow of energy

and nutrients.

How does natural selection lead to speciation?

3

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