Answer:
The main difference between microtubules and microfilaments is that microtubules are long, hollow cylinders, made up of tubulin protein units whereas microfilaments are double-stranded helical polymers, made up of actin proteins.
what are the arguments against regulations aimed at reducing water pollution
Answer:
There are numerous forms of pollution and environmental problems that human beings have been causing since the beginning of the industrial revolution and, in particular, since the second half of the last century. Pollution without borders associated with all human activities and which, along with other serious problems, is degrading all ecosystems and contributing to climate change whose consequences we are already experiencing. The costs of this environmental degradation have not been taken into consideration until recently, but it is beginning to be understood that they must be incorporated in the evaluation of any project; They cannot be “outsourced”, as has been done, because it is absolutely unsustainable.
Explanation:
Answer:
The correct is D
Explanation
I know it is correct because i am doing it.
And i need help for this one
Recycling and composting are actions that individuals can take to __________.
A.
reduce water pollution
B.
reduce the amount of trash in landfills
C.
improve our energy efficiency
D.
reduce air pollution
And can you make me brainliest
what is the structure of a fatty acid
Answer:
Generally, a fatty acid consists of a straight chain of an even number of carbon atoms, with hydrogen atoms along the length of the chain and at one end of the chain and a carboxyl group (―COOH) at the other end. It is that carboxyl group that makes it an acid (carboxylic acid.
Explanation:
What form of energy is apded to make photosynthesis happen?
O A. Chemical energy
O B. Solar energy
O C. Electron energy
O D. Proton energy
please help ASAP !!
Cholesterol has a much higher profile than the other lipids because of its association with heart disease. Despite its lethal reputation with the public, cholesterol is vital to the body: it maintains proper fluidity of animal cell membranes and is the precursor of steroid hormones such as progesterone, testosterone, estradiol, and cortisol. Cholesterol is synthesized in the liver and, to a lesser extent, in other tissues. The rate of its synthesis is highly responsive to the cellular level of cholesterol. Cholesterol synthesis can be effectively blocked by a class of compounds called statins. The market of the statins is estimated at $20 billions.
Explain the mechanism of action of statins.
Answer and Explanation:
The mechanism of action of statins begins with the inhibition of a protein called HMG-CoA reductase, allowing its substrate to accumulate in the body and promote cholesterol reduction. At that moment, a transporter called OATP (Organic Anion Transporting Polypeptides) takes statins to the epatic tissue where they will be transformed and metabolized until they are eliminated through bile. This elimination is influenced by the P-glycoprotein, which is the main cause of the efflix presented by the bili. This process can get help from other molecules like some protease inhibitors, digoxin and cyclosporine.
Why doesn't being surrounded by gallons of water in a swimming pool cause sodium imbalances and/or water intoxication?
The pool water is isotonic with your internal body fluids.
It is impossible to sweat in a swimming pool; therefore, your body loses no sodium.
Your skin is not as permeable as the lining of your digestive system.
The chlorine in the pool water prevents your body from losing sodium to the surrounding environment, or Swimming in pool water can cause a sodium imbalance; this is why swimming in the ocean is preferable.
Answer:
The correct answer is: Your skin is not as permeable as the lining of your digestive system.
Explanation:
Pool water is mostly composed of water with some chlorine in it. This is why it could never be true that pool water is isotonic with a person's internal fluids, where half of the osmotic pressure is given by sodium. For pool water to be isotonic with our internal body fluids, it should be a 0.9% NaCl solution.
The chloride in the pool water has no special properties that make your body not lose electrolytes.
The reason why swimming in a pool doesn't cause sodium imbalances is because the skin is not as permeable as the lining in our digestive system. We don't absorb water or ions through our skin. The only way we can get more water and electrolytes in our bodies is by ingesting them when drinking water or eating food. Then, our digestive system absorbs it, and after that, the kidneys dispose of the excess water or electrolytes.
Where is the brain of a rotifer located?
Answer:
Mastax
Explanation:
Rotifers have a small brain, located just above the mastax, from which a number of nerves extend throughout the body.
Answer:
Just above the mastax
Explanation:
Rotifers have a small brain, located just above the mastax, from which a number of nerves extend throughout the body. The number of nerves varies among species, although the nervous system usually has a simple layout.
14. What takes place in ribosomes?
Answer:
Ribosomes are the sites in a cell in which protein synthesis takes place. ... Within the ribosome, the rrna molecules direct the catalytic steps of protein synthesis the stitching together of amino acids to make a protein molecule. In fact, rrna is sometimes called a ribozyme or catalytic RNA to reflect this function.
Explanation:
25. A student measures the distance from a bridge
to a rock every day for a week
2-
Distance
from
1
Bridge
Meter
O
2
.
3
Time (Days)
What is indicated by the graph of the student's
data?
(1) No change in time or distance took place
(2) As distance decreased, time increased
(3) As distance increased, time decreased
(4) As time increased, distance remained
the same
02
Answer:
(4) As time increased, distance remained
the same
Explanation:
The graph shows that the student measures equal distance everyday from the bridge to the rock for 7 days.
