Cell Division

Question 1

What is the smallest unit of life?

Answer 1

Cell

Question 2

What is the biggest organelle of a eukaryotic cell?

Answer 2

Nucleus

Question 3

What is found in the nucleus?

Answer 3

DNA

Question 4

What is DNA and what does it stand for?

Answer 4

DNA contains genetic material and it stands for DEOXY RIBO NUCLEIC ACID.

Question 5

What does DNA look like inside a nucleus?

Answer 5

DNA looks like a double stranded of ladder and jumble up like a ball of yarn.

Question 6

What is genetic material?

Answer 6

Genetic material are genes or traits that can be passes on from parents to offspring.

Question 7

How does DNA grow and develop and reproduce?

Answer 7

DNA reproduce through stages called INTERPHASE AND MITOSIS.

Question 8

What happens during INTERPHASE?

Answer 8

INTERPHASE is when DNA develops and goes through replication.

Question 9

What does REPLICATION mean?

Answer 9

Copy or duplicate.

Question 10

What happens during REPLICATION?

Answer 10

DNA replicates itself and wrap tightly and neatly into chromatid.

Question 11

What is a chromatid?

Answer 11

A DNA that is neatly wrap up (TWO CHROMATIN/singular:chromatids)

Question 12

What is a CHROMOSOME?

Answer 12

When DNA wraps around a protein, it is called a CHROMOSOME.

Question 13

How many chromosomes does each parent pass on to their offspring?

Answer 13

23 chromosomes from each parent.

Question 13

How many chromosomes do humans have?

Answer 13

Humans have 46 chromosomes.

Question 14

Each segment of DNA is known as a what?

Answer 14

Gene.

Question 15

What does a gene contain?

Answer 15

Genetic traits.

Question 16

What happens during MITOSIS?

Answer 16

During mitosis chromosomes go through 5 phases.

Question 17

What are the 5 phases of mitosis?

Answer 17

Ph 1: PROPHASE: Ph 2: METAPHASE; Ph 3: ANAPHASE; Ph 4: TELOPHASE; Ph 5: CYTOKINESIS.

Question 17

What happens during each phase? (Prophase)

Answer 17

Phase 1: Prophase - chromosomes appear

Question 18

What happens during each phase? (Metaphase)

Answer 18

Phase 2: Metaphase - chromosomes line up.

Question 19

What happens during each phase? (Anaphase)

Answer 19

Phase 3: Anaphase - chromosomes separate.

Question 20

What happens during each phase? (Telophase)

Answer 20

Phase 4: Teleophase - chromosomes pinch.

Question 21

What happens during each phase? (Cytokinesis)

Answer 21

Phase 5: Cytokinesis - two new daughter cells form.

Question 22

How many chromosomes do humans sex cells have?

Answer 22

23 chromosomes in each sex cell (egg or sperm).

Question 23

How many chromosomes do humans body cells have?

Answer 23

46 chromosomes in each cell.

Question 24

What do you call a cell with a HALF set of chromosomes (23)?

Answer 24

A HAPLOID cell.

Question 24

What do you call a cell with a full set of chromosomes (46)?

Answer 24

A DIPLOID cell.

Question 25

Do bacteria cells go through mitosis like eukaryotic cells?

Answer 25

No, bacteria do not have a nucleus.

Question 26

How do bacteria cells divide?

Answer 26

Bacteria cells split in half called BINARY FISSION.

Question 27

Why do our body cells divide?

Answer 27

Our body cells divide to replace dead cells, to grow, and to develop.

Question 28

What is the name of the DNA Backbone called?

Answer 28

Sugar phosphate.

Question 29

Name all 4 of the DNA bases.

Answer 29

Guanine; Cytosine; Thymine; Adenine.

Question 30

What DNA base pairs with Thymine? And Guanine?

Answer 30

Guanine=Cytosine Thymine= Adenine.