Question

whats the waste product of electrons and pyruvate combining in fermentation?
a) citric acid
b) lactic acid
c) sulfuric acid
d) oxalic acid
question 13 (5 points)
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what phase of mitosis involves the chromatids aligning in the center of the cell?
a) metaphase
b) prophase
c) anaphase
d) telophase

Explanation:

First Question (Waste Product in Fermentation)

In fermentation (e.g., lactic acid fermentation), pyruvate accepts electrons (from NADH, which is oxidized), and the product is lactic acid. Citric acid is in the Krebs cycle, sulfuric acid is not a fermentation waste, and oxalic acid is unrelated to this process.

Second Question (Mitosis Phase with Chromatids Aligning)

In mitosis, metaphase is defined by the alignment of sister chromatids (or chromosomes) at the cell's equatorial plate (center). Prophase involves chromatin condensation, anaphase is for chromatid separation, and telophase is for nuclear re - formation.

Answer:

B) Lactic acid