'; answerText[16] = '
'; numberText[17] = '18.'; questionText[17] = '
a.
|
nucleosomes.
|
c.
|
histones.
|
b.
|
chromatids.
|
d.
|
chromatin.
|
'; answerText[17] = '
'; numberText[18] = '19.'; questionText[18] = '
a.
|
mitosis.
|
c.
|
meiosis II.
|
b.
|
meiosis I.
|
d.
|
fertilization.
|
'; answerText[18] = '
'; numberText[19] = '20.'; questionText[19] = '
a.
|
dividing squares : circles
|
c.
|
stacking pennies : disorder
|
b.
|
card shuffling : new combinations
|
d.
|
measuring lines : lack of exactness
|
'; answerText[19] = '
'; numberText[20] = '21.'; questionText[20] = '
a.
|
mitosis only
|
c.
|
both mitosis and ' + 'meiosis
|
b.
|
meiosis only
|
d.
|
neither mitosis nor meiosis
|
'; answerText[20] = '
'; numberText[21] = '22.'; questionText[21] = '
a.
|
mitosis and interphase.
|
b.
|
synthesis and cytokinesis.
|
c.
|
the M phase and the S phase.
|
d.
|
cytokinesis and mitosis.
|
'; answerText[21] = '
'; numberText[22] = '23.'; questionText[22] = '
a.
|
monoploid zygote
|
c.
|
monoploid sperm
|
b.
|
diploid zygote
|
d.
|
diploid ovum
|
'; answerText[22] = '
'; numberText[23] = '24.'; questionText[23] = '
a.
|
mitosis only
|
c.
|
both mitosis and ' + 'meiosis
|
b.
|
meiosis only
|
d.
|
neither mitosis nor meiosis
|
'; answerText[23] = '
'; numberText[24] = '25.'; questionText[24] = '
a.
|
breaking apart into separate genes.
|
b.
|
extending to form very long, thin molecules.
|
c.
|
wrapping tightly around associated proteins.
|
d.
|
being enzymatically changed into a protein.
|
'; answerText[24] = '
'; numberText[25] = '26.'; questionText[25] = '
a.
|
nucleus
|
c.
|
Golgi bodies
|
b.
|
ribosomes
|
d.
|
chloroplasts
|
'; answerText[25] = '
'; numberText[26] = '27.'; questionText[26] = '
a.
|
centriole.
|
c.
|
aster.
|
b.
|
spindle.
|
d.
|
nucleosome.
|
'; answerText[26] = '
'; numberText[27] = '28.'; questionText[27] = '
a.
|
mitosis : C
|
c.
|
cytokinesis : ' + 'M
|
b.
|
mitosis : meiosis
|
d.
|
DNA copying : S
|
'; answerText[27] = '
'; numberText[28] = '29.'; questionText[28] = '
a.
|
mitosis only
|
c.
|
both mitosis and ' + 'meiosis
|
b.
|
meiosis only
|
d.
|
neither mitosis nor meiosis
|
'; answerText[28] = '
'; numberText[29] = '30.'; questionText[29] = '
a.
|
replicate their DNA
|
c.
|
exchange their genes
|
b.
|
double their length
|
d.
|
uncoil their proteins
|
'; answerText[29] = '
'; numberText[30] = '31.'; questionText[30] = '
a.
|
92 chromosomes.
|
c.
|
23 chromosomes.
|
b.
|
46 chromosomes.
|
d.
|
64 chromosomes.
|
'; answerText[30] = '
'; numberText[31] = '32.'; questionText[31] = '
a.
|
centrioles.
|
b.
|
centromeres.
|
c.
|
a cell plate.
|
d.
|
chromatin.
|
'; answerText[31] = '
'; numberText[32] = '33.'; questionText[32] = '
a.
|
only during interphase
|
b.
|
only when they are being replicated
|
c.
|
only during cell division
|
d.
|
only during the G1 phase
|
'; answerText[32] = '
'; numberText[33] = '34.'; questionText[33] = '
a.
|
Interphase is usually the longest phase.
|
b.
|
DNA replicates during the S phase.
|
c.
|
Cell division ends with cytokinesis.
|
d.
|
The cell grows only occurs during the G2 ' + 'phase.
|
'; answerText[33] = '
'; numberText[34] = '35.'; questionText[34] = '
a.
|
female : gametes
|
c.
|
male : YY
|
b.
|
female : eggs
|
d.
|
male : XY
|
'; answerText[34] = '
'; numberText[35] = '36.'; questionText[35] = '
a.
|
asters
|
c.
|
nucleoli
|
b.
|
microtubules
|
d.
