b. higher levels of hemoglobin
c. insulating feathers
d. higher body temperatures
The correct answer is option b. higher levels of hemoglobin.
The partial pressure of the oxygen decrease as the height from the sea level is increased. Due to the decrease in the partial pressure, the amount of the oxygen delivered by the hemoglobin to cell decrease. So, in order to cope up the condition, the amount of the hemoglobin in the blood is increased. the increased amount of the hemoglobin delivers more oxygen than the normal amount of hemoglobin can do, so, it help in survival at low oxygen levels.
B. proteins
C. steroids
D. amino acids
Fats are the most highly concentrated source of energy in the body, providing around 9 calories per gram. They are stored in the body for times of energy shortage, while proteins, carbohydrates, steroids, and amino acids have other primary functions.
The most highly concentrated source of energy in the body is fats. While all macronutrients - proteins, carbohydrates, and fats - provide energy, fats are the most energy-dense. They provide about 9 calories per gram, compared to 4 calories per gram for both proteins and carbohydrates. This is why fats are often stored in the body for times of energy shortage. Steroids and amino acids, while important for other functions in the body, aren't primary sources of energy.
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the answer is fats here you go
photosynthesis and nitrification
solar energy capture and re-radiation
evaporation and precipitation
2 The biological role played by a species in its environment is called a:
ecosystem
habitat
niche
population
3 Predators rarely kill and eat all available prey because:
predator and prey species often occupy the same trophic level in an ecosystem
prey species often lack protective mechanisms to deter being eaten
many predator and prey species have a commensalistic relationship
predator species often will switch its prey as one prey species becomes less abundant
4 _____ is an overabundance of nutrients that leads to excessive plant growth and
reduction of oxygen in an ecosystem.
denitrification
eutrophication
nitrification
phosphorylation
5 Which of these biomes receives the greatest amount of yearly rainfall?
boreal forest
grasslands
temperate forests
tropical forests
6 An organism's position within a food web is known as its:
ecosystem
habitat
niche
trophic level
7 Which of the following describes organisms in a pelagic zone?
plankton floating near the ocean surface
bottom-dwellers on the ocean floor
barnacles glued to stone in an intertidal zone
frogs in a pond close to the pond's edge
8 Which of the following is NOT an example of secondary succession?
farmland is abandoned
a forest is clear cut
a lava flow covers the landscape
a wildfire burns away the vegetation on a hillside
9 In a lake, the epilimnion is the:
environment found close to shore in a lake
environment found at the lake bed
lower, colder layer
upper surface layer
Exocytosis is the process that refers to materials leaving the cell. It involves the enveloping of waste material in a membrane which fuses with the plasma membrane's interior, allowing for expulsion of waste into the extracellular space.
The term that refers to materials leaving the cell is B. Exocytosis. Exocytosis is essentially the process of moving materials from within the cell to the extracellular fluid. This is achieved through the enveloping of waste material in a membrane which then fuses with the plasma membrane's interior. This fusion causes the membranous envelope to open, allowing the expulsion of waste materials into the extracellular space. Examples of this process include cells like those of the stomach or pancreas, which manufacture and secrete enzymes via exocytosis, or endocrine cells releasing hormones throughout the body.
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