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)
Q: What type of cells make up about one quarter of all white blood cells? Choices: - Fat - erythrocytes - tumors - lymphocytes A:
(Answer)
lymphocytes

Ques: Q: Cold sores, influenza, and the common cold are all? Choices: - digestive infections - trend infections - anal infections - viral infections A:
Ans: viral infections

(Q).
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: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: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