A. Cause diseases only. B. Have no role. C. Play a vital role in our environment and bodies. D. Only E. xist in laboratories. 相关知识点: 试题来源: 解析 C。解析:文中提到“Microbes play a vital role in our environment and in our bodies.”,即微生物在我们的环境和身体中起着至关重...
This chapter describes the mechanisms by which a microbe causes disease. Many microbes release substances into the body as they multiply. Some of these substances are formed as part of the microbe's strategy, because they interfere with host defenses. These substances are called toxins and they ...
Microbes are also exploited by people in biotechnology, both in traditional food and beverage preparation, and in modern technologies based on genetic engineering. However, pathogenic microbes are harmful, since they invade and grow within other organisms, causing diseases that kill millions of people,...
While we have passed several significant milestones, we are still far from the goal of a sustainable agricultural system beyond our planet Regolith-based agriculture (RBA) should be a component of sustainable agriculture solutions beyond Earth, one which can also provide insight into plant growth in...
Even making more subtle changes to the landscape—such as digging pools, opening irrigation ditches, and discarding tires—create new niches for vectors, animals that are capable of carrying human disease. Insects carry about one hundred different human diseases, which are called arboviruses ( ar ...
How are microbes spread? The spreading of microbes and disease is known as transmission. A cough or a sneeze can release millions of microbes into the air which can then infect somebody else. 1. Transmission by air Dirty water can transmit many diseases, e.g. cholera, which can be transmit...
are also white blood cells and the main types are B cells, T helper cells and T killer cells, will be the killers of the sneaky antigens. B cells, T helper and T killer cells work together to find and kill these antigens. B cells produce substances, called antibodies, which stick to...
which therefore cannot be controlled by them.” The US government’s Interagency Task Force states: “Many other pathogens including the bacteria that cause tuberculosis and gonorrhea, human immunodeficiency virus, the fungi that cause yeast infections, and the parasites that cause malaria – are ...
PD and possibly other neurodegenerative diseases are associated with dysbiosis in the GI tract, which can result in an unbalance of the host immune system. As a consequence, mucosal and systemic inflammation might ultimately reach the brain where they cause neurodegeneration. Lately, it has been hyp...
Microbes are a vital component of fertile soil. In the human body, microorganisms make up the human microbiota, including the essential gut flora. The pathogens responsible for many infectious diseases are microbes and, as such, are the target of hygiene measures. ...