The right ventricle pumps the oxygen-poor blood to the lungs through the pulmonary valve. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle through the mitral valve. The left ventricle pumps the oxygen-rich blood through the aortic valve out to the rest of the body.
Answer:
Bacteria that are helpful in one place may be harmful in another.
What information in the text supports this statement?
A Heliobacter pylori is a bacterium that causes gastritis (irritation or
inflammation of the stomach lining) and peptic ulcers, diseases which were once
thought to be caused by too much acid.
B Streptococcus salivarius appears to help prevent tooth decay in the mouth
but can be dangerous to people with weakened immune systems if it gets
outside the mouth.
Bacillus subtilis releases toxic chemicals to kill fungus, possibly including
Trichophyton interdigitale and other species that cause athlete's foot.
D Skin, which is our interface with the world, supports a large number of the
human body's most diverse populations of bacteria, including Bacillus subtilis.
Explanation:
True!
A buffer is a solution that helps in resisting the change in the pH when a acid or base is added to it. Cells contain a lot of different organelle inside them. Each organelle performs a different kind of function and thus has a pH different from the cytoplasm, example mitochondria which has a pH lower than that of the cytoplasm. These organelle maintain a pH buffer within them to resist a change in the environment that will hamper the functioning of proteins in it. Cells like the organelle also maintain a pH buffer in their cytoplasm to resist changes in the pH level due to pH changes in the external environment. This is a way in which the cellular homeostasis takes place.
Answer:
the everglades because of the biodiversity
Explanation:
C. I, III & IV
they are all correct except for II because chloroplasts help with photosynthesis which doesn’t happen in animal cells