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WorksheetsChapter 7 Bio
Total questions: 22
Worksheet time: 22mins
2 Steps of protein synthesis:
(a)
Information encoded in a specific region of DNA is copied to produce a specific molecule of RNA ; this occurs in the nucleus
(a)
The RNA then attaches to a ribosome in the Rough ER, where the information contained in the RNA is translated to form a new protein.
(a)
Contain the same traits, but not the same version, which is why we look similar to our parents but not identical, we have 46 of them
(a)
Somatic Cell Division
(a)
Reproductive Cell Division
(a)
Phase before Cell Division Mitosis
(a)
Not a static stage
cell prepares for reproducing itself
DNA replication, cytoplasm growth
Longest phase of cell cycle
(a)
Cell division that results in production of two daughter cells, which have identical DNA as the parent cell
(a)
(before phase)
cell receives the signal that it is time to divide.
First, the cell has to get everything ready.
DNA is duplicated (which happens during interphase), certain organelles move to the right position, centrioles move to the opposite poles
The nuclear envelope falls apart and eventually disappears
(a)
(position changing phase)
The DNA lines up along the central axis and the centrioles send out specialized tubules that connect to the DNA. The DNA has now condensed into chromosomes.Two strands of chromosomes are connected at the center with a centromere.
(a)
Apart or action phase
The separation begins. half of the chromosomes are pulled to one side of the cell; half go the other way.
(a)
End phase
This is the time when the cell membrane closes in and begins to split the cell into two pieces. there are now two separate cells each with identical DNA as the parent cell
(a)
Final division of cells cytoplasm and organelles into 2 identical cells
(a)
Meiosis occurs in (a) successive stages
(a) results in four daughter cells which do no have identical DNA as the parent cell
Chromosome 11 damaged
(a)
Trisomy 21,
90% of all cases are due to are abnormal oocytes and is often times related to maternal age
(a)
inherited disorder with missing chloride pumps in plasma membrane leading to a buildup of thick mucus and difficulty breathing, digestive problems are also fairly common
(a)
inherited disorder that result from “leaky” membranes in the muscle cells -proteins leak out
(a)
abnormal mitotic division occurs, forming tumors
(a)
complete set of proteins synthesized by a cell
(a)
