Ohio Science Fusion - Unit 5 (Grade 8) PART 1

What is the definition of PROKARYOTE?

• An X-shaped structures in the nucleus that are made up of DNA and protein.

• The material that contains the information that determines traits.

• A single-celled organism that does not have a nucleus or membrane-bound organelles.

• An organism made up of cells that have a nucleus enclosed by a membrane.

What is the definition of EUKARYOTE?

• An X-shaped structures in the nucleus that are made up of DNA and protein.

• The material that contains the information that determines traits.

• A single-celled organism that does not have a nucleus or membrane-bound organelles.

• An organism made up of cells that have a nucleus enclosed by a membrane.

What is the definition of DNA?

• An X-shaped structures in the nucleus that are made up of DNA and protein.

• The material that contains the information that determines traits.

• A single-celled organism that does not have a nucleus or membrane-bound organelles.

• An organism made up of cells that have a nucleus enclosed by a membrane.

What is the definition of CHROMATIN?

• Threadlike material of DNA that wraps around proteins.

• An X-shaped structures in the nucleus that are made up of DNA and protein.

• Two identical structures containing duplicated DNA.

• Holds together two chromatids.

What is the definition of CHROMOSOME?

• Threadlike material of DNA that wraps around proteins.

• An X-shaped structures in the nucleus that are made up of DNA and protein.

• Two identical structures containing duplicated DNA.

• Holds together two chromatids.

What is the definition of CHROMATID?

• Threadlike material of DNA that wraps around proteins.

• An X-shaped structures in the nucleus that are made up of DNA and protein.

• Two identical structures containing duplicated DNA.

• Holds together two chromatids.

What is the definition of CENTROMERE?

• Threadlike material of DNA that wraps around proteins.

• An X-shaped structures in the nucleus that are made up of DNA and protein.

• Two identical structures containing duplicated DNA.

• Holds together two chromatids.

What is the definition of CELL CYCLE?

• The division of the cytoplasm of a cell; cytokinesis follows the division of the cell's nucleus by mitosis or meiosis.

• In eukaryotic cells, a process of cell division that forms two new nuclei, each of which has the same number of chromosomes.

• The life cycle of a cell; can be divided into 3 stages.

• A process in cell division during which the number of chromosomes decreases to half the original number by two divisions of the nucleus, which results in the production of sex cells.

What is the definition of INTERPHASE?

• The period of the cell cycle during which activities such as cell growth and protein synthesis occur without visible signs of cell division.

• Chromosomes, each with two chromatids held together by centromere, condense.

• Chromosomes line up in middle of cell.

• Chromatids separate and pulled to opposite sides of cell, each with complete set of chromosomes.

What is the definition of PROPHASE?

• Nuclear membrane forms around group of chromosomes, cytokinesis begins.

• Chromosomes, each with two chromatids held together by centromere, condense.

• Chromosomes line up in middle of cell.

• Chromatids separate and pulled to opposite sides of cell, each with complete set of chromosomes.