Food and Nutrition
What is an omnivore?
eats both plants and animals
Name the organelles unique to plant cells
cell wall, chloroplast and large vacuole
Name the 3 r's
Response, respiration and reproduction
The scientific study of life?
Where is bile produced?
The liver
What factors can affect how much food a person eats?
Age, gender, activity and health reasons
Where in the cell does respiration take place?
Mitochondira
What are two types of reproduction?
sexual and asexual
What is meant by the term hypothesis?
An educated guess for an experiment
Where is bile stored?
The gall bladder
What chemical elements make up proteins?
Carbon, hydrogen, oxygen and nitrogen
If animals cells do not have a vacuole they can have small structures instead. These are called?
Vesicles
How are multicellular organisms organised?
cells- tissues-organs-systems-organisms
What is a control
a control is used for comparison. It is kept the same or constant
Name an enzyme that breaks down proteins
Pepsin
What is a polysachharide?
A structural carbohydrate made up of many sugar units
What does the golgi apparatus do?
Transports materials or makes proteins and fats
What does homeostasis mean?
The maintenance of stable body conditions. E.g temp around 37 degrees
What is an independent variable?
Something you change in the experiment
What is chyme?
A semi liquid substance prodcued in the stomach. undigested food taht has mixed with gastric juices
What is the difference between a tryglyceride and a phospholipid?
Phospholipid only has two fatty acids, third one is replaced by a phosphate group
What does selectively permeable mean?
the membrane allows some molecules through but prevents others from passing through
What is a catabolic reaction? Name an example
What is a dependent variable?
Something you measure, usually as a result of the change
Name the longest section of the large intestine
The colon