Workbook 4.1 Questions

What is energy? Give an example of how energy is used in a living organism.
Energy – the ability to do work. A bird flies through the air, a firefly glows in the dark, a dog wags its tail
Distinguish between autotrophs and heterotrophs.
Autotrophs are organisms that make their own food. Heterotrophs are living things that cannot make their own food.
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Determine if the following are autotrophs or heterotrophs: (a) a giant redwood tree, (b) a spider, (c) a rose bush, (d) a mushroom, € a blue whale.
(a)Autotroph, (b)Heterotroph, (c)Autotroph, (d)Heterotroph, (e)Heterotroph
How is energy used in a cell?
Energy is required to break down and build up molecules and to transport molecules across plasma membranes. All life’s work needs energy. A lot of energy is also simply lost to the environment as heat.
Why are autotrophs considered the basis of food chains?
Autotrophs are also called producers. They produce food not only for themselves but for all other living things as well. This is why autotrophs form the basis of food chains.
Photosynthesis
a. uses the energy in sunlight to make food.
b. uses the glucose in sunlight to make food.
c. uses the energy in sunlight to make ATP.
d. breaks down glucose to form ATP.
Which of the following autotrophs is also a producer?
a. a maple tree
b. the blue-green bacteria known as cyanobacteria
c. Laurencia, a marine genus of Red Algae from Hawaii.
d. All of the above are producers.
In the food chain grass → grasshopper → snake → hawk, which organism(s) are the heterotrophs?
a. the grass
b. the grass and grasshopper
c. the hawk
d.the grasshopper, snake, and hawk
Which of the following statements is true about glucose and ATP? (1) Glucose is made during photosynthesis. (2) The energy in sunlight is temporarily stored in glucose before it is transferred to ATP. (3) ATP is the energy-carrying molecule that cells use for energy. (4) The processes that make ATP and glucose also recycle oxygen in Earth’s atmosphere.
a. statement 1 only
b. statements 2 and 3 only
c. statements 1, 2, and 3 only
d. All 4 statements are correct.
Photosynthesis can be described as the process that
a. uses carbon dioxide and water, in the presence of sunlight, to produce food (glucose) and oxygen.
b. uses glucose and oxygen to produce energy for the cell (ATP), releasing carbon dioxide and water.
c. uses glucose and oxygen, in the presence of sunlight, to make ATP.
d. uses carbon dioxide and water, in the presence of sunlight, to produce ATP and oxygen.
Which statement best describes the relationship between a consumer and a producer?
a. A lion eating an antelope.
b. A caterpillar eating a leaf.
c. A snake eating a rat.
d. A flower absorbing sunlight.
Which of the following statements is true?
a. The products of photosynthesis are the reactants of cellular respiration.
b. The products of cellular respiration are the reactants of photosynthesis.
c. Both statements are true.
d. Neither statement is true.
The correct chemical formula for photosynthesis (in the presence of sunlight) is
a. 6CO2 + 6O2 → C6H12O6 + 6H2O.
b. 6CO2 + 6H2O → C6H12O6 + 6O2.
c. C6H12O6 + 6O2 → 6CO2 + 6H2O
d. C6H12O6 + 6CO2 → 6O2 + 6H2O
The process in which glucose is broken down and ATP is made
cellular respiration
organism at the end of a food chain
decomposer
shows how energy and matter flow from producers to consumers
food chain
also known as autotrophs
producer
the ability to do work
energy
stores chemical energy in a concentrated, stable form
glucose
the energy-carrying molecule that cells use for energy
ATP
process that stores energy from sunlight in the chemical bonds of glucose
photosynthesis
organisms that make their own food
autotroph
all animals and fungi and many single-celled organisms
heterotroph
organisms that must eat
consumer
organic molecules that store energy in their chemical bonds
food
Heterotrophs are living things that cannot make their own ____________.
Food
____________ and ____________ are the two types of molecules organisms use for chemical energy.
Glucose, ATP
Glucose and ____________ are the products of photosynthesis.
Oxygen
____________, water, and energy are the products of cellular respiration.
Carbon Dioxide
Photosynthesis is the process in which energy from ____________ is transferred to glucose.
Light
____________ is the process in which energy from glucose is transferred to ATP.
Cellular Respiration
Without photosynthesis, there would be no ____________ in the atmosphere.
Oxygen
All organisms burn glucose to form ____________ during cellular respiration.
ATP
The chemical formula of glucose is ____________.
C6H12O6
Photosynthesis occurs in the ____________, and cellular respiration occurs in the ____________.
Chloroplasts, Heterotrophs
____________ make their own food, whereas ____________ get food by eating other living things.
Autotrophs, Heterotrophs
Living organisms get their ____________ from food.
Energy
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