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Grade 10 - Science > Biology > Flashcards

Biology Flashcards

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Biology 101 flashcards
1
Q

The basic unit of life is the organelle.

A

False

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2
Q

Only animal cells have cell walls.

A

False

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3
Q

The cytoplasm includes the organelles and other life-supporting materials.

A

True

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4
Q

Osmosis involves the diffusion of water through a permeable membrane.

A

False

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5
Q

When a substance cannot penetrate a membrane, it cannot diffuse from an area of higher concentration to an area of lower concentration.

A

True

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6
Q

Which organelle makes energy available to the cell?

A

Mitochondrion

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7
Q

What must substances pass through to enter or leave a cell?

A

Cell Mebrane

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8
Q

Which organelle breaks down food into particles that the cell can use for survival?

A

Mitochondrion

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9
Q

Which of the following structures serves as a boundary between the cell and the environment?

A

Cell Mebrane

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10
Q

Which cell structure contains the cell’s genetic materials and controls the cell’s activities?

A

Nucleus

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11
Q

The number of molecules of a substance in a given volume

A

Concentration

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12
Q

Diffusion

A

Movement of molecules from an area of high concentration to an area of low concentration until they are evenly distributed

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13
Q

Osmosis

A

The movement of water molecules across a membrane in response to concentration differences

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14
Q

Cell Membrane

A

Controls the flow of materials into and out of the cell

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15
Q

Chlorplast

A

Traps energy from the Sun to make glucose

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16
Q

During interphase, the elongated cell begins to pinch apart at the centre.

A

False

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17
Q

During anaphase, the new chromosomes are pulled apart and drawn to each end of the cell.

A

True

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18
Q

During metaphase, the chromosomes begin to uncoil.

A

False

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19
Q

The phases of mitosis occur in this order: prophase, anaphase, telophase, and metaphase.

A

False: Prophase, Metaphase, Anaphase, Telophase.

20
Q

The chromosomes align themselves in the middle of the cell during:

A

Metaphase

21
Q

The new chromosomes are pulled apart and drawn to each end of the cell during:

A

Anaphase

22
Q

In which phase of the cell cycle do cells spend most of their time?

A

Interphase

23
Q

During which stage of mitosis do the loosely arranged strands of chromosomes become coiled, shortened, and distinct?

A

Prophase

24
Q

All specialized cells are the result of cell differentiation.

A

False

25
Q

The following is the correct order of the hierarchy of organization for any organism:
tissue, cell, organ system, organism, organ

A

False: Cell, tissue, organ, organ system, organism.

26
Q

The human heart contains muscle cells, nerve cells, connective tissue, and epithelial tissue.

A

True

27
Q

A group of cells that performs similar functions is called an organ.

A

False

28
Q

The nervous system, circulatory system, and respiratory system all work together when you exercise.

A

True

29
Q

The four principal types of tissues are

A

Epithelial, connective, muscle, nervous.

30
Q

Which type of tissue allows for the movement of the skeleton or organs?

A

Muscle

31
Q

The major function of epithelial tissue is

A

To protect exposed surfaces

32
Q

The major function(s) of connective tissues are

A

1) To support blood vessels and nerves.
2) To cushion organs.
3) To connect organs

33
Q

The wall of the capillaries surrounding the alveolus is several layers thick.

A

False

34
Q

Carbon dioxide-rich blood is received from the body in the right atrium.

A

True

35
Q

Oxygen-poor blood moves into the left ventricle, which pumps it to the body cells.

A

False

36
Q

Arteries are thick-walled, elastic blood vessels.

A

True

37
Q

Which blood vessels are one cell thick?

A

Capillaries

38
Q

Arteries carry oxygen-rich blood from the heart to the

A

Capillaries

39
Q

The esophagus pushes the food into the stomach using wave-like muscular contractions called

A

Persitalis

40
Q

How many hours does it take from ingestion of food to elimination?

A

36 hours

41
Q

Involves sending electromagnetic radiation through the body

A

X-Ray

42
Q

Directs sound waves at specific body parts

A

Ultrasound

43
Q

Scan that involves small amounts of radioactive materials taken into the body

A

PET Scan

44
Q

Produces a 3-D image of body parts

A

CT Scan

45
Q

Involves passing radio waves through a magnetic field around the body

A

MRI Scan

Grade 10 - Science (3 decks)

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