Lipids are not enzymes, or to put it in another way enzymes are protein in nature and not lipids, nucleic acids or carbohydrates. Enzymes are defined as organic substances which speed up biochemical reactions but they remain exactly the way they were before and after the reaction, that is they are not changed, before, during and after the reaction.
Enzymes are a special kind of protein and they exhibit protein characteristics. One of the main characteristics is that they are affected by extreme pH and temperature. When exposed to such, they get denatured. Protein is the only macromolecule that gets denatured and become inactive or damaged permanently
Enzymes work best within a narrow pH and temperature range specific to each enzyme, outside of which they are rendered inactive.
I believe the correct answer is Protein!
B) Osmosis requires cell energy while active transport does not.
C) Neither faciliated diffusion nor osmosis requires cell energy.
D) Diffusion of gases and other small molecules requires no energy on part of the cell.
Answer:
The correct answer would be option B.
Osmosis refers to the passive movement of water down the concentration gradient across a semi-permeable membrane. Thus, it does not require cell energy.
In contrast, active transport requires cell energy as it transports substances across the cell membrane against the concentration gradient, that is, from the region of low concentration to the region of high concentration.
It usually gets energy by ATP hydrolysis.
Examples may include sodium-potassium pump, GLUT transporters in intestinal cells et cetera.
Answer:
Hydrophobic molecules don't like water,just like the membrane.Since the membrane and these signaling molecules are made of the same thing,liquid,they can easily mix together.
Explanation:
Hydrophobic signalling molecules move right through the cell membrane to the target inside the cell.
B.caucus
C. general election
D. party appointment
Answer:
There are 4 types of breezes: land breeze, sea breeze, mountain breeze and valley breeze.
The breeze will originate from an area of high pressure and travel towards/blow in the direction of the area at a lower pressure.
In each case, the name of the breeze indicates where the breeze is blowing from. For instance, the land breeze will blow from the land (at high pressure) to the sea (at lower pressure). A mountain breeze will blow from mountain (at high pressure) towards the valley (at low pressure).
Hope that answers the question, have a great day!
Sea Breeze and Land Breeze are breezes caused by the differential heating and cooling of land and sea. Mountain Breeze and Valley Breeze, on the other hand, are caused by similar processes in mountainous regions.
There are mainly two types of breezes: Sea Breeze and Land Breeze, and two specialized types: Mountain Breeze and Valley Breeze.
Sea Breeze occurs during the day when the sun heats the land quicker than the sea. This creates a low-pressure area over the land and a high-pressure area over the sea, causing the cooler air from the sea (high pressure) to move towards the land (low pressure).
Land Breeze is opposite of the sea breeze, it occurs during the night when the land cools faster than the sea and creates a high-pressure area over land and a low-pressure area over sea, causing the wind to move from land (high pressure) to sea (low pressure).
Mountain Breeze and Valley Breeze are caused by similar processes occurring due to the heating and cooling of mountainous areas. Mountain Breeze occurs at night when the mountain slopes cool faster than the valley resulting in flow of wind down the slopes, while Valley Breeze occurs during the day when the valley heats up faster than the mountain resulting in flow of wind up the slopes.
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b. type of soil in the ecosystem
c. number and kinds of predators in the ecosystem
d. concentration of oxygen in the ecosystem
A biotic factor that affects the size of a population in a specific ecosystem is: c. number and kinds of predators in the ecosystem.
An ecosystem can be defined as a biological community that comprises all living organisms (biotic factors) and the physical environment (abiotic factors) with which they interact.
Basically, some of the essential services that are provided by an ecosystem for the sustenance of life include;
A biotic factor refers to the living organisms that are existing within an ecosystem and their effect on the population living within it. Thus, the number and kinds of predators living in an ecosystem is a biotic factor that would affect the size of its population.
In conclusion, all the other answer options are abiotic factors.
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B. Contain DNA
C. Surround the cell
D. Helps make proteins
5. Which of the following is a function of a vacuole?
A. Packaging of materials
B. Transport of materials
C. Storage of materials
D. Breakdown of materials
A function of the cytoskeleton is - A. Helps a cell keep its shape and a function of a vacuole - C. Storage of materials.
Cytoskeleton
Vacuole:
Thus, A function of the cytoskeleton is - A. Helps a cell keep its shape and a function of a vacuole - C. Storage of materials.
Learn more about vacuoles: