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science > 7th Grade Review > Flashcards

7th Grade Review Flashcards

1
Q

Which members of an ecosystem are responsible for breaking down dead plants and animals

A

Decomposers

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2
Q

Who developed the double helix model of DNA

A

Watson and crick

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3
Q

The statement “all living organisms are made of one or more cells” is part of what theory

A

Cell theory

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4
Q

Which cell organelle is responsible for storage

A

Vacuole

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5
Q

Which two organelles are in plant cells only

A

Chloroplasts and cell wall

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6
Q

Which form of a sexual reproduction forms a new organism from an outgrowth or bud on another organism

A

Budding

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7
Q

Which body system is responsible for getting rid of waste

A

The excretory system

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8
Q

Why are vertebrates able to regenerate and most vertebrates are not

A

Invertebrates have fewer specialized cells the. Vertebrates have

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9
Q

If an organism reproduces asexually its offspring will be

A

Genetically identical to the parent

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10
Q

Compared to human cells resulting from mitotic cell divisions human cells resulting from mitotic cell division would have

A

Home half the number of chromosomes

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11
Q

Fertilization

A

The merging of an egg cell and a sperm cell

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12
Q

Sexual reproduction

A

Type of reproduction in which there are two parents

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13
Q

Mitosis

A

The division of one cell into many identical cells

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14
Q

Asexual reproduction

A

Type of reproduction where there is only one parent

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15
Q

Meiosis

A

Cell division necessary for sexual reproduction

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16
Q

Metamorphosis

A

Series of changes in organism undergoes as it develops from an egg to an adult

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17
Q

Organs

A

Group of tissue that works together

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18
Q

Organ system

A

Group of organs which work together

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19
Q

Cells

A

The smallest part of a living organism

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20
Q

Tissues

A

A group of cells which worked together

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21
Q

Nutrition

A

A process by which a orgasm takes in food and changes it to a usable form

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22
Q

Homeostasis

A

A maintenance of a stable internal environment

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23
Q

Which activity normally occurs in the esophagus of human

A

Process of peristalsis

24
Q

Which structure produces a substance the digest fats

A

Liver – produces bile

25
Q

In humans structures that Absorb most of the products of digestion are

A

VillI have the small intestines

26
Q

Arteries

A

They have thick walls and transport blood away from the heart

27
Q

An increase in breathing rate is caused by more

A

Carbon dioxide in the blood

28
Q

Mouth

A

Mechanical/chemical digestion

29
Q

Liver

A

Breakdown of fats

30
Q

Small intestine

A

Chemical digestion and absorption of nutrients

31
Q

Stomach

A

Protein digestion begins here

32
Q

Order tissues organisms cells and organs system in order from simplest to most complex

A

Cells tissues organs organ system

33
Q

Most of the hereditary information that determines the traits of an organism is located in

A

The nuclei of body cells of individual

34
Q

What must a leaf have for photosynthesis to occur

A

Chloroplast

35
Q

All members of a specific species, in a given time is called what

A

Population

36
Q

Animal

A

Multicellular, heterotrophic

Ex. Insect

37
Q

Protist

A

Unicellular with a neucules

38
Q

Plant

A

Multicellular, autotrophic

Ex. Tree

39
Q

Kingdom

A

The largest group in the classification of living organisms

40
Q

Fungus

A

Multicellular, heterotrophic

Ex. Mold, mushroom

41
Q

Dominant genes

Ex.(TT)

A

Trait that usually appears in offspring

42
Q

Resessive genes

Ex.(tt)

A

Gene who’s trait is not shown if paired with a dominant gene

43
Q

Heterozygous(hybrid)

Ex.(Tt)

A

Different pair of genes for a trait

44
Q

Homozygous(purebred)

Ex.(TT, tt)

A

Identical pair of genes for a trait

45
Q

Niche

A

A species role in their community

46
Q

Ecological succession

A

Process of change in the structure of an community over time

47
Q

Carnivore

A

Eats meat

48
Q

Decomposed

A

Break down food

49
Q

Producer

A

Makes their own food

50
Q

Sickle cell

A

Red blood cells form a sickle Or crescent shaped thing

51
Q

Down’s syndrome

A

One with three

52
Q

Mendel

A

Father of genetics

53
Q

Ribosomes

A

Produce protein

54
Q

Cytoplasm

A

Gel like substance that holds organelles in place

55
Q

Cell membrane

A

Controls what goes in and out of cell

56
Q 
Circulatory system
Nervous system
Endocrine system
Muscular system 
Skeletal system 
Digestive system
Excretory system
Respiratory system
A 
Moves blood thro body
Movement
Hormones
Movement(brain)
Shape/protection 
Breaks down food
Get rid of waste
Oxygen

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