Describe how facilitated diffusion helps large molecules cross cell membranes. What kinds of proteins are involved?
Answers
Yeah yeah so :D,
Large polar molecules can only cross the membrane with the help of protein named channel protein and carrier protein.
So, this both proteins act like a gate, the large molecules enter the protein and the protein let the large molecules in to the membrane. (see the picture so that you can understand more, its carrier protein)
the only difference between channel protein and carrier protein is, channel proteins has fixed shape while carrier protein can flip.
Large or polar molecules like glucose can't pass through the phospholipid bilayer. Smaller molecules usually diffuse freely for example water and CO2.
Large molecules like glucose diffuse through channels. This is a form of passive transport. Carrier proteins are involved.
Related Questions
what is the theory of evolution built upon?
Answers
WILL GIVE BRAINLIEST AND 83 POINTS TO WHOEVER CAN ANSWER FIRST AND CORRECTLY
What is the impact of nitrous oxide on the environment?(please list more than one)
Answers
Here are the answers:
The impact of nitrogen dioxide on ecosystems High levels of NOx can have a negative effect on vegetation, including leaf damage and reduced growth. It can make vegetation more susceptible to disease and frost damage.
Also, it polutes the earth....
I can't think of any more sorry :P
When an organ has a disease, it cannot function properly. What effect might a disease that affects the small intestine have on a person?
The person might be unable to swallow.
The person might not be able to get rid of waste.
Nutrient molecules from digested food may not be absorbed into their bloodstream.
Water from digested food may not be absorbed into their bloodstream.
Please help. Thanks!
Answers
its C
Explanation:
because it makes sence and i hope it is right
An ecosystem usually contains a single kind of habitat.
True or false
Answers
explain how ATP can be compared to a rechargeable battery.
Answers
Explanation:
when it's fully charged it's a ATP and when it's runs down it's ADP
and there are times when the cells need more energy and splits off another phosphate so it goes from ADP adenoside di-phosphate, to AMP, adenosine mono-phosphate
and there you have it
Not too sure and don't wanna get it wrong
Answers
5. It is winter and everyone in your family has the flu virus but you. Which 10 points
body systems work together to help prevent you from catching the flu?
The cardiovascular system transports the disease fighting cells around the body, the
respiratory system warms the air and weakens the flu virus.
The cardiovascular system transports the disease fighting cells around the body, the
immune system recognizes and kills the pathogen before it can make you sick.
The muscular system creates the disease fighting cells responsible for fighting off
diseases; the excretory system removes pathogens along with liquid waste before it
can make you sick.
The respiratory system warms the air and weakens the flu virus; the immune system
recognizes and kills the pathogen before it can make you sick
Answers
Answer:
immune system recognizes and kills the pathogen before it can make you sick
Explanation:
the respiratory and cardiovascular system mostly just spread the disease
the muscular and excretory system have no part in fighting the disease
so the only logical answer left would be the immune system
cellular respiration is a three-part process. Number the processes in the correct order.
Answers
Answer:
Cellular respiration occurs in three stages: glycolysis, the Krebs cycle, and electron transport.
Explanation:
...need thanks and make me brainiest if it helps you
Answer:
my mom
my dad
my sister
Explanation:
The nucleus has a system of _____ embedded within its outer membrane which allows communication between the nucleus interior and the cytoplasm.
Answers
Answer:
pores
Explanation:
The nucleus consists of "nuclear pores" on its outer membrane. Each of these are surrounded by nuclear pore complex. It allows the pore to regulate the movement of molecules between the nucleus and the cytoplasm. It allows small particles to pass through such as ribosomal proteins. It prevents most large particles (except for histone) from passing through; thus, it is selective in nature. This function of the pores clearly shows that it allows communication to occur between the nucleus interior and the cytoplasm.
