Materials in cells may be transported by passive or active processes, both of which may involve concentration gradients, the phospholipid bilayer, and membrane proteins. Part A: Compare the role of concentration gradients in passive and active transport. Part B: Compare the role of the phospholipid bilayer in passive and active transport. Part C: Compare the role of membrane proteins in passive and active transport.
Answer:
Concentration gradients:
Passive transport: In favor ----> Simple Diffusion and facilitated diffusionActive transport: AgainstPhospholipid bilayer
Passive transport: Small particles or molecules can pass through the membrane----> Simple diffusionActive transport: Big particles or molecules need proteins to pass from one side to the other of the membraneMembrane proteins
Passive transport: Channel proteins in favor of electrochemical gradient---> Facilitated diffusionActive transport: Transporters or carrier proteins help molecules to pass to the other side of the membrane the electrochemical gradient.Explanation:
Diffusion: Refers to the pass of some small polar hydrophilic molecules through the lipidic bilayer. There are momentary membrane openings that allow small molecules to freely move from one side to the other in favor of the electrochemical gradient. These openings are the result of the lipids movements. The membrane permeability depends on the size of the molecule. The bigger the molecule is, the less capacity to cross the membrane it has. Diffusion is a very slow process, and to be efficient requires short distances and pronounced concentration gradients.
Facilitated diffusion: Occurs when big hydrophilic molecules cannot move freely across the membrane. In these situations, channel proteins are in charge of passive transport. Facilitated diffusion also occurs in favor of electrochemical gradients, meaning that molecules move from the more concentrated side to the less concentrated side.
Simple diffusion and facilitated diffusion are passive transport processes because the cell does not need any energy to make it happen.
Active transport is against the electrochemical gradient, so it does need energy to happen. Molecules move from a lower concentration side to a higher concentration side. This process is always in charge of carrier proteins. In primary active transport, the energy needed comes from the ATP molecule. In secondary active transport, the energy comes from the membrane electric potential.
Transmembrane proteins act in active and passive transport, connecting cells, and participating in signal transduction.
Channel proteins act by passive transport (these proteins do not need energy to carry in or out substances. They do it according to an electrochemical gradient) and carrier proteins act during active transport (these proteins do need the energy to transport substances because they do it against an electrochemical gradient). These transmembrane proteins carry in those substances needed by the cells to properly perform their activities, and they can also carry out waste substances.
In eukaryotic cells, mRNA is made in the
a
nucleus
b
cytoplasm
Answer:
A I think I may be wrong 17 more days until Christmas
Answer:
The answer is A nucleus
Explanation:
The process of making mRNA from DNA is called transcription. It occurs in the nucleus. The mRNA moves the synthesis of proteins, which occurs in the cytoplasm. mRNA formed in the nucleus is moved out of the nucleus and into the cytoplasm where it attaches to the ribosomes.
The somatic motor division consists of somatic motor neurons that innervate cardiac, smooth, and skeletal muscle cells. The somatic motor division consists of somatic motor neurons that innervate cardiac, smooth, and skeletal muscle cells. True False
Answer: FALSE
Explanation:
The nervous system is the system that detects and responds to changes inside and outside the body. This system consists of the brain, the spinal cord and peripheral nerves. The structure and organisation of the tissues that form these components enables rapid communication between different parts of the body.
Parts of the nervous system includes:
--> Central Nervous System ( consists of the brain and spinal cord)
--> Peripheral Nervous System ( consists of nerves outside the brain and spinal cord).The two functional parts of the peripheral nervous system are made up of the sensory (afferent) and motor (efferent). The motor division is involved in activities that are voluntary (somatic nervous system) and involuntary (autonomic nervous system).
The somatic motor division consists of somatic motor neurons that innervates ONLY the SKELETAL MUSCLE for its voluntary actions while the autonomic motor neurons innervates the cardiac and smooth muscles. Therefore the statement is FALSE
Use the drop-down menus to complete the statement. The strongest force is the force, while the weakest is the force.
Answer:
Strongest is nuclear force while weakest is the gravitational force.
Explanation:
The strongest force is the force of nuclear force while the weakest force is the gravitational force. nuclear force is considered as the strongest force because it binds the fundamental particles i. e. electron, proton and neutron of matter with each other to form larger particles while on the other hand, gravitational force is considered as the weakest force because gravitational force is 1040 times weaker than the electromagnetic force.
Answer:
Strong force and Gravitational force
Explanation:
In a certain plant, flowers can be red, white, or pink. a. Is this an example of codominance or incomplete dominance? Show the letters you would use to represent each color.
what two materials are part of soil?
a) pieces of metal
b) once-living matter
c) small bits of rock
d) trees and grass
Answer: Once Living Matter, Small bits of rock
Explanation: CANVAS VERIFIED
Answer:
Small bits of rock and once living matter
Explanation:
Name two actions
that you could take to reduce elephant poaching.
