d. containing base uracil: RNA is double-stranded and contains nitrog DNA is sin
ID: 147158 • Letter: D
Question
d. containing base uracil: RNA is double-stranded and contains nitrog DNA is single-stranded and contains the sugar deoxyribose and the nitrogen- e. DNA is double-stranded and contains the sugar ribose andoxrbose base thymine: RNA is single-stranded and contains nitrogen-containing base uracil and contains sugar ribose and the sugar deoxyribose and the 15. Which of the following is NOT a protein function? A. support B. transportation C. defense D. motion E. insulation 16. What are the basic structures that make up a nu cleotide? pentose sugar, phosphate and nitrogen-containing base B. pentose sugar, nitrate and phosphorus-containing base C. ribose sugar, phosphate and nitrogen-conta E. pentose sugar, sodium and nitrogen-containing base 17. Which is NOT true about the cell theory? A Its various parts were described by Schleiden, Schwann, and Virchow. B. It states that all organisms are composed of cells. C. It states that all cells come from preexisting cells. D. It states that bacteria and other small organisms can arise spontaneously E. It s accepted today by biologists as applying to virtually all forms of life. with its polymer? 18. In which of the following is the correct monomer matched a. fatty acid - DNA b. monosaccharide - lipid c. glycerol - carbohydrate d. amino acid - protein e. nucleotide - carbohydrate 19. Which of the following features is unique to bacterial cells'? A. nucleoid regiorn B. nucleus C. cell membrane D. cell wall E. ribosome 20. Which is NOT true of eukaryotic cells? A. A true nucleus contains the chromosomes B. Eukaryotic cells contain membrane-bounded compartments. C. They contain ribosomes that are smaller than those of prokaryotic cels. D. They all contain mitochondria. E. They contain many organelles in the cytoplasm. 21. Which of these is NOT part of the endomembrane system of the cell? A. mitochondria B. endoplasmic reticulum C. lysosomes D. Golgi complexExplanation / Answer
15. The answer is- E. Insulation.
Proteins perform all other task except insulation.
Fats works as insulator.
16. The answer is- A. Pentose sugar, phosphate and nitrogen containing base.
Nucleotide is the structural monomer of nucleic acids like DNA and RNA.
A nuclnucleotide must contain pentose sugar, phosphate and nitrogenous bases like adenine, guanine,thymine, cytosine and uracil.
17. The answer is - D. It states that bacteria and other small organisms can arise spontaneously.
According to cell theory cell comes from preexisting cells and each organism is made up of cell.
But bacteria and other small organisms can not generate spontaneously. They have to come from preexisting cell.
18. The answer is- D. Amino acid- proteins
Amino acid makes protein.
Fatty acids are monomer of fats.
Nucleotide is the monomer of nucleic acid.
Monosaccharide gives polysaccharide.
19. The answer is- A. Nucleoid region.
In prokaryotes that is bacteria they don't have a true membrane bound nucleus. Their DNA is located in the cytoplasm the location is called nucleoid.
20. The answer is- C. They contain ribosomes that are smaller than those of prokaryotic cell.
Eukaryotes possess 80S ribosome where as prokaryotes has 70S ribosome.
21. The answer is- A mitochondria.
Mitochondria is not part of endomembrane system. Endomembrane system is composed of endoplasmic reticulum, golgy body and lysosome.
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