Reproduction The cells of all organisms contain a molecule called deoxyribonucleic acid (DNA)....
-
Upload
alexandra-schneider -
Category
Documents
-
view
216 -
download
2
Transcript of Reproduction The cells of all organisms contain a molecule called deoxyribonucleic acid (DNA)....
Reproduction
The cells of all organisms contain a molecule
called deoxyribonucleic acid (DNA). controls all cell activities. holds all the genetic information to carry on all life
activities. is passed on to offspring when organisms
reproduce.
(offspring is a new organism produced by
one or more parents)
Organisms make other organisms
like themselves through the process
of reproduction.
Two Main Types: Asexual Reproduction Sexual Reproduction
when a single parent produces offspring that are the same as the parent
Microorganisms are single-celled organisms that
reproduce through asexual reproduction
Asexual Reproduction
Euglena Single-celled organisms
Asexual reproduction
Flagella (whip like
thread that propel the
euglena through water)
Amoeba Single-celled organisms
Asexual reproduction
Pseudopodia “false feet”
are extensions of
the amoeba’s body,
used for movement and
eating.
Paramecium Single-celled organisms
Asexual reproduction
Cilia (hair like structures
that beat back and forth
to move it forward)
Bacteria
round shape
Staphylococcus aureus
(skin infection)
rod shape
Salmonella
(food poisoning)
Single-celled organisms
Asexual reproduction
spiral shape
Lyme disease
(tick bites)
Three Types
Is when two parents produce offspring that share characteristics of both parents.
Most multi-cellular organisms reproduce through sexual reproduction.
Sexual Reproduction
Sperm Cell – male gamete
Egg Cell – female gamete (the largest
cell in the human body).
One parent Offspring identical to
parent Many offspring Takes place in single-
celled organisms Example: Paramecium
Asexual Reproduction vsSexual Reproduction
Two parents Offspring have
characteristics of both parents (diverse-different)
Few offspring Takes place in multi-
celled organisms Example: Cats