Answer the following question given this paragraph: Q: What characteristic of the endothelium structure minimizes resistance to the flow of blood? Choices: - uneven surface - liquid surface - transition surface - smooth surface A:
smooth surface
(Question)
Answer the following question given this paragraph: Lymphocytes ( Figure below ), a type of white blood cell, are the key cells of an immune response. There are trillions of lymphocytes in the human body. They make up about one quarter of all white blood cells. Usually, fewer than half of the body's lymphocytes are in the blood. The rest are in the lymph, lymph nodes, and lymph organs. Q: What type of cells make up about one quarter of all white blood cells? Choices: - Fat - erythrocytes - tumors - lymphocytes A:
(Answer)
lymphocytes
Ques: Answer the following question given this paragraph: Q: Cold sores, influenza, and the common cold are all? Choices: - digestive infections - trend infections - anal infections - viral infections A:
Ans: viral infections
(Q).
Answer the following question given this paragraph: Symbiosis is a close relationship between organisms of different species in which at least one of the organisms benefits. The other organism may also benefit, it may be unaffected by the relationship, or it may be harmed by the relationship. Figure below shows an example of symbiosis. The birds in the picture are able to pick out food from the fur of the deer. The deer won't eat the birds. In fact, the deer knowingly lets the birds rest on it. What, if anything, do you think the deer gets out of the relationship?. Q: What is defined as a close relationship between organisms of different species in which at least one of the organisms benefits? Choices: - co-operative - endosymbiosis - parasitic - symbiosis A:
(A).
symbiosis
Ques:Answer the following question given this paragraph: Unfortunately, the layer of good ozone is being destroyed by air pollution. The chief culprits are chlorine and bromine gases. They are released in aerosol sprays, coolants, and other products. Loss of ozone has created an ozone hole over Antarctica. Ozone depletion results in higher levels of UV radiation reaching Earth. In humans, this increases skin cancers and eye cataracts. It also disturbs the nitrogen cycle, kills plankton, and disrupts ocean food webs. The total loss of the ozone layer would be devastating to most life. Its rate of loss has slowed with restrictions on pollutants, but it is still at risk. Q: Chlorine and bromine gases released into the atmosphere have helped damage what layer of the atmosphere? Choices: - stratospheric layer - carbon layer - polluted layer - ozone layer A:

Ans:ozone layer
Ques:Answer the following question given this paragraph: By gaining an electron, the chlorine atom becomes a chloride ion. It now has more electrons than protons and a charge of -1. Negative ions are named by adding the suffix ide to the first part of the element name. The symbol for chloride is Cl - . Q: What kind of ions are named by adding the suffix -ide to the end? Choices: - similar ions - particular ions - positive ions - negative ions A:

Ans:
negative ions