Which of the Following Is TRUE in the Watson- Crick

question 23

Multiple Choice

Which of the following is TRUE in the Watson- Crick model of DNA?

• A) Phosphate groups always bond to ribose.
• B) Four different types of bases are found in DNA.
• C) Ribose always bonds to a nitrogenous base.
• D) During replication, the phosphate groups are copied but the base sequence is not copied.
• E) The number of adenines equals the number of guanines.

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Definitions:

Ozone Layer

A stratospheric layer of ozone molecules that protects life on Earth by absorbing the majority of the sun's harmful ultraviolet radiation.

Troposphere

The lowest layer of Earth's atmosphere where weather occurs and where most aviation takes place.

Stratosphere

The layer of the Earth's atmosphere above the troposphere, extending from about 10 to 50 km above the Earth's surface, where ozone is concentrated.

Volatile Organic Compound

Organic chemicals that have a high vapor pressure at ordinary room temperature, causing significant vapor emissions that can affect air quality and human health.