Other slides in this set

Slide 2

Preview of page 2

Here's a taster:

Cells make up all living organisms, some
contain many, some are only one cell
large, but all cells need to reproduce
· As cells contain an organism's genetic
material (DNA), this must first be
replicated.…read more

Slide 3

Preview of page 3

Here's a taster:

DNA replication
· DNA replications takes place via semi-
conservative replication ­ so half of what was
there originally is in each part afterwards.
A TA T A T
· Here is a section of DNA.
G
G
C
C
· An enzyme called "DNA helicase" causes the
G
C
A T
two strands to split. A TA T A T
C
G
· Free nucleotides which float around naturally T
A
AT A T A
near the DNA bond with their corresponding T
G
G
C
C
G
C
T
bases, forming two identical double sections A
G
G
C
C
G
G
C
of DNA. Here, a red backbone shows an
C
G
original strand, and blue shows a new strand.
C
A
G
T
G
C
C…read more

Slide 4

Preview of page 4

Here's a taster:

Mitosis
· One way in which cells replicate is mitosis, where 2
identical cells are produced.
· There are 5 stages to mitosis:
-Interphase
-Prophase
-Metaphase
-Anaphase
-Telophase
You might want to come up with something to help you
remember the order... such as "I Poo More After Tea" or
"Irish People May Appear Taller"... whatever works for
you.…read more

Slide 5

Preview of page 5

Here's a taster:

Interphase
· During interphase, the cell is not dividing.
· However, it may be preparing for division,
by replicating DNA and organelles.
Look, a cell!…read more

Slide 6

Preview of page 6

Here's a taster:

Prophase
· During prophase:
· Chromosomes become visible
· The nuclear envelope disappears…read more

Slide 7

Preview of page 7
Preview of page 7

Slide 8

Preview of page 8
Preview of page 8

Slide 9

Preview of page 9
Preview of page 9

Slide 10

Preview of page 10
Preview of page 10

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all resources »