Answer:
The correct option is B. Activation energy
Explanation:
The activation energy is usually used to designate the minimum energy necessary for a given chemical reaction to occur, that is, the basic requirement for the reaction to proceed.
For a reaction to occur between two molecules, they must collide in the correct orientation and have a minimum amount of energy. As the molecules approach, their electron clouds are rejected. This requires energy (activation energy) and comes from the heat of the system, that, is, from translational, vibrational energy, etc of each molecule. If the energy is sufficient, the repulsion is overcome and the molecules are close enough for a rearrangement of the bonds of the molecules.
The concept of Activation energy was introduced by Arrhenius in 1889. Arrhenius suggested that molecules must prossess a minimum amount of energy to react. That energy comes from the kinetic energy of the clliding molecules. Kinetic energy serves to cause reactions, but if the molecules move very slowly, the molecules will only bounce when they collide with other molecules and the reaction does not happen. In order for the molecules to react, they must have a total kinetic energy that is equal to or greater than a certain minimum value of energy called activation energy.
Answer:
n stage 13, all four limb buds are present. In stage 13, the upper limb buds resemble flippers. In stage 23, the upper limb shows well-formed arm, elbow, wrist, and fingers. In stage 23, the lower limb shows well-formed toes, feet, and knees.
Explanation:
Answer:
Because cloning is used to produce transgenic or gene-edited animals, many perceived concerns regarding cloning are actually concerns about these genetically altered animals, which present a completely different set of potential hazards to animal and human health and the environment. The cloning of humans remains universally condemned, primarily for the associated psychological, social, and physiological risks. There are also concerns that cloning promotes eugenics, the idea that humanity could be improved through the selection of individuals possessing desired traits.
Explanation:
Hope this helps...Boo...and dont get offended by me callin u boo.....my bsf Livvv does it all the time.....
Answer:
A Punnett Square is is a square diagram that is used to predict the genotypes of a particular cross or breeding experiment.
Explanation: