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 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 Deoxyribonucleicacid

Question 5

What does DNA look like inside the Nucleus?

Answer 5

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

Question 6

What is genetic material?

Answer 6

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

Question 7

How does DNA grow, develop, and reproduce?

Answer 7

DNA reproduces 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 wraps up tightly and neatly into a chromatid.

Question 11

What is a chromatid?

Answer 11

A DNA that is neatly wrapped 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 do humans have?

Answer 13

Humans have 46 chromosomes/ 23 pairs of chromosomes.

Question 14

How many chromosomes does each parent pass on their offspring?

Answer 14

23 chromosomes come from each parent.

Question 15

Each segment of a DNA is known as a what?

Answer 15

Gene.

Question 16

What does a gene contain?

Answer 16

Genetic traits.

Question 17

What happens during Mitosis?

Answer 17

During Mitosis, chromosomes go through 5 phases.

Question 18

What are the 5 phases of mitosis?

Answer 18

Phase 1 is Prophase, Phase 2 is Metaphase, Phase 3 is Anaphase, Phase 4 is Telophase, Phase 5 is Cytokinesis.

Question 19

What happens during phase 1?

Answer 19

Phase 1: Prophase- chromosomes appear.

Question 20

What happens during phase 2?

Answer 20

Phase 2: Metaphase-chromosomes line up.

Question 21

What happens during phase 3?

Answer 21

Phase 3: Anaphase-chromosomes separate.

Question 22

What happens during phase 4?

Answer 22

Phase 4: Telophase-chromosomes pinch.

Question 23

What happens during phase 5?

Answer 23

Phase 5: Cytokinesis- two new daughter cells form.

Question 24

How many chromosomes do humans sex cells have?

Answer 24

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

Question 25

How many chromosomes does human body cells have?

Answer 25

46 chromosomes in each cell.

Question 26

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

Answer 26

A Diploid cell.

Question 27

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

Answer 27

A Haploid cell

Question 28

Do bacteria cells go through Mitosis like the eukaryotic cells?

Answer 28

No, bacteria do not have a nucleus.

Question 29

How do bacteria cells divide?

Answer 29

Bacteria cells split in half called Binary Fission.

Question 30

Why do our body cells divide?

Answer 30

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

Question 31

What is the name of the DNA backbone called?

Answer 31

Sugar phosphate.

Question 32

Name all 4 of the DNA bases.

Answer 32

Guanine, Cytosine, Thymine, and Adenine

Question 33

What DNA base pairs with Thymine, and Guanine?

Answer 33

Guanine and Cytosine and Thymine and Adenine.