Answer:
Protein
Explanation:
Protein calories is used as energy source when the body lacks fat or carbohydrates.
Answer:
A. it is found on articular surfaces of bone
The era of Enlightenment was characterized by:
- Governments exist to serve the people.
- The social contract allows for consent of the governed.
- The divine right of kings to rule with absolute power is a violation of the social contract.
- Governments that break the social contract must be overthrown.
- All citizens are born with natural rights to life, liberty, and property.
- Use of reason can solve government problems.
<h3>What is an era?</h3>
An era is a time period which is characterized by a certain event or occurrence.
An era is defined by certain way of life or culture both written and spoken.
Some of the various eras of human existence are:
- Middle Ages
- Scientific Revolution
- Enlightenment
- Era of Good Feelings
In conclusion, the various eras of human existence have various characteristics.
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Answer:
a. do not immediately increase in number when placed in a culture
Explanation:
When bacteria placed in a new culture it shows a pattern of growth which is known as sigmoid growth. It has four phases lag, log, stationary, and death.
The lag phase occurs because bacteria do not start dividing immediately just after the placed in the new culture media because bacteria first adapt to the new environment and prepare enzymes needed for metabolizing the new substrate.
As the bacteria pass this lag phase it starts to divide at an exponential rate. Therefore it is true that most bacteria do not increase in number immediately after placed in a new culture.
8. (F) Facilitated diffusion: For water to travel across the cell membrane at a substantial rate, the water molecules travel through protein channels known as aquaporins.
9. (S) Simple diffusion: While water molecules are polar, they are also very small. One fact not mentioned in the video is that some water molecules are able to squeeze directly through the phospholipid bilayer due to their small size.
10. (S) Simple diffusion: Charged ions are traveling through a cell membrane with the concentration gradient.
11. (A) Active transport: Cells lining the gut need to take in glucose, but at a certain time, the concentration of extracellular glucose is lower than the concentration already stored in the cells.
12.(F) Facilitated diffusion: At a certain time, glucose is in a high concentration outside of a cell and needs to travel through the membrane into the cell.
The above choices are made based on the basic definitions of active transport, facilitated diffusion and simple diffusion.
Active transport: The movement of the ions or molecules to a region having higher concentration across the membrane requiring the help of energy or enzymes is active transport.
Facilitated diffusion: This type of transport involves passive movement of the molecules or is a type of passive transport where the movement of the molecules takes place from higher to lower concentration region occurs with the aid of a carrier molecule such as a transport or carrier protein.
Simple diffusion: This process involves movement of ions or molecules from high concentration region to low concentration region through a semipermeable membrane.
