How did Dmitri Mendeleev impact the world? Lived 1834 – 1907. Mendeleev’s wish led to his discovery of the periodic law and his creation of the periodic table – one of the most iconic symbols in science: almost everyone recognizes it instantly: science has few other creations as well-known as the periodic table. Can you […]
How do you kill Bacillus anthracis endospores?
How do you kill Bacillus anthracis endospores? anthracis are killed by UV radiation, dry heat, wet heat and desiccation. Methods and results: Hydrated B. anthracis spores were HTGE treated at c. 220°C for 50 ms, and the treated spores were tested for germination, mutagenesis, rupture and loss of dipicolinic acid. Why does Bacillus anthracis form […]
What is one major difference between plasma and gas and why does that difference exist?
What is one major difference between plasma and gas and why does that difference exist? They are different and unique from the other states of matter. Plasma is different from a gas, because it is made up of groups of positively and negatively charged particles. In neon gas, the electrons are all bound to the […]
Why didnt Barber kill Torres?
Why didnt Barber kill Torres? The identity of Torres is defined by his being “an executioner,” whereas the barber’s identity is defined by the job that he does. The barber therefore decides not to kill Torres because he realises that this is not part of his central identity. What is the irony in just lather […]
How does a ionic bond form?
How does a ionic bond form? An ionic bond is formed by the complete transfer of some electrons from one atom to another. The atom losing one or more electrons becomes a cation—a positively charged ion. The atom gaining one or more electron becomes an anion—a negatively charged ion. What must occur for an ionic […]
Why do moms love sons more than daughters?
Why do moms love sons more than daughters? A new survey suggests that mothers are more critical of their daughters, more indulgent of their sons. … More than half said they had formed a stronger bond with their sons and mothers were more likely to describe their little girls as “stroppy” and “serious”, and their […]
When a substance is boiling Will the added heat increase its temperature?
When a substance is boiling Will the added heat increase its temperature? Adding heat, however, does not always increase the temperature. For instance, when water is boiling, adding heat does not increase its temperature. This happens at the boiling temperature of every substance that can vaporize. What are the 4 conditions which allow bacteria to […]
Can you bounce a basketball on grass?
Can you bounce a basketball on grass? At least two different surfaces to bounce a basketball on, with at least one hard surface and one soft surface (For example, you could use carpet, concrete, grass, linoleum and a basketball court. The surface needs to be flat and next to a wall or other large perpendicular […]
Has a mare won the Kentucky Derby?
Has a mare won the Kentucky Derby? Winning Colors (1988), Genuine Risk (1980) and Regret (1915) are the only fillies to win the Kentucky Derby. Winning Colors and Genuine Risk are the only two fillies to compete in all three Triple Crown races. Could any horse beat Secretariat? Only four horses challenged Secretariat in the […]
What are the 3 electron carriers?
What are the 3 electron carriers? Oxidation-reduction reactions always happen in matched pairs; no molecule can be oxidized unless another is reduced. Flavin Adenine Dinucleotide. Flavin adenine dinucleotide, or FAD, consists of riboflavin attached to an adenosine diphosphate molecule. Nicotinamide Adenine Dinucleotide. Coenzyme Q. Cytochrome C. Is NADH an electron carrier? NADH is the reduced […]