Page 3 - Chapter 14 Reproduction
P. 3
1 4 9 ►Observation of budding in yeast from
* r prepared slides ______
Date.
Yeasts are unicellular fungi, found on the surface of I
fruits, in soil, water and even on dust in the air. Yeasts '•ISBWIlHMftl
reproduce asexually by budding in which a bud
develops as a small outgrowth on parent's body. The *
nucleus of the cell divides in two by mitosis. One
daughter nucleus passes into bud. The bud grows Budding occurs at
steadily bigger and bigger until it is about the same predetermined
size as the “parent” cell. The bud containing the new spots on cell wall.
nucleus and other organelles then pinches off at the Parent cell may from
base, and breaks away to form a new cell similar to more than one bud
its parent cell. The buds may break off and live at a time.
independently or it may remain attached forming a
colony.
TS&. S t t ?' -.. One daughter
nucleus
jk $ r. ••
passed into bud
Parent ''-‘1
yeast •
A bud •
is formed
Nucleus Another bud
divides is formed
Fig 14.2: Budding in Yeast
Prepared slides showing budding in yeast, microscope A C A U T IO N S
1NL
1. Observe the prepared slide of budding in yeast Handle the
under low and high powers of microscope. microscope
carefully.
2. Locate the different stages of budding in yeast. Clean the lens
before use.
* r prepared slides ______
Date.
Yeasts are unicellular fungi, found on the surface of I
fruits, in soil, water and even on dust in the air. Yeasts '•ISBWIlHMftl
reproduce asexually by budding in which a bud
develops as a small outgrowth on parent's body. The *
nucleus of the cell divides in two by mitosis. One
daughter nucleus passes into bud. The bud grows Budding occurs at
steadily bigger and bigger until it is about the same predetermined
size as the “parent” cell. The bud containing the new spots on cell wall.
nucleus and other organelles then pinches off at the Parent cell may from
base, and breaks away to form a new cell similar to more than one bud
its parent cell. The buds may break off and live at a time.
independently or it may remain attached forming a
colony.
TS&. S t t ?' -.. One daughter
nucleus
jk $ r. ••
passed into bud
Parent ''-‘1
yeast •
A bud •
is formed
Nucleus Another bud
divides is formed
Fig 14.2: Budding in Yeast
Prepared slides showing budding in yeast, microscope A C A U T IO N S
1NL
1. Observe the prepared slide of budding in yeast Handle the
under low and high powers of microscope. microscope
carefully.
2. Locate the different stages of budding in yeast. Clean the lens
before use.
