What are the three roles of bacteria? In summary, bacteria are single-celled microbes without a nucleus. Bacteria play many roles in our ecosystem. Bacteria are decomposers which break down dead material and recycle it. They also can be producers, making food from sunlight, such as photosynthetic bacteria, or chemicals, such as chemosynthetic bacteria. What are […]
Why are unit tests useless?
Why are unit tests useless? Unit tests ossify the internal structure of the code. All the unit tests are suddenly rendered useless. Some test code may be reused but all in all the entire test suite has to be rewritten. This means that unit tests increase maintenance liabilities because they are less resilient against code […]
What happens if the brain does not maintain homeostasis?
What happens if the brain does not maintain homeostasis? What happens if there’s disruption? If homeostasis is disrupted, it must be controlled or a disease/disorder may result. Your body systems work together to maintain balance. If that balance is shifted or disrupted and homeostasis is not maintained, the results may not allow normal functioning of […]
Why should mass not be represented by an arrow?
What are the different stimuli?
What are the different stimuli? excited by three types of stimuli—mechanical, thermal, and chemical; some endings respond primarily to one type of stimulation, whereas other endings can detect all types. Chemical substances produced by the body that excite pain receptors include bradykinin, serotonin, and histamine. What are some examples of stimuli? Stimuli include: Irritants. Sights. […]
WHAT IS units in chemistry?
WHAT IS units in chemistry? Chemistry primarily uses five of the base units: the mole for amount, the kilogram for mass, the meter for length, the second for time, and the kelvin for temperature. The degree Celsius (oC) is also commonly used for temperature. What is the formula to convert kg to lbs? 1 Kilogram […]
What would happen if a gamma ray hit Earth?
What would happen if a gamma ray hit Earth? With the gamma-rays beamed directly at Earth, the radiation would destroy a significant portion of our atmosphere, specifically the ozone layer. The photons streaming from the burst would cause chemical reactions leading to photochemical smog. This would further deplete our protection from cosmic rays. How far […]
Which organ system is responsible for obtaining oxygen?
Which organ system is responsible for obtaining oxygen? The primary function of the respiratory system is to supply the blood with oxygen in order for the blood to deliver oxygen to all parts of the body. The respiratory system does this through breathing. It consists of the nose, larynx, trachea, diaphragm, bronchi, and lungs. How […]
Which type of organisms are called consumers?
Which type of organisms are called consumers? Consumers are typically viewed as predatory animals such as meat-eaters. However, herbivorous animals and parasitic fungi are also consumers. Which organisms are considered Heterotrophs? Heterotrophs are known as consumers because they consume producers or other consumers. Dogs, birds, fish, and humans are all examples of heterotrophs. Heterotrophs occupy […]