Biology unit 2

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Decision Flashcards on Biology unit 2, created by NikuNik on 20/04/2013.
NikuNik
Flashcards by NikuNik, updated more than 1 year ago
NikuNik
Created by NikuNik over 11 years ago
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Question Answer
is everyone's DNA unique?? no identical twins have the same
T or F: does meiosis form gametes T
What does DNA stand for. Deoxyribonucleic acid
At what temperature do enzymes work best?? 37.5*C
at what ph do enzymes work best? PH 6
Which enzyme breaks down starch? Amylase
lipase breaks down fats into what two things? Fatty acids + Glycerol
What are the two place that all 3 enzymes are produced? Pancreas + Small Intestine
what is stored in the gall bladder bile
why is bile important neutralises stomach acid to produce the optium ph
T or F: Pepsin works best in alkaline conditions False
What are the 3 types of animal tissue? Muscle, Glandular and Epithelial
what is the function of the xylem and phloem? to transport water, mineral ions and sucrose round the plant.
List 3 limiting factors of photosynthesis? Light, CO2 and temperature
what ions does a plant need to absorb from the soil to make protein?? nitrate ions
When a seedling begins to grow it is under ground and has no light where does it get its energy from?? Starch
name 3 environmental factors that effect plant distribution?? Any from: Temp, availability of water, light, nutrients and co2
define: Tissue a group of similar cells that work together to carry out a certain function.
define: Differentiaion the process by which cells become specialized to a particular job
define: habitat a place where an organism lives
What is the function of the small instestine? to absorb soluble foods
What is the function of the large instestine? to absorb water
define: enzyme biological catalysts
what happens in the cytoplasm? Most chemical reactions
What is the cell wall made of? cellulose
what do guard cells open and close? stomata
what shape are red blood cells? concave discs
True/False the liver produces bile? true
Cell membrane function Controls movement of substance in and out of cell
What does the nucleus contain Genetic material
what is in the vacuole cell sap
what are in chloroplasts chlorophll
what do ribosomes do protein synthesis
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