Author Question: The nitrogenous bases include adenine and _______________ (both purines), as well as thymine and ... (Read 76 times)

luminitza

  • Hero Member
  • *****
  • Posts: 555
The nitrogenous bases include adenine and _______________ (both purines), as well as thymine and _______________.
 Fill in the blank(s) with correct word

Question 2

Describe the anatomy of the pulmonary system.



carolinefletcherr

  • Sr. Member
  • ****
  • Posts: 313
Answer to Question 1

guanine; cytosine

Answer to Question 2

The pulmonary system includes the upper and lower respiratory tracts. The upper respiratory tract includes the nose, nasal cavity, frontal and maxillary sinuses, larynx, and trachea. The lower respiratory tract includes the lungs, bronchi, and alveoli.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

For a complete list of videos, visit our video library