Given the answers;
a) Reptiles
b) Cactus plants
c) Small birds
d) Crabs and crayfish
The answer is C. Small birds.
On his visit to the Galapagos Islands, Charles Darwin discovered several species of finches that varied from island to Island, which helped him to develop his theory of natural selection.
Answer + Explanation :
1) Sperms have only one set of chromosomes i-e they are haploid while other cells are diploid.
2) Sperm cells come from embryo's gut while other cells can be found in blood , connective tissue , skin , bones etc.
3)Sperm cells are produced through meiosis while other cells are produced from mitosis.
4) Sperm cells are involved in reproduction while other cells have their specific functions in their specific locations.
5) Sperm cells are present is reproductive part or body while other cells are located everywhere.
6) Sperm cells originate from germ cells while other cells originate from stem cells.
7) Sperm cells are smaller then other cells of body.
8) Sperm cells are no more than a nucleus with small amount of cytoplasm and some mitochondrion while other cells follow normal symmetry.
Oxygen levels make no impact, they need CO2.
Sugar concentration makes no impact as that is a product.
Starch makes no impact.
Only light from the choices above is the factor in photosynthesis that could have the greatest effect as it is not a product yet a reactant
Answer:
C-An action potential reaches the presynaptic membrane.
E-Sodium channels on the motor end plate open.
A-Sodium enters the muscle fiber, creating an end-plate potential.
B-Neurotransmitter is released into the synaptic cleft.
D-Neurotransmitter binds to a receptor on the postsynaptic membrane.
Explanation:
In the neuromuscular junction, there is a presynaptic membrane, a postsynaptic membrane, and between these two, there is a gap called the synaptic cleft.
First, an action potential reaches the presynaptic membrane, causing the opening of sodium channels and the entering of Sodium ions to the muscle fiber creating an endplate potential. As a consequence of this, the neurotransmitters contained in vesicles travel down up to the presynaptic membrane, where they release their content into the synaptic cleft. Then, the neurotransmitters bind to the receptors in the ion channels of the postsynaptic terminal. This causes the opening of the ion channels and a rush of ion Sodium to the inside of the postsynaptic membrane, creating an action potential that will travel from cell to cell.
Answer:
Element found in quartz is Oxygen and silicon
