<u>Answer</u>: Ionic bond
<u>Explanation</u>:
- An ionic bond is a type of a chemical bond formed by the complete transfer of electrons from one atom to another atom i.e one of the atoms loses its electrons and the other gains it. This results in the formation of 2 oppositely charged ions.
- In sodium chloride, sodium loses one electron from its outermost shell (valence shell) whereas chloride gains it. Due to this sodium gains, a net positive charge and chloride gain a net negative charge.
- So, due to the complete transfer of electrons that takes place from sodium to chloride, the compound generated (Sodium chloride) has an ionic bond.
I believe it’s c
Because we know that equilibrium is a state of REST or BALANCE due to equal action forces ,so you can conclude that the cells are RESTING and at BALANCE when the cell is staying the same size it’s keeping balance.
Answer:
The correct answer is B high levels of lactose and high levels of cyclic AMP.
Explanation:
Lac operon contain 3 regulatory genes and 3 structural genes.In presence of lactose the repressor molecule that is encoded by Lac I gene cannot bound to the operator region.
Bacause the lactose interact with the repressor and change its conformation so that it cannot repress the expression of the structural genes of lac operon.
On the other hand cyclic AMP is a positive regulator of lac operon .The interaction of cyclic AMP with the promoter region of lac operon stimulates the binding of RNA polymerase in the promoter region to boost the expression of structural genes of lac operon such as Lac Z,Lac Y and Lac A.
Photosynthesis is necessary for providing energy for an ecosystem. Plants produce energy by the sun. This allows animals to eat the plants, getting its energy. Then predators can eat those animals. When all of these organisms die, then decomposers eat the decaying matter.
Evaporation and condensation play major roles in the Earth's water cycle and how it functions. When water evaporates from the ocean due to the sun's energy, it rises in the air and condenses as clouds. Wind carries these clouds over land and eventually these cloud condense more by starting to rain. Once the rain falls, it runs off, and some/most of it returns back to the ocean, where the cycle repeats again. Hope this helps!