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Science > Biology - Mid Topic Test > Flashcards

Biology - Mid Topic Test Flashcards

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Biology 101 flashcards
1
Q

How many millimetres are in 1 micrometer?

A

1 micrometre = 0.001 millimetres

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2
Q

What is the nucleus and is it in the plant or animal cell?

A

This controls the activities inside the cell. Both

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3
Q

What is a tissue and a example?

A

Similar cells working together in the same way. Muscle tissue is made of muscle cells that contract and relax together.

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4
Q

What is a micrometer?

A

When you measure using a microscope it is too small to measure with millimetres so we use a much smaller unit called micrometer.

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5
Q

How would you convert 7 micrometers into millimetres?

A

0.007 millimetres

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6
Q

What is the Ocular Magnification

A

x10

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7
Q

What is the Objective Magnification?

A

x40

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8
Q

How many micrometers are in a millimetre?

A

1000 micrometers = 1 millimetre

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9
Q

All living things are made up of……?

A

Cells!

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10
Q

What are the 3 microscope magnifications?

A
  1. x10
  2. x40
  3. x400
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11
Q

What is the Overall Magnification

A

x400

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12
Q

Cells are the …….. unit of any organism

A

…… = smallest

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13
Q

What are unicellular organisms?

A

The organism is only made up of one cell

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14
Q

What are multicellular organisms?

A

The organisms are made up of more than one cell

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15
Q

What are organelles?

A

They are groups of complex molecules that help a cell survive.

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16
Q

Are all cells the same?

A

No, all cells have different types and amounts of organelles.

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17
Q

How does an individual cell survive?

A
  • Take in food
  • Take in oxygen
  • Remove waste
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18
Q

What would a larger cell have more of than a smaller cell?

A
  • mitochondria cells; to process that food into energy

- more organelles

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19
Q

When alone, what is a cell’s main purpose in life?

A

To survive!

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19
Q

What is cytoplasm and is it in a plant or animal cell?

A

It is where the cell’s chemical reactions happen. Both

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21
Q

Why would a more advance cell have a hard time surviving in a Petri dish for long?

A

Because they don’t have the right pieces to live on its own,

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22
Q

What can simpler cells do better on their own than more advanced cells?

A

Simpler cells can survive longer than more advanced cells but more advanced cells can accomplish tasks.

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23
Q

What is Mitochondria cell?

A

The chemical process of aerobic respiration happens in the Mitochondria. The Mitochondria makes energy available to the cell.

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24
Q

All living things need to carry out the SEVEN basic life processes; what are they?

A

Movement Respiration Sensitivity Growth Reproduce Excrete(pee+poo) Nutrition
(MRS GREN)

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25
Q

What is mitosis?

A

It is the simple duplication of DNA so that the two new cells (daughter cells) have exactly the same number and type of pieces of DNA that the original cell had. Two identical copies come from one original.

26
Q

Why don’t single celled organisms also become a mass of cells when they divide?

A

Because one cell dies and is replaced by another cell.

27
Q

How is cultured cells being used today?

A
  1. Vaccines to fight against diseases

2. Grow tissues

28
Q

What is a stem cell?

A

A cell that can become different cells under special conditions.

29
Q

What is the process of cell culture?

A

Growing cells separate from the original organisms.

30
Q

What is an organ and a example?

A

It is a group of tissues working together. An example would be that your heart is made up of muscle tissue. It pumps blood around your body

31
Q

What are cells and a example?

A

They are the building blocks of living organisms. An example would be muscle cells (they contract and relax)

32
Q

What is the fluid inside the phloem called?

A

Sap.

33
Q

Organs are apart of more than one system. True or False?

A

True, your kidneys are not only a part of your excretory system; they also have specific parts that serve the endocrine system.

34
Q

What is the symbol for micrometers?

A

(Ipad Photos)

34
Q

What can more advance cells do better than simple cells?

A

More advance cells can accomplish task but will not be able to survive as long on their own.

35
Q

What is a system and an example?

A

It is a group of organs working together. An example would be that the heart and blood vessels make up your blood system (circulatory system). The blood (circulatory) system carries blood around your body.

36
Q

What is a Homeostasis?

A

It is a stable internal environment that allows you (and your cells) to survive.

37
Q

Many organs have the general cells or tissues that have around the same functionality. True or False?

A

False, many organs have specific cells or tissues that have different functionality.

38
Q

What is a stem?

A

It is the main body or stalk of a plant that provides support. It is the skeleton of the plant.

39
Q

What are the 2 main tissues in a vascular bundle?

A

Xylem and Phloem.

40
Q

What are lateral buds?

A

A bud located on the side of the stem

41
Q

A bigger cell would need to eat less than a smaller cell. True or False?

A

False, A bigger cell would need to eat more than a smaller cell

42
Q

What are leaves?

A

An organism of a vascular plant which transport food and water to every part of the tree using photosynthesis.

43
Q

What is a root?

A

The part of a plant which attaches itself to the ground to collect water or to support the plant.

44
Q

What is a stomata?

A

It helps the absorption of carbon dioxide necessary for photosynthesis from the air as well as the removal of excessive oxygen. They are like lungs except it has small holes in the plant.

45
Q

What is epidermis?

A

The outer layer of cells covering an organism

46
Q

What is a cuticle

A

The outer cellular layer of a hair which protects the epidermis.

47
Q

What are guard cells?

A

They help regulate the rate of transpiration by opening and closing of the stoma.

48
Q

What are veins in a plant?

A

Veins which are vascular bundles provide support for the leaf and transport both water, minerals and food energy through the leaf and on to the rest of the plant.

49
Q

What is a cell wall and is it in a plant cell or animal cell?

A

It is strong and keeps the cell’s shape. Plant cell

50
Q

What is the main job for the phloem?

A

Transport sugar around the plant.

51
Q

What travels through the phloem?

A

Food substances.

52
Q

What is a vacuole and is it in a plant cell or an animal cell?

A

This is space full of cell sap (a solution of water, salts and sugars). Plant cell

53
Q

What is the xylem’s main job?

A

To transport water and minerals (aka salts) through the plant

54
Q

What are sieve tubes?

A

Lengthened tubes in the phloem.

55
Q

What are vessels?

A

Lengthened tubes in the xylem.

56
Q

What is Chloroplast and is it in a plant cell or animal cell?

A

These trap light energy to make food (photosynthesis). Some plant cells have chloroplast.

57
Q

What does Transpiration mean?

A

Transpiration is the process by which moisture is carried through plants from roots to small pores on the underside of leaves, where it changes to vapor and is released to the atmosphere.

58
Q

Where does the plant need sugar?

A

In photosynthesis, respiration and growth of the plant.

59
Q

What is the cell membrane and is it in the plant or animal cel?

A

This holds the cytoplasm together and it controls what substances pass in and out of the cell. Both

Science (3 decks)

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