Term
True Or False
Despite years of research, the actual structure of the DNA molecule is still unknown. |
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Definition
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True Or False
In all living things, DNA replication must occur afte cell division. |
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Definition
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Term
True Or False
Before a DNA molecule can replicate itself, it must make itself more compact. THis is accomplished by the double helix coilin on itself. |
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Definition
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Term
True Or False
The information needed by a cell to direct its activited and to determne its characteristics is contained in molecules of deoxyribonucleic acid (DNA). |
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Definition
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Term
True Or False
Eukaryotic chromosomes are contained within a nucleus, while prokaryotic chromosomes are not. |
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Definition
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Term
True Or False
Gametes are diplod so that when ferilization occurs, the resulting zygote will have the characteristic number of chromosomes for that species. |
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Definition
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Term
True Or False
Cells spend most of their lifetimes in interphase. |
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Definition
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Term
True Or False
During telophase, a nuclear envelope surrounds each new set of chromosomes. |
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Definition
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Term
True Or False
After mitosis and cytokinesis, each new cell has a complete set of the original cell's chromosomes. |
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Definition
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Term
True Or False
Cytokinesis only occurs during metaphase II. |
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Definition
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Term
True Or False
Meiosis results in the formation of haploid cells from diploid cells. |
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Definition
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Term
True Or False
Meiosis produces four nuclei that have a different chromosome number from the original cell's nucleus. |
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Definition
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Term
| The primary function of DNA is to... |
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Definition
| b. store and transmit genetic information. |
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Term
All of the following are true about the structure of DNA except...
number 14 |
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Definition
| a. short strands of DNA are contained in chromosomes inside the nucleus of a cell. |
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Term
| Molecules of DNA are composed of long chains of... |
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Definition
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Term
Which of the following is not part of a molecule of DNA?
Number 16 |
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Definition
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Term
| A nucleotide consists of... |
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Definition
| c. a sugar, a phosphate group, and a nitrogen-containing base. |
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Term
| The part of the molecule for which deoxyribonucleic acid is named for is the... |
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Definition
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Term
| Refer to the illustration above. The entire molecule shown in the diagram is called a(n) |
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Definition
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Term
| Purines and pyrimidines are... |
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Definition
| d. bases found in nucleotides. |
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Term
| The scientists credited with establishing the structure of DNA are... |
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Definition
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Term
| X-ray diffraction photographs by Wilkins and Franklin suggested that... |
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Definition
| c. DNA molecules are arranged as a tightly coiled helix. |
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Term
| Watson and Crick built models that deomstrated that... |
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Definition
| b. the DNA helix is helf together by hydrogen bonds. |
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Term
| The base-pairing rules state that the following are base pairs in DNA: |
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Definition
| b. adenine--thymine; guanine--cytosine. |
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Term
| The attachment of nucleotides to form a complementary strand of DNA... |
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Definition
| a. is catalyzed by DNA polymerase. |
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Term
| During DNA replication, a complementary strand of DNA is made for each original DNA strand. Thus, if a proportion of the orginal strand is CCTAGCT, then the new strand will be. |
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Definition
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Term
| The enzymes responsible for adding nucleotides to the expposed DNA template bases are... |
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Definition
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Term
| In order to fit within a cell, DNA becomes more compact by... |
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Definition
| c. wrapping tightly around associated proteins. |
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Term
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Definition
| c. joined strands of duplicated genetic material. |
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Term
| A diplod cell is one that... |
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Definition
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Term
| How many chromosomes are in the body cells of an organism that has a haploid number of 8? |
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Definition
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Term
| The stage of the cell cycle that occupies most of teh cell's klife is... |
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Definition
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Term
| The phase of mitosis that is characterized by the arrangement of all chromosomes along the equator of the cell is called. |
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Definition
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Term
Refer to the illustration above. The cell in diagram "1" in...
Number 34 |
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Definition
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Term
Refer to the illustration above. Mitosis begins with the stage shown in the diagram....
Number 35 |
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Definition
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Term
Refer to the illustation above. The cell shown in diagram "5" is in...
Number 36 |
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Definition
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Term
| A typical human cell contains 46 chromosomes. After mitois and cell division, each of the two new cells formed from the original cell... |
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Definition
| c. gets a complete set of 46 chromosomes. |
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Term
| As a result of mitosis, each of the two new cells produced from the original cell during cytokinesis... |
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Definition
| b. recieves an exact copy of all of the chromosomes present in the original cell. |
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Term
Refer to the illustrationa bove. Which of the following correctly indicates the order in which these events occur?
Number 39 |
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Definition
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Term
| Seperation of homologues occurs during... |
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Definition
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Term
| The difference between anaphase of mitosis and anaphase I of meios is that... |
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Definition
| c. Chromatids do not seperate at the centromere in anaphase I. |
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Term
Refer to the illustration above. Which of the cells will be a diploid cell at the complete of division?
Number 42 |
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Definition
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Term
Refer to the illustration above. Which of these cells is in the process of the dividing to form gametes?
Number 43 |
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Definition
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Term
| When crossing-over takes place, chromosomes.... |
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Definition
| d. exchange corresponging segments of DNA. |
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Term
| Collectively, the time spend in G1+s+G2 is called ________. |
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Definition
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Term
| "Cables" made of microtubules that extend from the poles of a cell to the centromeres during cell division are called ______. |
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Definition
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Term
| In mitosis, anaphase follows ________. |
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Definition
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Term
| Chromosomes coil up into chort, fat rods during _______________. |
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Definition
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Term
| The stage of meiosis during which homologues line up along the equator of the cell is called _________________. |
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Definition
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Term
| The procells called ___________ guarentees that the number of chromosomes in gametes is half the number of chromosomes in body cells. |
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Definition
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| A reciprocal exchange of corresponding segments of DNA is called ___________. |
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Definition
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