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Biology
Posted 8 months ago
you had a plate of rice rice for lunch discuss the process of conversation of rice for the production of energy
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Answer from Sia
Posted 8 months ago
1 Answer
Sister chromatids are present during the entire G2 phase of the cell cycle.
Solution
a
Sister chromatid formation: Sister chromatids are formed during the S phase of the cell cycle when DNA replication occurs
b
Presence in G2 phase: After their formation, sister chromatids remain joined together throughout the G2 phase, which follows the S phase
Key Concept
Sister chromatids in G2 phase
Explanation
Sister chromatids are present throughout the G2 phase as the cell prepares for mitosis.
2 Answer
Serum can be collected from blood by allowing clotting and then centrifuging the sample.
Solution
a
Blood clotting: Blood is collected and allowed to clot, which separates the blood cells from the liquid component
b
Centrifugation: The clotted blood is then centrifuged to separate the serum from the clot
Key Concept
Serum collection
Explanation
Serum is the liquid part of blood that remains after clotting and centrifugation, devoid of cells and clotting factors.
3 Answer
The order of producing recombinant insulin involves gene insertion, host cell transformation, cell culture, and protein purification.
Solution
a
Gene insertion: The insulin gene is inserted into a plasmid vector
b
Host cell transformation: The plasmid is introduced into a host cell, typically a bacterium like E. coli
c
Cell culture: Transformed host cells are cultured to produce insulin
d
Protein purification: Insulin is extracted and purified from the culture
Key Concept
Recombinant insulin production
Explanation
Recombinant insulin is produced by inserting the human insulin gene into bacteria, which then express the insulin protein.
4 Answer
Possible reasons for osteoporosis despite adequate calcium intake include vitamin D deficiency, hormonal imbalances, and genetic factors.
Solution
a
Vitamin D deficiency: Essential for calcium absorption, its deficiency can lead to osteoporosis
b
Hormonal imbalances: Imbalances in hormones like estrogen or testosterone can affect bone density
c
Genetic factors: Genetic predisposition can influence bone mass and susceptibility to osteoporosis
Key Concept
Osteoporosis causes
Explanation
Osteoporosis can occur despite adequate calcium intake due to other factors affecting bone metabolism and density.
5 Answer
Inhibition of the sympathetic nervous system generally leads to vasodilation and decreased blood vessel tone.
Solution
a
Sympathetic nervous system role: It typically causes vasoconstriction and increases blood vessel tone
b
Inhibition effects: Inhibition leads to reduced sympathetic stimulation, causing vasodilation and decreased tone
Key Concept
Sympathetic nervous system inhibition
Explanation
Inhibition of the sympathetic nervous system reduces its constrictive influence on blood vessels, leading to vasodilation.
Random Question Answer
The process of converting rice into energy involves digestion, glucose absorption, and cellular respiration.
Solution
a
Digestion: Rice is broken down into glucose during digestion in the gastrointestinal tract
b
Glucose absorption: Glucose is absorbed into the bloodstream through the intestinal walls
c
Cellular respiration: Glucose is used in cells to produce ATP, the energy currency of the cell, through cellular respiration
Key Concept
Energy production from rice
Explanation
Rice, a carbohydrate, is digested into glucose, which is then used by cells to produce ATP through cellular respiration.

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