Asexual Reproduction Unit Test

Question 1

Why is cell division important

Answer 1

It is essential for growth, reproduction, and repair

Question 2

3 characteristics of Asexual Reproduction

Answer 2

Multiple offspring, genetic clones, Single parent

Question 3

4 Advantages of Asexual Reproduction

Answer 3

Many offspring Fast,
Energy not used to find Mate,
large populations form to beat other organisms,
Large number of organisms can survive changes to the environment

Question 4

3 Disadvantages of Asexual Reproduction

Answer 4

Offspring are clones and can inherit negative mutations,
Hostile environments can wipe out entire populations
Some methods produce organisms close together causing them to fight for nutrients.

Question 5

What is Cancer?

Answer 5

Diseases caused from uncontrolled/abnormal cell division.

Question 6

How does Cancer occur?

Answer 6

checkpoint proteins do not function properly in cancer cells allowing the cancer cells to divide uncontrollably and spread into surrounding tissues.

Question 7

What happens during Interphase?

Answer 7

Growth and preparation: Cells increase in size, proteins needed for cell function are made some organelles start to duplicate,
Replication: DNA is copied,
Continued growth and preparation: Cells keep growing, proteins are made for daughter cells, Rest of organelles are duplicated

Question 8

What happens during Mitosis

Answer 8

Duplicated DNA is split up into two equal parts,

Question 9

What happens during Early Prophase (Mitosis)

Answer 9

Early Prophase: Duplicated chromosomes coil up into x shaped chromosomes, nucleolus disappears, nuclear membrane breaks down, centrioles begin to separate and spindle fibers form

Question 10

What happens during Metaphase (Mitosis)

Answer 10

Chromosomes line up in the middle of the cell, along the spindle fibers.

Question 11

What happens during Anaphase (Mitosis)

Answer 11

Chromatids split and move to opposite sides of the cell

Question 12

What happens during Telophase (Mitosis)

Answer 12

Spindle fibers disappear, nuclear membrane form around each set of chromosomes, nucleolus appears within each nucleus, cells start to pinch into two and is ready to divide.

Question 13

What are all 5 methods of Asexual Reproduction?

Answer 13

1) Binary Fission 2) Fragmentation 3) Budding 4) Spore Formation 5) Vegetative Reproduction

Question 14

Binary Fission (Examples & Defenition)

Answer 14

Binary Fission is when an organism splits into two equal cells! Examples - Amoeba & Euglena

Question 15

Fragmentation (Examples & Defenition)

Answer 15

Fragmentation is when an organism breaks into multiple pieces by injury! Examples - Sea Star & Flat Worm

Question 16

Budding (Examples & Defenition)

Answer 16

Budding is when an organism grows from a bud that has broken off of a previous organism! Examples - Jellyfish & Yeast

Question 17

Spore Formation (Examples & Defenition)

Answer 17

Spore Formation is when unicellular spores are created, they get carried by the wind and grow where they land on the ground! Examples - Algae & Mosses

Question 18

Vegetative Reproduction (Examples & Defenition)

Answer 18

Vegetative Reproduction is when certain cells in the stem/root of a plant divide to make a new part! Examples - Potatoes & Strawberries

Question 19

What happens during Cytokinesis

Answer 19

New cells identical to parent cell, in Animal cells cell membrane pinches together dividing the cytoplasm and organelles, In plant cells a cell plate forms in the center of the cell and divides the cell into two.

Question 20

What happens during late prophase (mitosis)

Answer 20

Spindle fibres completely formed chromosomes attach to spindle fibres,
Nuclear membrane disappears

Question 21

What is the role of checkpoint proteins and how are they important?

Answer 21

Checkpoint proteins are used to check if the cell is functioning properly. If not the cell can be repaired or destroyed (apoptosis).