Strand 1 Review

Why is DNA important?

• it is very small and very complicated

• it's in everything

• it serves as the blueprint for traits of all living things

• because we eat it every day for energy

Tags

NGSS.MS-LS3-1

Nitrogenous bases are joined by which type of bond?

• polar bonds

• ionic bonds

• covalent bonds

• hydrogen bonds

What is the name of the process in which DNA is copied?

• Protein Synthesis

• Unwinding

• Replication

• Polymerase

Sequence the steps of DNA replication in the correct order

• Ligase binds the Okazaki fragments and strands

• Polymerase adds new nucleotides

• Polymerase attaches to RNA primer created by Primase

• DNA Helicase unzips double helix

• Replication fork is formed

🌟 Pop Quiz Time! 🌟 Can you guess what the atomic number of an element tells us?

• The number of protons in the nucleus

• The total number of protons and neutrons in the nucleus

• The number of electrons whizzing around the nucleus

• The total mass of the atom

Answer explanation

The atomic number of an element tells us the number of protons in the nucleus, which is the correct choice.

A model of DNA is shown on the right. What is the arrow pointing to in this picture?

One answer.

• Deoxyribose

• Phosphate group

• nucleotides

• nitrogenous bases

Tags

NGSS.HS-LS1-1

The Himalayan rabbit's habitat has cold, snowy winters and mild summers. The body is typically covered in white fur except for the nose, feet, tail, and ears, which are covered in black fur. A scientist shaved an area of white fur on the back of a Himalayan rabbit and placed an ice pack over the shaved area . The shaved area grew black fur. Which of these best explains why the hair that grew back where the Ice pack was placed was black and not white?

• The white hair mutated to black hair as the rabbit's body temperature decreased.

• The coat color changed from white to black with the age of the rabbit.

• The genes for black hair were activated by specific temperatures.

• White hair only grows during certain times of the year.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS4-4

What does the 1.00794 stand for?

• Hydrogen

• atomic number

• atomic mass

• atomic explosion

Tags

NGSS.MS-PS1-1

What is the primary function of the mitochondria in a cell?

• Energy production

• Protein synthesis

• DNA replication

• Photosynthesis

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-7

Which of the following is a chemical change?

• Melting ice

• Boiling water

• Burning wood

• Breaking glass

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5