Which of These Statements Is False

question 41

Multiple Choice

Which of these statements is false?

• A) In humans, each of the 22 maternal autosomes has a homologous paternal chromosome.
• B) In humans, the 23rd pair, the sex chromosomes, determines whether the person is female (XX) or male (XY).
• C) Single, haploid (n) sets of chromosomes in ovum and sperm unite during fertilization, forming a diploid (2n), single-celled zygote.
• D) At sexual maturity, ovaries and testes produce diploid gametes by meiosis.
• E) Sexual life cycles differ with respect to the relative timing of meiosis and fertilization.

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Definitions:

Adenylyl Cyclase

Enzyme responsible for catalyzing the conversion of ATP to cyclic AMP (cAMP).

Protein Kinase

An enzyme that modifies other proteins by chemically adding phosphate groups, playing a crucial role in cellular signaling and function.

Endoplasmic Reticulum

A membranous network within cells that is involved in protein and lipid synthesis, transport, and detoxification processes, existing in two forms: rough and smooth.

Calcium Ions

Positively charged calcium atoms (Ca2+) that play essential roles in biological processes like bone formation, muscle contraction, and blood clotting.