Biology

Biology, 15.10.2019 23:30, lberries08

Found only in plant cells; supports and protects the cell; gives it a square shape

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Biology, 05.07.2019 04:00, beverly9662

:1. despite differences in size and shape, all cells have dna and a: a- cell wall b- mitochondria c- cell membrane d- nucleus 2. which of the following is not a part of the cell theory? a- all cells contain a nucleus. b- cells are the basic unit of structure and function in an organism. c- all living things are made of cells. d- new cells are produced from existing cells. 3. when using a light microscope to view a cell she obtained from scraping under her fingernails, mrs. smith notices that the cell lacks a nucleus; therefore, mrs. smith concludes that the cell must be a type of cell. a- animal b- plant c- eukaryotic d- prokaryotic 4. which of the following kinds of cell perform basic functions such as obtaining energy from food? a- plant cells, but not animal cells b- animal cells, but not plant cells c- both plant cells and animal cells d- neither plant cells nor animal cells 5. which cell structures are sometimes found attached to the endoplasmic reticulum? a- chloroplasts b- ribosomes c- nuclei d- mitochondria

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Biology, 17.10.2019 22:00, kyracrapse121

Generally all (animal) cells have different shapes because they do different things. each cell type has a specific role which it has to play in order to assist the body in working efficiently and functionally. thus their shape supports them to carry out these roles effectively. plant cells are not necessarily square, but they due tend to have distinct edges and be somewhat rectangular. this structure is caused by the cell wall which is very rigid and therefore forces the cell to have a defined shape. while plant and animal cells have structural similarities, they also differ in a few ways, including in shape. plant cells tend to be rectangular and have distinct edges, while animal cells vary widely in shape and tend to have rounder, more fluid edges. which statement best elaborates on the reason for this difference? a) animal cells have rounded edges because they contain cell walls, while rigid plant cells do not need cell walls. b) rectangular shapes plants absorb sunlight during photosynthesis, and round shapes animal cells absorb oxygen. c) animal cells vary in shape because they have different functions, while plant cells are rigid to plants grow upright.

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Biology, 28.10.2019 06:31, fatherbamboo

Which plant organelle supports and maintains the cells shape and protects the cell from damage

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Found only in plant cells; supports and protects the cell; gives it a square shape...

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