Hello I really need help with these BIO-1 questions. Could you guys please answe

Question

Hello I really need help with these BIO-1 questions. Could you guys please answer all of the multiple choice questions. I know it seems like a lot but i would highly appreciate it becuase i really need help on them. Thank you guys! I truly appreciate it.

38. Pyruvate is completely oxidized by pyruvate oxidation (to acetyl CoA) followed by the citric acid cycle. Six carbons of glucose reside in two pyruvate molecules at the end of glycolysis and are ultimately eliminated during pyruvate oxidation and citric acid cycle in the form of A. Methane B. Ethanol C. Lactic acid D. Carbon dioxide E. Carbon monoxide 39. The nontemplate strand of a portion of a gene reads 5-TTCACTGGTTCA. What is the sequence of the resulting transcript for this portion? A. 5-AAGUGACCAAGU B. 5'-UGAACCAGUGAA C. 5-UUCACUGGUUCA D. 5'-ACUUGGUCACTT 40. Consider the replication bubble shown below. Which letters represent leading strands? L M 5 3- 3' 5' N O A. L and M B. N and O C. L and O D. M and N E. L and N

Explanation / Answer

Ans 38

The final end product of Citric acid cycle is carbon dioxide. One molecule of glucose is converted finally to 6 molecules of carbon dioxide. Ans is option D

Ans 39.

Transcription follows the rules of complementary base pairing

Template base Transcribed strand base

Adenine. Uracil

Thymine. Adenine

Cytosine. Guanine

Guanine. Cytosine

Hence by applying this rule, answer is option A.

Ans 40.

The leading template shows polarity of 3' - 5'.

Hence the leading strand is antiparallel to the leading template. It follows polarity of 5'- 3'. So, in the given replication bubble, N and O represent the leading strand as it is complementary to the leading template 3' -. 5'. Ans is Option B.

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