Answer:
increase protection and communal conservancies
Explanation:
increase protection this one is a fairly basic solution, there are many different ways of implementing it. Some park protection agencies in Africa use drones to keep watch at night, while others have sought out military tactics in order to stop black market poachers. Communal conservancies despite global trends, Namibia has done something extraordinary. Between the years of 2002 and 2013, the elephant population has grown from 9,600 to 16,000. The government of Namibia has policies in action where local communities can establish wildlife tourism, and where communities can keep vast amounts of the revenue made.
8. Which system works most directly with the nervous systen to move
the body?
10 points
A-immune
B-respirato
C-digestive
D- muscular
Answer:
D
Explanation:
Muscular system works most directly with the nervous system to move the body
Please help!!!!!! Happy holidays
Answer:
a and thanx u to
Explanation:
PLEASE HELP.. i have a time limit but if you give a correct answer i’ll give that brain thing TYSM
Answer:
#1, #2, and #4 are correct. #3 is incorrect.
G6PD deficiency is an inherited condition in which the body doesn't have enough of the enzyme glucose-6-phosphate dehydrogenase niece or G6PD which helps red blood cells function normally. G6PD deficiency is most common in African-American males. When females are carries. It is known to Africa in the Mediterranean basin are high risk areas for the infectious disease malaria. Researchers have found evidence that the fair site that causes malaria does not survive well in G6PD deficient cells. How do you explain this
Answer:
The environment is not favorable for malarial parasite.
Explanation:
The malaria does not survive well in G6PD deficient cells because the malarial parasite named plasmodium needs blood cells for its survival but in G6PD deficient cells, red blood cells does not perform their function normally which make environment unfavorable for the malarial parasite so that's why we can say that malaria does not survive well in G6PD deficient cells.
Which statement BEST describes how cancers are classified? A. Cancers are classified according to the type of tissue they affect. B. Cancers are classified according to the rate at which they grow. C. Cancers are classified by how many organs they affect. D. Cancers are classified by the size of the cells that are involved.
Answer:
A
Explanation:
Took bio before?
Answer:
A
Explanation:
what element is missing from glucose and cellulose molecules but must still be consumed by urchins when they eat the kelp in order to make their protein
The element that is missing from glucose and cellulose molecules but must still be consumed by urchins when they eat the kelp in order to make their protein is carbon. The correct option is a.
What is protein?Protein is a macromolecule that is necessary for the growth and development of the body. They are made up of amino acids.
Carbon is an element or a substance that is present on earth in different forms full stop carbon is present in two forms on the earth, one is black and heart solid and one is gray and soft.
Another element that produces different compounds when carbon reacts with oxygen is produced carbon dioxide, which is a very harmful gas for the earth and human beings. Sea urchins need carbon dioxide to make proteins.
Therefore, the correct option is a, Carbon.
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The question is incomplete. Your most probably complete question is given below:
Carbon
Hydrogen
Nitrogen
Oxygen
How important is knowledge of advances in science and technology for people of different professions?
Answer:
science and technology has played in improving the life conditions across the globe.
Explanation:
science and technology helps to do reaserch of different species and elements. I don't know much
Which of the following are likely to form an ionic bond?
O copper atoms
o hydrogen and oxygen atoms
O copper and fluorine atoms
hydrogen atoms
A student carried out two food tests on solution F to determine what food groups it
contains.
Test2
Benediction
lodine
Blue colour
Solution
Heat
Solution
Back colour
What nutrients does solution F contain?
А
Starch only
Starch and protein
B
с
Starch and Vitamin C
D
Protein only
Answer:
A- starch only
Explanation:
when person adds Benedict's solution, it says blue, this shows a negative result.
when person adds iodine solution, it turns black, which shows a positive result for starch.
so solution contains only starch.
hope it helps!!
Which part of the cell theory do these results most support:
[tex]\huge\textbf{Cell Theory}[/tex]
the Cell Theory was give by German scientists, Schleiden and T.Shwan in 1839. It stated that,
All organism are composed of one or more cellsThe cell is the structural and functional unit of life It is a de novo structure, that means it COULD arise from non living thing which was incorrect.It was corrected by the German pathologist Rudolf Virchow in 1855. He made a convincing case, corrected and added the third point of the cell theory. It is,
Cells can arise only by a division of pre-existing cell. It is NOT a de novo structure.Cell theory brought a great evolution in the field of biology which established the function of organism is the result of activities and interaction of the cell units.
