Answer:
A
Explanation:
The mitochondrion is the powerhouse of the cell, and it provides the cell with energy.
Answer: The last choice, Gravitational Pull would become weaker and weight would decrease because when out of Earth's atmosphere, objects (also animals & humans) are able to float because there isn't really a gravitational pull, and because there isn't a gravitational pull, the weight changes and it is less than it was before. But mass never changes.
Life is made possible on our planet because of the interaction of organisms with their environment they and with the other living things in the ecosystem. Two ways that organisms are connected to the nonliving environment are as follows: 1. Living organisms use oxygen 2. Living organisms need water
Answer:
Nitrate
Explanation:
Bacteria can direct their movements according to the presence of particular molecules found in the environment. Chemotaxis enables the movement of bacteria in response to environmental factors, including chemical factors. Nitrate is an anion (i.e., negatively charged) that acts both as an electron acceptor during anaerobic respiration as well as a source of nitrogen during aerobic growth. Bacterial nitrate chemotaxis is a phenomenon that occurs under environmental conditions associated with nitrate starvation (i.e., nutrient stress), during the life cycle of diverse types of bacteria. Moreover, methyl-accepting chemotaxis proteins are receptors widely distributed in the cytoplasmic membrane of bacteria and archaea. These receptors form hexagonal arrays that act in signal transduction pathways by processing environmental inputs (in this case, nitrate conditions).