BellRingers
per 21-22
What medium does sound waves travel the fastest
In (solid, liquid, or gas) why？
Answers
Answer:
Sound travels fastest in solids and slowest in air. Water is in between. This is because the particles in solids are closer together than the particles in liquids or gases, and the particles in liquids are closer together than the particles in gases. The tighter particles are packed in a space, they collide more frequently. This allows sound, which is simply the combined collisions of particles, to travel fastest in solids. So, to reiterate, sound travels fastest in solids, then water, and slowest in air.
In heterotrophs, energy for the life processes comes from the chemical energy stored in bonds of?
A.water molecules
B. Oxygen molecules
C. Organic compounds
D.inorganic compounds
Answers
Answer:
Humans get there energy primarily from glucose I believe. We break down glucose to get ATP (Adenosine Triphosphate) which is then used to supply energy to our cells in order to function.
Explanation:
In heterotrophs, the energy for the life processes comes from the chemical energy stored in bonds of organic compounds (Option C). Heterotrophs are organisms that cannot synthesize their own food.
Heterotrophs obtain energy by breaking down organic compounds such as carbohydrates, lipids and proteins.For example, during cellular respiration, aerobic cells obtain the energy stored in the chemical bonds of organic molecules is used to synthesize ATP, the energy coin of cells.Heterotrophic organisms can also produce energy (ATP) in anaerobic conditions by a process known as fermentation.In conclusion, in heterotrophs, the energy for the life processes comes from the chemical energy stored in bonds of organic compounds (Option C).
Learn more in:
https://brainly.com/question/19064818
How is energy released from a molecule of ATP?
Answers
Answer:
When ATP is broken down to ADP
Explanation:
Energy is released from a molecule of ATP when the substance is broken down to ADP
ATP is the energy currency of a cell. It is called Adenosine Triphosphate
When a phosphate is removed, it become ADP - Adenosine Disphosphate.
In like manner, the breaking down releases inherent chemical energy and converts it to other forms of energy.
This is how the body system derives sufficient amount of energy for every of its activities.
When an organism undergoes cellular respiration, this is the process that is in play to release energy needed for the body to function
I"LL GIVE BRAINlIEST
Translate the mRNA sequence into the amino acid sequence.
Original DNA Sequence: T A C A C C T T G A C T
mRNA Sequence: A U G U G G A A C U G A
Amino acids: ??? ( help! )
Once again, I'll give brainliest !
* please be respectful to not answer if you don't know what the question is asking, that is just taking my points and not giving the chance to those who know :')
Answers
Answer: I don’t know how to comment but thanks for the answer on my recent question
Explanation:
Don’t report me
Many small freshwater organisms have a structure called a contractile vacuole, which pumps water out their body. Explain how this process is an example of active transport.
Answers
Answer:
1: The process of osmosis would cause water to move into the cells causing them to swell and possibly burst. Many freshwater one celled organisms have structures called contractile vacuoles. These structures collect and pump out excess water that accumulates in the cell.
2: During active transport, a protein pump uses energy, in the form of ATP, to move molecules from an area of low concentration to an area of high concentration. An example of active transport is the sodium-potassium pump, which moves sodium ions to the outside of the cell and potassium ions to the inside of the cell.
Explanation:
Which of the following is NOT a concept related to photosynthesis?
A
occurs in the roots
B
allows plants to grow
C
plants making a waste product
D
occurs in the chloroplast
Answers
Answer:
the answer is C
Explanation:
c is the correct answer
The repeating monomers that form a Nucleic Acid.
A.
fatty acids
B.
nucleotides
C.
monosaccharides
D.
amino acids
Answers
help asap pleaseeee ? :))
Answers
Answer:
B. 50%
Explanation:
See work attached.
We are looking for percentage of offspring that will have Hh.
please click the heart button to thank me for my efforts! :)
have a good day and happy holidays!!
110. Why is a mushroom considered a heterotroph?
A. It creates different types of food.
B. It makes food through photosynthesis.
C. It makes food through chemosynthesis.
D. It obtains nutrients from its environment.
Answers
3.
