Which statement correctly describes the organization of dna and its related structures?

dna is contained in the cell nucleus, and the cell nucleus is contained in chromosomes.

dna is contained in chromosomes, and chromosomes are contained in the cell nucleus.

chromosomes are contained in dna, and dna is contained in the cell nucleus.

chromosomes are contained in the cell nucleus, and the cell nucleus is contained in dna.

The correct option will be DNA is contained in chromosomes, and chromosomes are contained in the cell nucleus.

Explanation:

DNA is the genetic material of the eukaryotic organisms which is organised into highly specialized structures to fit in the nucleus of every cell.

DNA forms association with proteins to form compact structure as:

1. 11 nm nucleosomes- formed by wrapping of DNA around histone proteins   forming nucleosomes which appears as beads on a string structure.

2. 30 nm fiber- formed by folding of nucleosomes which form compact structure.

3. 300 nm looped structure- solenoid structure formed by folding of 30 nm fiber.

4. 700 nm chromosome structure- formed by folding of 300 nm structure forming compact structure called chromosome.

So, the continuous thread-like molecule of DNA forms a compact structure called chromosome by forming association with proteins which fits into the microscopic space of the eukaryotic nucleus.

Thus, DNA is contained in chromosomes, and chromosomes are contained in the cell nucleus is the correct answer.

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.