Answer:
A. Bacterial species use a limited number of nutrient sources.
Explanation:
There are two classes of nutrients that are indispensable to bacteria: macronutrients (carbon, oxygen, nitrogen, sulfur, phosphorus and hydrogen) and micronutrients (iron, zinc, manganese, calcium, potassium, sodium, copper, chlorine, cobalt, molybdenum, selenium, magnesium, among many others). But it takes more than the nutrients for them to feed, it takes the metabolism, because it is through it that they transform what they have into food.
The absorption of nutrients to carry out the metabolism only occurs because there are growth factors (environmental) that influence the development of the bacteria. Some examples of these factors are: light, temperature, pH, oxygen and osmotic pressure. Each organism has an optimal growth temperature, or a favorable pH to successfully carry out its metabolism. This will vary from species to species.
The toxic condition characterized by retention of
nitrogenous substances in the blood is called uremia. Uremia is a toxic condition caused by
retention in the blood of nitrogenous waste products normally excreted in the
urine. Acute renal failure denotes a
sudden onset of renal failure, such as that caused by an accident, certain
drugs or poison. The kidneys may recover or the damage may be permanent. If the
kidneys stop functioning this condition is what they called uremia, therefore
the body is full of extra water and
waste products, leading to swelling in the hands or feet, fatigue and weakness.
End-stage renal disease refers to when the kidneys have lost all or nearly all
function.
It could possibly harm other plants and if those plants become less and are a good source for animals, the animals would most likely die
Answer:
a. Only the DNA of β cells contains the gene for insulin; only the DNA of chief cells contains the gene for pepsinogen
Explanation:
As stated in the question above, insulin production is exclusive to β cells in the pancreas. This is because only these cells have a gene that manages the production and excretion of insulin within an organism. Similarly, only the main cells of the stomach have the capacity to produce pepsinogen, which indicates that the gene responsible for managing this production is unique to these cells.
