Biology 1
What is Homeostasis?
The body’s ability to maintain a stable internal environment.
A diagram showing many interconnected food chains is called a ______.
Food Web
Which sport is known as “the world game”?
Football/Soccer
Write the word equation for photosynthesis.
Carbon dioxide + water → glucose + oxygen.
What type of reaction is combustion?
Exothermic
This organ monitors and controls blood glucose levels.
The Pancreas
In a food chain, this organism is always at the start.
Producer
In technology, what does “URL” stand for?
Uniform Resource Locator
Write the word equation for cellular respiration.
Glucose + oxygen → carbon dioxide + water + energy.
Combustion reactions release this type of energy.
Heat/light (energy).
Explain why muscles fatigue more quickly in smokers during physical activity.
Less oxygen available → muscles switch to anaerobic respiration sooner → lactic acid builds → quicker fatigue.
In a food chain, the amount of energy passed from one level to the next is roughly what percentage?.
10%
What is the longest bone in the human body?
The Femur (Thigh Bone)
Describe one major way photosynthesis and cellular respiration are opposite.
Photosynthesis stores energy; respiration releases energy.
Combustion is a chemical reaction that requires a fuel, heat, and this gas.
Oxygen
Name one way the liver helps restore blood glucose levels during low glucose conditions.
Converts glycogen to glucose / releases glucose into the blood.
When blood glucose levels fall, this hormone is released to increase glucose in the blood.
Glucagon.
What is the largest planet in our solar system?
Jupiter
Burning magnesium produces this white solid.
Magnesium Oxide
What is the word equation for a combustion reaction?
Fuel + Oxygen → Carbon Dioxide + Water
Describe the negative feedback loop that returns low blood glucose to normal.
Low glucose is detected → glucagon released → liver breaks down glycogen → glucose increases → levels return to normal → glucagon stops (negative feedback).
Explain why removing one species can affect multiple organisms in a food web.
Interdependence: removing one species affects predators, prey, and energy flow throughout the web.
Which famous ship sank in the Atlantic Ocean in 1912?
The Titanic
Explain why incomplete combustion produces carbon monoxide instead of carbon dioxide.
Not enough oxygen present → carbon only partially burns → carbon monoxide forms.
What is the chemical formula for carbon dioxide?
CO₂