Cell Stuff

Question 1

Cell cycle

Answer 1

The series of events that occur in eukaryotic cells from cell formation through the end of cell division

Question 2

Interphase

Answer 2

Longest phase of the cell cycle. A cell spends > 90% of its time in interphase

Question 3

G1

Answer 3

(Growth 1) First stage of interphase. Cell doubles in size and produces all structures needed for cellular division

Question 4

S

Answer 4

Second stage of interphase. Cell replicates its DNA such that it makes an exact copy of genetic material

Question 5

G2

Answer 5

Third (final) stage of interphase. Cell prepares for cellular division by producing all the final necessary structures

Question 6

Prophase

Answer 6

First stage of mitosis. Nucleolus of nuclear membrane dissapears. Centrioles form spindle fiber apparatus.

Question 7

Metaphase

Answer 7

Second stage of mitosis. Homologous pairs line up at metaphase plate.

Question 8

Anaphase

Answer 8

Third stage of mitosis. Spindle fibers attached at the Kinetochores and pull sister chromatids toward opposite poles

Question 9

Telophase

Answer 9

Fourth (final) stage of mitosis. Chromosomes arrive at poles and begin to decondense. Nuclear membrane+nucleus return

Question 10

Cytokinesis

Answer 10

Final stage of the cell cycle. Cytoplasm and organelles divide evenly. Animals form cleaveage furrow. Plants form cell plate

Question 11

Chromatin

Answer 11

Thread-like form of DNA present from end of telophase until replication during synthesis of interphase

Question 12

Chromatid

Answer 12

One half of a homologous pair of chromosomes

Question 13

Sister chromatids

Answer 13

Each half is a sister chromatid to the other. They are genetically identical