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a) Explain how cell division and the sexual reproduction help in genetic variability of organism.
b) How do both the meiosis and sexual reproduction (fertilization) generate offspring which differ genetically from parents?
c) Describe two attributes of the enzymes in catalyzing the chemical reactions and in metabolic pathways like photosynthesis and aerobic cellular respiration.
d) Both photosynthesis and the aerobic cellular respiration are examples of the complex metabolic pathways, containing of several associated chemical reactions that need enzymes to function. Explain two features of enzymes in catalyzing chemical reactions and in metabolic pathways in detail.
What are the roles of plasmodesmata and aquaporins. In the presence of the galactose derivative 6-O-benzyl-D-galactose, the curve is shifted to the right. What variety of agent is 6-O-benzyl-D-galactose.
Describe how the cell derives additional energy by switching . What was the key factor that determined this change.
Those that live in tropical climates like the savannas of Africa are usually much smaller than the ones that live in arctic regions like Lapland.
Assume that there are 63 different naturally occurring amino acids. If all 64 possible combinations of bases for a codon resulted in coding for 63 different amino acids and one stop codon, which of the next mutations would NOT be possible.
Distinguish between mechanical advantages and disadvantages in lever systems and find out which kind of lever the doctor was using to test quadriceps muscle.
A student argued that this is too time-consuming as the complete amino acid sequence should be determined in order to create the probe. Does the student have a valid argument? Why or why not with reason.
Birds and mammals have a four-chambered heart, with two ventricles and two atria, but other modern reptiles have a three-chambered heart, with just one ventricle. Paleontologists debate whether dinosaurs had a typical "reptile-like" heart or a "birdl..
What is the function of the polymerase chain reaction (PCR) in genetic engineering? To cut DNA into many fragments.To carry DNA into a new cell.To make millions of copies of a specific segment of DNA.
List in order the higher taxons used in classification (domain, kingdom, phylum, genus, species) List the 3 domains and how they differ. Describe uses and effects of microbes for man.
Discover the signs and symptoms associated with acute appendicitis. Why is this condition potentially dangerous to the patient. Occurs when the segment of chromosomes breaks off and becomes reattached to another chromosome.
What is the phenotypic ratio you would expect to see in the F2 generation if you were following a sex-linked trait? An autosomal trait? Two autosomal dominant characters (dihybrid cross).
A researcher wants to develop a test that will distinguish charophytes and land plants from green algae. Which chemicals would be the best subject for such an assay.
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