Btec applied science biology unit learning
aim a Unit : investigative project Learning
Aim A: undertake a literature search and
review to produce an investigative project
proposal.
Describe the function of the nucleolus - CORRECT
ANSWER>>Produces ribosomes and RNA
Describe the function of the cell wall - CORRECT
ANSWER>>Provides rigidity and protection to the cell
Describe the function of the chloroplasts - CORRECT ANSWER>>Site
of photosynthesis as they contain chlorophyll
Describe the function of the plasmodesmata - CORRECT
ANSWER>>A channel through the cell wall the allows transport of
materials from one cell to another
Describe the function of the amyoplasts - CORRECT
ANSWER>>Stores starch and converts starch back into glucose when
the plant needs energy
Describe the function of the vacuole - CORRECT ANSWER>>Stores
water and chemicals for cell use. Also maintains turgor of cell
Describe the function of the tonoplasts - CORRECT
ANSWER>>Membrane the surrounds the vacuole. Protects the
,vacuole, isolates it from harmful substances and controls water flow in
and out of the vacuole
Why are gram positive bacteria more susceptible to antibiotics? -
CORRECT ANSWER>>Permeable cell wall whereas gram negative
bacteria has a semi-permeable cell wall
Describe the adaptations found in a palisade cell - CORRECT
ANSWER>>Closely packed together
Chloroplasts
Large vacuole
Explain why the palisade cell has a large amount of chloroplasts -
CORRECT ANSWER>>To absorb lots of light for photosynthesis
Explain why palisade cells are closely packed together - CORRECT
ANSWER>>To form a continuous layer in the leaf
Explain why palisade cells have a large vacuole - CORRECT
ANSWER>>To maintain turgor (pushes against the cell wall to
maintain rigid shape)
Describe the adaptations of a root hair cell - CORRECT
ANSWER>>Root hair shape
Large vacuole
Thin cellulose walls
, Explain why root hair cells have an elongated section known as the
root hair - CORRECT ANSWER>>Increased surface area for
maximum movement of water into the cell
Explain why root hair cells have a large vacuole - CORRECT
ANSWER>>Contains cell sap with low water potential to encourage
water into the cell
Explain why root hair cells have thin cellulose walls - CORRECT
ANSWER>>Encourage movement of water and minerals into the cell.
Short distance for osmosis and diffusion
Describe the adaptations of a sperm cell - CORRECT
ANSWER>>Lots of mitochondria
Shaped head containing acrosome (with enzymes)
Haploid nucleus
Tail for movement
Explain why a sperm cell has an undulipodium (tail) - CORRECT
ANSWER>>To allow the sperm to move to the egg
Explain why sperm cells contain large numbers of mitochondria -
CORRECT ANSWER>>To produce the large amounts of energy
needed for movement
Explain why sperm cells have a shaped head - CORRECT
ANSWER>>To push through the protective layer of the egg cell
aim a Unit : investigative project Learning
Aim A: undertake a literature search and
review to produce an investigative project
proposal.
Describe the function of the nucleolus - CORRECT
ANSWER>>Produces ribosomes and RNA
Describe the function of the cell wall - CORRECT
ANSWER>>Provides rigidity and protection to the cell
Describe the function of the chloroplasts - CORRECT ANSWER>>Site
of photosynthesis as they contain chlorophyll
Describe the function of the plasmodesmata - CORRECT
ANSWER>>A channel through the cell wall the allows transport of
materials from one cell to another
Describe the function of the amyoplasts - CORRECT
ANSWER>>Stores starch and converts starch back into glucose when
the plant needs energy
Describe the function of the vacuole - CORRECT ANSWER>>Stores
water and chemicals for cell use. Also maintains turgor of cell
Describe the function of the tonoplasts - CORRECT
ANSWER>>Membrane the surrounds the vacuole. Protects the
,vacuole, isolates it from harmful substances and controls water flow in
and out of the vacuole
Why are gram positive bacteria more susceptible to antibiotics? -
CORRECT ANSWER>>Permeable cell wall whereas gram negative
bacteria has a semi-permeable cell wall
Describe the adaptations found in a palisade cell - CORRECT
ANSWER>>Closely packed together
Chloroplasts
Large vacuole
Explain why the palisade cell has a large amount of chloroplasts -
CORRECT ANSWER>>To absorb lots of light for photosynthesis
Explain why palisade cells are closely packed together - CORRECT
ANSWER>>To form a continuous layer in the leaf
Explain why palisade cells have a large vacuole - CORRECT
ANSWER>>To maintain turgor (pushes against the cell wall to
maintain rigid shape)
Describe the adaptations of a root hair cell - CORRECT
ANSWER>>Root hair shape
Large vacuole
Thin cellulose walls
, Explain why root hair cells have an elongated section known as the
root hair - CORRECT ANSWER>>Increased surface area for
maximum movement of water into the cell
Explain why root hair cells have a large vacuole - CORRECT
ANSWER>>Contains cell sap with low water potential to encourage
water into the cell
Explain why root hair cells have thin cellulose walls - CORRECT
ANSWER>>Encourage movement of water and minerals into the cell.
Short distance for osmosis and diffusion
Describe the adaptations of a sperm cell - CORRECT
ANSWER>>Lots of mitochondria
Shaped head containing acrosome (with enzymes)
Haploid nucleus
Tail for movement
Explain why a sperm cell has an undulipodium (tail) - CORRECT
ANSWER>>To allow the sperm to move to the egg
Explain why sperm cells contain large numbers of mitochondria -
CORRECT ANSWER>>To produce the large amounts of energy
needed for movement
Explain why sperm cells have a shaped head - CORRECT
ANSWER>>To push through the protective layer of the egg cell
