Biology Midterm: 1.1 Packet Answers
Photosynthesis can be described as the process that...
uses carbon dioxide and water, in the presence of sunlight, to produce food (glucose) and oxygen.
Photosynthesis...
uses the energy in sunlight to make ATP
all animals and fungi and many single-celled organisms
heterotroph
Photosynthetic animals are autotrophs
True
Whereas photosynthesis occurs in only some organisms, cellular respiration occurs in the cells of all living things
True
The correct chemical formula for photosynthesis (in the presence of sunlight) is...
6CO2 + 6H2O ---> C6H12O6 + 6O2
Which statement best describes the relationship between a consumer and a producer? 1. A lion eating an antelope 2. A caterpillar eating a leaf 3. A snake eating a rat 4. A flower absorbing sunlight
A caterpillar eating a leaf
All organisms burn glucose to form _____ during cellular respiration
ATP
the energy-carrying molecule that cells use for energy
ATP
______ and ________ are the two types of molecules organisms use for chemical energy
ATP, glucose
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 makes ATP and glucose also recycle oxygen in Earth's atmosphere
All of them are true
Distinguish between autotrophs and heterotrophs
Autotrophs produce their own food through photosynthesis, while heterotrophs have to consume organisms for food.
Which of the following statements is true? 1. The products of photosynthesis are the reactants of cellular respiration 2. The products of cellular respiration are the reactants of photosynthesis
Both statements are true
The chemical formula for glucose is...
C6H12O6
_____, water, and energy are the products of cellular respiration
CO2
What is energy? Give an example of how energy is used in a living organism.
Energy is the ability to do work. A bird flies through the air (example of energy use in living organism)
A food chain shows how energy and matter flow from consumers to producers
False
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
Because you are able to cook your own food in a microwave oven, you are a producer
False
C6H12O6 + 6O2 ---> 6CO2 + 6H2O is the chemical reaction of photosynthesis
False
Like matter, energy is also recycled by living organisms
False
Only four types of organisms - plants, algae, fungi and some bacteria -can make food through photosynthesis
False
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. autotroph b. heterotroph c. autotroph d. heterotroph e. heterotroph
How is energy used in a cell?
It breaks down and builds up molecules and transports molecules across plasma membranes.
What are autotrophs considered the basis of food chains?
They produce the food not only for themselves but for all other living things as well.
All life needs energy
True
As mushrooms are fungi, they are heterotrophs
True
Autotrophs are producers
True
Glucose is a carbohydrate that stores chemical energy in a concentrated and stable form
True
Heterotrophs cannot make their own food
True
Many scientists consider photosynthesis to be the most important life process of Earth
True
Only autotrophs can perform photosynthesis
True
Which of the following autotrophs is also a producer?
all of them, autotrophs ARE producers.
organisms that make their own food
autotroph
_____________ make their own food, whereas __________ get food by eating other living things.
autotrophs, heterotrophs
__________ is the process in which energy from glucose is transferred to glucose
cellular respiration
the process in which glucose is broken down and ATP is made
cellular respiration
Photosynthesis occurs in the ___________ and cellular respiration occurs in the _______________
chloroplast, mitochondria
organisms that must eat
consumer
stores chemical energy in a concentrated, stable form
glucose
organism at the end of the food chain
decomposer
Living organisms get their ________ from food
energy
the ability to do work
energy
Heterotrophs are living things that cannot make their own _______
food
organic molecules that store energy in their chemical bonds
food
shows how energy and matter flow from producers to consumers
food chain
Glucose and ______ are the products of photosynthesis
oxygen
without photosynthesis, there would be no _______ in the atmosphere.
oxygen
process that stores energy from sunlight in the chemical bonds of glucose
photosynthesis
also known as autotrophs
producer
In the food chain grass --> grasshopper --> snake --> hawk, which organism(s) are the heterotrophs?
the grasshopper, snake and hawk
Photosynthesis is the process in which energy from _______ is transferred to glucose
the sun
