Earth is home for all living things-humans, animals,plants, and even tiny microbes.To study a house is to learn how its residents(居民) use it. An ecologist is a scientist who studies the 3 between organisms(生物) and their environment.The environment is an organism's surroundings. It ...
(a) Explain what is meant by the term antibiotic.(b) Explain why(i) only a few bacteri a grew in dish B compared with dish A,(ii) more bacteri a grew in C than in B.(c) Fig. 4.1 shows the effect of an antibiotic on a species of disease-causing bacterium.Suggest why antibioti...
Restricted use of antibiotics in organic farming has led to concern about high levels of microbes in manure, in turn causing food poisoning such as E. coli. There is a lack of sufficient evidence to prove organics suffer from a higher than conventional level of microbes, but right now studies...
What is meant by inoculation in the fermentation of a microorganism? Which one of the following microbes is NOT associated with vaginosis? a. Mobiluncus b. Gardnerella c. Prevotella d. Staphylococcus Name the most common bacteria or fungus causing the swimmer's ear. What is the term for a s...
How do microbes evade humoral immunity? What is the role of the lymphocyte in acquired immunity? Explain immunity. Which type of immune cell ties together humoral and cellular immunity? Why is it important for the acquired immune system to be divided into humoral and cellular immunity? Wouldn't...
根据“microbes”可知,微生物应该是极小的,故选B。 (4)题详解: 句意:生态学家是研究生物与其环境之间关系的科学家。 feeling感觉;relationships关系;distance距离;competitions比赛。根据“between organisms (生物)and their environment”以及常识可知,生态学家是研究生物与其环境之间关系的科学家。故选B。 (5)题...
He joined two Greek _1_:"oikos", meaning "house", and "logie", meaning “the study of". Together they mean"the study of the house". The " house" Haeckel had in mind is our _2_, Earth. Earth is home for all living things-humans, animals, plants, and even _3_ microbes (微...
What is a trophic hormone? Give an example. Draw a neatly labeled diagram of chloroplast found in leaf, and its role in photosynthesis? What is meant by biofortification? What do you mean by permeability of membrane? Explain with suitable example. Name the types of nitrogenous bases present in...
What is meant by "causative microorganism"? What is the causative agent of MRSA? What did microbiologists contribute to the germ theory of disease? What type of organism causes amoebic dysentery? Who named microbes animalcules? What type of microorganism causes HIV infection?
Which of these cells kill by engulfing and destroying invading microbes? a. phagocytic cells b. lymphatic cells c. basophils d. natural killer cells Which of the following is the largest in size? A. Escherichia coli (bacteria) B. Amoeba proteus (protoz...