IB Bio Test 11/20/15

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transport, enzymatic activity, signal transduction, cell-cell recognition, intercellular joining, and attachment to the cytoskeleton
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Terms in this set (11)
transport, enzymatic activity, signal transduction, cell-cell recognition, intercellular joining, and attachment to the cytoskeleton
Functions of membrane proteins
keep membrane fluid consistent
role of cholesterol
facilitated diffusion
passive transport of molecules or ions across a membrane via integral proteins
endocytosis
taking in of matter by invagination of its membrane to form a vacuole
exocytosis
contents of cell vacuole are released to exterior through fusion of vacuole membrane with the cell membrane
1. animal cells do not have a cell wall and have an irregular shape, plant cells have a cell wall and are regular in shape. 2. animal cells do not have a chloroplast. 3. animal cells have a small temporary vacuoles or no vacuole while plant cells have large vacuoles located in the center of the cell. 4. animal cell- nucleus is usually centrally located, plant cell- due to center location of vacuole nucleus may be located on the edge of the cell
differences between plant and animal cells
1. prokaryotic cells do not contain a nucleus. 2. prokaryotic cells do not contain membrane-bound organelles. 3. prokaryotic cells do not have a mitochondria. 4. Eukaryotic cells are usually multicellular while prokaryotic cells are usually unicellular
differences between prokaryotic and eukaryotic cells
nutrition: ingest and digest small organisms through vesicles, growth: nutrients from digestion are used to provide energy and materials for growth, excretion: waste products from metabolism are expelled through diffusion, response: paramecium moves toward or away from external stimuli therefore responding to environment, metabolism: contains enzymes in cytoplasm that catalyze the metabolic reactions, reproduction: asexual and sexual, homeostasis: fill up with water and remove this water maintaining balance
functions of life in a paramecium
Reproduce, Response (to environment), Growth, Excretion, Metabolism, Nutrition, Homeostasis
7 functions of life
nutrition: chloroplast produces food through photosynthesis, growth: grows through absorption of materials and photosynthesis,excretion: expelled through diffusion, response: eyespot that can detect the brightest light moves toward light stimuli and is able to respond to environment, metabolism: contains enzymes that catalyze metabolic reactions, homeostasis: vacuoles fill up with water and expel this water
functions of life in chlamydomona
1. all living organisms come from cells. 2. the cell is the basic unit of structure and organization in organisms. 3. cells come from preexisting cellscell theory