ACT Magoosh: Biology

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Across
  1. 1. - Structures located inside the nucleus of animal and plant cells. They contain most of the DNA of an organism.
  2. 3. - The process used by plants and other organisms to convert light energy (generally the sun), into sugars that can be converted into fuel for living things. Chlorophyll (the green pigment in plants) is essential in this process.
  3. 5. helix - the two stranded structure of DNA that coils around each other made up of nucleotides
  4. 7. - An individual’s collection of genes. This term can also mean the two alleles inherited for a particular gene.
  5. 11. - a type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell
  6. 14. - the movement of molecules through a semipermeable membrane from a less concentrated solution into a more concentrated one to cause equilibrium
  7. 16. - A form of a gene. Some genes have a variety of different forms.
  8. 17. - The building blocks for the double helix of DNA and RNA. In DNA, cytosine (C) always pairs with guanine (G) and thymine (T) always pairs with adenine (A).
  9. 19. - the transfer of pollen from the stamen (male reproductive organ) to the pistil (female reproductive organ) in plants to start the production of seeds
  10. 20. organism - a single-celled organism that lacks a nucleus
  11. 22. system - includes the organs that allow the body to breath and exchange oxygen and carbon dioxide throughout the body
  12. 23. - a molecule made up of nucleotides that acts as a messenger between DNA and ribosomes to make proteins
  13. 24. - the part of the cell division cycle in which the chromosomes in a cell’s nucleus are separated into two identical sets of chromosomes, and each set ends up in its own nucleus
Down
  1. 2. - A state change. In an insect or amphibian, the process of transformation from an immature form to a mature form.
  2. 4. - A region of DNA that acts as instructions to make proteins. They are important because they determine hereditary traits: each person has two copies of each gene, one from each parent.
  3. 6. acid - This stores hereditary biological information. These molecules carry the instructions for the development, functioning, and reproduction of all known living organisms and many viruses.
  4. 8. system - contains the organs and glands in the body that are responsible for the ingestion, digestion, and absorption of food
  5. 9. system - The network of organs and vessels responsible for the flow of blood, nutrients, hormones, oxygen, and other gases to and from cells in the body. Also goes by the name, “cardiovascular system.”
  6. 10. - an organelle found in most cells, where respiration and energy production occur
  7. 12. of cellular division - During interphase, the cell grows and makes a copy of its DNA. During the mitotic phase, the cell separates its DNA into two sets and divides its cytoplasm, forming two new cells. The mitotic phase is further divided into mitosis (the division of chromosomes in the nucleus) and cytokinesis (the division of the cytoplasm).
  8. 13. - An individual's observable trait, such as height, eye color, or hair color
  9. 15. and recessive traits - the inheritance patterns of certain traits, meaning how likely it is that a certain phenotype gets passed onto offspring
  10. 18. organism - an organism with a complex cell or cells
  11. 19. - Large molecules consisting of chains of amino acids. They do most of the work in a cell and are required for the function of the body’s tissues and organs.
  12. 21. - a complex machine found in all living cells that serves as the site where proteins are made