For question 1, the option is C. Though I don’t know what the answer for option 2 is.
Glycolysis. In glycolysis, glucose—a six-carbon sugar—undergoes a series of chemical transformations. In the end, it gets converted into two molecules of pyruvate, a three-carbon organic molecule.
The given statement is true.
The formation of continental glaciers takes place mainly high on the highest mountains, where the temperatures are very low constantly, therefore, permitting the snow and ice to consolidate and pile up. The glaciers are mainly witnessed between the mountains, and with their pressure and movement, they take part in the formation of valleys, which are even deeper in comparison to what they were initially witnessed.
Sneezing or coughing on foods, or exposing them to infected sores or cuts allows to <span>Staphylococcus aureus to contaminate the foods. A staphylococcus aureus is a round-shape bacteria that is a member of the Firmicutes, and is also frequently found the nose, on the skin, and respiratory tract.</span>
Missing options:
A) the formation of recombinant DNA
B) the synthesis of a different polypeptide
C) crossing-over
D) polyploidy
Answer:
B) the synthesis of a different polypeptide
Explanation:
The statement highlights a change in the codon sequence from UCG to UGC. If we look at the table of amino acids, we would realize that UCG encodes for "<u>Serine</u>" whereas UGC encodes for "Cysteine" amino acids. This single change in DNA sequence is known is <u>mutation</u> or <u>single nucleotide polymorphism (SNP)</u>. Finally, the change in amino acid will result in the synthesis of a different polypeptide which contians a different amino acids. See figure attached for codon table.