Amino acids bond to each other using hydrogen bonds. true or false

Different microbes grow in a wide variety of environmental conditions; however, most have preferences for certain temperatures, pH, and atmospheric gases because although microbes are widespread in their occurrence,they are found almost everywhere,in the air,water,soil,food,decaying matter,oil deposits,in plants etc.

but their number and their types vary according to the locality and environmental conditions.

Although, some microbes are always present and contribute towards natural flora BUT besides this others are present in specific environments such as some in hot springs bearing very HIGH TEMPERATURE RANGES for example: Thermus aquaticus.

some of them inhabit the acidic or alkaline soil feeding on HUMUS.

Most of the microbes prefer ATMOSPHERIC GASES i.e some require oxygen for their survival .For example: Pseudomonas.

some don't require O2 for survival i.e Spirochete.

IN SHORT, most of the microbes have preferences for various environmental conditions.

5 0

3 years ago

Which of the following statements about the development of infectious diseases is correct?

zalisa [80]

The period of Convalescence is the time during which the person regains health and fully recovers.

Explanation:

Diseases that can spread from one person to other are called infectious disease.
Disease development is divided into Incubation period, Prodromal period, period of illness, Decline period, and period of Convalescence.
During incubation period the pathogen enters the host body and starts multiplying itself. But the signs of diseases are unnoticeable.
Then comes the prodromal period, when the pathogen keeps multiplying itself and some signs of disease are observed but they are not obvious
After the prodromal period comes the period of illness when the patient exhibits obvious signs of sickness.
As the period of illness is over the symptoms of disease start to cease and the the number of pathogen decrease in body.This period is the period of decline.
Finally comes the period of Convalescence when the person returns to his pre-disease state and is completely healthy. (except irreversible damage caused by the disease)

7 0

3 years ago