Describe cell growth and replication during the first stage of interphase.

Question 1

Describe cell growth and replication during the first stage of interphase.

Answer 1

Rapid growth and replication of the organelles

Question 2

What happens during the mitotic phase?

Answer 2

Division of nucleus and cytoplasm

Question 3

What is a unicellular organism capable of doing? Give examples.

Answer 3

Carrying out all life functions (respond to stimuli, grow, reproduce)

Question 4

Describe a unicellular prokaryotic organism.

Answer 4

One cell, no nucleus, can carry out all life function

Question 5

What are plant stem cells called?

Answer 5

meristems

Question 6

In which period of growth does a cell spend most of its life?

Answer 6

interphase

Question 7

How long does it take for most dividing human cells to complete a cell cycle?

Answer 7

24 hours

Question 8

During which stage of interphase do cells store energy for use in the mitotic state?

Answer 8

G2

Question 9

Identify the two stages of the mitotic phase.

Answer 9

Mitosis and cytokinesis

Question 10

If a cell has 20 duplicated chromosomes, how many chromatids does it have?

Answer 10

40

Question 11

If a cell has 20 duplicated chromosomes, how many chromatids does it have?

Answer 11

40

Question 12

If a cell has 10 chromatids, how many duplicated chromosomes does it have?

Answer 12

5

Question 13

What is the shortest stage of mitosis?

Answer 13

metaphase

Question 14

What happens during prophase?

Answer 14

Copied DNA condenses into chromosomes, the nucleolus disappears, and spindle fibers begin to form

Question 15

Which type of cell divides by the cell pinching together until two cells split apart?

Answer 15

animal cells

Question 16

What are the results of cell division?

Answer 16

Reproduction, growth, replacement, repair and two new daughter cells form

Question 17

What is the process called by which cells coming from the same cell become different types of cells?

Answer 17

Cell differentiation

Question 18

How many cells do large animals have?

Answer 18

billions

Question 19

What are groups of cells called?

Answer 19

tissues

Question 20

What are the three types of tissue found in plants?

Answer 20

dermal, vascular, and ground

Question 21

What does muscle tissue do?

Answer 21

it causes movement

Question 22

What purpose does connective tissue serve in a multicellular organism?

Answer 22

It provides structure and support and often connects other types of tissue together

Question 23

What are the levels of organization from smallest to largest in order?

Answer 23

Cells, tissues, organs, organ systems, organisms

Question 24

What kind of tissue causes movement in most animals?

Answer 24

muscle

Question 25

During which phase is DNA copied?

Answer 25

the S stage of interphase

Question 26

Define mitosis

Answer 26

the nucleus and its contents divide

Question 27

A duplicated chromosome is two sister chromatids joined by a ________.

Answer 27

centromere

Question 28

What is the job of a contractile vacuole in an amoeba?

Answer 28

Collects and pumps excess water out of the cell

Question 29

define organ

Answer 29

Groups of different tissues working together to perform a particular job

Question 30

Prophase

Answer 30

copied DNA condenses into chromosomes

Question 31

Metapahse

Answer 31

chromosomes line up in a single file at the middle of the cell

Question 32

Anaphase

Answer 32

sister chromatids separate, spindle fibers begin to shorten and pull chromatids toward opposite sides of the cell

Question 33

Telophase

Answer 33

nuclear membrane forms around the chromatid and chromosomes begin to unwind

Question 34

S.A.-How is the cytoplasm divided between the two cells that result from mitosis in plant cells? In animal cells?

Answer 34

A new cell wall forms in the middle of a plant cell. Cell membrane contracts or squeezes around the middle of an animal cell.

Question 35

S.A.-How is the stage of interphase different than the G₁ and G₂ stages?

Answer 35

It is different because chromosomes are replicated.

Question 36

S.A.-Name the four results of cell division.

Answer 36

The 4 results are reproduction, growth, replacement, and repair.

Question 37

S.A.-At State College, all of the students enroll in the same basic education courses the first two years. Then during the final two years, they are able to specialize into many different areas of study. At the end of the first two years, what type of animal cells are the students most like?

Answer 37

They are most like stem cells.

Question 38

S.A.-Classify the stem of a flower by organ system.

Answer 38

shoot system

Question 39

Essay-Name the three primary types of plant tissue. Explain the function of each.

Answer 39

The three primary types of plant tissues are dermal, vascular, and ground. Dermal provides protection and helps reduce water loss. Vascular transports water and nutrients from one part of a plant to another. Ground provides storage and support and is where photosynthesis takes place.