Chapter 3 Lesson 1 The Cell Cycle and Cell Division

Front

What are chromatids?

Back

Chromatids are two identical halves of a duplicated chromosome, joined together at a region called the centromere.

Front

What is the longest phase of the cell cycle?

Back

The longest phase of the cell cycle is interphase, during which the cell grows, duplicates its DNA, and prepares for division.

Front

What phase starts mitosis?

Back

The phase that starts mitosis is prophase, where the chromatin condenses into visible chromosomes and the nuclear envelope begins to break down.

Front

What are chromosomes made up of?

Back

Chromosomes are made up of two identical sister chromatids.

Front

Where does DNA synthesis occur in eukaryotic cells?

Back

DNA synthesis occurs in the nucleus of eukaryotic cells.

Front

What is the function of centrioles during cell division?

Back

Centrioles help organize the mitotic spindle and are involved in the separation of chromosomes during cell division.

Front

What happens during interphase?

Back

During interphase, the cell grows, performs its normal functions, and prepares for division by replicating its DNA.

Front

What is the role of the mitotic spindle?

Back

The mitotic spindle is a structure made of microtubules that segregates chromosomes into the daughter cells during mitosis.

Front

What occurs during prophase?

Back

During prophase, chromosomes condense, the nuclear envelope breaks down, and the mitotic spindle begins to form.

Front

What is the centromere?

Back

The centromere is the region of a chromosome where the two sister chromatids are joined together.