Characteristics of Living Things
The necessities of life
Carbohydrates
Lipids/Proteins/Nucleic Acids
Food Chain/Food Web
100
How many cells do humans have?
trillions of cells
100
What percentage of our body is water?
70%
100
What are carbohydrates for?
They give us energy
100
What does hydrophobic mean?
Water hater
100
What are Producers?
Organisms that make their own food
200
What is heredity?
The passing of traits from one generation to the next
200
Where do desert-dwelling kangaroos get water from?
ONLY the food they eat. Since they live in the desert, there is no water around.
200
What are the two types of carbohydrates?
Complex and simple
200
Give an example of a hydrophobic substance
Any type of lipids (oils, fats)
200
What are consumers?
Organisms that eat other organisms
300
What is sexual reproduction? what is asexual reproduction?
Sexual: two parents get together to form an offspring. The offspring resembles both parents Asexual: a single organism grows and divides
300
Name 3 of the 4 necessities of life
- water - air - a place to live - food
300
What are simple carbohydrates? what are complex carbohydrates?
simple: few sugar molecules linked together complex: hundreds of molecules linked together
300
What do a lot of amino acids linked together form?
proteins
300
What are decomposers?
Organisms that get energy by breaking down the remains of dead organisms or animal wastes
400
What is homeostasis? Give an example
The maintenance of a constant internal environment. example: sweating when it is hot
400
What are proteins for? a) give us energy b) store energy c) protect cells
c
400
How can you determine if something is a simple or a complex carbohydrate? (Name one of the two reagents we used in lab)
By using Iodine or Benedict reagent
400
What do a lot of glycerol and fatty acids linked together form?
lipids
400
Give an example of a producer, a consumer and a decomposer
producer: grass, plants, trees consumer: human, lion, rabbit decomposer: bacteria, fungi
500
Name 3 of the 6 characteristics of living things
- have cells - sense and respond to change - reproduce - have DNA - use energy - grow and develop
500
What is ATP? a) a molecule that carries energy to the cells b) a molecule that hates water b) a molecule that stores energy
a
500
If you have a complex carbohydrate and you put Iodine on it, what can you expect?
The sample is going to turn dark purple or black
500
An example of a nucleic acid
DNA
500
Give a definition for: 1- primary consumer 2- secondary consumer 3- tertiary consumer
Primary: organisms that eat producers (plants) Secondary: organisms that eat primary consumers Tertiary: organisms that eat secondary consumers
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