Answer:
Phospholipids
Explanation:
Phospholipid bilayer is one of the components of the plasma membrane, and is made up of glycerol, two fatty acid tails and a phosphate head group. The head of the layer containing phosphate group is water-loving i.e. hydrophilic, hence, it faces outward attracted to intracellular and extracellular fluid while the tail consisting of two fatty acids is hydrophobic (water-fearing) and hence, faces inward to avoid water.
This property of the phospholipid bilayer is said to be AMPHIPATHIC. This amphipathic nature of the phospholipid component confers semi-permeability upon the plasma membrane as it serves as a chemical barrier, allowing only substances that are small in size and non-polar to move across the membrane without energy (passively).
b. Norepinephrine regulates blood volume and pressure.
c. Epinephrine widens the air passageways in the lungs.
d. Aldosterone helps control metabolism of carbohydrates, fats, and proteins.
Answer is c. Epinephrine widens the air passageways in the lungs.
A pair of adrenal or suprarenal glands are the endocrine glands which are located on the top of the kidneys. Adrenal glands are covered by a connective tissue capsule. They produce a variety of hormones including epinephrine (adrenaline) and the steroids aldosterone and cortisol.
Epinephrine or adrenaline is secreted when a person is under a threat or stress. This hormone quickly responds to stress by widens the air passageways in the lungs. The lungs contain smooth muscle and epinephrine causes smooth muscles to relax. As a result the bronchioles widens that increases the breathing and enhances cellular respiration.
An increase in the amount of greenhouse gases in the atmosphere
A decrease in the amount of air pollution
A cooling effect on Earth’s climate
2. Evaporation occurs when a ____ changes into a ____. *
Solid; liquid
Gas; liquid
Liquid; gas
Solid; gas
3. What is the definition of anaerobic? *
Producing oxygen
Producing methane
Containing bacteria
Lacking oxygen
4. What is the purpose of regularly mixing a compost pile? *
To decrease the temperature in the compost pile
To reduce the amount of oxygen in the compost pile
To prevent the production of methane in the compost pile
All of the above
Answer:
An increase in the amount of greenhouse gases in the atmosphere
Liquid; gas
Lacking oxygen
To decrease the temperature in the compost pile
Explanation:
1. Methane is one of the greenhouse gases. When these gases are released into the atmosphere, they increase the temperature of the earth surface because they trap heat within the earth. Other examples are carbon dioxide and water vapor.
2. Evaporation is a phase change from liquid to gas. During this process, heat is supplied to a liquid. When the molecules of the liquid gain enough energy, they then begin to break off into gaseous form. The reverse process of evaporation is condensation.
3. Anaerobic is a process that lacks oxygen. Aerobic processes are carried out with the availability of oxygen.
4. The reason why compost should be regularly mixed is to decrease the temperature in the compost pile. Portions of the compost can have a higher temperature than other parts. Therefore, mixing the compost will help to redistribute the heat in the compost.
Answer:
Many
Explanation:
Answer: The correct answer is C) Community stability.
Keystone species is an individual species or a group of species of plants and animals, which play a significant role in maintaining the structure of community and the functioning of ecosystem.
This means that when these species are removed from an ecosystem, they will result in the dramatic changes in the structure and functioning of the ecosystem.
Example- In terrestrial habitats, fire ants behaves like a keystone species ( a predator keystone species) that suppresses the number of individuals and species of arthropods, which could have harmful effects in the agriculture.
Answer:
true within limits
Explanation: