DNA Checkpoint

1. What is the shape of a DNA molecule called?

• 1. Spiral Staircase

• Double Helix

• Twisted Ladder

• Twisted Staircase

One DNA strand consists of millions of nucleotides. What three things are nucleotides made up of?

• 1. Deoxyribose, phosphate, one nitrogenous base

• Sugar, phosphate, and polymerase

• Deoxyribose, phosphate, and 4 nitrogenous bases

• Deoxyribose, sugar, one nitrogenous base

1. The "steps" or "rungs" of the DNA ladder are made of:

• 1. Phosphates and bases

• Sugars

• Sugars and phosphates

• Nitrogenous Bases

The “backbone” of the DNA ladder is made of:

• Sugars and phosphates

• Sugars

• Bases

• Phosphates and bases

What is a chromosome?

• A chromosome is a thread-like structure made up of DNA and proteins that carries genetic information in the form of genes.
• A chromosome is a structure found only in animals.
• A chromosome is a small molecule that carries genetic information.
• A chromosome is a type of cell found in plants.

Match the following nitrogenous bases:

• Thymine

• Adenine

• Cytosine

• Cytosine

• Guanine

• Guanine

• Adenine

• Thymine

What is a gene?

• A gene is a segment of DNA that contains the instructions for building and maintaining an organism.
• A gene is a type of protein found in cells.
• A gene is a small molecule that transports proteins.

• A gene is a structure in the nucleus of a cell that stores energy.

A phenotype is:

• The study of inherited traits

• The physical appearance

• The genetic material of an organism
• The process of cell division

Tags

NGSS.HS-LS3-1

A trait is:

• A temporary state of mind
• A physical feature of a person
• A genetically determined characteristic

• A learned behavior

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2