The characteristic feature of prokaryotes cells is that they lack the nucleus.
Further Explanation:
An ecosystem is made up of mainly two kinds of cells:
The single-celled organisms such as bacteria and archaea are the prokaryotes. Cyanobacteria are an example of prokaryotes that synthesize their own food by the process of photosynthesis. The cellular organization of prokaryotes is very simple. Some main features of prokaryotic cells are:
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Answer Details:
Grade: High School
Subject: Biology
Chapter: Plant Cell
Keywords:
Photosynthesis, dehydration, eukaryotic cell, prokaryotic cell, cytoplasm, single-celled, organism, bacteria, archaea, animal, fungi.
It is true that the potential must be strong enough to send a potential to the CNS. The stronger the potential, the more it will excite the transmitter in relaying the message to another neuron, therefore, if this happens, the more will it be easier to pass the message.
The odd hormone insulin Cortisol
Explanation
Cortisol is known as the odd hormone because it is release when someone stressed and it interfer the brain activity by making the person feels like blank. The low cortisol level causes decrease appettite, fatigue, weightloss, different skin problem, low blood sugar and many more. The high level of cortisol causes the weight gain, acne, muscle weakness, thinning skin, flused face and other type of causes.
Among insulin, cortisol, glucagon, and calcitonin, cortisol is the 'odd one out'. It is classified as a corticosteroid, whereas the others are peptide hormones.
The odd hormone in the list of insulin, cortisol, glucagon, and calcitonin, is cortisol. While insulin, glucagon, and calcitonin are all peptide hormones, cortisol is a corticosteroid, a different type of hormone, released by the adrenal cortex in response to long-term stress. Insulin is produced by the beta cells of the pancreatic islets and regulates blood glucose levels. Glucagon, produced by alpha cells of the pancreas, also helps in regulating blood glucose levels. Calcitonin is a hormone produced by the parafollicular cells of the thyroid gland and functions to lower blood calcium levels. Though all these hormones play integral roles in the body, cortisol, as a corticosteroid, is structurally and functionally different from the others, making it the 'odd one out'.
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The index fossils have a shorter time period and wider geographical distribution of fossils.
An Index fossils refers to class of fossils that had a wide geographical distribution and they were present for a comparatively shorter period of time.
They helped in the construction of geological periods that are commonly used today.
Thus, the index fossils have a shorter time period and wider geographical distribution of fossils.
Therefore. the Option B is correct.
Read more about Index fossils
Answer:
Option (2)
Explanation:
Index fossils are defined as those fossils that had a wide geographical distribution and they were present for a comparatively shorter period of time. They had great significance in the field of paleontology. It helped in the construction of geological periods that are commonly used today. It basically helped in forming the geological time scale. The age of the rocks in which these fossils were embedded is easily determined by using radioactive dating techniques.
Thus, the index fossils have a shorter time period and wider geographical distribution of fossils.
Hence, the correct answer is option (2).
Answer: Option C
Explanation:
The secretory proteins are found inside the cell which is secreted by the Endoplasmic reticulum and moves from the same route towards the Golgi apparatus.
Although it is secreted from the endoplasmic reticulum of the cell, but if it is injected from the outside to the inside of the cell then it moves to the rough endoplasmic reticulum and follows the secretory pathway of the cell.
Hence, the correct answer is option C
A) commensalism.
B) mutualism.
C) parasitism.
D) resignation.