Answer:
<em>DnaA transcription is shut off upon starvation
</em>
Explanation:
I think so it is molecules
These are the factors that determine a nation's human development index (HDI):
1. Average life and health expectancy
2. Education- literacy rates, and ratio of students who are enrolled in primary, secondary and tertiary levels
3. Individual income- a person’s income against the gross domestic product (GDP)
Difference Between Differentiation<span> & </span>Morphogenesis<span>. Multicellular </span>organisms<span> begin</span>life<span> as single </span>cells<span> called zygotes or spores, depending on the species. ...</span>Differentiation<span> is the process by which the </span>cells<span> take on their specific functions. </span>Morphogenesis<span> is the process by which an </span>organism<span> takes on its shape.
i hope this helps you goodluck :)</span>
Answer:
The Na⁺/Ca²⁺ exchanger, which couples the movement of Na⁺ down its electrochemical gradient with the movement of Ca²⁺ against its electrochemical gradient, is a(n) <u>symporter secondary active transport </u>because Ca²⁺ and Na⁺ move in different directions across the membrane.
Explanation:
The Na⁺/Ca²⁺ exchanger is a secondary active transport because it uses the energy of the Na⁺ that moves in favor of its electrochemical gradient to bring a Ca²⁺ ion against its electrochemical gradient inside the cell. This transport needs the help of a symporter, which is a protein that moves two different ions in the same direction.
