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39 Cards in this Set
- Front
- Back
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How do you know if something is living? |
If it has movement, growth, sensitivity, reproduction, nutrition, respiration, synthesis, and excretes |
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What are the characteristics of life? |
Movement, growth, sensitivity, reproduction, nutrition, respiration, synthesis, and excretion |
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What do living things need? |
energy, water, gases, living space, proper temperature |
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What are living things made of? |
carbohydrates, lipids, protiens, ATP, and nucleic acid |
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What is the cell theory? |
1. Living things are made of one or more cells 2. A cell is a basic unit of life 3. Cells can only come from cells |
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Who contributed to the cell theory? |
Hooke, Schwann, Virchow, Leeuwenhoek, Schleiden |
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Why are cells so small? |
Because if volume gets to large, then surface area cannot keep up with nutrient absorption and waste removal |
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What does cell mean? |
"little room" |
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What is the surface area to volume ratio? |
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What is the function of the mitochondria? |
produces energy currency of the cell, known as the powerhouse of the cell |
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What is the function of the cell wall? |
preventing over expansion when water enters the cell |
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What is the function of the vacuole? |
storage,disposal |
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What is the function of the cell membrane? |
movement of cells in and out, protect its surroundings |
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What is the function of the of the nucleus? |
to take care of gene expression and meditate the rep |
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What is the function of the nucleolus? |
rewrite RNA |
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What is the function of the chromosomes? |
DNA, instructions |
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What is the function of the ER? |
folding of protein molecules, moves materials |
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What is the function of the ribosomes? |
makes protiens |
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What is the function of the lysosomes? |
digest food or break down cell when it dies, holds enzymes |
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What is the difference between animal cells and plant cells? |
plants have cell wall and chlorloplats animal cells dont |
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What is endocytosis? |
the taking in of matter by a living cell by invagination of its membrane to form a vacuole |
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What is exocytosis? |
a process by which the contents of a cell vacuole are released to the exterior through fusion of the vacuole membrane with the cell membrane |
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What is permeable? |
membrane that allows materials to pass throughout it |
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What is semi-permeable? |
membrane that allows some materials to pass through it-not all *cell |
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What is impermeable? |
membrane that doesn't let anything pass through it. |
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What is osmosis? |
diffusion of water |
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What is diffusion? |
a process by which the contents of a cell vacuole are released to the exterior through fusion of the vacuole membrane with the cell membrane |
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What is the difference between osmosis and diffusion? |
diffusion refers to the movement of any chemical from one place to another, whereas osmosis exclusively refers to the movement of water across a membrane. |
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What is active transport? |
little pores in membrane, high to low concretion ex:osmosis |
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What is passive transport? |
move trough with help from carrier molecules ex:exocytosis |
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What is the formula for photosynthesis? |
6 CO2 +6 H2O + sunlight ->C6H12 O6 +6 O2 |
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What is the formula for respiration? |
C6H12O6 +6 O2 ->6 CO2 +6H2O +ATP |
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Where do photosynthesis and respiration occur in a cell? |
photosynthesis occurs in the chloroplast respiration occurs in mitochondria |
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What happens in a plant cell? |
photosynthesis |
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What organelles do plants use for energy? |
chlorloplast |
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What are the steps to the scientific method? |
chloroplast |
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What is the difference between observations and inferences? |
question, hypothesis, experiment, research, conclusion, data |
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What are the parts of a microscope? |
occular, body tube, diaphragm, illuminator, base, arm, revolving noise piece, stage, stage clips, fine adjusting knob, coarse adjusting knob, scanner, low, high, |
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What are differences between prokaryotic cells and eukaryotic cells? |
bacteria and archea |
