Chapter 5 Asexual Reproduction Flashcards Preview

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Flashcards in Chapter 5 Asexual Reproduction Deck (30):
1

Animals & their skin

Shedding skin:
-Snakes

Need help to get rid of their skin:
-Amphibian B.taitanus
-The babies chew off the mother's skin as lunch
-Found in Kenya, Africa

2

B.titanus: Types of teeth

-Spoon shaped for scraping
-Spiked points for piercing
-Grappling hook designed so it can stay attached to mother

3

Do cells divide at the same rate?

No. They divide on different rates, and the rate depends on the function. Skin cells endure a lot of wear and tear, so they divide really fast

4

What cell divides the fastest? What cell divides the slowest

-

5

How are stains on your hands cleaned?

-Sometimes not by soap and water, but skin sheds instead

6

What controls checkpoints?

Genes
Proteins????

7

Rate of red blood cells' division

Every 120 days

8

Skin cells' division rate

Every 20 days

9

Brain cells

Every 30-50 years

10

Stomach lining cells' division rate

Every 2 days

11

Intestinal lining cells' division rate

Every 3 days

12

Liver cells' division rate

Every 200 days

13

When does your body growth slows?

After puberty

14

As an adult, what types of cells continue dividing and what doesn't?

-Intestinal cells and stomach cells; cells that takes a lot of wear and tear
-Muscle cell and nerve cell usually doesn't continue to divide

15

Why won't muscle cells and nerve cells continue to divide when you are an adult?

Needs to be searched up

16

Where does most of the dust in our house came from?

70% of it comes from dead human skin cells

17

Brain damage is when...?

-Pathway get damaged, new pathways?????
-research

18

Cells make up ~, ~ makes up ~, ~ are part of ~?

Tissues, organs, and body systems

19

Do organs have only one type of tissue?

No, they can have 2+ tissues

-need example!!!!

20

Cell cycle

Interphase, mitosis, and cytokinesis are the three stages of cell cycle

21

Interphase: short summary

-The longest stage where cells are carrying out its daily functions
-Prepares for reproduction by doubling the material

22

Mitosis: short summary

-Usually the shortest
-Divides the duplicated contents of cell's nucleus into two equal parts(2 daughter cells identical n equal to parent cell)

23

Cytokinesis: short summary

-Separates the two nuclei and cell contents into two daughter cells

24

Interphase: Growth and preparation

-Increases in size n makes the proteins necessary for the cell to function
-Some organelles began to duplicate

25

Interphase: DNA Replication: summary

-Temporarily has two complete sets of DNA
-Controlled by enzymes
-Can involve up to 3X10^9 base pairs of DNA

26

Interphase: DNA replication: Process

-Enzymes uncoil the double helix DNA(becomes straight)
-New bases combine with each strand of DNA
-2 identical DNA are made

27

Interphase: Continued growth and preparation:

-After DNA replicates, cell continues to grow and makes materials(ex.protein) for the new cells
-Chromatin contains loosely coiled DNA so it can be copied into mRNA so proteins can continue to be made
-Organelles such as mitochondria and chloroplasts will be duplicated at this stage

28

What does the chromosomes look like as the nucleus prepares to divide?

Visible as X

29

Sister chromatids

-Strands of identical duplicated DNA joined together to form half of the chromosome

30

Centromere

-Center part of X
-Holds the sister chromatids together