STAAR TOPIC 1

Front

What happens when the level of carbon dioxide in the blood is too high?

Back

Excess carbon dioxide reacts with water to produce carbonic acid, which lowers blood pH, making it more acidic.

Front

What is the role of chemoreceptors in the brain regarding blood pH?

Back

Chemoreceptors detect changes in blood pH and instruct the body to take actions to maintain homeostasis.

Front

What is one response the body can take to eliminate excess carbon dioxide?

Back

Breathing more deeply and frequently helps to expel excess carbon dioxide.

Front

How do plants respond to drought conditions to maximize water retention?

Back

Plants may decrease stem and leaf growth while increasing root growth to retain water.

Front

What is the main function of stomata in plant leaves?

Back

Stomata are responsible for gas exchange, allowing carbon dioxide in and oxygen out.

Front

How much energy is available to secondary consumers if producers provide 54,000 Joules?

Back

5,400 Joules are available to secondary consumers, as energy decreases at each trophic level.

Front

What impact does the introduction of invasive species like Caulerpa have on biodiversity?

Back

Invasive species can dominate ecosystems and reduce biodiversity by outcompeting native species.

Front

What is homeostasis in the context of blood pH?

Back

Homeostasis refers to the body's ability to maintain stable internal conditions, including blood pH.

Front

What is the significance of root growth in plants during drought?

Back

Increased root growth allows plants to access deeper water sources and retain moisture.

Front

What is the relationship between energy transfer in an ecosystem and trophic levels?

Back

Energy transfer decreases at each trophic level, with producers having the most energy and higher consumers having less.