THE NECESSITIES OF LIFE

 The necessities of life

      I.            Vocabulary

1.      ____________ an organism that can make its own food

2.      ____________ an organism that eats other organisms or organic matter

3.      ____________ adenosine trisphosphate

4.      ____________  a molecule made up of subunits called nucleotides

5.      ____________ an organism that gets there food by breaking down food

6.      ____________ a molecule that is made up of amino acids and that is needed to build and repair body structures and to regulate processes in the body

7.      ____________ a class of energy giving nutrients that includes sugars, starches, and fiber; contains carbon, hydrogen, and oxygen

8.      ____________a type of biochemical that does not dissolve in water

9.      ____________a lipid that contains phosphorus and that is a structural component in cell membranes

10.  ____________is a mixture of several different gases

11.  ____________the process in which plants make food

12.  ____________is a substance when 2 atoms combine

13.  ____________kind of protein that starts or speeds the chemical reactions in cells

16.  Starch is a __________

17.  Fat is a__________

   II.            Answer the questions

1.      Plants store extra sugar as

a)      Proteins

b)      Starch

c)      Nucleic acids

d)      Phospholipids

2.      Organisms store energy in

a)      Nucleic acids

b)      Lipids

c)      Phospholipids

d)      Water

3.      The subunits of  nucleic acids are

a)      Nucleotides

b)      Oils

c)      Sugars

d)      Amino acids

4.      The subunits of proteins are

a)      Nucleotides

b)      Oils

c)      Sugar

d)      Amino acids

5.      The % of water is in the body?

a)      25%

b)      90%

c)      70%

d)      95%

6.      How many amino acids form proteins?

e)      20,000

f)       15,000

g)      17,000

h)      10,000

7.      Why living things must have air?

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8.      Based on what you know about carbohydrates, lipids, and proteins, why is important for you to eat a balanced diet?

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9.      Why is water important for an organism?

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10.  What does food give organisms?

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11.  Why do some organisms compete in earth?

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12.  Which 6 elements form living things?

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III.            Complete the charts

Simple carbohydrates	Complex carbohydrates

Oils	Fats

Phospholipids	Lipids

IV.            Critical thinking

1.      Which resource do you think is most important to your survival: water, air, a place to live, or food? Explain your answer

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2.      Could life as we know it exist on earth if air contained only oxygen? Explain

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Geography, History and Prehistory

      I.            Vocabulary

1.      ____________ written and other recorded events of people

2.      ____________ time before writing was invented

3.      ____________a scientist who examines objects to learn about the human past

4.      ____________  stories passed down by word of mouth

5.      ____________ the study of earth’s surface and the processes that shape it

6.      ____________ a period of time during which early humans made stone tools

7.      ____________ a person who has no settled home

8.      ____________rich in the substances plants need to grow well

9.      ____________to adapt wild plants to human use

   II.            Answer the questions

1.      Prehistory describes the time period before

a)      People existed

b)      People used tools

c)      Clothes were made from animal skin

d)      Writing was invented

2.      During which time period did farming develop?

a)      prehistory

b)      old stone age

c)      middle stone age

d)      new stone age

3.      How can geography help us to understand history?

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4.      What are the effects of geography and climate on farming?

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5.      How did early humans find food during the old stone age?

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III.            Complete the charts

History	Prehistory

 ENTRAR A :

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CHARACTERISTICS OF LIVING THINGS

Characteristics of living things

      I.            Vocabulary

1.      ____________ the smallest unit that can perform all life process

2.      ____________ anything that causes a reaction or change in an organism or any part of an organism

3.      ____________ the maintenance of a constant internal state in a changing environment

4.      ____________  the passing the genetic traits from parent to offspring

5.      ____________ two parents produce offspring that will share characteristics of both parents

6.      ____________ the sum of all chemical process that occur in an organism

7.      ____________ a single parent produces offspring that are identical to the parent

8.      ____________the movement of muscles

9.      ____________cells get larger

10.  ____________pass through different stages

11.  Sunlight can be a __________

12.  Living things are made of  __________

   II.            Answer the questions

1.      Homeostasis means maintaining

a)      Stable internal conditions

b)      Varied internal conditions

c)      Similar offspring

d)      Varied offspring

2.      Write the 6 characteristics of living things

·        _______________________________

·        _______________________________

·        _______________________________

·        _______________________________

·        _______________________________

·        _______________________________

3.      How do you respond to some stimuli in your environment?

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4.      What does the fur coat of a bear have to do with homeostasis?

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5.      A flame can move, grow larger, and give off heat. Is a flame alive? Explain

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III.            Complete the charts

Sexual reproduction	Asexual reproduction

ANSWERS

Scientific methods

      I.            Vocabulary

1.      Scientific methods are ways in which scientists follow steps to answer questions

2.      observation any information you gather through your senses

3.      hypothesis is a possible explanation to an answer or a question

4.      predictions  are statement of cause and effect that can be used to set up a test for a hypothesis

5.      factor is anything in an experiment that can influence the experiment outcome

6.      controlled experiment an experiment that tests only one factor at time by using a comparison with a control group with an experimental group

7.      variable a factor that changes in an experiment in order to test a hypothesis

   II.            Answer the questions

1.      The steps of scientific methods

a)      Are exactly the same in every investigation

b)      Must always be used in the same order

c)      Are not always used in the same order

d)      Always end with a conclusion

2.      Give 4 reasons why scientists communicate results.

·        Repeat the experiment

·        Consider others scientists information

·        Compare hypothesis

·        New data can be added

3.      Why are predictions important?

Predictions support hypothesis

4.      Why is planning important?

Designing a good experiment requires planning

5.      How many factors should an experiment test?

At least 1