Answer:
b permeated diffusion ...........
Answer:
Heredity, also called inheritance or biological inheritance, is the passing on of traits from parents to their offspring; either through asexual reproduction or sexual reproduction, the offspring cells or organisms acquire the genetic information of their parents
Explanation:
Below is a list of organelles that are commonly found in eukaryotic cells.
Organelle: Function
Nucleus: The “brains” of the cell, the nucleus directs cell activities and contains genetic material called chromosomes made of DNA.
Mitochondria: Make energy out of food
Ribosomes: Make protein
Golgi Apparatus: Make, process and package proteins
Lysosome: Contains digestive enzymes to help break food down
Endoplasmic Reticulum: Called the "intracellular highway" because it is for transporting all sorts of items around the cell.
Vacuole: Used for storage, vacuoles usually contain water or food. (Are you are thirsty? Perhaps your vacuoles need some water!)
Plant cells also have:
Chloroplasts: Use sunlight to create food by photosynthesis
Cell Wall: For support
Answer:
281474976710656
Explanation:
As each half hour passes, the colony of bacteria doubles. Initially, the numbers are fairly low, but the amounts become larger and larger as they compound.
Hour 0- 1
Hour 0.5- 2
Hour 1- 4
Hour 1.5- 8
Hour 2- 16
Hour 2.5- 32
By hour 10, the bacteria will have increased to 1048576. By hour 15, the number of bacteria will be 1073741824. By hour 24, the colony will contain 281474976710656 bacteria.
Answer:
These are the events occurring at synapse for the transmission of nerve impulse across the synapse from one neuron to another. The order of events is as follows: 4 - 1 - 5 - 3 - 2.
Explanation:
The correct order of events during the transmission of nerve impulse from one neuron to another is as follows:
4) Action potential reaches axon terminal of presynaptic neuron.
1) Ca2+ enters axon terminal.
5) Neurotransmitter released by exocytosis.
3) Neurotransmitter binds to postsynaptic receptor.
2) Ligand-gated ion channels open in postsynaptic membrane.
- The transmission across the synapse can be either electrical or chemical. Here is this case we are talking about chemical transmission.
- When the action potential reaches the axon terminal, the voltage gated calcium channels open and there is influx of calcium from the synapse.
- This causes the fusion of synaptic vesicles with the membrane and exocytosis of neurotransmitter.
- These neurotransmitters bind to the receptors on post synaptic membrane and cause opening or closing of voltage gated channels.
