I think the correct answer among the choices listed above is option B. The smallest unit of a compound is called a molecule. Molecules are made up of atoms that are held together by bonds which is a result by sharing or exchange of electrons.
Yes it is.
Carbon dioxide goes through plants, which they turn into oxygen. Humans and animals take in the oxygen and breathe out carbon dioxide. Then it repeats.
Answer: Exhaustion stage
G<span>eneral adaptation syndrome (</span><span>GAS) is the three-stage process that predicts the physiological changes the body goes through when stressed. It </span>was proposed by the researcher Hans Selye.
<span>The three stages are: </span>
<span>1. </span>alarm stage, which provides a burst of energy
<span>2. </span>resistance stage<span>, the body attempts to resist or adapt to the stressor and </span>
<span>3. </span>exhaustion stage<span> is where energy is depleted and <span>the body no longer functions normally due to chronic activation of the stress response. </span></span>
Answer:
- Only some molecules move from a higher concentration to a lower concentration.
Explanation:
Selective permeability of the membrane means that membrane regulates which molecules (ions, substances) and how much of them can pass through it. Permeabilty of the membrane is determinated by its structure (hydrophobic heads and hydrophilic tails, cholesterol), temperature
The simplest form of transport through membrane is diffusion, passive transport of the molecule down its concentration gradient 9from higher to lower concentration). Some molecules can move down their concentration gradients directly, some have to pass through membrane proteins in a process called facilitated diffusion while others require energy and use active transport.
