| CHAPTER 10.2 | CHAPTER 10.3 | CHAPTER 10.4 | CHAPTER 11.4 | BONUS QUESTIONS |
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In most prokaryotes, how many chromosomes hold most of the DNA?
IN ONE
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What does regulate means?
"To control or direct"
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Mention three types of specliazed cells.
Cells that store sugar
Transport materials & carry out photosynthesis |
Alleles of different genes tend to...
Be inherited from one generation to the next when the genes are located in the same chromosome.
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Which are the Levels of Organization in the living Environment?
Individual organism, Population, Community, Ecosystem, Biome and Biosphere.
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Why do cells go to such lengths to package their DNA into chromosomes?
To ensure equal division of DNA when a cell divides
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When an injury such a cut happens in the body, cells at the edges of the injury....
Are stimulated to divide rapidly.
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The human body contains an estimated of (number) cells
One hundred trllion
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A tetrad contains...
Four chromatids.
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What does transfer RNA do?
Carries aminoacids to the ribosome
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How many chromosomes does the human cell´s have?
46
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Are made from an important external regulatory protein.
Growth factors
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The process of differenciation determines the cell´s...
Ultimate identity
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Does the daughter cells in meiosis have the same sets of chromosomes of the diploid cells on the original cell?
NO.
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What is an operon?
A group of genes that are regulated together
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Name phases of cell division
On interphase: GI PHASE, S PHASE, G2 PHASE
On cell division: M PHASE (MITOSIS AND CYTOKYNESIS) |
They cause to slow down or speed up the cell cycles.
Growth factors
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Can adult´s cells become other types of cells? Give a reason why/why not.
No
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Both ensure that cells inherit genetic information:
Mitosis & Meiosis
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Are heritable changes in genetic information:
Mutations
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The prefix cyto derives from the Greek word "kytos", meaning:
"A hollow vessel"
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Melanomas can be removed by....
A small surgery
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What can multipotent cells do?
They can become other type of cells but in a limited way
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In which meiosis stage does the crossing - over takes place?
On the Prophase I
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Is read three "leters" at a time:
The genetic code
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