For the impulse of transfer from presynaptic to post-presynaptic neuron,the substance required isA) Sodium B) PotassiumC) Proteins D) Calcium2- Study of form and structures of living organismA) Skeletology B) MicrobiologyC) Morphology D) Biochemistry3- A __________ is defined as a group of organisms capable ofinterbreeding and producing fertile offspringA) population B) SpeciesC) Prokaryotes D) Community4- A Family is a group of relatedA) Genera B) OrderC) Species D) Phylum5- Pores in the cell walls of adjacent cells, through which their cytoplasm isconnectedA) Peptidoglycan B) ProtoplasmC) Plasmodesmata D) Chitin
Question
For the impulse of transfer from presynaptic to post-presynaptic neuron,the substance required isA) Sodium B) PotassiumC) Proteins D) Calcium2- Study of form and structures of living organismA) Skeletology B) MicrobiologyC) Morphology D) Biochemistry3- A __________ is defined as a group of organisms capable ofinterbreeding and producing fertile offspringA) population B) SpeciesC) Prokaryotes D) Community4- A Family is a group of relatedA) Genera B) OrderC) Species D) Phylum5- Pores in the cell walls of adjacent cells, through which their cytoplasm isconnectedA) Peptidoglycan B) ProtoplasmC) Plasmodesmata D) Chitin
Solution
1- For the impulse of transfer from presynaptic to post-synaptic neuron, the substance required is D) Calcium. This is because calcium ions trigger the release of neurotransmitters from the presynaptic neuron into the synaptic cleft.
2- Study of form and structures of living organism is C) Morphology. Morphology is the biological discipline that deals with the form of living organisms, and with relationships between their structures.
3- A B) Species is defined as a group of organisms capable of interbreeding and producing fertile offspring. This is the biological definition of a species.
4- A Family is a group of related A) Genera. In biological taxonomy, a family is ranked above genus and below order.
5- Pores in the cell walls of adjacent cells, through which their cytoplasm is connected are C) Plasmodesmata. Plasmodesmata are small tubes that connect plant cells to each other, providing a pathway for molecules and signals to move from one cell to another.
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