What differentiates virulent strains of Streptococcus? Search for: Why is the production of a vaccine for the common cold so difficult? Why is it so difficult to prevent Pneumocystis? Search for: Why is the presence of a capsule considered a virulence factor? What is the difference between capsule and slime layer? Many bacterial cells secrete […]
Is all life on Earth related?
Is all life on Earth related? All living beings are in fact descendants of a unique ancestor commonly referred to as the last universal common ancestor (LUCA) of all life on Earth, according to modern evolutionary biology. The more recent the ancestral population two species have in common, the more closely are they related. When […]
How is federal government better than unitary?
How is federal government better than unitary? Federal government is better than unitary government because : The power is not concentrated in only in the centre but it is distributed at the state or lower levels as well. This helps to avoid conflicts. What are the benefits of a federal government? 10 Advantages of A […]
How is terrorism a threat to security?
How is terrorism a threat to security? Yet the impact of terrorism extends far beyond the statistical threat to life. The terrorist threat is a malevolent and seemingly random threat, and so it threatens citizens’ psychological sense of security to a far greater degree than other threats. Is terrorism a threat to international security? Increasingly, […]
Which of the following is not a level of biodiversity?
Which of the following is not a level of biodiversity? Answer: population is not a level. Explanation: the levels are genetic,species and ecosystem. What increases the biodiversity of a habitat? As a general rule, increasing biodiversity can be achieved by diversifying the range of habitats or vegetation structures available at a site. This can be […]
What is biometric scanning?
What is biometric scanning? Biometrics scanners are hardware used to capture the biometric for verification of identity. These scans match against the saved database to approve or deny access to the system. In other words, biometric security means your body becomes the “key” to unlock your access. Which of the following can be considered for […]
What is racial identity?
What is racial identity? Race is socially understood to be derived from an individual’s physical features, such as white or black skin tone. The social construction of racial identity can be referred as a sense of group or collective identity based on one’s perception that he or she shares a common heritage with a particular […]
Why is it important to protect the fundamental human rights?
Why is it important to protect the fundamental human rights? The Constitution of the Republic of South Africa affirms the values of equality, freedom and dignity, and enshrines the rights of all people in the country including the right to education, freedom of association and freedom of expression. … Why is it important for the […]
What type of energy is found in a volleyball player spiking a ball?
What type of energy is found in a volleyball player spiking a ball? Explanation: Kinetic because the ball is being moved. The other type of energy is potential and potential energy is energy that isn’t being moved. How do you know if something is kinetic or potential energy? Energy stored in an object due to […]
What is an definitive host?
What is an definitive host? : the host in which the sexual reproduction of a parasite takes place — compare intermediate host sense 1. Which is example of definitive host? The definitive host refers to the organism wherein the parasite reaches its mature form. Thus, the parasite at this stage is typically capable of reproduction. […]