biology flashcards i guess

leggy eggy
Flashcards by leggy eggy, updated more than 1 year ago
leggy eggy
Created by leggy eggy about 5 years ago
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biology flashcards i guess

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Question Answer
what are enzymes? - biological catalysts - increase the rate of metabolic reactions - proteins made of long chains of amino acids formed in unique shapes so that they can only speed up one specific reaction
Why do plants need phosphates? - For making DNA - For making cell membranes - For respiration and growth
Why do plants need nitrates? - To make amino acids and proteins for cell growth
Why do plants need potassium? - Helps enzymes needed for respiration and photosynthesis
Why do plants need magnesium? - Makes chlorophyll for photosynthesis
What are some examples of greenhouse gases? - Carbon dioxide - Methane - Nitrous Oxide - CFCs
When is mitosis used? - Growth - Repair - Cloning - Asexual reproduction
Proteins contain atoms of which elements? - Carbon - Nitrogen - Hydrogen - Oxygen
Carbohydrates contain atoms of which elements? - Carbon - Hydrogen - Oxygen
Where is bile produced and stored? - Produced in the liver - Stored in the gall bladder
What are the functions of bile? - Neutralises stomach acid - Emulsifies fats
How are some plants adapted for insect pollination? - Bright petals - Strong scent - Nectar - Big sticky pollen grains - Sticky stigma
What is the word for things relating to the lungs? -Pulmonary
What is the word for things relating to the heart? - Coronary
What is the word for things relating to the liver? - Hepatic
What is the word for things relating to the kidneys? - Renal
What are the three main roles of the kidneys? - Removal of urea from the blood - Adjustment of salt levels in the blood - Adjustment of water content in the blood
What is a positive phototropism? - Plants growing towards light
What is a positive geotropism? - Plants growing towards gravity
Which substance is used to test for starch? - Iodine solution
What substance is used to test for glucose? - (blue) Benedict's reagent
Which digestive enzyme converts starch into maltose? - Amylase
What do lipases convert lipids into? - Glycerol and fatty acids
What is another word for the gut? - The alimentary canal
What is the name for the process that moves food through the gut? How does it work? - Peristalsis - The muscles of the gut contract and squeeze the food along
Why does the stomach produce hydrochloric acid? - To kill bacteria - To give the right pH for the enzyme protease
Which organisms have cell walls? - Plants - Fungi - Bacteria - (some) Protoctists
What are alleles? - Different versions of the same gene
Why does the left ventricle have a thicker wall than the right ventricle? - It must pump blood around the whole body so it needs more muscle - The right ventricle only has to pump blood to the lungs
What are the structural differences between veins and arteries? - Veins have thinner walls - Arteries have a smaller lumen - Veins have valves to prevent backflow
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