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1. Specify the location and function of the centromere.The centromere is a region of a eukaryotic chromosome where the kinetochore is assembled thus; it is the site where spindle fibers of the mitotic spindle attach to the chromosome during mitosis. (Centromeres are highly complex chromosomal substructures involved in essential aspects of chromosome transmission during cell division.)
a) Name the three types of chromosomes found in human cells based on the location of the centromere.The centromeres can be found in the middle of the chromosome (median), near one end (acrocentric) or in between these first two (submedian). Chromosomes are arranged into seven groups based on size and centromere location.Group A: chromosomes 1-3 are largest with median centromere;Group B: chromosomes 4-5 are large with submedian centromere; Group C: chromosomes 6-12 are medium sized with submedian centromere;Group D: chromosomes 13-15 are medium sized with acrocentric centromere;Group E: chromosomes 16-18 are short with median or submedian centromere;Group F: chromosomes 19-20 are short with median centromere;Group G: chromosomes 21-22 are very short with acrocentric centromere; chromosome X is similar to group C and Y is similar to group G.
b) Which type is not found in human cell?
Determine which of these would synthesize the enzymes for Histidine synthesis
plan the structure again (showing all bonds), and this time indicate the H bonding of dihydroxyacetone to water. Remember which atoms form H bonds -- you've seen this "rule" several times. Also, each (uncharged) oxygen atom participates in 2 H bon..
Studying and predicting results of experiment conducted with mutant mouse. A researcher recently found out a mutant mouse with an interesting T cell phenotype.
The integrity of the plasma membrane is essential for cellular survival. Could the immune system utilize this fact to destroy foreign cells that have invaded the body?What physical and metabolic constraints limit the cell size.
provide some information about the relationships between the intra -cellular compartments involved in the secretory and endocytic pathways,explain co-translational and post translational protein.
List two possible mutations that might cause this phenotype. Be as specific as possible about the location of mutation. What led physician to make this diagnosis, and what might have caused the sudden attack.
In some cases the first gene in the linear sequence appears to be transcribed at a much higher rate than the second and subsequent genes (as in many but not all mRNAs contain the sequences encoded by gene 2 and beyond).
Anika's cortisol secretion level falls to normal after the medication, but Bonnie's cortisol secretion remains elevated. Which patient has primary hypercortisolism, also called Cushing's syndrome?
The characteristic (trait) could be something like coloration pattern, length of the limbs, size of the teeth or beak, or any measurable trait that is inherited.
Why can prakaryotes quickly re infect a patient if they are not wiped out? How may this result in the evolution of drug resistant pathogens.
How various kilograms of diatoms are needed to build 1 metric ton (1000kg) of blue whale. Give details how filter feeding by blue whales enables them to grow so large.
Why is the amount of oxygen consumed so much greater than the amount require to oxidize the added oxaloacetate or malate completely.
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