Q: Answer the following question given this paragraph: The cell is the smallest unit of structure and function of all living organisms. A cell is also the smallest unit of life, with single-celled organisms present on this planet for over 3.5 billion years. Single-celled ( unicellular ) organisms like bacteria are obviously composed of just one cell, whereas multicellular organisms can be composed of trillions of cells. Multicellular organisms include protists (though single-celled protists also exist), fungi, plants and animals. Most plant and animal cells are between 1 and 100 m and therefore can only be observed under the microscope. Q: What is the smallest unit of structure and function of all living organisms? Choices: - chromosome - organelle - organ - the cell A:
A: the cell

Q: Answer the following question given this paragraph: In biological systems, matter is continuously changing states as well. For example, carbon in the form of the gas carbon dioxide is changed into glucose, a solid. This change, of course, occurs during photosynthesis. During cellular respiration, carbons from the glucose molecule are changed back into the carbon dioxide gas. Q: During cellular respiration, carbons from the glucose molecule are changed back into what gas? Choices: - deformation dioxide - carbon monoxide - liquid dioxide - carbon dioxide A:
A: carbon dioxide

Q: Answer the following question given this paragraph: Regulation of Blood Glucose Levels by Insulin and Glucagon Glucose is required for cellular respiration and is the preferred fuel for all body cells. The body derives glucose from the breakdown of the carbohydrate-containing foods and drinks we consume. Glucose not immediately taken up by cells for fuel can be stored by the liver and muscles as glycogen, or converted to triglycerides and stored in the adipose tissue. Hormones regulate both the storage and the utilization of glucose as required. Receptors located in the pancreas sense blood glucose levels, and subsequently the pancreatic cells secrete glucagon or insulin to maintain normal levels. Q: What does the body derive from the breakdown of the carbohydrate-containing foods and drinks we consume? Choices: - insulin - lipids - amino acids - glucose A:
A: glucose

Q: Answer the following question given this paragraph: Many pathogens that cause respiratory diseases spread by droplets in the air. Droplets are released when a person sneezes or coughs. Thousands of tiny droplets are released when a person sneezes ( Figure below ). Each droplet can contain thousands of pathogens. Viruses that cause colds and the flu can spread in this way. You may get sick if you breathe in the pathogens. Q: How many pathogens can each droplet contain? Choices: - tens - billions - hundreds - thousands A:
A: thousands