Food webs normally start at the bottom and work their way up. Like the plants will be at the bottom, and then each level shows the animals getting bigger while losing energy. You continually lose energy as you work your way up an ecosystem, so normally there are only three or four levels. I hope this helps!
Answer:
True.
Explanation:
The generation time of that species would determine the time needed for bacteria in the culture to multiply to a sufficiently large number of cells that can be observed as visible colonies.
Diamonds, Corundum, and Topaz would all be able to scratch quartz.
All three minerals above have a more increased number of hardness then quartz
1)
To feel an impulse, the receptor must be sent a signal to the brain where it could be interpreted. The signal should be caught by the receptor, send into the spinal cord, then arrives at the brain.
1. Object touch the heel
2. impulses generated in the receptor cells
3. impulses transmitted through a sensory neuron
4. impulses transmitted through neurons in the spinal cord
5. impulses reach the brain
6. brain process the impulses
7. you feel the object touching your heel
2)
Nerves
Spinal cord
Brain
The nervous system is made of central nervous system and peripheral nervous system. The peripheral nervous system is made of the network of nerves. The central nervous system is the brain and spinal cord that will receive impulse and send a response afterward. While brain could send the various signal, spinal cord could only send responses for reflexes.
3)
a. the diagram is showing Neuron cell
The nervous system is made up of multiple neuron cells. The neuron cells are specialized in sending a signal. It has a long axon that could deliver the signal far away. The signal is only one way though, so you will need a different neuron for receiving receptor signal and sending a response signal.
b. Two missing labels in the picture would be: axon.
It seems both of the label pointing out to the axon of the nerve cell. Since both of it pointing the same neuron cell, it should have the same name. Axon has a role in delivering nutrient and signal across the body.
c. Myelin sheath will allow the signal to run faster. This will help in a process that needs speed like reflexes. The sheath will cover a part of the neuron and prevent the ion exchange. Myelin sheath stop in some part called node of Ranvier. This will allow the action potential to "leap" from node to node, make it travel much faster.
creating simple sugars from smaller molecules
Explanation:
The human cell is not capable of creating simple sugars from smaller molecules.
Simple sugars are the smallest unit of carbohydrates and are not created by the body. They are products obtained from food digestion.
- Simple sugars cannot be hydrolyzed into simpler carbohydrate molecules.
When they combine together, they form polysaccharides which are complex carbohydrates.
These polysaccharides are complex carbohydrates.
learn more:
Carbohydrates brainly.com/question/10744528
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