II. BIO-ENGINEERING 1) About 98% of the human body is composed of only six eleme
ID: 301070 • Letter: I
Question
II. BIO-ENGINEERING 1) About 98% of the human body is composed of only six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorous. True False 2) The respiratory system is responsible for A. Supplying oxygen to the body Eliminating carbon dioxide in the body Regulating the body's pH balance A and B A, B, and C E. 3) Excretion is one function of the digestive systemm True False 4) The main purpose of hormones is to Alter the rate of synthesis of your cellular protein Change the rate of enzyme activity Change the rate of transport of nutrients through the cell wall All of the above None of the above 5) The nervous system is made up of the Peripheral nervous system Central nervous system Proximal nervous system A and B None of the above 6) The circulatory system consists of Lungs, mouth, throat, trachea, and bronchi Mouth, esophagus, stomach, and gallbladder Heart, arteries, and veins None of the above All of the above 7) Hemoglobin is an oxygen transporting protein in red blood cells. True False 8) Does biotechnology help people reduce their use of pesticides? TRUE FALSE 9) Does biotechnology help people produce more food on the same amount land? TRUE FALSE 10) Does biotechnology help the earth produce more nutritious food? TRUE FALSE 11) Which is a biofuel? Petrol Bioethanol Charcoal Methane ?? ??1,?Explanation / Answer
1. False.
98% of our body is composed of 6 elements that are carbon, hydrogen, nitrogen, oxygen, phosphorus and sulfur.
In question there is calcium instead of sulphur.
2. The answer is- E. A, B and C.
Respiratory system supplies oxygen to the tissue and eliminates carbon dioxide from tissues.
It also maintain pH balance of blood. If co2 increases it results in respiratory acidosis. Body balances it by respiring faster.
3. B. False.
Excretion is performed by excretory system.
4. The answer is- D. All of the above.
Hormones can act as transcription factor so it can alter the rate of of protein synthesis.
Hormones can affect the rate of enzyme activity. Thyroid hormones has role on various liver enzymes.
And hormones facilitates nutrients transport through the cell wall in plants.
5. The answer is- A and B
6. The answer is- C
7. True
8. True
9. True
10. True
11. The answer is- B
12. The answer is- A