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DPS Biology Sem 2 Final Review
DPS Biology Sem 2 Final Review
44
Science
9th Grade
05/06/2015

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Term
When plants go through the process of photosynthesis they get carbon dioxide from ....
Definition
the air.
Term
All organisms, such as plants or animals, must use .... to function.
Definition
energy and nutrients
Term
When plants go through the process of photosynthesis, they change light energy from the sun into .... energy stored in the bonds molecules
Definition
chemical
Term
What does ATP stand for?
Definition
This stands for a molecule called adenosine triphosphate.
Term
What does ADP stand for?
Definition
This stands for a molecule called adenosine diphosphate.
Term
What are ATP and ADP used for?
Definition
These molecules store and release small amounts of energy for cells.
Term
Molecules of nutrients/food can be stored for .....
Definition
quick use in the form of ATP.
Term
What is the main source of energy that drives life on our planet?
Definition
The sun
Term
What is cellular respiration?
Definition
The process of cells breaking down nutrients (such as sugar) into energy and giving off carbon dioxide and water. Both plants and animals can go through cellular respiration.
Term
What is photosynthesis?
Definition
The process that mainly occurs in plants in which the sun's energy is used to convert carbon dioxide and water in to stored food (such as sugar).
Term
How are the cellular respiration and photosynthesis reactions related?
Definition
These are pretty much the same reactions but the opposite of each other. Cellular respiration takes in sugar and oxygen then gives off carbon dioxide and water. Photosynthesis takes in carbon dioxide and water to make sugar and oxygen.
Term
What does DNA stand for?
Definition
Deoxyribonucleic acid
Term
What is the role of DNA?
Definition
It keeps the code for all the directions for our body such as to make all the different proteins.
Term
What does RNA stand for?
Definition
Ribonucleic acid
Term
What does DNA have to do with RNA?
Definition
DNA transfers the information to the RNA so RNA can make proteins
Term
What is meant by growth and differentiation?
Definition
This is when cells or an organism gets larger and changes - such as when a child matures into an adult or as when a cell becomes specialized as part of a tissue.
Term
What is a producer?
Definition
This is an organism such as a plant that makes food by the process of photosynthesis.
Term
What is a consumer?
Definition
This is an organism that eats another organism to get its energy.
Term
What is a primary consumer?
Definition
This is an organism that only eats/consumes producers (ie: is a plant eater/herbivore).
Term
What is a secondary consumer?
Definition
This is an organism that eats herbivores (eats animals that were plant eaters) For example, a bird that eats a worm is a secondary consumer.
Term
What is a tertiary consumer?
Definition
This is an organism at the top of the food chain that only eats organisms that were meat-eaters/carnivores.
Term
True of false - Plants go through both photosynthesis and cellular respiration.
Definition
True
Term
What is an herbivore?
Definition
an organism that only eats plants
Term
What is a carnivore?
Definition
an organism that only eats animals
Term
What is an omnivore?
Definition
an organism that eats plants and animals
Term
What is an autotroph?
Definition
an organism that makes its own food such as a plant - this is another name for a producer
Term
Where in a plant does photosynthesis occur?
Definition
In the chloroplasts which are organelles inside the plant's leaves and other green parts
Term
Where is genetic information of an organism kept?
Definition
It is kept in code on the DNA molecules which are found in the nucleus of our cells.
Term
The DNA keeps the code to make....
Definition
proteins.
Term
What happens when genetic information from one individual is crossed with the information from another individual?
Definition
The genetic information can recombine into new arrangements - for example tall pea plants can be crossed with short pea plants
Term
When traits are expressed it is the result of ....
Definition
both the genetic information in the organism's cells and the environment where the organism lives
Term
What is meant by the term predator?
Definition
This is an organism that hunts other organisms.
Term
What is meant by the term, prey?
Definition
This is an organism that is hunted by another organism.
Term
What is symbiosis?
Definition
This is when two or more organisms benefit from living with each other.
Term
What will happen if the predator population increases?
Definition
The prey population will decrease?
Term
What will happen if the prey population increases?
Definition
The predator population will increase.
Term
What is meant by the term, competition?
Definition
This is when two or more organisms attempt to acquire the same resource - ie: attempt to eat the same food or use the same shelter.
Term
DNA molecules are made of base pairs. Which bases are paired with each other?
Definition
Adenine (A) with Thymine (T)
Cytosine (C) with Guanine (G)
Term
What is mitosis?
Definition
This is a cell division process which results in new daughter cells being exactly like the original parent cells - have same number of chromosomes
Term
What is meiosis?
Definition
This is a process of cell division which results in the daughter cells having only half of the number of chromosomes as the original cells. Examples of these cells are egg and sperm.
Term
Give some examples of carbohydrates.
Definition
sugars (such as glucose or fructose), starch (such as in bread or rice), cellulose (such as in celery)
Term
Give examples of proteins.
Definition
Structural proteins (such as in muscle that makes up meat)
Enzymes (such as amylase that breaks down starch)
Term
Give examples of lipids
Definition
fats and oils
Term
What is the purpose of an enzyme?
Definition
To help reduce the energy/heat needed for a chemical reaction in your body such as to digest food.
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