Life Science: 8th Grade Review

What is the smallest building block of life?

• Atom

• Proton

• Neutron

• Cell

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

List from largest to smallest

• Cells, Tissues, Organs, Organ Systems

• Organ System, Organs, Tissues, Cells

• Cells, Tissues, Organ Systems, Organs

• Organ System, Orgons, Tissues, Cells

What is a Macromolecule?

• substances that form from joining many small molecules together

• Carbohydrates, lipids, proteins, and nucleic acids

• sugars, starches and cellulose, they form when simple sugars, called monosaccharides.

• tiniest molecule

Tags

NGSS.MS-LS1-7

What are the Macromolecules in the body?

• Lipids, Carbohydrates, proteins

• Carbohydrates, lipids

• Carbohydrates, lipids, proteins, and nucleic acids

• Carbohydrates, lipids, proteins, and sugars

Tags

NGSS.MS-LS3-1

Ability to maintain constant internal conditions when outside conditions change;

• Homophobic

• Homeostasis

• Homeostaysis

• Homogeneous

Which is true?

• Negative feedback is the signal to decrease a response

• Positive feedback is the signal to stop homeostasis as conditions are now normal.

• Positive feedback is the signal to start a response

• Negative feedback is the signal to stop a response

Tags

NGSS.HS-LS1-3

Which is the definition of genotype?

• The code that determines if an organism is homozygous

• The alleles of all the genes on an organism's chromosomes

• How genes affect the looks of an organism

• The code that determines if an organism is heterozygous

What is the difference between incomplete and co-dominance?

• Incomplete dominance is a blend of both traits, co-dominance is when both traits are still represented.

• Incomplete dominance is when both traits are still represented, co-dominance is a blend of both traits

• There is no difference, both still represent both traits

• There is no difference, both still is a blend of both traits

Which is correct?

• Variation is the trait inherited through a mutation

• Variation is the trait inherited through natural selection

• Variation is the large difference inherited among individuals of a population.

• Variation is the slight difference inherited among individuals of a population.

Tags

NGSS.MS-LS4-4

Evolution can create a new species...

• True

• False

• Maybe

• In the middle

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4