10.2

During which phase of mitosis do the chromosomes line up along the middle of the dividing cell

• anaphase

• prophase

• metaphase

What is the role of spindle fibers during mitosis

• it helps separate the chromosomes

• it duplicates the DNA

• it makes chromosomes visible

One difference between cell division in plant cells and animal cells is that plant cells have

• centrioles

• a cell plate

• centromeres

The time required for one half of a sample of a radioisotope to decay.

• half-life

• decay-life

• ionization rate

• carbon-14

Tags

NGSS.HS-PS1-8

What is the half-life of Carbon-14?

• 1620 years

• 5730 years

• 75,200 years

• 24 days

Tags

NGSS.HS-PS1-8

Scientists use the half-lives of potassium-40, uranium-235, and uranium-238 to determine the age of ___

• rock formations

• once living things

• meteorites

• plant fossils

Tags

NGSS.HS-ESS1-5

What is frequency?

• the number of vibrations per second

• how high or low a sound is

• the loudness or softness of a sound

• the back and forth movement of matter

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Diagram shows 3 types of sound waves generated from speaker. Which of the following statements is true?

• P has a higher pitch than Q

• Q has a higher pitch than R

• R has the highest pitch

• P, Q and R have the same pitch

Tags

NGSS.MS-PS4-1

What is the atomic number of Neon?

• 8

• 10

• 12

• 14

Which element has an atomic number of 10?

• Oxygen

• Neon

• Sodium

• Magnesium