Question

10. Which of the following statements best summarizes the differences between DNA and RNA?
Group of answer choices

DNA nucleotides contain a different pyrimidine base than RNA nucleotides.

The bases in DNA contain sulfur, whereas the bases in RNA do not contain sulfur.

The bases in DNA contain sugars, whereas the bases in RNA do not contain sugar.

DNA encodes hereditary information, whereas RNA does not.

DNA nucleotides contain a different purine base than RNA nucleotides.

9. A phospholipid is a ____.
Group of answer choices

polar lipid molecule that fully interacts with water

nonpolar lipid molecule that is made polar by the addition of a phosphate

polar lipid molecule that is made amphipathic by the addition hydrogen bonds

polar lipid molecule that fully repels water

primary component of biological membranes

5. Maltose is composed of two glucose molecules joined by a glycosidic linkage. Based upon this information, maltose is
Group of answer choices

a hexose

a pentose

a disaccharide

a polysaccharide

a monosaccharide

3.

The mitotic spindle is a microtubular structure that is involved in ____.
Group of answer choices

triggering the compaction and condensation of chromosomes

splitting of the cell (cytokinesis) following mitosis

separation of non-sister chromatids

dissolving the nuclear membrane

moving chromosomes to the metaphase plate

Answer 1

ANSWER :

10. One of the most significant difference between DNA and RNA is presence of different pyrimidine nitrogenous base in them. DNA molecules contains thymine base in some of their nucleotide, but in RNA uracil base is found in place of thymine. Hence option (1) is the correct answer choice.

9. The phospholipid molecules are of amphipathic nature, their polar head are hydrophilic while non-polar tails are hydrophobic in nature. Hence option (5) is the correct answer choice.

5. Maltose is a disaccharide sugar, that composed of two glucose subunits linked via specific glycosidic bonds. Hence option (3) is the correct answer choice.

3. The mitotic spindle is a microtubular structure that is involved in separation of sister chromatids of chromosomes. Hence option (3) is the correct answer choice.