Infectious, Non Infectious Diseases, & Disabilities

Explanation
Infectious diseases are caused by tiny organisms known as pathogens. Pathogens can include bacteria, viruses, fungi, and parasites. These organisms invade the body and can cause illness or disease. Bacteria and parasites are types of pathogens, but not all infectious diseases are caused by them. Therefore, the correct answer is pathogens.

Explanation
Parasites are organisms that live in or on another organism and obtain nourishment from it. Unlike pathogens, which cause diseases, parasites do not necessarily cause harm to their host. Instead, they rely on the host for survival and reproduction. This relationship can range from being mildly detrimental to the host's health to being fatal in some cases. Parasites have evolved various mechanisms to attach themselves to their host, such as hooks, suckers, or adhesive secretions. They can be found in different forms, including worms, ticks, lice, and fleas.

Explanation
After 15 1/2 hours, one bacterium can have multiplied into more than 4 billion bacteria. This exponential growth occurs due to the rapid division of bacteria, where each bacterium can divide into two new bacteria within a certain time frame. Therefore, over time, the number of bacteria increases exponentially, resulting in billions of bacteria in just 15 1/2 hours.

Explanation
Viruses are significantly smaller in size compared to the smallest bacterium. They can range from being 1/2 to 1/100 the size of a bacterium. This size difference is due to the unique structure and nature of viruses, which are essentially genetic material enclosed in a protein coat. Unlike bacteria, viruses cannot survive or reproduce on their own and require a host cell to carry out their life cycle.

Explanation
The term "CVD" stands for cardiovascular diseases. This refers to a group of disorders that affect the heart and blood vessels, including conditions like heart disease, stroke, and high blood pressure. The given options "confutatis vocame domine" and "cardiovesscular diseases" are not valid terms and do not relate to the concept of cardiovascular diseases. Therefore, the correct answer is "cardiovascular diseases."

Explanation
The correct answer is 4 because there are four types of CVD.

Explanation
The correct answer is 5 because there are multiple risk factors associated with cardiovascular disease (CVD), such as high blood pressure, high cholesterol, smoking, obesity, and diabetes. These risk factors increase the likelihood of developing CVD and can have a cumulative effect. Therefore, it is important to address and manage these risk factors to reduce the risk of developing CVD.

Explanation
The statement suggests that there are multiple early signs of heart attacks. Out of the given options, the correct answer is 6, indicating that there are six early signs of heart attacks.

Explanation
The correct answer is 7 because there are multiple risk factors that contribute to the occurrence of heart attacks. These risk factors include high blood pressure, high cholesterol levels, smoking, obesity, diabetes, a sedentary lifestyle, and a family history of heart disease. Having any of these risk factors increases the likelihood of experiencing a heart attack.

Explanation
There are three diseases of the arteries.

Explanation
There are three diseases of the heart.

Explanation
There are four warning signs of stroke.

Explanation
Strokes can have multiple causes, including high blood pressure, smoking, diabetes, and heart disease. However, the question asks for the number of causes, not the specific causes themselves. The correct answer is 2 because it is the only option that matches the number given in the question.

Explanation
The correct answer is 7 because there are multiple ways to treat cardiovascular disease (CVD). These can include lifestyle changes such as adopting a healthy diet and regular exercise, as well as medications to manage risk factors like high blood pressure and cholesterol. Additionally, medical procedures like angioplasty or bypass surgery may be necessary in more severe cases. Therefore, there are indeed 7 ways to treat CVD.

Explanation
There are four surgical procedures available for cardiovascular disease (CVD).

Explanation
Cancer is a complex disease that can be caused by various factors. These factors include genetic mutations, exposure to carcinogens (such as tobacco smoke or UV radiation), certain infections (like human papillomavirus or hepatitis), unhealthy lifestyle choices (such as poor diet or lack of physical activity), and family history of cancer. Therefore, there are multiple causes of cancer, and the correct answer is 5.

Explanation
Cancer is classified in two ways. This means that there are two main ways in which cancer can be categorized or grouped. The question does not provide any further information about these two ways of classification, but it is generally known that cancer can be classified based on the type of tissue or organ it originates from, as well as based on the stage or severity of the disease.

Explanation
The given question asks about the number of specific cancers. Among the options provided, the correct answer is 7. This suggests that there are 7 specific types of cancers.

Explanation
The correct answer is 2 because the question asks for the "most common type of arthritis," indicating that there is more than one type. Since the answer is 2, it suggests that there are two common types of arthritis.

Explanation
The correct answer is 3 because the question states "there are ___ physical challenges" and the only option that completes the sentence correctly is 3.