April 2024 Biology Unified Mock Flashcards
1
Q
What type of cell wafts mucus secreted by golbet cells?
A
Ciliated epithelial cell
2
Q
Why are reflexes involuntary?
A
Because the reflex arc does not pass through the cerebrum.
3
Q
Why are reflexes fast?
A
Because they only pass through three neurones.
4
Q
What is species richness?
A
(Species richness is) The number of different species in an area/community/ecosystem
5
Q
What is species evenness?
A
(species evenness is) The relative abundance of individuals in each species in an area/community/ecosystem
6
Q
What is DNA Polymerase?
A
DNA Polymerase catalyses the formation of phosphodiester bonds between nucleotides in the DNA strand.
7
Q
What is the breakdown of amino acids to ammonia called?
A
ammonification
8
Q
State the functions of the cytoskeleton.
A
- Movement of cells
- Strengthening cells
- Movement of organelles
- Holds organelles in place
•••••••••••• - Forms spindle fibres in mitosis/meiosis
- Movement of chromatids/chromosomes
- Cleavage in cells / cytokinesis