|
chromosomes
|
'; answerText[35] = '
'; numberText[36] = '37.'; questionText[36] = '
a.
|
molecular structure of a chromosome.
|
b.
|
genes that are present in a particular strand of ' + 'DNA.
|
c.
|
medical history of ' + 'an individual.
|
d.
|
chromosomes present ' + 'in a somatic cell.
|
'; answerText[36] = '
'; numberText[37] = '38.'; questionText[37] = '
a.
|
It helps separate the chromosomes.
|
b.
|
It breaks down the nuclear membrane.
|
c.
|
It duplicates the DNA.
|
d.
|
It divides the cell in half.
|
'; answerText[37] = '
'; numberText[38] = '39.'; questionText[38] = '
a.
|
chromosomes gain electrons and hydrogen ' + 'atoms.
|
b.
|
gametes are much ' + 'smaller than the cells from which they are produced.
|
c.
|
the number of cells is reduced from four to ' + 'two.
|
d.
|
diploid cells ' + 'divide to become haploid cells.
|
'; answerText[38] = '
'; numberText[39] = '40.'; questionText[39] = '
a.
|
cell division.
|
b.
|
metaphase.
|
c.
|
interphase.
|
d.
|
mitosis.
|
'; answerText[39] = '
'; studentName = StripSpaces(f.student_name.value); FixMTF(f); index = 0; for (i=0; i < f.length; ++i) { if (f.elements[i].name.indexOf(":") > 0) { text = StripSpaces(GetResponse(index, f.elements[i])); if (text.length == 0) ++numBlank; ++index; } } if (studentName == "") { alert("Student name cannot be blank."); return(false); } if (numBlank > 0) { if (numBlank == 1) msg = "1 question"; else msg = numBlank + " questions"; if (!confirm("You have not answered " + msg + " Are you sure you want to end the test?")) return(false); } index = 0; for (i=0; i < f.length; ++i) { if (f.elements[i].name.indexOf(":") > 0) { text = GetResponse(index, f.elements[i]); if (ansMap[index] == "") { prefixText[index] = "
"; ++numSubjective; } else { isCorrect = ScoreAnswer(index, text); if (isCorrect) ++numCorrect; ++numPossible; prefixText[index] = BuildPrefixText(index, text, isCorrect); } responseText[index] = TranslateHtmlString(text); ++index; } } if (showNotes) { for (i=0; i < numQuestions; ++i) { if (qtypeMap.charAt(i) == "2") notesText[i] = FixMCNotes(notesText[i], responseText[i]); } } if (numPossible > 0) scorePercent = Math.round(100.0 * numCorrect / numPossible); else scorePercent = 0; studentName = TranslateHtmlString(studentName); document.writeln("n"); document.writeln("
n"); document.writeln("
"); document.writeln("Name: " + studentName + ""); document.write("Score: " + numCorrect + " / " + numPossible + " (" + scorePercent + "%)"); if (numSubjective > 0) { document.write(" [" + numSubjective + " subjective "); if (numSubjective == 1) document.write("question"); else document.write("questions"); document.write(" not graded]"); } document.writeln(" "); document.writeln("
"); document.writeln("
"); document.writeln(instructionText[currentInstruction]); document.writeln("
"); document.writeln(" |
||||||||
"); document.writeln(narrativeText[currentNarrative]); document.writeln("
"); document.writeln(" |
||||||||
" + prefixText[i] + " |
" + numberText[i] + "
|
" + questionText[i]); document.writeln("
"); document.writeln("
"); document.writeln("
|
"); document.writeln("
"); document.writeln("
|
|
"); document.writeln(" | "); document.write(""); document.writeln(""); document.writeln(" |
"); document.writeln(""); document.writeln(""); document.close(); return(false); } function GetResponse(answerIndex, answer) { var listIndex; var responseText; if (listMap.charAt(answerIndex) == "1") { listIndex = answer.selectedIndex; responseText = answer.options[listIndex].text; } else responseText = answer.value; return(responseText); } function ScoreAnswer(answerIndex, responseText) { var listIndex; var answerText; answerText = ansMap[answerIndex]; if (qtypeMap.charAt(answerIndex) == "4") return(NumericCompare(responseText, answerText)); else if (qtypeMap.charAt(answerIndex) == "5") return(MultiCompare(responseText, answerText)); else if (responseText.toUpperCase() == answerText.toUpperCase()) return(true); else return(false); } function BuildPrefixText(answerIndex, responseText, isCorrect) { var text; var listIndex; text = "
" if (isCorrect) text += "" else text += " " if (listMap.charAt(answerIndex) == "1") { if (responseText.length == 0) responseText = " "; text += " " + responseText + " "; } text += "
