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Life Flashcards

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Biology 101 flashcards
1
Q

How much of a jellyfish is made of water?

A

90 %

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2
Q

What do scientists look for on Mars to reveal life?

A

Water.

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3
Q

What are the characteristics of life?

A 
Metabolism
Reproduction
Growth
Irritability
Motion
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4
Q

How much of a plant is made of water?

A

75 %

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5
Q

What is Nutrition?

A

Nutrition is how an organism obtains food.

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6
Q

What is the first part of metabolism?

A

Nutrition

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7
Q

What is Biology?

A

Biology is the study of life.

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8
Q

What is the first characteristic of life?

A

Metabolism

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9
Q

What is the second part of metabolism?

A

Digestion

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10
Q

What is digestion?

A

Your body breaking down food to the size of molecules.

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11
Q

What are the parts of metabolism?

A

Nutrition
Digestion
Respiration
Synthesis

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12
Q

How long does digestion take if you eat a meal?

A

4-5 hours.

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13
Q

What is the final destination of the food you eat?

A

Every living cell in your body.

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14
Q

What happens to the cells if they don’t get nutrition?

A

The cells will die.

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15
Q

What is the third part of metabolism?

A

Respiration.

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16
Q

What is respiration?

A

Respiration is the changing of food (carbs) into energy.

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17
Q

What does energy do?

A

Energy drives chemical reactions in your body.

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18
Q

What is the fourth step of metabolism?

A

Synthesis.

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19
Q

What is synthesis?

A

Synthesis is the use of the rest of your food and energy to create bigger structures.

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20
Q

What is the second characteristic of life?

A

Reproduction.

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21
Q

What is reproduction?

A

Reproduction is an organism’s ability to duplicate.

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22
Q

What are the two types of reproduction?

A

The types of reproduction are asexual and sexual reproduction.

23
Q

What is asexual reproduction?

A

Reproduction by one parent.

24
Q

How do the children of asexual reproduction look compared to their parents?

A

They look exactly the same. They are clones.

25
Q

What is sexual reproduction?

A

Reproduction by two parents.

26
Q

What percent of their parents is a child of sexual reprodcution?

A

50% one parent, and 50% the other.

27
Q

Which type of reproduction is better?

A

It depends on the circumstance.
Sexual reproduction is better for changing environments.
Asexual reproduction is better for non-changing environments.

28
Q

What is the third characteristic of life?

A

Growth.

29
Q

What is growth?

A

Growth is an increase in size due to synthesis reactions.

30
Q

What is the fourth characteristic of life?

A

Irritability.

31
Q

What is irritability?

A

Irritability is the ability to react to environmental changes.

32
Q

What is the fifth characteristic of life?

A

Motion.

33
Q

What is motion?

A

Motion is the ability to move under your own power.

34
Q

What are the two major types of getting nutrition?

A

Autotrophism and Heterotrophism.

35
Q

What are autotrophs?

A

Autotrophs are organisms that make their own food.

36
Q

What are heterotrophs?

A

Heterotrophs are organisms that eat other organisms.

37
Q

What are the two ways of autotrophism?

A

Chemosynthesis and Photosynthesis.

38
Q

What is chemosynthesis?

A

Chemosynthesis is using chemical energy to make food.

39
Q

What is photosynthesis?

A

Photosynthesis is using light energy to make food.

40
Q

What are the different types of heterotrophs?

A

Parasites, Saprotrophs, and Holotrophs.

41
Q

What is a parasite?

A

Parasites are organisms that steal food from a host.

42
Q

Do parasites have a digestive system?

A

Parasites do not have a digestive system.

43
Q

Which part of metabolism do parasites skip?

A

Parasites skip digestion.

44
Q

Is chemosynthesis common?

A

Chemosynthesis is very rare.

45
Q

What organism is an example of an organism that uses chemosynthesis?

A

Sulfer Bacteria.

46
Q

What organism is an example of an organism that uses photosynthesis?

A

An oak tree.

47
Q

What is a saprotroph?

A

Saprotrophs are organisms that feed off of other dead organisms without using a mouth.

48
Q

Does a saprotroph go through internal or external digestion?

A

A saprotroph goes through external digestion.

49
Q

What are two examples of saprotrophs?

A

Fungi and most bacteria.

50
Q

Which type of heterotroph causes decay?

A

Saprotrophs cause decay.

51
Q

What is a holotroph?

A

Holotrophs are organisms that ingest whole cells using a mouth.

52
Q

Does a holotroph go through internal or external digestion?

A

A holotroph goes through internal digestion.

53
Q

What is an example of a holotroph?

A

Human beings.

54
Q

What is an example of a parasite?

A

Tape worms

Science (21 decks)

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