Chapter 1, Section 1 Flashcards Preview

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Flashcards in Chapter 1, Section 1 Deck (25)
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1
Q

What are the characteristics of living organisms?

A
Cellular organization
Contain similar chemicals
Use energy
Respond to their surroundings
Grow and develop
Reproduce
2
Q

All organisms are made up of small building blocks called _______?

A

Cells

3
Q

What is the basic unit of structure and function in an organism?

A

Cell

4
Q

What is a singe-celled organism called and what is an example of one?

A

Unicellular

Bacteria

5
Q

What are organisms composed of many cells called?

A

Multicellular

6
Q

In multicellular organisms, the cells are specialized to do what? Give an example.

A

Certain tasks, for example, nerve cells in your body carry messages about your surroundings to your brain.

7
Q

Give three examples of chemicals in cells?

A
Water
Carbohydrates
Protein
Lipids
Nucleic acids
8
Q

The cells of organisms use energy to do what living things must do. List two examples of this.

A

Grow and repair injured parts

Stomach and intestines digesting food

9
Q

What is a change in an organisms surrounding that causes the organism to react called? What are three examples?

A

Stimulus

Temperature, light, sound

10
Q

All organisms react to changes in their surroundings. Give one example.

A

A plant that bends toward to light.

11
Q

What is it called when an organism reacts to a stimulus with an action or change in behavior?

A

Response

12
Q

What is the process of becoming larger?

A

Growth

13
Q

What is the process of change that occurs during an organism’s life to produce a more complex organism?

A

Development

14
Q

What is the ability to produce offspring called? What is an example?

A

Reproduce

Robins lay eggs that develop into young robins

15
Q

What are the four needs of living things?

A

Food
Water
Living space
Stable internal conditions

16
Q

What are organisms called that makes their own food? What is an example?

A

Autotrophs

Plants

17
Q

What are organisms called that can’t make their own food? Give an example.

A

Heterotrophs

Animals

18
Q

All living things need water to survive. Give three reasons why?

A
To obtain chemicals from their surroundings
Break down food
Grow
Move substances within their bodies
Reproduce
19
Q

True or false
One property of water that is vital to living things is its ability to dissolve more chemicals than any other substance on Earth.

A

True

20
Q

Because there is limited space on earth, some organisms must compete for space. Give an example of this?

A

Trees in a forest compete for sunlight.

21
Q

What is the maintenance of stable internal conditions called? What is an example?

A

Homeostasis
Sweating helps your body maintain a steady body temperature. Your body sweats when you exercise, as the sweat evaporates, it cools your body down.

22
Q

What is one factor a scientist changes called?

A

Manipulated variable

23
Q

What is the mistaken idea that living things can arise from nonliving things called?

A

Spontaneous generation

24
Q

How did Redi disprove spontaneous generation? What was the manipulated variable?

A

He put meat in two jars, one covered (but still let air in) and one uncovered. After a few days he saw maggots (young flies) on the open jar but not the covered jar. He concluded that decaying meat didn’t produce maggots.
Manipulated variable: whether or not the jar was covered.

25
Q

What did Pasteur’s experiment prove?

A

It proved that bacteria arise only from existing bacteria.