" return(text); } function StripSpaces(s) { var len; var i; len = s.length; for (i=len - 1; i >= 0 && s.charAt(i) == " "; --i) len = i; if (len == 0) s = ""; else if (len != s.length) s = s.substring(0, len); return(s); } function TranslateHtmlString(text) { var newText; var replaceString; var position; var length; var breakPos; var skipExtra; var i; newText = ""; position = 0; length = text.length; while (position < length) { skipExtra = 0; breakPos = -1; for (i=position; i < length && breakPos < 0; ++i) { switch(text.charAt(i)) { case '>': replaceString = ">"; breakPos = i; break; case '<': replaceString = "<"; breakPos = i; break; case '&': replaceString = "&"; breakPos = i; break; case 'r': if ((i + 1) < length && text.charAt(i + 1) == 'n') skipExtra = 1; replaceString = "
"; breakPos = i; break; case 'n': replaceString = "
"; breakPos = i; break; case ' ': if ((i + 1 < length) && text.charAt(i + 1) == ' ') { replaceString = " "; breakPos = i; } break; } } if (breakPos < 0) { newText += text.substring(position, length); position = length; } else { if (breakPos > position) newText += text.substring(position, breakPos); newText += replaceString; position = breakPos + 1 + skipExtra; } } return(newText); } function FixMCNotes(notesText, studentText) { var displayText; var searchText; var upperNotes; var charCode; var startIndex; var endIndex; displayText = ""; if (studentText.length > 0 && notesText.length > 0) { upperNotes = notesText.toUpperCase(); studentText = studentText.toUpperCase(); charCode = studentText.charCodeAt(0); searchText = "/" + String.fromCharCode(charCode) + "/"; startIndex = upperNotes.indexOf(searchText); if (startIndex >= 0) { startIndex += searchText.length; searchText = "/" + String.fromCharCode(charCode + 1) + "/"; endIndex = upperNotes.indexOf(searchText, startIndex); if (endIndex < startIndex) endIndex = notesText.length; displayText = notesText.substring(startIndex, endIndex); } else if (notesText.charAt(0) != "/") displayText = notesText; } return(displayText); } function NumericCompare(s1, s2) { var s1Sign; var s2Sign; var tempString; var decimalCount; var decimalPos; var numToDelete; var len; var ch; var i; s1.toUpperCase(); s2.toUpperCase(); if (s1 == s2) return(true); else { s1Sign = 1; s2Sign = 1; tempString = ""; for (i=0; i < s1.length; ++i) { ch = s1.charAt(i); if (ch == "-" && tempString.length == 0) s1Sign = -1; else if ((ch >= "0" && ch <= "9") || ch == ".") tempString += ch; } s1 = tempString; decimalCount = 0; decimalPos = -1; for (i=0; i < s1.length; ++i) { if (s1.charAt(i) == '.') { ++decimalCount; if (decimalPos < 0) decimalPos = i; } } if (decimalCount == 1 && decimalPos >= 0) { len = s1.length; for (i=len - 1; i >= decimalPos; --i) { if (i == decimalPos || s1.charAt(i) == '0') len = i; else break; } if (len < s1.length) s1 = s1.substring(0, len); if (s1.length == 0) s1 = "0"; } numToDelete = 0; for (i=0; i < s1.length; ++i) { if (s1.charAt(i) == "0") ++numToDelete; else break; } if (numToDelete > 0) { if (numToDelete == s1.length) --numToDelete; if (numToDelete > 0) s1 = s1.substring(numToDelete); } ///////////////////////////////////////////// tempString = ""; for (i=0; i < s2.length; ++i) { ch = s2.charAt(i); if (ch == "-" && tempString.length == 0) s2Sign = -1; else if ((ch >= "0" && ch <= "9") || ch == ".") tempString += ch; } s2 = tempString; decimalCount = 0; decimalPos = -1; for (i=0; i < s2.length; ++i) { if (s2.charAt(i) == '.') { ++decimalCount; if (decimalPos < 0) decimalPos = i; } } if (decimalCount == 1 && decimalPos >= 0) { len = s2.length; for (i=len - 1; i >= decimalPos; --i) { if (i == decimalPos || s2.charAt(i) == '0') len = i; else break; } if (len < s2.length) s2 = s2.substring(0, len); if (s2.length == 0) s2 = "0"; } numToDelete = 0; for (i=0; i < s2.length; ++i) { if (s2.charAt(i) == "0") ++numToDelete; else break; } if (numToDelete > 0) { if (numToDelete == s2.length) --numToDelete; if (numToDelete > 0) s2 = s2.substring(numToDelete); } if (s1Sign == s2Sign && s1 == s2) return(true); } return(false); } function MultiCompare(responseText, answerText) { var startIndex; var endIndex; var partialText; responseText = responseText.toUpperCase(); answerText = answerText.toUpperCase(); startIndex = 0; do { endIndex = answerText.indexOf("r", startIndex); if (endIndex < 0) partialText = answerText.substring(startIndex); else partialText = answerText.substring(startIndex, endIndex); if (responseText == partialText) return(true); startIndex = endIndex + 1; } while (endIndex > 0); return(false); } function FixMTF(f) { var text; var letter; var theList; var listIndex; var number; var i; for (i=0; i < f.length; ++i) { if (f.elements[i].name.indexOf("MTF:") == 0) { number = parseInt(f.elements[i].name.substring(4), 10); theList = f["MTF-" + number + "-1"]; if (theList) { listIndex = theList.selectedIndex; letter = theList.options[listIndex].text; } else letter = ""; text = StripSpaces(f["MTF-" + number + "-2"].value); if (text == "") f.elements[i].value = letter; else f.elements[i].value = letter + "," + text; } } } function AllowReset() { return(window.confirm("Do you want to clear all of your answers?")); } // -->
|
True/False
Indicate whether the sentence or statement is true or false.
|
||||||||||
1. |
DNA replicates during interphase
|
|||||||||
2. |
Chromatids separate from each other during telophase.
|
|||||||||
3. |
Four sperm are produced from each cell undergoing meiosis in a male.
|
|||||||||
4. |
Chromatin appears as tightly coiled, rod-shaped structures in the cell nucleus.
|
|||||||||
5. |
Each homologue of a chromosome pair has a different size and shape.
|
|||||||||
6. |
Meiosis produces diploid cells.
|
|||||||||
7. |
Sperm and egg cells contain only one member of each homologous pair of chromosomes
|
|||||||||
8. |
The information needed by a cell to direct its activities and to determine its characteristics is contained in molecules of deoxyribonucleic acid (DNA).
|
|||||||||
9. |
Meiosis is identical to mitosis except for the kind of cells in which it occurs
|
|||||||||
10. |
Variation promotes a better chance for survival should change in the environment occur.
|
|||||||||
Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
|
||||||||||
11. |
During anaphase I of meiosis
|
|||||||||
12. |
This process results in the production of diploid cells.
|
|||||||||
13. |
Which does not occur during mitosis in an animal cell?
|
|||||||||
14. |
A certain cell contains the following chromosomes F and F*; G and G*; the possible combinations of these chromosomes in the gametes of this organism are
|
|||||||||
15. |
During cell division, the cytoplasm divides to become two new cells during
|
|||||||||
16. |
Each pair of chromatids is attached at an area called the
|
|||||||||
17. |
Which cells in the normal human body rarely undergo cell division?
|
|||||||||
18. |
The DNA of chromosomes is coiled around special proteins called
|
|||||||||
19. |
Separation of homologues occurs during
|
|||||||||
20. |
crossing over : genetic variation::
|
|||||||||
21. |
Two nuclei are produced during
|
|||||||||
22. |
The two main stages of cell division are called
|
|||||||||
23. |
Fertilization produces a
|
|||||||||
24. |
What is responsible for growth by increasing cell number?
|
|||||||||
25. |
In order to fit within a cell, DNA becomes more compact by
|
|||||||||
26. |
The genetic information in a cell is contained in the
|
|||||||||
27. |
The thread-like structure that helps move the chromosomes apart during mitosis is called the
|
|||||||||
28. |
growth : G ::
|
|||||||||
29. |
Human cells with 26 chromosomes are produced during
|
|||||||||
30. |
During crossing-over, portions of the chromatids
|
|||||||||
31. |
As a result of mitosis in a human body cell, the nucleus of each daughter cell contains
|
|||||||||
32. |
One difference between cell division in plant cells and in animal cells is that plant cells have
|
|||||||||
33. |
When during the cell cycle are chromosomes visible?
|
|||||||||
34. |
Which of the following is NOT a correct statement about the events of the cell cycle?
|
|||||||||
35. |
female : XX::
|
|||||||||
36. |
In cell division, chromatin material becomes
|
|||||||||
37. |
A student can study a karyotype to learn about the
|
|||||||||
38. |
What is the role of the spindle during mitosis?
|
|||||||||
39. |
Meiosis I is often called “reduction division” because
|
|||||||||
40. |
The process by which a cell divides into two daughter cells is called
|