uestion 1
A)One reason animal cells don't need a central vacuole is because they often have smaller vacuoles for storage. What is another reason animal cells don't need central vacuoles?(1 point)
Responses
Animal cells have cell walls.
Animal cells have cell walls.
Animal cells are round.
Animal cells are round.
Animal bodies have skeletons or other means of providing structure.
Animal bodies have skeletons or other means of providing structure.
Animals do not produce their own food.
Animals do not produce their own food.
Question 2
A)Which cells contain chloroplasts?(1 point)
Responses
cells in plant roots and stems
cells in plant roots and stems
cells in animal muscles
cells in animal muscles
cells in animal brains
cells in animal brains
cells in plant leaves
cells in plant leaves
Question 3
A)If a particular cell is known to be round and incapable of producing its own food, which one of these organelles would you assume the cell must have?(1 point)
Responses
plasma membrane
plasma membrane
chloroplast
chloroplast
central vacuole
central vacuole
cell wall
cell wall
Question 1
A)
Which natural resource from West Africa had a significant impact on the growth of Ghana?
(1 point)
Responses
gold
gold
salt
salt
silver
silver
wood
wood
Question 2
A)
Look at the map. Which ecosystems show where early civilizations developed because the area allowed people to grow crops even during times with little rainfall? Select all that apply.
(1 point)
A map shows Africa's ecosystems. It shows that most of North Africa, a small region along Africa's east coast, and a small region along southern Africa's west coast are desert. It shows that beneath the desert regions of North Africa, a band of Sahel runs from the Africa's east coast to its west coast. It shows that small regions of Sahel are also found along Africa's northern coast. It shows that rain forest is found in central Africa, and in small regions along Africa's west coast and on the neighboring island off its east coast. It shows that savanna encircles the central rain forest region, covering the majority of central and southern Africa.
Question 3
A)
How did the rulers of Ghana become wealthy?
(1 point)
Responses
by mining and selling salt
by mining and selling salt
by developing iron-working technology
by developing iron-working technology
by controlling the gold supply
by controlling the gold supply
by leading raids against nearby kingdoms
by leading raids against nearby kingdoms
Question 4
A)
Who invaded the Ghana Empire?
(1 point)
Responses
Neighboring African tribes
Neighboring African tribes
Caravans
Caravans
Spanish Muslims
Spanish Muslims
The Almoravids
The Almoravids