Answer:
The correct answer is d.) they have a negative charge
Hydroxide ions, chemical formula OH⁻ are negatively charged anions.
Oxygen is covalently attached with hydrogen in hydroxide ion.
It is important as it can function as base, nucleophile, ligand as well as catalyst.
Chemicals containing hydroxide ions are considered as base. They dissociate in hydroxide ion and their respective cations in aqueous solution.
The Lewis dot structure of hydroxide ion is shown below.
Answer:
Invasive species can change the food web in an ecosystem by destroying or replacing native food sources. The invasive species may provide little to no food value for wildlife. Invasive species can also alter the abundance or diversity of species that are important habitat for native wildlife.
Answer:
Frameshift mutations change the entire protein sequence and messes up the entire amino acid sequence that occurs after mutations, but substitution only changes one single amino acid.
Answer:
The Cardiovascular System
Explanation:
The respiratory system draws air into the lungs. Oxygen diffuses through the walls of the alveoli and across the walls of the capillaries where it enteres the bloodstream. The oxygen molecules are picked up by red blood cells, which are pumped through the blood vessels by the action of the heart. As the red blood cells carrying oxygen pass through capillaries near the cells, oxygen diffuses into the cells.
Answer;
-Freshwater lakes and ponds
Explanation;
-The Paramecium is a unicellular organism that lives in pond water and feeds on mostly bacteria. They have small hair-like structures on their outer edges that are used for motion.They have a contractile vacuole which is also and adaptation.
-The Contractile Vacuole maintains the water pressure of the Paramecium by contracting and releasing water into the environment. This is special because without the contractile vacuole the paramecium wouldn't be able to live if the salt concentration became more in their environment rather than inside of them.