Beyond water balance, Question 49 may have touched on the removal of nitrogenous wastes. The glomerulus filters blood, but essential substances like glucose, amino acids, and ions are selectively reabsorbed in the proximal convoluted tubule via active transport and facilitated diffusion. Urea, a toxic byproduct of protein metabolism, is partially reabsorbed but mostly excreted. Understanding this distinction is crucial: the kidney does not simply “remove everything”; it precisely regulates what stays and what leaves.
Break down other questions from the 2011 paper.
The most common exam systems using "CE" (Certificate of Education) are: ce bio 2011 ii q49
To answer this type of question correctly, you must understand why specific steps are taken:
(a) Determine the genotypes of I-1, I-2, II-3, and II-4. (b) If II-3 marries a normal male (no traits), what is the probability that their first son has ? (c) Explain why Trait B is never passed from father to son. Beyond water balance, Question 49 may have touched
Since albinism is a recessive trait, her genotype must be aa .
Individual I-1 has both traits. I-2 has neither trait. II-3 (female) has only Trait B. II-4 (male) has only Trait A. Understanding this distinction is crucial: the kidney does
An increase in the frequency of skin cancer is primarily caused by depletion of the ozone layer
He has a normal phenotype, but because they have an albino child ( aa ), he must have provided one 'a' allele. Therefore, his genotype is heterozygous Aa . The Cross (Aa x aa): The possible gametes from the father are A and a . The possible gametes from the mother are only a . The Probability: Possible offspring: Aa (Normal) and aa (Albino).