Everyday has an equal distance measured by the student all through the week.
Let's say the point on the vertical axis which represents distance measured is about 1.5 meters. It means that, for day 1, he measures 1.5 meters, day 2, he measured 1.5 meters, by day 3 another 1.5 meters. Same he does for 7 days. For the first 3 days, he would have measured 1.5 m × 3 = 4.5 meters.
This means that, as time (days) increased, distance measured each day remains the same.
Which image represents the step in mitosis when chromosomes condense and spindle fibers form?
Answer:
The process you described is called prophase
Explanation:
Since you dId not provide the pictures, this is what it's supposed to look like.
Answer:
A
Explanation:
The photo shows a swimmer pushing off the side of a pool.
What do the arrows in the photo represent?
A. Gravity
B. An action-reaction force pair
C. Balanced forces
D. Buoyancy
When the swimmer starts swimming, it indicates the action-reaction force pair that is present in Option B as the force that is applied by the swimmer on the wall of the swimming pool, and the same force is applied by the wall towards the swimmer.
What is the action-reaction force?This action-reaction force is explained by Newton and is also known as Newton's third law, where he explains that every action that is taken shows an equal and opposite force, such as here the swimmer gets the exact same force that he applied on the wall and, as a result, pushes itself to come forward.
Hence, when the swimmer starts swimming, it indicates the action-reaction force pair that is present in Option B as the force that is applied by the swimmer on the wall of the swimming pool, and the same force is applied by the wall towards the swimmer.
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Which list of organelles would you associate with an animal cell?
O A cytoplasm, nucleus, cell membrane, large vacuoles
B. cytoplasm, nucleus, endoplasmic reticulum, cell wall
O c. cytoplasm, nucleus, Golgi bodies, cell wall
O D. cytoplasm, nucleus, lysosome, ribosomes
O E. cytoplasm, nucleus, mitochondria, chloroplasts
Florida sits on a certain type of rock. What is the name of this rock and how did it form?
Transposons are movable elements of DNA that insert into new positions within the genome. A transposon may disrupt normal gene function, confer an evolutionary advantage, or have no effect on the organism.
Select all scenarios in which a transposon has positively contributed to the evolution of the host's genome.
a. insertion of a transposon encoding a heat shock protein into the genome of a plant
b. insertion of a transposon into the gene encoding for dystrophin, a protein involved in skeletal movement and cardiac function
c. aquisition of a transposon carrying an adhesin gene into the Lactobacillus casei genome
d. acquisition of a transposon that disrupts
e. an enhancer element of a colorectal cancer tumor‑suppressor gene acquisition of a transposon carrying a tetracycline resistance gene in a bacterium
Answer: Transposons are genomic sequences that can cause or reverse mutations by changing its positions.
Explanation:
a., and c. are the correct options.
The heat shock protein encoded by the transposon will increase the thermotolerance of the transgenic plant. It will also improve it's stress tolerance.
The adhesin genes will enable the bacteria to stick on the walls of the intestinal tract of humans and this will help human body in digestion process.
which statement best describes a property of a proton
Answer:
Proton has a positive charge.
A common method for analyzing microtubule motor activity is to attach them to a glass coverslip (the tails stick very well to glass) and then incubate with microtubules, which will settle on them and then "glide" across the surface of the coverslip as the heads of the motors propel them. This is easily observable in the light microscope. In an assay such as this, how can one determine the directionality of the movement of the microtubules (plus- or minus-ended)? Assume that you do not know if the motor is a plus- or minus-end motor prior to the experiment.
Answer:
Explanation:
Microtubules are integral part of the cytoskeleton of eukaryotic cells, responsible for maintaining the shape of the cell. They are involved in intracellular trafficking by forming veritable "rails" along which motor proteins move and transport various organelles.
In analyzing microtubular motor activity, the plus (+) end and the minus(-) end proteins can be marked with non-identical fluorescent proteins, followed by observing it under the fluorescent microscope. From observation, the presence of motility of the fluorescent dye helps to determine if the motor is plus or minus end.
True or false ? I’ll mark brainliest correct answer
Answer:
False
Explanation:
Abiotic factors are non-living
Biotic factors are living
Answer: false
Explanation: biotic factors are living things, these things listed are non-living things
Will mark brainliest!!!!!!!
The three domains are___.
The parasite which causes malaria is categorized as:
Ciliophora
Zoomastigina
Sporozoa
Sarcodina
.
answer plasmodium parasite
Help me guys!!!!!!! Please I will give brainliest!! :((
Answer:
it is D mitochondria if you don't mind plz branilst
Explanation: srry put wrong letter
all living things have cell membranes and since it does not specify you choose cell membrane. mitochondria is the power house of the cell, it creates energy.
Answer:
D
Explanation:
all living things have cell membranes and since it does not specify you choose cell membrane. mitochondria is the power house of the cell, it creates energy.
Which states of matter have no definite shape or volume
why does the bread easily get molds than the rice
Answer:
The sugar content
Explanation:
Bacteria are attracted to sugar, so maybe, they try to get the sugars and mold the bread.
