2019-2020 Biology Final Semester 1

How many electrons does an atom of magnesium have?

• 10

• 11

• 12

• 24

How many neutrons does an atom of magnesium have?

• 10

• 11

• 12

• 24

How many electron shells does an atom of magnesium have?

• 1

• 2

• 3

• 4

How many valence electrons does an atom of magnesium have?1

• 1

• 2

• 3

• 4

Lewis makes sugar cookies with different amounts of sugar. He wants to see if cookies with more sugar sell better than cookies with less sugar. He counts the number of cookies sold to find out his answer. What is the dependent variable?

• Amount of sugar used

• Number of cookies sold

• Number of customers

Lewis makes sugar cookies with different amounts of sugar. He wants to see if cookies with more sugar sell better than cookies with less sugar. He counts the number of cookies sold to find out his answer. What is the independent variable?

• Amount of sugar used

• Number of cookies sold

• Number of customers

The number of living organisms that an environment can support

• keystone species

• carrying capacity

• limiting factors

• resilience

The living components of an ecosystem

• abiotic factors

• biotic factors

• predator-prey

• parasitism

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2

What is the carrying capacity of the graph?

• 1000

• 8000

• 800

• 600

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

What happens if a population grows past its carrying capacity?

• The population keeps growing

• The population starts to die off

• The entire species will go extinct

• The carrying capacity just increases

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1