Biology

Question 1

The basic unit of life is the organelle.

Answer 1

False

Question 2

Only animal cells have cell walls.

Answer 2

False

Question 3

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

Answer 3

True

Question 4

Osmosis involves the diffusion of water through a permeable membrane.

Answer 4

False

Question 5

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

Answer 5

True

Question 6

Which organelle makes energy available to the cell?

Answer 6

Mitochondrion

Question 7

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

Answer 7

Cell Mebrane

Question 8

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

Answer 8

Mitochondrion

Question 9

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

Answer 9

Cell Mebrane

Question 10

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

Answer 10

Nucleus

Question 11

The number of molecules of a substance in a given volume

Answer 11

Concentration

Question 12

Diffusion

Answer 12

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

Question 13

Osmosis

Answer 13

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

Question 14

Cell Membrane

Answer 14

Controls the flow of materials into and out of the cell

Question 15

Chlorplast

Answer 15

Traps energy from the Sun to make glucose

Question 16

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

Answer 16

False

Question 17

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

Answer 17

True

Question 18

During metaphase, the chromosomes begin to uncoil.

Answer 18

False

Question 19

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

Answer 19

False: Prophase, Metaphase, Anaphase, Telophase.

Question 20

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

Answer 20

Metaphase

Question 21

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

Answer 21

Anaphase

Question 22

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

Answer 22

Interphase

Question 23

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

Answer 23

Prophase

Question 24

All specialized cells are the result of cell differentiation.

Answer 24

False

Question 25

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

Answer 25

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

Question 26

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

Answer 26

True

Question 27

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

Answer 27

False

Question 28

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

Answer 28

True

Question 29

The four principal types of tissues are

Answer 29

Epithelial, connective, muscle, nervous.

Question 30

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

Answer 30

Muscle

Question 31

The major function of epithelial tissue is

Answer 31

To protect exposed surfaces

Question 32

The major function(s) of connective tissues are

Answer 32

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

Question 33

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

Answer 33

False

Question 34

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

Answer 34

True

Question 35

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

Answer 35

False

Question 36

Arteries are thick-walled, elastic blood vessels.

Answer 36

True

Question 37

Which blood vessels are one cell thick?

Answer 37

Capillaries

Question 38

Arteries carry oxygen-rich blood from the heart to the

Answer 38

Capillaries

Question 39

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

Answer 39

Persitalis

Question 40

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

Answer 40

36 hours

Question 41

Involves sending electromagnetic radiation through the body

Answer 41

X-Ray

Question 42

Directs sound waves at specific body parts

Answer 42

Ultrasound

Question 43

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

Answer 43

PET Scan

Question 44

Produces a 3-D image of body parts

Answer 44

CT Scan

Question 45

Involves passing radio waves through a magnetic field around the body

Answer 45

MRI Scan