7th Grade Final Exam Review

Which of the following is the correct organization of genetic material from smallest to largest?

• Genes, DNA, chromosomes, cell nucleus
• genes, chromosomes, DNA, cell nucleus
• cell nucleus, genes, DNA, chromosomes
• chromosomes, DNA, cell nucleus, genes

Genetic information responsible for physical characteristics such as eye color, height, hair color, and skin color can be found within an organism's...

• ribosome
• golgi body
• nucleus
• cytoplasm

Which water conservation technique is most important during the month of August?

• Water home foundations using a drip hose
• Install low-flow shower heads
• Water lawns during the early morning hours
• Take showers rather than baths

The insulated feature of space suit layers are designed to...

• regulate temperature
• protect from radiation
• trap excessive CO2
• provide pure O2

On a space mission, the gravitational environment can negatively affect the bone density of astronauts. Which accommodation will most likely protect the bone health of the crew on a space mission?

• Drinking extra fluids
• Eating more calories
• Wearing protective clothing while inside the space vehicle
• Engaging in a daily routine using exercise equipment

What is the relationship between ecological succession and equilibrium in an ecosystem?

• Ecological succession helps maintain equilibrium in an ecosystem.
• Ecological succession prevents ecosystems from ever reaching equilibrium. 
• There is no relationship between ecological succession and equilibrium.
• Ecological succession and equilibrium are the same thing.

Wildebeests are cow-lie animals with horns. They migrate in herds across Africa in search of grasses they feed on. Wildebeests are prey for lions. A drought would MOST LIKELY cause a herd of wildebeests to..

• migrate farther than usual
• become more horse-like
• begin to prey on lions
• produce larger herds

What caused the behavior of the plant in the diagram above?

• response to gravity
• negative homeostasis
• excessive humidity
• lack of turgor pressure

Identify a situation below in which work is being done.

• Turning a page in a science book 
• Reading a science book
• Resting a science book against the wall
• Holding a science book

What kind of change results from the breakdown of starch into glucose?

• mechanical 
• physical 
• chemical 
• cyclical