Answer the following question given this paragraph: Attached to the placenta is the amniotic sac , an enclosed membrane that surrounds and protects the fetus (see Figure above ). It contains amniotic fluid, which consists of water and dissolved substances. The fluid allows the fetus to move freely until it grows to fill most of the available space. The fluid also cushions the fetus and helps protect it from injury. Q: The amniotic sac is attached to what? Choices: - Umbilical Cord - Stomach - uterus - placenta A:
placenta
(Question)
Answer the following question given this paragraph: Q: Introduction of antigens into the body through immunization can confer what benefit? Choices: - active respiration - growth rate - sensitive immunity - active immunity A:
(Answer)
active immunity
Ques: Answer the following question given this paragraph: Electrons at lower energy levels, which are closer to the nucleus, have less energy. At the lowest energy level, which has the least energy, there is just one orbital, so this energy level has a maximum of two electrons. Q: What happens to the energy levels of electrons as they are closer to the nucleus? Choices: - they are higher - they balance - they divide - they are lower A:
Ans: they are lower
(Q).
Answer the following question given this paragraph: Respiratory system disorders are directly related to air pollution. These disorders have severe effects on human health, some leading to death directly related to air pollution. Air pollution related respiratory disorders include asthma, bronchitis, and emphysema. Asthma is a respiratory disorder characterized by wheezing, coughing, and a feeling of constriction in the chest. Bronchitis is inflammation of the membrane lining of the bronchial tubes of the lungs. Emphysema is a deadly lung disease characterized by abnormal enlargement of air spaces in the lungs and destruction of the lung tissue. Additional lung and heart diseases are also related to air pollution, as are respiratory allergies. Q: What disease is described as a respiratory disorder characterized by wheezing, coughing, and a feeling of constriction in the chest? Choices: - indigestion - dementia - inflammation - asthma A:
(A).
asthma
Ques:Answer the following question given this paragraph: Stuart Chalmers. Cows digest cellulose with the aid of methanogens . CC BY 2.0. Q: Which of the animals digest cellulose with the aid of methanogens? Choices: - pigs - apes - goats - cows A:

Ans:cows
Ques: Answer the following question given this paragraph: The kidneys play many vital roles in homeostasis . They work with many other organ systems to do this. For example, they work with the circulatory system to filter blood, and with the urinary system to remove wastes. Q: The kidneys work with the urinary system to remove what? Choices: - nutrients - water - ions - wastes A:
Ans:
wastes