biology 4.1 quiz

Determine if the following are autotrophs or heterotrophs: (a) a giant redwood tree, (b) a spider, (c) a rose bush, (d) a mushroom, (e) a blue whale.

A & C = autotrophs, B D & E = heterotrophs.

All organisms burn glucose to form ____________ during cellular respiration.

ATP

____________ and ____________ are the two types of molecules organisms use for chemical energy.

ATP , glucose

What is an autotroph? Give an example.

An autotroph is an organism that makes its own food. An example is algae.

Why are autotrophs considered the basis of food chains?

Autotrophs are producers and therefore are the bottom of the food chain.

Distinguish between autotrophs and heterotrophs.

Autotrophs make their own food through photosynthesis and heterotrophs eat other organisms for food.

The chemical formula of glucose is ____________.

C₆H₁₂O₆

What is energy? Give an example of how energy is used in a living organism.

Energy is the ability to do work. An example is cellular respiration in organisms.

Define energy, and state where living things get the energy they need.

Energy is the ability to do work. Living things get energy from food.

How is energy used in a cell?

Energy is used in a cell for cellular respiration and for some organisms its used for photosynthesis.

Explain why living things need both glucose and ATP.

Glucose and ATP balance each other out. Both are very efficient and give the cells energy, but glucose alone would be too much and ATP alone would be too little.

How do heterotrophs obtain food?

Heterotrophs obtain food by consuming other organisms.

How does photosynthesis change energy?

Photosynthesis changes light energy into chemical energy.

Compare and contrast photosynthesis and cellular respiration. Why are the processes like two sides of the same coin?

Photosynthesis makes glucose and cellular respiration burns it. Photosynthesis releases oxygen and cellular respiration uses it. They are like two sides of the same coin because their processes are similar yet opposite.

Explain how living things recycle oxygen in Earth's atmosphere.

Through photosynthesis and cellular respiration, carbon dioxide and oxygen and other energy molecules are recycled. These gases and molecules help make up the earth's atmosphere and therefore help recycle it.

____________ make their own food, whereas ____________ get food by eating other living things.

autotrophs , heterotrophs

____________, water, and energy are the products of cellular respiration.

carbon dioxide

____________ is the process in which energy from glucose is transferred to ATP.

cellular respiration

Photosynthesis occurs in the ____________, and cellular respiration occurs in the ____________.

chloroplasts , mitochondrion

Living organisms (including plants) get their ____________ from food.

energy

t/f A food chain shows how energy and matter flow from consumers to producers.

false

t/f ATP is the "energy currency" of the cell, so it makes sense that a molecule of ATP contains much more chemical energy than a molecule of glucose.

false

t/f Because you are able to cook your own food in the microwave oven, you are a producer.

false

t/f C6H12O6 + 6O2 > 6CO2 + 6H2O is the chemical reaction of photosynthesis.

false

t/f Like matter, energy is also recycled by living organisms.

false

t/f Only four types of organisms — plants, algae, fungi and some bacteria — can make food through photosynthesis.

false

t/f Photosynthetic animals are autotrophs.

false

Heterotrophs are living things that cannot make their own ____________.

food

Photosynthesis is the process in which energy from ____________ is transferred to glucose.

light

Glucose and ____________ are the products of photosynthesis.

oxygen

Without photosynthesis, there would be no ____________ in the atmosphere.

oxygen

t/f All life needs energy.

true

t/f As mushrooms are fungi, they are heterotrophs.

true

t/f Autotrophs are producers.

true

t/f Glucose is a carbohydrate that stores chemical energy in a concentrated and stable form.

true

t/f Heterotrophs cannot make their own food.

true

t/f Many scientists consider photosynthesis to be the most important life process on Earth.

true

t/f Only autotrophs can perform photosynthesis.

true

t/f Whereas photosynthesis occurs in only some organisms, cellular respiration occurs in the cells of all living things.

true