Cell Division and Chromosomes Quiz

Cells must first make a complete copy of their DNA before cell division

Chromosomes are condensed, organized structures of DNA that become visible during cell division.

Prokaryotic cells have a single, circular DNA molecule called a nucleoid that is not enclosed within a membrane-bound nucleus.

<p>histones</p> Signup and view all the answers

<p>Chromatin</p> Signup and view all the answers

<p>Chromatin is the combination of DNA and proteins called histones, which together form the building blocks of chromosomes.</p> Signup and view all the answers

<p>Chromatin condenses into chromosomes during cell division, specifically during the prophase stage of mitosis, which helps ensure proper distribution of genetic material to the daughter cells.</p> Signup and view all the answers

<p>Chromosomes are important for efficiently packing and organizing DNA within the nucleus, which helps ensure that DNA is replicated and distributed accurately during cell division.</p> Signup and view all the answers

<p>The cell cycle is the orderly sequence of events that take place in a cell from its formation to its division into two daughter cells. This cycle is crucial for growth, repair, and reproduction in all living organisms.</p> Signup and view all the answers

<p>The prokaryotic cell cycle involves a single, circular DNA molecule that replicates, followed by binary fission, where the cell divides into two identical daughter cells.</p> Signup and view all the answers

<p>The four stages of the eukaryotic cell cycle are G1, S, G2, and M.</p> Signup and view all the answers

<p>Interphase consists of G1, S, and G2.</p> Signup and view all the answers

<p>The “M phase” represents the mitotic phase of the cell cycle.</p> Signup and view all the answers

<p>During G1, the cell grows and carries out its normal metabolic activities.</p> Signup and view all the answers

<p>The two stages of the M phase are mitosis and cytokinesis.</p> Signup and view all the answers

<p>Mitosis is a process of nuclear division in eukaryotic cells where the replicated chromosomes are separated into two identical nuclei.</p> Signup and view all the answers

<p>Cytokinesis is the division of the cytoplasm of a cell into two daughter cells after mitosis.</p> Signup and view all the answers

<p>The four phases of mitosis are prophase, metaphase, anaphase, and telophase.</p> Signup and view all the answers

<p>During prophase, the replicated chromosomes condense and become visible as distinct structures. The nuclear envelope breaks down, and the spindle fibers begin to form.</p> Signup and view all the answers

<p>Centrioles are small, cylindrical structures found in animal cells that help organize the microtubules of the cytoskeleton, particularly during cell division.</p> Signup and view all the answers

<p>Sister chromatids are two identical copies of a replicated chromosome that are connected at the centromere, forming a pair of chromatids.</p> Signup and view all the answers

<p>Cytokinesis is the division of the cytoplasm into two daughter cells, physically separating the newly formed nuclei.</p> Signup and view all the answers

<p>In animal cells, cytokinesis occurs by a process known as cleavage furrow formation. A cleavage furrow is an indentation that gradually forms in the plasma membrane and eventually pinches off into two daughter cells</p> Signup and view all the answers

<p>In plant cells, cytokinesis occurs differently. Instead of a cleavage furrow, a cell plate forms at the middle of the parent cell between the divided nuclei, which eventually becomes the new cell wall separating the two daughter cells.</p> Signup and view all the answers

<p>centromere</p> Signup and view all the answers

<p>12</p> Signup and view all the answers

<p>cell plate</p> Signup and view all the answers