Answer:
Symbiotic soil microbes convert nitrogen gas to a form that the plants can use (NH4+ or NO3-)
Answer:
Choice C., High blood glucose levels can result from an overproduction of insulin
Explanation:
Blood sugar levels are regulated by two pancreatic hormones—insulin and glucagon. When blood sugar levels increase, insulin is released (beta cells of the pancreas), it binds to its receptors and consequently increase glucose uptake by cells, which effectively lowers blood glucose levels. On the other hand, when blood sugar levels decrease, glucagon is released (alpha cells of the pancreas), it binds to its cell receptors, and causes glucose to be released into circulation, thereby increasing blood glucose levels.
Answer: Option B
Explanation: If all the cheetahs from the savanna is removed then the population of the gazelle will increase.
The shrubs and trees are producers that is eaten up by the herbivores animals. They at not eaten by the cheetah.
The lion is also not eaten up by the cheetah. There will be no effect o the population of the lions.
Hence, there will be an increase in the population of the gazelle.
The answer is B) The rapid extinction of top-level consumers in the Gulf food webs, such as sharks, dolphins, and sea turtles.
The Deepwater Horizon oil spill in the Gulf of Mexico is the largest in the history of the oil industry. The oil spill created a large layer of floating oil patch over the gulf waters. This layer of oil blocked the exchange of gases like oxygen in the water. The top-level consumers like the dolphins, sharks and sea turtles that need to surface to breath fresh air got coated with the oil and perished.
Answer:
Only active transport requires ATP
Explanation:
Passive transport is the movement of molecules across the cell membrane without the need for energy. These substances usually move from a high concentration to a low concentration.
Active transport relies on energy from ATP to move substances across the plasma membrane. This is usually required when moving substances against their concentration gradient.
