What links the urea cycle and the citric acid cycle? Explain
What will be an ideal response?
Answer: There are four stages in urea cycle. 1) Transamination 2) Oxidative deamination of glutamate 3) Ammonia transport 4) Reactions of the urea cycle.
In urea cycle, one of the nitrogens came from Transamination of oxaloacetate to form aspartate. In third step of citric acid cycle, fumarate is produced which is an intermediate in citric acid cycle and return to that cycle.
In this way, urea cycle and citric acid cycle are get linked with each other.
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Two researchers suggested in the 1960s that ____ may have been the first informational molecule
a. DNA b. a protein c. RNA d. ozone e. an amino acid
What would be TRUE if linkage of two genes was complete?
A) The genes would assort independently. B) All possible combinations of alleles in the gametes would be produced. C) All possible combinations of alleles in the offspring would be produced. D) Crossing over between the two genes would rarely occur.
Assume that an organism has a haploid chromosome number of 7. There would be ________ chromosomes in a monoploid individual of that species
A) 3.5 B) 42 C) 7 D) 28 E) 14
Which gas is used by plants to produce molecules that make up plant structures?
A) oxygen B) methane C) chlorophyll D) carbon dioxide E) NADPH