Answer:
Sensors or sensory receptors must sense any change in blood glucose levels.
Explanation:
A feedback system includes a receptor, control center, and effector. The receptors serve to sense the deviation from homeostasis and send the nerve impulses or chemical signals to the respective control center. The control center receives input from receptors and sends nerve impulses or chemical signals to the effectors to bring about the desired change to restore homeostasis.
Negative feedback regulation of blood sugar includes sensing the rise or drop in blood sugar levels by sensory receptors. This sensory information is sent to the control center which in turn commands the effectors (pancreas) to secrete insulin or glucagon hormones to lower down or raise the blood glucose levels. Feedback regulation does not work in the absence of any of the components (sensory receptor, control center, and effector).
Answer:
Before answer this question, you need to know what is the half-life of a compound, the term half-life is defined as the time it takes for one-half of the atoms of a radioactive material to disintegrate. Knowing this you know that has passed half of the half-time, so you should probably have 25% of the original amount of 235U. This problem may be tricky because it says half of the time to reach the half-time, but 50% of the compound will be present in 750 million years after the death of the specimen.
Prokaryotes taht obtain energy from sunlight are called PHOTOTROPH. These prokaryotes use energy from the sun to synthesize organic compound for food and to carry out other metabolic processes. The energy synthesized from the sun is in form of ATP.
The sequence of Nucleotides in a DNA molecule determine the protein that will be produced. Nucleotides are the basic structural unit of DNA.
Answer:
It would most likely show that at some point Australia in that area had lots of dense forestry in that region as the abundance of forestry would be needed to be turned into coal.
Explanation: During the carboniferous the planet was covered in a large abundance of forestry that would often go into that ground and be compressed by other plant life and occasional flooding of seas and would eventually be turned into coal over millions of years.
