8 In an osmosis experiment‚ four potato strips‚ each 5 cm in length‚ were left in salt solutions of different concentrations. The table shows the lengths of the strips after 30 minutes. Which salt solution was the most concentrated? 1 2 3 4 length of strips after salt solution 30 minutes A 4.5 cm B 4.8 cm C 5.0 cm D 5.3 cm Q) Use this diagram‚ which shows a cross-section through a leaf‚ to answer questions 14 and 15. 14 Which cell type absorbs the most carbon dioxide during the
Premium Carbon dioxide Cell Oxygen
(1987) Rapid assessment of stress effects on plant leaves by chlorophyll Schreiber U‚ Bilger W‚ Neubauer C (1997) Photosynthesis: a comprehensive treatise. Cambridge University Press‚ Cambridge‚ pp 320–336 Semenov IN‚ Perfilova IL (2000) Chemistry ( in Russian – Khimiya). Khimizdat‚ SPb.‚ P 656 Shabalin II‚ Petrova LP (1969) Comparison of absorption spectra measured in different devices SP-4. (in Russian). Zavodskaya Lab 30:551–552 Shaklee KL‚ Rowe JE (1970) Wavelength modulation spectrometer for studying
Premium Spectroscopy Electromagnetic radiation
Graphing Practice Name ___RaeAnne Phillips________________________________ Date __________ ▪ Save this file as a WORD document with a new name (LastNameGraph1) ▪ Use Create a Graph (http://nces.ed.gov/nceskids/graphing/) to graph the following data sets. ▪ Copy and paste the graphs AFTER each data set. ▪ Answer the questions AFTER each graph. ▪ Save Frequently! ▪ Email me (mruthenberg@findlaycityschools.org) the finished document. 1. Baby chickens‚ like all baby birds‚ require a constant
Premium Plant morphology Seed Chicken
tissue‚ that an ecosystem produces over a period of time. | FLORA cattails‚ bulrushes‚ sedges‚ Arrowhead‚ Water Lilies (Yellow and White‚ Blue Flag‚ and ’floaters’ like Common Duckweed. Not so easily seen are the submergent plants like pondweed and Canada Waterweed. White Water Lily. | | Arrowhead | | wetlands are also at risk because of non-native‚ invasive plants such as Purple Loosestrife and the Common Reed. Low shrub cover composed mostly of Leatherleaf with smaller
Premium Wetland
completely alike. For that I have examined and compared human cheek cells to Elodea leaf cells. First‚ I’ve scraped the inside of my cheek with the end of a swab stick to collect the cells then I’ve prepared them on a clean glass slide. When everything was set up I’ve observed the specimen at low‚ medium and high magnification‚ drawing a diagram for the high magnification one. Afterwards I’ve arranged the slide with the piece of Elodea leaf on the microscope stage and observed the cells in it at low and
Premium Cell Microscope Cell wall
described the food habit of the fishes. Some fishes feed directly on plants (eg: phytoplankton or pondweeds or both) and some fishes fed on other animals‚ where the word of ‘’predator’’ usually implies on them (Shelby D. Gerking‚ 1994). However‚ Shelby D. Gerking (1994) also state that some fishes prefer phytoplankton and zooplankton (eg: plankton predator) and benthic predator more prefer pondweed and invertebrates living on the bottom as their nourishment. These show that food habits of the fishes
Premium Plant Animal Algae
particular. The result of physiochemical and microbiological tests carried out on fish and sixteen water samples taken from Iddo in Apapa Local Government of Lagos State‚ Nigeria revealed pollution. E‚coli‚ Proteus sp.‚ Enterobacter sp.‚ Aeromonas sp.‚ Klebsiella sp.‚ and Salmonella sp. were isolated microorganisms identified in the samples. The quantity of Total Solid (802-2711ppm)‚ Dissolved Solids (550-1990ppm)‚ Biochemical Oxygen Demand (59-140ppm)‚ Level of conductivity (120-500µS)‚ colour (5-
Premium Water Lagos Sewage treatment
2.3.1 Organelle Structure and function nucleus enclosed in double membrane with pores contains chromosomes with genes made of DNA to control protein synthesis ribosomes made of RNA and protein free in cytoplasm or attached to RER site of protein synthesis rough endoplasmic reticulum interconnected sacs with ribosomes attached transport proteins to other parts of cell smooth endoplasmic reticulum synthesis of lipids and steroids mitochondria double
Premium Cell DNA Carbon dioxide
boxes represent various trophic levels. Which box represents herbivores? 6 The following diagram represents part of a food web for a fresh pond. Which organism is a primary consumer? A pond snails B pondweed C water beetles D water mites 7 The diagram below represents a food web. If producer 1 is suddenly completely wiped out by disease‚ what would be the most likely effect on the other organisms in the
Premium Trophic level Food chain Ecosystem
cellular structure of prokaryotes and eukaryotes include the presence of mitochondria and chloroplasts‚ the cell wall‚ and the structure of chromosomal DNA. In this lab four cells were observed and they were Onion Epidermis Cell stained with Iodine‚ Elodea Freshwater Plant Cell‚ Epithelial Cells aka Human Cheek cells stained with Crystal Violet‚ and Unknown Cell. The difference between animal and plants cells is that animal cells does not have a cell wall or chloroplasts but plant cells do. Animal cells
Premium Cell DNA Eukaryote