Mitosis

Question 1

Mitosis

Answer 1

Mitosis

Question 2

DNA

Answer 2

double helix (backbone of ribose and phosphate group) and 4 types of nitrogenous bases (adenine, guanine, thymine, cytosine). The DNA is curled up as chromatin material inside the nucleus

Question 3

DNA Replication

Answer 3

Just before mitosis, when the DNA had been duplicated (replicated), each chromosome now consists of 2 chromatids held together by a centromere.

Question 4

Chromosome

Answer 4

Thread-like structures located inside the nucleus of animal and plant cells.

Question 5

Chromatid

Answer 5

one of two identical halves of a replicated chromosome

Question 6

Centromere

Answer 6

constricted region of a chromosome that separates it into a short arm and a long arm

Question 7

Adenine

Answer 7

One chemical strand in DNA. Connected to ATP.

Question 8

Thymine

Answer 8

One chemical strand in DNA. RNA replaces it with nucleobase uracil.

Question 9

Guanine

Answer 9

One chemical strand in DNA.

Question 10

Cytosine

Answer 10

One chemical strand in DNA. Co-factor to enzymes and help ADP go back to ATP.

Question 11

Prophase

Answer 11

first phase in the nuclear division of mitosis. The chromosomes become visible and the nuclear membrane disappears. The 2 centrosomes move to the poles and spindles form which attach to the centromeres of the chromosomes.

Question 12

Metaphase

Answer 12

the chromosomes are lined up at the center (equator) of the cell with spindles on the outside of the cell

Question 13

Anaphase

Answer 13

the spindles contract and pull one sister chromatid from each chromosome to a pole.

Question 14

Telophase

Answer 14

is the reverse of the prophase and the chromosomes become chromatin material again and the nuclear membrane (envelope) reforms.

Question 15

Cytokenesis

Answer 15

Split of cytoplasm