Which statement regarding cholesterol is false? it is the precursor for steroid hormones. it is not usually a component of eukaryotic membranes. it is the precursor for bile acids. it has a hydrophilic functional group.

It is not usually a component of eukaryotic membranes.

Explanation:

Cholesterol is responsible for modulating the fluidity of the cell membranes of eukaryotes.

It is produced in most animal cells, and its formation is substantially active in liver cells, where bile acids are synthesized from cholesterol.

In addition, cholesterol is the precursor of steroid hormones such as progesterone, testosterone, estradiol and cortisol.

Cholesterol (like other lipids) is amphipathic, meaning it has a polar head (hydrophilic) and an apolar tail (hydrophobic).

Given the above, it can be concluded that the false statement is "it is not usually a component of eukaryotic membranes".

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.

c. earths continental crust is thicker than its lithosphere.

because, the lithosphere is the outermost layer of the earth/ 100 km thick and is defined by its machanical properties.the lithosphere contains oceanic and continental crust that varies in age and thickness across locations and geologic time. the lithosphere is the coolest layer of the earth in terms of temperature. the term lithosphere should not be confused with the use of "geosphere" which is used to indicate all of earth systems, including the atmosphere, hydrosphere   and biosphere. the surface of the earth can be divided into the continental crust and the oceanic crust.   the continental crust is made mostly of granite while the oceanic crust is made of basalt. the average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is 5 miles.   three types of rock, igneous, sedimentary, and metamorphic, make up the surface of the earth. that's why 3 option is preferable.