_____________________________________[tex]\huge\textbf{Question:}[/tex]
Flask 1: It is observed that there are no micro-organism, this is because the meat is sealed and no micro-organism could enter through it.Flask 2: It is observed that there are micro-organism present because meat is not sealed but open.Flask 3: As the S tube is used, the micro-organism are not able to reach the meat because of the curvy pathThese observations support the point that cells could arise only by a division of pre-existing alive cells because in Flask 1 when there were no micro-organism present so there was no organisms found so no micro-organism arised, In flask 3 the S tube was used so no micro-organism could reach the meat thus there were no organism there which could divide to reproduce. The flask 2 was open, so the micro organisms reached the meat so they divided which means Cells can only arise by a division of pre-existing cells.
_____________________________________Best Regards,'Borz'All these experiments explain that cells only form from preexisting cells, as microbes give rise to the synthesis of new organisms, and this explains the cell theory through all these experiments.
What is cell theory?Cell theory is a fundamental concept in biology that describes the basic unit of life and its properties, and here in flask 1, if the meat is properly sealed and handled in a sterile environment, it is possible that no microorganisms could enter through it and explain that no growth is seen as no microbes are present. In flask 2, as the meat is open and exposed, it is more likely that microorganisms could be present and potentially grow. Microorganisms are ubiquitous in the environment and can be found in soil, water, air, and on surfaces such as countertops, utensils, and cutting boards. The use of an S tube could potentially reduce the amount of microorganisms that reach the meat due to the curvy path that is present in flask 3.
Hence, all these experiments explain that cells only form from preexisting cells, as microbes give rise to the synthesis of new organisms.
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Why can't Adenine bond with Guanine?
Answer:
it has to do with the structure of the nitrogenous bases and the hydrogen bondes the form between them.
Explanation:
1) How many Amino Acids are there? How do we obtain Amino Acids?
2) Which type of fat is generally healthier for you? Why?
3) What elements are found in proteins?
4) What elements are found in lipids?
COMPLETE SENTENCES PLEASE ILL GIVE BRAINLIEST
1) There are 20 amino acids. The best sources of essential amino acids are animal proteins like meat, eggs and poultry.
2) Unsaturated fat is generally healthier for you. Unsaturated fats help lower a person's levels of LDL cholesterol, reduce inflammation, and build stronger cell membranes in the body.
3) Elements found in proteins are carbon, hydrogen, oxygen, nitrogen and sulfur.
4) Elements found in lipids are hydrogen, sulfur, carbon, nitrogen, oxygen and phosphorus
Would you rather have everything you draw become real but be permanently terrible at drawing or be able to fly but only as fast as you can walk?
Answer: I would want to be able to fkly only as fast as I can walk
Explanation: I wouldn't want my drawings to be my nightmare. What about you?
Answer:
2nd option
Explanation:
Yes i Am from Shadow ridge
The mealworms gained mass and the potato lost mass. The
mealworms got their mass from the_________
Fill in da blank
what is the effect of ocean currents on the east coast continents?
Answer: As these currents flow along the edges of continents, they affect the temperature of the coastal regions. Along the east coast of the U.S., the Gulf Stream carries warm water from the equatorial region to the North Atlantic Ocean, keeping the southeast coast relatively warm.
Explanation:
PLEASE HELP URGENT.!!!! 50 POINTS!!!
Drag each image to the correct location on the diagram.
An organism that has been observed in the Atacama Desert undergoes mutations in its genome. The trait caused by the mutation is beneficial to the species’ survival. Complete the model to show the process of natural selection during the third, fourth, and fifth generations.
3. The period of cell division is called
a.
e. interphase
f. cytokinesis
g. mitosis
h. protoplasm
Answer:
g. mitosis
Explanation:
mitosis is when cells divide
Which of these is a heterotroph?
A. plant
B. producer
C. consumer
D. phytoplankton
Answer:
D
Explanation:
Answer:
c. Consumer ! Happy holidays
How do Rosa's body systems work together to get the molecules she needs into her cells?
Answer:
Digestive system and circulatory system.
Explanation:
Rosa's body systems such as digestive system and circulatory system etc work together to get the molecules she needs into her cells. the digestive system provides molecules needed by the cell from break down of food molecules in order to generate energy in the form of ATP while on the other hand, circulatory system is responsible for the transportation of molecules or substances from one part to another part of the body.
Carbohydrates main functions
Answer:
They provide you with energy for daily tasks and are the primary fuel source for your brain's high energy demands.
Explanation:
What is the function of ATP, and why is it important?
ATP(adenosine tri-phosphate) stores energy between it's 2nd and 3rd phosphate groups. When the 3rd phosphate group is released ADP(adenosine mono-phosphate) is created and energy is being released. This molecule is important because it stores the energy from cellular respiration and most cellular processes require the energy released by ATP.
Worth 20 points
Pleas help
Answer:
in high pressure it moves counterclockwise in low pressure it moves clockwise
Explanation:
Macy is looking for groundwater. She will most likely find it
in an area with limestone deposits,below a layer of shale,under a mountain,
in a desert with no plants