LIVING THINGS
Which of these characteristics protect living things from ultraviolet radiation?
the atmosphere
The Earth’s core is mainly made up of…
iron
Which is the correct sequence from lower to higher levels of complexity?
b. cell, tissue, organ, ecosystem
Cellular metabolism produces...
energy, carbon dioxide and waste products.
What's the fundamental and functional unit of all living things?
the cell
Which of these is the hardest mineral?
a. talc
b. quartz
c. gypsum
d. fluorite
b. quartz
What best describes a human biologically?
d. multicellular, heterotrophic, eukaryotic
Choose the correct sequence of organs in the digestive system.
d. Mouth, pharynx, oesophagus, stomach.
Which of these biomolecules are inorganic?
water and mineral salts
Which of the following is a sedimentary rock?
c. clay
The three basic components of a cell are the…
membrane, nucleus and cytoplasm.
The absorption of most nutrients takes place in this organ.
Small intestine.
Which cellular structure contains the genetic material?
the nucleus
What is used to make glass?
quartz
Which of these systems isn’t directly involved in nutrition?
the locomotor system
Cirrhosis, a type of scarring, affects the...
liver
Algae belong to the...... kingdom
Protoctista Kingdom.
Minerals that contain metals that can be extracted from them are called…
ores
A tissue is...
a group of cells that carries out a specific function
Gas exchange takes place here...
pulmonary alveoli