SLCC Human Bio Mitosis, Meiosis, and Cancer

If a muscle cell of an organism has 32 chromosomes, how many chromosomes will be in each of its gametes?

16

Which cell stages have checkpoints?

G1, G2, and M phase (metaphase)

Separation of sister chromatids occurs at which stages of mitosis and meiosis?

anaphase and anaphase 2

The mitotic spindles arise from which cell structure?

centrosomes

At prophase 1, homologous chromosomes are connected only at what structures?

chiasmata

A diploid cell has (blank) the number of chromosomes of a haploid cell.

twice

Uncoiling of the chromosomes and formation of a new nuclear envelope is typical of which stage in mitosis?

telophase

Bacterial cells have (blank) chromosome(s).

1

What is the main prerequisite for clearance at the G2 checkpoint?

Accurate and complete nuclear DNA replication

At which stage of meiosis are sister chromatids separated from each other?

Anaphase 2

Which of these statements is false?

At sexual maturity, ovaries and testes produce diploid gametes by meiosis.

Which protein is a positive cell cycle regulator that phosphorylates other proteins when it is activated by another protein?

Cyclin-dependent kinase (Cdk)

There are six hallmarks of cancerous cells. List as many as you can below.

Overgrowth in the cell, Cells multiplying at a rapid pace, Cells not having enough nutrients to fight off mutation, enabling replicative immortality, evading growth suppressors, resisting cell death.

Which negative cell cycle regulator can trigger apoptosis if cell cycle events do not occur correctly?

P53

When is DNA replicated before mitosis?

S phase

An organism's traits are determined by a specific combination of inherited (blank).

genes

Crossing over occurs between (blank).

non-sister chromatids