Answer:
It is either A or D, im not sure what the bubbles represent either o2 or co2.
Explanation:
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).
Answer:
K+
Explanation:
Leak channels are the gated channels that randomly open and close. The plasma membranes have many more potassium ion (K+) leak channels than the leak channels for other ions such as sodium ion. Also, the potassium ion leak channels are leakier than the sodium leak channels and allow exit of more and more K+ from the neurons. This makes the inside the neuron negative at rest and outside becomes more positive. In this way, the leakage of K+ across the K+ leak channels is mainly responsible for maintaining the resting potential.
Answer:
Archaebacteria are found in very harsh conditions such as in the volcanic vents or at the bottom of the sea. They are often called "extremophiles". They can easily survive in such extreme environment as sea vents releasing sulfide-rich gases, hot springs, or boiling mud around volcanoes.
Explanation:
Answer:
Gas Exchange
Explanation:
It is diffusion that occurs in moist membranes