Bread can easily get molds than the rice because of the following:
Mold are micro organisms that grow on the surface of left over food or food that are not properly preserved.
Although preservatives prevent bread from molding quickly but Bread will tend to always mold, unless it is kept in the fridge.
Bread that are kept in a place that is cool will often last for days compare to bread that are kept in a place with heat as heat will make the mold to quickly grow on the bread .
White rice that is dry can last upto 3 years or even more than if they are store in a room temperature.
Rice can only mold in a situation where the rice is moist.
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Read the excerpt from Team Moon. The heavier the spacecraft, the harder it is to launch. And fuel is heavy. So it was critical to pinpoint the fuel needed, add a cushion, then take no more than necessary. But now, because the landing was taking far longer than planned, the fuel was almost gone. Mission Control wanted Neil to take as much time as he needed and fly the LM as near empty as possible only because they wanted him to make the landing. But if he ran out of fuel above the surface, in all likelihood the LM would crash onto the moon. So they were trying to time it to the last possible second before calling an abort—calling off the landing. Why does the author use a problem-solution text structure in the paragraph?
Answer:
c have a nice day
Explanation:
Which best describes traditional classification?
O It is based on shared characteristics.
O It is based on evolutionary relationships.
O It is called phylogenetic classification.
O It is called cladistics.
Answer: It is based on shared characteristics.
Explanation:
I did the test. Bro
Answer:
C ; It is based on shared characteristics.
Where would a new star most likely form?
Answer:
Stars are born within the clouds of dust and scattered throughout most galaxies. A familiar example of such as a dust cloud is the Orion Nebula. Turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction.
Most galaxies have stars distributed throughout them that are born within dust clouds.
What are stars?Any large, gaseous celestial body that is self-luminous and emits light as a result of its own internal energy sources is a star.
Stars are created when a very huge cloud of gas and dust in space slowly contracts under the force of gravity.
The presence of gas and dust clouds is relatively widespread, and our knowledge of the Milky Way Galaxy's star-forming regions is extensive.
Stars are born within dust clouds and are dispersed throughout the majority of galaxies. Most galaxies have stars distributed throughout them that are born within dust clouds.
The Orion Nebula is a well-known illustration of a dust cloud of this type.
Deep within these clouds, turbulence creates knots with enough mass for the gas and dust to start collapsing under its own gravitational pull.
Thus, this way, the stars are formed.
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Chemical break down of food
photosynthesis
oxidation
nitrogen fixation
nutrition
Answer:
photosynthesis
Explanation:
If you are referring to the chemical breakdown of food in PLANTS, not humans, then your answer is photosynthesis.
Hope this helps :)
Which of these actions is a sustainable agricultural practice?
A. Growing crops that need less water
B. Importing water from another region
C. Irrigating fields with groundwater
D. Feeding a large population with factory farming
Growing crops that need less water is an action that is a sustainable agricultural practice. Thus, the correct option is A.
What is Sustainable agriculture practice?Sustainable agriculture practice may be defined as those actions which are environmentally favorable, profitable, and significant for communities. It includes the needs of society without compromising the ability for current or future generations.
Importing water from another region provokes maintenance and labor cost. Feeding a large population with factory farming affects the productivity of the crops. Irrigating fields with groundwater utilize more and more water consumption.
Therefore, the correct option for this question is A.
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How does the structure of proteins related to their function?
Answer:
Protein function is directly related to the structure of that protein. A protein's specific shape determines its function. If the three-dimensional structure of the protein is altered because of a change in the structure of the amino acids, the protein becomes denatured and does not perform its function as expected.I hope this helpsThe structure of proteins depends upon the sequence of amino acids joined together. The sequence of amino acids changes the function of proteins.
What are proteins?Large, intricate molecules known as proteins play a variety of vital functions in the body. They are crucial for the structure, operation, and control of the body's tissues and organs and carry out the majority of their job inside cells.
The relationship between a protein's structure and function is direct. The function of a protein is determined by its unique form.
The protein becomes denatured and ceases to function as intended if the three-dimensional structure of the protein is altered as a result of a change in the structure of the amino acids.
Therefore, the order in which amino acids are linked together determines how proteins are structured. The order of amino acids alters how proteins work.
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Fahd is trying to write a focused scientific question. He writes, “Does the material something is made of affect its density?” How could Fahd’s question best be rewritten?
Answer: So basically we have to know does the material's characteristics/compositions affect its density?
Explanation: Density is defined as the ratio of the mass of a material to its volume at a specific temperature and pressure. The Density of material is changed by changing its mass to volume ratio or by changing its temperature or by changing its pressure, the density of material changes. The Density of material is changed by changing its mass to volume ratio or by changing its temperature or by changing its pressure, the density of material changes. From the above description, it can be inferred that a material's composition or chemical characteristics may remain unchanged if density changes by changing the pressure or temperature of the material.
What is the definition of light-dependent reactions and light independent reactions?