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Unit 1 written study
Term | Definition |
---|---|
What happens to a cell during Apoptosis? | Cell suicide |
What happens to a cell during Necrosis? | Unplanned cell death. |
What are the levels of Organization? List simplest to most complex. | Simplest Subatomic particles Atoms: Molecules Macromolecules Organelles Cells Tissues Organs Organ systems Organisms |
Subatomic particles | are the pieces that come together to form an atom. Examples include: protons, neutrons, and electrons |
Atoms | small whole unit of an element, example: hydrogen |
Molecules | 2 or more atoms that are chemically connected to each other, example water |
Macromolecules | very large molecules, example protein |
Organelles | the organs of a cell, example mitochondria |
Cells | the smallest whole unit of life, example myocyte, neuron |
Tissues | a group of cells working together, example epithelial |
Organs | a group of tissues working together, examples: heart and liver |
Organ systems | a group of organs working together, example: cardiovascular system |
Organisms | one live thing, example: plant, animal, fungi |
How are Benign and Malignant Tumors similar? | Both tumors are new growth and can kill you. |
What is unique about Malignant tumors? | It is fast growing and invasive, extending into surrounding tissue. It can also metastasis. May resemble a crab and is more likely to kill you than a benign tumor. |
Metastasis | When a cancer spreads to distant locations that it is not directly touching. |
What is unique about Benign tumors? | It doesn’t spread, looks like a lump, may interfere with the function of healthy tissue. |
Why can some atoms of the same element have different mass numbers? | This is because the number of neutrons can differ. Atoms of the same element that have different numbers of neutrons, and thus different mass numbers are called Isotopes. |
How do you find the atomic mass? | Protons + neutrons = atomic mass |
How do you find the atomic number? | The number of protons |
If an atom had 17 electrons, 17 protons and 18 neutrons: What is the atomic number? | 17 |
If an atom had 17 electrons, 17 protons and 18 neutrons: What is the atomic mass? | 35 |
If an atom had 17 electrons, 17 protons and 18 neutrons: How many electrons would you put in each shell? | Shell 1: 2 in can hold 2 Shell 2: 8 in can hold 8 Shell 3: 7 in can hold 8 |
what are the ranges of the p.h scale? | ranges from 0-14 ph of 7 means neutral ph below 7 is acidic ph above 7 is basic. |
Explain Mitosis. | constitutes a form of cell division that occurs in somatic (nonsex) cells and produces two daughter cells from an original cell. These new cells are genetically identical. Each new cell has the full complement of 46 chromosomes. |
Explain Meiosis | is a second form of cell division that occurs only in the cells that give rise to sex cells (sperm and oocyte). Meiosis halves the chromosome number to 23. |
List the stages of Mitosis in order and describe what is happening during that stage? | Prophase= chromosome are becoming visible, nucleus is breaking down Metaphase= chromosomes meet in the middle of the cell. Anaphase= Chromosomes split apart and go to opposites of the cell Telophase= the cell begins to split into 2 sister cells. |
What are the differences between DNA and RNA? | DNA is double stranded RNA is single stranded DNA is a long-lasting molecule RNA is a short-lasting molecule DNA takes longer to make RNA takes shorter to create Dna in the nucleus RNA outside the nucleus DNA uses ATGC RNA uses AUGC |
nucleus | contains the genetic material (DNA) of the cell. |
Golgi apparatus | shipping and receiving (fed ex of the cell) |
Mitochondria | Powerplant of the cell |
Lysosomes | Garbage man of the cell, digest bacteria |
Cytoplasm | The jelly of the cell, everything between the nuclear membrane and the cellular membrane. |
Cytoskeletal | the bones of the cell |
Peroxisome | Makes hydrogen peroxide; kills germs; breaks down fats |
Rough Endoplasmic reticulum | Makes protein for the cell to export, like the GM of the cell |
Smooth Endoplasmic reticulum | detoxifies drugs, stores calcium |
Nucleolus | reads DNA and makes RNA |
Vacuole | bag of the cell |
Centriole | Backbone of cytoskeleton, has a role in cell reproduction |
Centrosome | two centrioles |
Cilia | moves substances along surface of the cell |
Flagella | moves cell |
Chromatin | dna + protein |
Cytosol | liquids of the cell |
Receptors | eyes and ears of the cell, allows it to respond to signals |
Channels | or carrier proteins allows substances to enter or exit the cell |
Vesicle | cellular bag |
Inclusion body | random pile of stuff in cell |