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WorksheetsUnit 9: The Human Body system Review
Total questions: 12
Worksheet time: 13mins
Which of the following correctly pairs the organ with its function?
Sperm ⇒ produces testosterone
Ovary ⇒ produces egg cells
Pituitary gland ⇒ regulates sperm production
Fallopian tube ⇒ produces estrogen
Which of the following is most likely to occur during the second trimester of pregnancy?
Fat is deposited under the skin
The amniotic sac and placenta form
Cartilage grows where bones will form later
Tissues & organs develop & begin to function
Which of the following will occur if an ovum is fertilized?
pregnancy
mensuration
estrogen
puberty
correctly identify the frontal lobe and the occipital lobe of the brain on the diagram
What might cause an increase in blood volume?
Blood Pressure
Hypotension
Resistance
Hydration
Correctly identify the Cerebellum and temporal lobe
Which of the following best describes a connection between blood flow and age?
As people age, their blood vessels become more elastic leading to lower blood pressure.
As people age, the heart becomes more efficient with each pump, increasing blood pressure.
As people age, blood pressure decreases leading to more cardiovascular disease.
As people age, plaque build up in the arteries increases resistance, which increases blood pressure.
Typhoid fever, a disease that causes headaches, digestive upset, and a high fever, is caused by the bacterium Salmonella typhi. Typhoid can be spread from person to person by contaminated food, water, or a lack of cleanliness. Since the 19th century, the number of individuals infected with this disease has decreased. Which statement below best explains the reason for the decrease?
Scientists have corrected the genes damaged by disease-causing bacteria.
Public health officials have placed more restrictions on the use of toxins that cause disease.
Improvements in nutrition have led to less infections.
Personal hygiene habits, such as handwashing, have reduced bacterial contamination.
The diagram show some changes that took place in a bacterial population recently exposed to an antibiotic.
Which statement best explains the presence of bacteria on day 4?
Over time, the antibiotic became less effective.
Bacterial populations cannot survive exposure to antibiotics.
Some bacterial cells from day 1 were resistant to this antibiotic.
Some of the bacterials cells developed proteins that enabled them to survive exposure to the antibiotic.
In the 1880s, Louis Pasteur developed a method of weakening viruses. The weakened viruses could be injected into healthy individuals. How is this method effective in fighting viral diseases?
The weakened viruses attach to unaffected viruses in the host and interrupt the viral reproductive cycle.
The immune system develops antibodies in response to the weakened viruses.
The rate of genetic mutation in the host is decreased due to the introduction of weakened viruses.
Weakened viruses are unable to enter the host organism.
Sperm are created through meiosis in an area of the testes called the seminiferous tubules. Through which structure do the mature sperm travel to exit the testes?
Click on the correct structure
Scientific research shows that alcohol consumption during pregnancy is harmful to a developing fetus, particularly in the first trimester. Which of the following best explains this?
During the first trimester, the fetus cannot excrete wastes.
During the first trimester, the lungs become fully functional.
During the first trimester, alcohol can easily enter the mouth of the fetus.
During the first trimester, many of the essential organs of the fetus are forming.
