What is a tissue? - ANSWER a group of similar cells that work together to carry out a
particular function
What sort of tissue can you find in mammals? - ANSWER - Epithelial tissue: covers some parts of
the body, e.g. the inside and outside of the gut
- Muscular tissue: contracts to move whateve...
AQA GCSE Biology Exam | Questions
Answered 100% Correct
What is a tissue? - ANSWER a group of similar cells that work together to carry out a
particular function
What sort of tissue can you find in mammals? - ANSWER - Epithelial tissue: covers some parts of
the body, e.g. the inside and outside of the gut
- Muscular tissue: contracts to move whatever its attached to
- Glandular tissue: makes and secretes chemicals like hormones and enzymes
What is an organ? - ANSWER a group of different tissues that work together to perform
a certain function, e.g. stomach
What tissues are the stomach made up of and what are their purposes? - ANSWER - Epithelial
tissue: covers the inside and outside of the stomach
- Muscular tissue: contracts the stomach wall to churn up the food
- Glandular tissue: produces digestive juices to digest food
,What is an organ system? - ANSWER a group of organs working together to perform a particular
function, e.g. the digestive system breaks down food
What organs does the digestive system include? - ANSWER - glands
- the stomach
- the liver
- the small intestine
-the large intestine
What two glands produce digestive juices? - ANSWER pancreas and salivary glands
what does both the stomach and small intestine do? - ANSWER digest food
What does the liver do? - ANSWER produces bile
What does the small intestine do? - ANSWER absorbs soluble food molecules
What does the large intestine do? - ANSWER absorbs water from undigested food leaving
faeces
Describe in detail what happens to food as it passes through the digestive system? - ANSWER -
the insoluble food is mixed with digestive juices produces by glands
- it is digested in the stomach and small intestine
- bile produced by the liver is added to the food to help digestion
- absorption of the soluble food takes place in the small intestine
- water is absorbed by the large intestine
What are the plant organs? - ANSWER stems, leaves and roots
, What are the tissues found in plants? - ANSWER -Mesophyll tissue- where most of the
photosynthesis occurs in the plant
- Xylem and Phloem- transport things like water, mineral ions and sucrose around the plant
- Epidermal tissue- this covers the whole plant
What is photosynthesis? - ANSWER the process that produces 'food' in plants and algae. the
'food' it produces is glucose
Name the solution used to test a leaf for starch? - ANSWER iodine solution
What is the result of iodine test for start - ANSWER - the regions containing starch will
turn blue-black
- the regions without starch will turn yellow-brown
What does the test for starch show us? - ANSWER if photosynethsis has occurred
Where does photosynthesis happen? - ANSWER inside the chloroplasts
What is chlorophyll? - ANSWER a green substance found in chloroplasts which absorbs
sunlight and uses it to convert carbon dioxide (from the air) and water (from the soil) into
glucose. oxygen is a by-product
What are the top, middle and bottom layers of a leaf? - ANSWER top - upper epidermis
middle - spongy mesophyll
bottom - lower epidermis
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