Answer:
Earth takes in thermal energy from the Sun in a process called THERMAL RADIATION.
Sunlight strikes Earth's surface at different angles. This angle is called the angle of INCIDENCE.
Explanation:
It is thermal radiation because thermal radiation refer to process where electromagnetic waves are emitted from a body or matter whose temperature is higher than zero. The Earth take in thermal energy from the sun as a result of thermal radiation.
Angle of incidence is the angle between a ray of light and the surface of it's perpendicular direction. The sunlight strike the Earth surface at an angle called angle of incidence.
Answer:
In the given example, malonic acid is the competitive inhibitor of succinate.
Explanation:
- When a substance diminishes the velocity of an enzyme catalyzed reaction then it is called inhibitor.
- These inhibitors can bind to enzyme in a reversible or irreversible fashion.
- Reversible inhibitor binds to enzyme by non-covalent bonds.
- There are two types of enzyme inhibition: Competitive and non-competitive.
- Competitive inhibition: We use the term competitive if the inhibitor binds to enzyme reversibly at the same site as substrate would bind.
- Here in this example, both succinate and malonic acid have same binding site on enzyme i.e the active site. Since both can bind to the same site, inhibitor competes with the substrate for that site.
- By increasing the concentration of substrate, we can reverse the effect of competitive inhibitor.
- At a sufficiently high concentration of substrate, V-max can be achieved for the reaction. In the Michaelis-Mentens curve we can observe increase in the Km value in the presence of competitive inhibitor.
Answer:
The frequency of pink flowers will increase to near one over time, while the frequency of white flowers will decrease to near zero.
Explanation:
There are two forces acting as selective pressures.
- Slugs prefer to eat pink-flowering over white-flowering plants → selective pressure against the pink genotype → plants with pink flowers suffer from severe herbivory and are more likely to die.
- Bees prefer to pollinate pink over white flowers → selective pressure favoring the pink genotypes → Plants with pink flowers produce more seeds than plants with white flowers.
When the researcher removes all slugs from the study population, he/she eliminates the selective pressure against the pink genotype, leaving only the force acting in favor of the genotypes. So plants with pink flowers will produce more seeds that will originate more plants with pink flowers. As there is no predator over these plants, they will keep reproducing and growing pink flowers. Over time, the frequency of the pink genotype will increase, while the frequency of the white genotype will decrease.
Fever is the rise in body internal tempreature. <span>The tempreature rises in response to threats such as bacterial or viral infections.
So when fever occurs , it proves that bacterial or viral infections has been killed by the immune system or treated.</span>