Cumulative Exam Answers

is the longest stage of the cell cycle.

Which are characteristics of the integumentary system? Select two options.Skin’s outer layer has living cells.Hair helps regulate temperature.Oil glands produce sweat and oil.Nails protect nerves.Hair stays on the head for two months.

In the heart, one ventricle pushes blood with oxygen to the cells of the body. Where does the other ventricle push the blood without oxygen?

Where would you most likely find infectious agents? Check all that apply.in salivain mucuson a door handleon a water fountainon a genein sewagein animal waste

In studies about new medicines, researchers usually give one group of patients the medicine that is designed to treat an illness. They give another group of patients a placebo, which is taken the same way as the medicine but does not actually contain the ingredients of any medicine. Different medicines are tested in different experiments, but the placebos usually contain the same non-medical ingredients. If both groups of patients are healed, then researchers cannot be sure whether the medicine caused improvement, but if the group given the medicine is healed while the group given the placebo remains ill, researchers can conclude that the medicine causes the illness to go away.

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Which action is a physical change in digestion?

Which is an example of a pandemic?

Which best describes two ways in which hydrogen is involved in photosynthesis?

Which is the last section of the digestive system?

Carla drew a diagram to compare the roles of oxygen and hydrogen in photosynthesis.

During digestion, water is both added and removed. Which area of the digestive system removes water?

A food company has designed new types of breakfast cereal and is now working to decide which cereal to mass produce and begin selling. They can measure some traits of the cereals with scientific tools, but they also use small surveys to ask cereal buyers about their opinions.Which question could most likely be answered scientifically by the food company?

Which receive information from the axon terminals of the neuron? Select three options.musclesmucusneuronsbonesglands

Gabriel is at a stage where his body is changing physically; he is growing facial hair and building muscle. He is also just starting to make sperm.What is most likely Gabriel’s age?

The three main types of scientific investigations are descriptive, comparative, and experimental. Which components are included in all three types of investigations?a scientific questionan independent variablea dependent variablea procedurea control groupa conclusion

The biceps brachii is the muscle that moves the arm up and down.Which type of muscle tissue makes up the biceps?

Which structure carries the semen to the penis?

Oil is a powerful source of energy used for cars, machines, and many other purposes. While studying sources of energy that could replace the use of oil, a student thinks about solar power, wind power, nuclear power, and electric batteries. The students asks,"Which type of source will waste the least energy and provide the most energy in all situations?"Which best describes why a scientist would ask a different question than this one?

Which is the control center of the cell?

Which shows the pathway of structures that sperm pass through or by to exit the body?

Gerald is admitted to the hospital because he has pneumonia. His blood work shows a low number of T-cells.The doctor wants to order a test to see if Gerald is HIV positive. Why would the doctor do this?

Which is the jellylike substance within cells?

Which statement describes the general process of diffusion?

Which describes the role of carbon dioxide in photosynthesis?