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B2.1

Cells, Tissues and Organs

QuestionAnswer
are human cells the same as animal cells? basically. both have nucleus, cytoplasm, cell membrane, mitochondria and ribosomes
how do plant and algal cells differ from animal cells? plant and algal cells have all animal features, with a cell wall. Some plant cells have chloroplasts and a permanent vacuole.
what are bacterial cells like? consists of cytoplasm and a membrane surrounded by a cell wall. the genes are not in a distinct nucleus
how are yeast cells unique? single-celled organism. each cell has a nucleus, cytoplasm and membrane surrounded by a cell wall
what are plasmids? small circular bits of DNA
why do bacteria cells have flagellum to induce movement.
how do yeast reproduce? asexual budding
3 features of a fat cell small amount of cytoplasm few mitochondria expandable
3 features of a cone cell outer segment has a visual pigment middle segment full of mitochondria specialized synapse connected to optic nerve
2 features of root hair cells hairs increase surface area large permanent vacuole to speed up osmosis
4 features of a sperm cell long tail middle section full of mitochondria acrosome stores digestive enzymes large nucleus
why are cells specialized? carry out a specific function
what is diffusion? net movement of particles from an area where they are at a high concentration to an area where they are at a low concentration.
what affects the rate of diffusion? the greater the difference in concentration, the faster the rate of diffusion
what is concentration gradient difference in concentration
what is a tissue? a tissue is a group of cells with similar structure and function
what is an organ? organs are made of tissues. one organ may contain several types of tissues.
what are organ systems? groups of organs that perform a particular function
examples of organ system in an animal digestive, respiratory, circulatory, etc...
3 plant organs stems, roots and leaves
Created by: duane.humphreys
 

 



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