What effect do glaciers have on plant life?
Glaciers bring quantities of minerals beneficial to plants as the water runs off melting ice.
Glaciers bring quantities of minerals that choke plant life as the water runs off melting ice.
Glaciers has no effect on plant life other than helping distribute necessary water.
Glacial flooding is destructive to plant life as silt builds in rivers.
Answers
Answer:
Glaciers bring quantities of minerals beneficial to plants as the water runs off melting ice.
Explanation:
Glaciers are natural reservoirs of water and minerals that may persist to dry conditions during the summer season. Ice melting provides water and minerals during the warm season, which is therefore critical for plants living in dry summer environments. Moreover, it is well-known that the 'melt-water' (i.e., water released by the melting of glacial ice) also affects downstream stream water temperatures, creating a microhabitat that may be beneficial to the life of plant species.
Eutrophication occurs when excess nutrients are supplied to a region, leading to an algae bloom and ultimately
A) ocean deoxygenation
B) coral bleaching
c) ocean acidification
D) overfishing
Answers
Answer:
A) ocean deoxygenation
Explanation:
Eutrophication (eutrophication) begins when fertilizers (usually washed away by rain) reach the water from fields and other agroecosystems. Fertilizers are rich in phosphates and nitrates, which are otherwise a limiting factor for the flourishing of life in water.
With an excess of these salts, plants, especially algae, often begin to flourish. Then the number of dead algae increases, which are then decomposed by saprophytes, consuming oxygen. Thus, the concentration of oxygen in the water decreases, and thus there is suffocation and mass death of aquatic organisms that consume oxygen in the process of respiration.
True or False: A specific enzyme can be used to catalyze ANY chemical reaction.
Answers
Answer:
true
Explanation:
A particular enzyme can function over a wide range of temperature and pH. Temperature can change the activity of an enzyme.
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
Answers
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 tectonic plate boundary can only produce and earthquake?
A. Convergent
B. Divergent
C. Transform
D. Oceanic
help me help me help me help me please
Answers
Answer:
B. Divergent
Explanation:
Along these boundaries, earthquakes are common and magma rises from the Earth's mantle to the surface, solidifying to create new oceanic crust :)
An example of two organisms living
together is...
A. a bird gliding on wind currents.
B. a flower opening in the morning.
C. a dandelion growing in your lawn.
Answers
Answer:
c
i think
Explanation:
Which of the following is true?
A.
Eukaryotes can be unicellular or multicellular.
B.
Eukaryotes are all unicellular.
C.
Eukaryotes are all multicellular.
D.
Eukaryotes do not contain cells.
Answers
Answer:
A. Eukaryotes can be unicellular or multicellular.
Explanation:
procaryotes can only be unicellular but eukaryotes can be both.
Choose
A neuron is said to be resting? *
________
When it is not transmitting an impulse
When it is transmitting an impulse
When the inner surface of the neuron is more positive
All are correct
Answers
Explanation:
i think all are correct
i guess?
when the inner surface of the neuron is more positive
How might a healthy, actively hunting wolf pack impact the elk herd population density? Explain your answer
Answers
9. You and your friends have enjoyed a fun time at Stevie B's eating salad, 10 points
pasta, and lots of pizza. Which body systems will work together to get
the nutrients from the food to the body cells?
Answers
Answer:
A)
Explanation:
Legit the entire thing is full of BS answers. No, your digestive system DEFINITELY does not create red blood cells, your bone marrow does.
Why can't all the energy in one trophic level be transferred to the next?
Answers
Answer:
Energy decreases as it moves up trophic levels because energy is lost as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level. ... A food chain can usually sustain no more than six energy transfers before all the energy is used up.
Explanation:
The chart shows codons and their corresponding amino acid. What amino acid is represented by the codon CAC
Answers
By looking at this chart you can see that the codon CAC codes for histidine
