Cell division (chapter 6)

Question 0

The 2 stages is cell division are what?

Answer 0

Mitosis & Cytokinesis

Question 1

Before a cell divides, it makes a copy of its genes during what phase?

Answer 1

Interphase

Question 2

When all the genes of a chromosome have duplicated but are still attached, the structures that are formed are called what?

Answer 2

Sister chromatids

Question 3

In mitosis the chromosomes are lined up at the center of the spindle during ____________?

Answer 3

Metaphase

Question 4

Asexual reproduction is reproduction by ___________.

Answer 4

Mitosis cell divisions

Question 5

A cell surrounded by a protective covering is a ____________?

Answer 5

Spore

Question 6

By what process does sexual reproduction copy genetic information?

Answer 6

Meiosis

Question 7

The new cell that forms the Union of two gametes is called ___________?

Answer 7

A zygote

Question 8

A cell or an organism that had two of each kind of its chromosome is __________________?

Answer 8

Diploid

Question 9

Which of the following does NOT belong with the other 3? Why?
Phosphate, sugar, base, protein

Answer 9

Protein because the other 3 are parts of a nucleotide

Question 10

Which of the following is NOT one of the four bases in a DNA molecule?
Adenine, guanine, uracil, cytosine

Answer 10

Uracil

Question 11

Genes are sections of _____________?

Answer 11

DNA

Question 12

Which of the following never contains the code for the sequence of amino acids needed to manufacture a protein?

Answer 12

tRNA

Question 13

What carries the genetic code from the DNA to the ribosomes?

Answer 13

Messenger RNA

Question 14

T/F: cytokinesis is the division of a cells cytoplasm and organelles.

Answer 14

T

Question 15

T/F: during cell division it is important that each new cell get exactly the same amount of cytoplasm and the same number of organelles.

Answer 15

F

Question 16

T/F: the cells of human skin may go through mitotic cell division several times a day.

Answer 16

T

Question 17

T/F: regeneration takes place through the process of cell division.

Answer 17

T

Question 18

T/F: an organism can reproduce sexually or asexually but not both.

Answer 18

F

Question 19

T/F: Watson and Crick worked out a model of DNA.

Answer 19

T

Question 20

T/F: in the DNA molecule, adenine always pairs with thymine.

Answer 20

T

Question 21

T/F: RNA is a double-sided chain that looks something like a twisted ladder.

Answer 21

F

Question 22

In the RNA molecule, uracil always pairs with cytosine.

Answer 22

F

Question 23

T/F: protein synthesis occurs at ribosomes.

Answer 23

T

Question 24

List the 4 phases of mitosis in the order they occur:

Answer 24

Prophase, metaphase, anaphase, telophase

Question 25

What do oncologists research?

Answer 25

Cancer

Question 26

How many cells are present at meiosis?

Answer 26

4

Question 27

A group of three nucleotides

Answer 27

Condon

Question 28

The basic unit of DNA & RNA, consisting of a sugar, a phosphate, and a vase:

Answer 28

Nucleotide

Question 29

The process of forming two DNA molecules from one:

Answer 29

Replication

Question 30

The process of forming mRNA from DNA:

Answer 30

Transcription

Question 31

The process of putting amino acids together in a specific sequence:

Answer 31

Protein synthesis

Question 32

List 2 types of molecules. Which one carries the DNA code?

Answer 32

tRNA & mRNA

mRNA

Question 33

Thymine, cytosine, adenine, uracil & guanine are the bases in both DNA & RNA. Which one is ONLY in RNA?

Answer 33

Uracil

Question 34

What is a gene?

Answer 34

A specific segment of DNA - contains blueprints

Question 35

In what phase of mitosis dose each X shaped chromosome separate into L shaped chromosomes

Answer 35

Anaphase

Question 36

Please label the mitosis worksheet

Answer 36

Yes Mother… I love you so much!