Middle School Life Science : Middle School Life Science
Study concepts, example questions & explanations for Middle School Life Science
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Example Questions
Example Question #31 : Middle School Life Science
How do organisms get the energy they need?
Plants use energy from sunlight to make sugar molecules. Animals get energy from eating other organisms.
Plants get energy from the soil. Animals get energy directly from sunlight.
Plants do not need energy because they do not move. Animals get energy from food.
Plants get energy from fertilizers. Animals get energy from water.
Plants use energy from sunlight to make sugar molecules. Animals get energy from eating other organisms.
The answer is: Plants use energy from sunlight to make sugar molecules. Animals get energy from eating other organisms.
Photosynthesis is the process where plants use energy from the sun to create their own food. This is why plants are referred to as producers. In the process of photosynthesis, the energy from sunlight, carbon dioxide, and water are converted into sugar and oxygen through chemical reactions in plant cells. Animals do not produce their own energy, but have to eat plants or other animals to stay alive. Animals breathe in the oxygen created by photosynthesis and exhale carbon dioxide as a product through their own process called cellular respiration.
Example Question #32 : Middle School Life Science
Why are animals important to the process of photosynthesis?
Animals digest food which makes the starting materials for photosynthesis
Animals produce energy in the form of heat, which plants use for photosynthesis.
Animals breathe out carbon dioxide which is a starting material for photosynthesis.
Animals eat plants which makes space for more plants to grow.
Animals breathe out carbon dioxide which is a starting material for photosynthesis.
The answer is: Animals breathe out carbon dioxide which is a starting material for photosynthesis.
Photosynthesis is the process where plants use energy from the sun to create their own food. This is why plants are referred to as producers. In the process of photosynthesis, the energy from sunlight, carbon dioxide, and water are converted into sugar and oxygen through chemical reactions in plant cells. Animals do not produce their own energy, but have to eat plants or other animals to stay alive. Animals breathe in the oxygen created by photosynthesis and exhale carbon dioxide as a product through their own process called cellular respiration.
Example Question #33 : Middle School Life Science
Which of these are the reactants in the chemical equation for photosynthesis?
CO2 and Sunlight
Sunlight and H2O
CO2 and OH2
CO2 and H2O
CO2 and H2O
The answer is CO2 and H2O.
Photosynthesis is the process where plants use energy from the sun to create their own food. This is why plants are referred to as producers. In the process of photosynthesis, the energy from sunlight, carbon dioxide, and water are converted into sugar and oxygen through chemical reactions in plant cells. Animals do not produce their own energy, but have to eat plants or other animals to stay alive. Animals breathe in the oxygen created by photosynthesis and exhale carbon dioxide as a product through their own process called cellular respiration.
Example Question #34 : Middle School Life Science
Which of these are products in the chemical equation for photosynthesis?
C6H12O6 only
C6H12O6 and CO2
CO2 and H2O
C6H12O6 and O2
C6H12O6 and O2
The answer is C6H12O6 and O2.
Example Question #35 : Middle School Life Science
Which of these organisms uses energy from the sun to make its own food?
both of these
neither of these
an oak tree
a producer
both of these
The answer is both of these.
Photosynthesis is the process where plants use energy from the sun to create their own food. This is why plants are referred to as producers. In the process of photosynthesis, the energy from sunlight, carbon dioxide, and water are converted into sugar and oxygen through chemical reactions in plant cells. Animals do not produce their own energy, but have to eat plants or other animals to stay alive. Animals breathe in the oxygen created by photosynthesis and exhale carbon dioxide as a product through their own process called cellular respiration.
Example Question #36 : Middle School Life Science
When an organism grows, it requires matter and energy. Animals get these by consuming plants or other animals. Where do plants get their matter and energy?
from water in the ground
from nutrients in the soil
all of these
from chemical reactions that use energy from sunlight
all of these
The answer is all of these.
Photosynthesis is the process where plants use energy from the sun to create their own food. This is why plants are referred to as producers. In the process of photosynthesis, the energy from sunlight, carbon dioxide, and water are converted into sugar and oxygen through chemical reactions in plant cells. Animals do not produce their own energy, but have to eat plants or other animals to stay alive. Animals breathe in the oxygen created by photosynthesis and exhale carbon dioxide as a product through their own process called cellular respiration.
Example Question #37 : Middle School Life Science
Photosynthesis is:
The process where plants use energy from the sun to create their own food
The process where plants use energy from the sun to make the ground full of more nutrients
The use of chemical reactions to make photographs
The process of animal respiration
The process where plants use energy from the sun to create their own food
The answer is "the process where plants use energy from the sun to create their own food."
This process is why plants are referred to as producers. In the process of photosynthesis, the energy from sunlight, carbon dioxide, and water are converted into sugar and oxygen through chemical reactions in plant cells. Animals do not produce their own energy, but have to eat plants or other animals to stay alive. Animals breathe in the oxygen created by photosynthesis and exhale carbon dioxide as a product through their own process called cellular respiration.
Example Question #38 : Middle School Life Science
What product of photosynthesis is missing in the empty box from the image above?
Energy
Potassium
Magnesium
Oxygen
Oxygen
The answer is Oxygen.
Photosynthesis is the process where plants use energy from the sun to create their own food. This is why plants are referred to as producers. In the process of photosynthesis, the energy from sunlight, carbon dioxide, and water are converted into sugar and oxygen through chemical reactions in plant cells. Animals do not produce their own energy, but have to eat plants or other animals to stay alive. Animals breathe in the oxygen created by photosynthesis and exhale carbon dioxide as a product through their own process called cellular respiration.
Example Question #39 : Middle School Life Science
The image above shows the cycling of matter and energy through photosynthesis. How is energy lost in this cycle?
All of these
Energy is expended in the activity of animals.
Energy is used to help plants grow.
Energy is lost in heat in chemical reactions.
All of these
The answer is all of these.
Photosynthesis is the process where plants use energy from the sun to create their own food. This is why plants are referred to as producers. In the process of photosynthesis, the energy from sunlight, carbon dioxide, and water are converted into sugar and oxygen through chemical reactions in plant cells. Animals do not produce their own energy, but have to eat plants or other animals to stay alive. Animals breathe in the oxygen created by photosynthesis and exhale carbon dioxide as a product through their own process called cellular respiration.
Example Question #40 : Middle School Life Science
The image above shows the cycling of matter and energy through photosynthesis. How is energy lost in this cycle?
Energy is used to help plants grow.
Energy is expended in the activity of animals.
Energy is lost in heat in chemical reactions.
All of these
All of these
The answer is all of these.
Photosynthesis is the process where plants use energy from the sun to create their own food. This is why plants are referred to as producers. In the process of photosynthesis, the energy from sunlight, carbon dioxide, and water are converted into sugar and oxygen through chemical reactions in plant cells. Animals do not produce their own energy, but have to eat plants or other animals to stay alive. Animals breathe in the oxygen created by photosynthesis and exhale carbon dioxide as a product through their own process called cellular respiration.
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