Ques: Answer the following question given this paragraph: Amino acids are molecules of carbon, hydrogen, and oxygen. These molecules are called the building blocks of life because they create proteins. Proteins are complex organic molecules that make up cells. They are the most abundant class of biological molecules. Q: What are complex organic molecules that make up cells? Choices: - sugars - carbohydrates - acids - proteins A:
Ans: proteins

Ques: Answer the following question given this paragraph: Pulmonary gas exchange is the exchange of gases between inhaled air and the blood. It occurs in the alveoli of the lungs. Alveoli (singular, alveolus) are grape-like clusters surrounded by networks of thin-walled pulmonary capillaries. After you inhale, there is a greater concentration of oxygen in the alveoli than in the blood of the pulmonary capillaries, so oxygen diffuses from the alveoli into the blood across the capillaries (see Figure below ). Carbon dioxide, in contrast, is more concentrated in the blood of the pulmonary capillaries than in the alveoli, so it diffuses in the opposite direction. Q: In what part of the lungs is pulmonary gas exchanged? Choices: - bronchioles - trachea - bronchi - alveoli A:
Ans: alveoli

Ques: Answer the following question given this paragraph: "Cardio" has become slang for aerobic exercise that raises your heart rate for an extended amount of time. Cardio can include biking, running, or swimming. Can you guess one of the main organs of the cardiovascular system? Yes, your heart. Q: "cardio" has become slang for what type of exercise that raises your heart rate for an extended amount of time? Choices: - cyclical - kinetic - anaerobic - aerobic A:
Ans: aerobic

Ques: Answer the following question given this paragraph: The only completely effective way to prevent infection with STIs is to avoid sexual contact and other risky behaviors. Using condoms can lower the risk of becoming infected with STIs during some types of sexual activity. However, condoms are not foolproof. Pathogens may be present on areas of the body not covered by condoms. Condoms can also break or be used incorrectly. Q: What is the only way to completely avoid stis? Choices: - cover your mouth - oral sex - contraceptive use - avoid sexual contact A:
Ans:
avoid sexual contact