Question

In: Biology

36) The majority of homeostatic processes in the human bodywork on the principle of positive feedback...

36) The majority of homeostatic processes in the human bodywork on the principle of positive feedback control (T / F)

37) Photosynthesis is not an example of an oxidation-reduction reaction

39) Which type of population age structure diagram is associated with low juvenile mortality and low reproductives rates?

40) Which organ system produces developmental hormones?

42) If one parent is heterozygous for a gene and the other parent is homozygous recessives for the same gene, what is the chance that they have a child showing the recessive form of the gene in their phenotype?

Solutions

Expert Solution

Q36) The statement is False. The homeostasis processes in the human body work by negative feedback loop to control the overall body maintenance. Positive feedback control tends to bring body out of homeostasis.

Q37) The statement is False. Photosynthesis is a redox reaction in which Water is oxidized to Oxygen and Carbondioxide is reduced to carbohydrates.

Q39) Urn-shaped age pyramid (constrictive pyramid) is the characteristic of population with low juvenile mortality and low reproductive rates. in such a pyramid, the pre-reproductive age group is smaller in size and as such the population tends to decline over a period of time.

Q40) Endocrine system of body is responsible for production of developmental hormones. Endocrine system is composed of many glands which secrete various hormones and these hormones play important role in overall growth and development of an organism.

Q41) Consider a heterozygous parent (Aa) and homozygous recessive parent (aa)

Aa x aa

Gametes ----> A a a

Offsprings -----> Aa aa  

Therefore there are 50% chances that they have a child showing the recessive form of gene in their phenotype.

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