The rate of cell division varies greatly in different types of human cells, the data table b- If you were asked to add one more cell that divides by meiosis to this data table. below shows the replacement rates of many types of human cells.
reproductive cell (ovary/testes)/sperm and egg
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Question 15 Analyze: Level 7-8 A pharmacist discovered a medicine for a certain bacteria that reproduces asexually, he tested this medicine and found it to be
โฆyes , since bacteria reproduce by asexual reproduction so all generations will be identical , same medicine will work for all bacteria
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boom
Lose 50 points!
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shark
Other team loses 10 points!
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fairy
Take points!
5
10
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25
lifesaver
Give 10 points!
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seesaw
Swap points!
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fairy
Take points!
5
10
15
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25
rocket
Go to first place!
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banana
Go to last place!
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b- By observing the human karyotype, suggest how to determine the gender (Male or female).
look at sex chromosomes xx =female Xy=male
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Question 12 Apply: Level 1-2 Why does the menstruation occur after the infertile phase?
to remove the broken endometrium and unfertilized eggs out of the body
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The rate of cell division varies greatly in different types of human cells, the data table below shows the replacement rates of many types of human cells.a- Which cell type has the shortest cell cycle?
lining of small intestine
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a. Solve: Some students were observing a diagram demonstrating the 2 types of cell division. How many cells are produced by the meiotic cell division (meiosis)?
โฆโฆโฆโฆโฆ4 cells
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gold
Win 50 points!
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gift
Win 20 points!
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banana
Go to last place!
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If you were given the number of the following nitrogenous bases in a DNA molecule (Adenine, thymine and Guanine), suggest how to find the number of cytosine bases in the same molecule.
same as guanine
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A biologist was examining the somatic cells of a newly discovered species of insects, he found 68 chromosomes in these cells, how many chromosomes will be found in the egg cells of this newly discovered species.