Concept explainers
(a)
Interpretation:
From the given data, the length in centimeters (cm) of human chromosome 11 has to be calculated.
Concept Introduction:
Chromosomes:
The double helix structures of copied DNAs get coiled to save space. Such coiled forms of DNA organize and protect the genetic information. This complete set of genetic information is packaged into chromosomes which are rod-shaped. So, a compact package of coiled DNAs is known chromosome which lies in the nucleus of cells.
(b)
Interpretation:
From the given data, the factor by which the DNA is condensed further has to be found.
Concept Introduction:
DNA:
DNA is a self-replicating genetic material that is present in all living organisms. It carries genetic information from one generation to the several successive generations which brings several physical traits in an individual as a sign of resemblance from his/her parents and ancestors. Those traits are the uniqueness to the individual.
(c)
Interpretation:
A reason for why the level of compaction of DNA in chromosome as discussed in sub-part (b) is necessary has to be suggested.
Concept Introduction:
DNA:
DNA is a self-replicating genetic material that is present in all living organisms. It carries genetic information from one generation to the several successive generations which brings several physical traits in an individual as a sign of resemblance from his/her parents and ancestors. Those traits are the uniqueness to the individual.
Chromosomes:
The double helix structures of copied DNAs get coiled to save space. Such coiled forms of DNA organize and protect the genetic information. This complete set of genetic information is packaged into chromosomes which are rod-shaped. So, a compact package of coiled DNAs is known chromosome which lies in the nucleus of cells.
Want to see the full answer?
Check out a sample textbook solutionChapter 13 Solutions
Chemistry In Context
- Ethanol (grain alcohol) has a density of 0.789 g/cm3. What volume of ethanol must be poured into a graduated cylinder to equal 30.3 g?arrow_forwardA sample of a gaseous substance at 25C and 0.862 atm has a density of 2.26 g/L. What is the molecular weight of the substance?arrow_forwardCalculate the density of helium, He, in grams per liter at 21C and 752 mmHg. The density of air under these conditions is 1.188 g/L. What is the difference in mass between l liter of air and 1 liter of helium? (This mass difference is equivalent to the buoyant, or lifting, force of helium per liter.)arrow_forward
- A piece of metal wire has a volume of 20.2 cm3 and a mass of 159 g. What is the density of the metal? We know that the metal is manganese, iron, or nickel, and these have densities of 7.21 g/cm3 7.87 g/cm3, and 8.90 g/cm3, respectively. From which metal is the wire made?arrow_forwardExercise 2.9A student wants to identify the main component in a commercial liquid cleaner. He finds that 35.8 mL of the cleaner weighs 28.1 g. Of the following possibilities, which is the main component of the cleaner? Substance Density, g/cm3 Chloroform 1.483 diethyl ether 0.7 14 isopropyl alcohol 0.785 toluene 0.867arrow_forwardFormic acid, isolated in 1670, is the irritant in ant bites. The structure of formic acid is One of the carbonoxygen bonds has a length of 136 pm; the other is 123 pm long. What is the length of the CO bond in formic acid?arrow_forward
- Using the definitions 1 in. = 2.54 cm and 1 yd = 36 in. (both exact), obtain the conversion factor for yards to meters. How many meters are there in 3.54 yd?arrow_forwardYou place 1.85 grams of wood in a vessel with 9.45 grams of air and seal the vessel. Then you heat the vessel strongly so that the wood burns. In burning, the wood yields ash and gases. After the experiment, you weigh the ash and find that its mass is 0.28 gram. What is the mass of the gases in the vessel at the end of the experiment?arrow_forwardA volume of carbon dioxide gas, CO2, equal to 20.0 L was collected at 23C and 1.00 atm pressure. What would be the volume of carbon dioxide collected at 23C and 0.830 atm?arrow_forward
- Exercise 2.4 Wine is often bottled in 0.750-L containers. Using the appropriate equivalence statement from Table 2.7, calculate the volume of such a wine bottle in quarts.arrow_forwardercise 8.7 Penicillin, an important antibiotic (antibacterial agent), was discovered accidentally by the Scottish bacteriologist Alexander Fleming in 1928, although he was never able to isolate it as a pure compound. This and similar antibiotics have saved millions of lives that would otherwise have been lost to infections. Penicillin, like many of the molecules produced by living systems, is a large molecule containing many atoms. One type of penicillin, penicillin F, has the formula C14H20N2SO4 . Compute the mass percent of each element in this compound.arrow_forwarda. When you report your weight to someone, how many significant figures do you typically use? b. What is your weight with two significant figures? c. Indicate your weight and the number of significant figures you would obtain if you weighed yourself on a truck scale that can measure in 50 kg or 100 lb increments.arrow_forward
- General Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage LearningIntroductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning