A membrane is referred to as a thin tissue layer that separates, protects, or connects structures and is denoted as option B.
What is a Membrane?This is referred to as a biological layer which comprises of lipids and other types of compounds which are found in cells and it is usually a thin layer which separates the internal environment from the external areas.
This ensures that the cell is protected as it prevents pathogens and other harmful substances from entering. It also helps to connect different structures together which is therefore the reason why option B was chosen.
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DNA is a molecuele found ia all cells which problem does this model of DNA solve
All of that DNA is tightly packaged into chromosomes in a complex series of coils and loops.
Deoxyribonucleic acid is a polymer composed of polynucleotide chains that coil round every different to shape a double helix carrying genetic commands for the development, functioning, boom and reproduction of all regarded organisms and lots of viruses. DNA and ribonucleic acid are nucleic acids.
DNA, or deoxyribonucleic acid, is the hereditary material in human beings and almost all different organisms. nearly every cellular in a person's body has the equal DNA.
In all residing things, DNA is vital for inheritance, coding for proteins, and offering instructions for life and its techniques. DNA dictates how a human or animal develops and reproduces, and eventually dies.
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The table below shows two conclusions about atoms based on experiments by Thompson and Bohr.
Name of scientist Experimental Process Conclusion about atoms
Thompson Scatter radioactive particles It is a spherical object containing electrons in a massive positive charge distribution
Bohr Check the spinning motion of electrons Electrons are found outside the nucleus of the atom at various levels called shells, arranged like layers of an onion
Which of these statements best explains why Thompson and Bohr visualized the atom differently?
Atoms change their structure and particles from time to time.
Atoms cannot be described easily with the help of only one model.
Scientists do not agree with each other to strengthen science.
Scientists with varied experimental processes and interests perceive things differently.
Researchers accept proposing speculations that negate current hypotheses. So, the proper alternative is D i.e., Scientists with varied experimental processes and interests perceive things differently.
As of late, the structure of molecules has been found. Sometime recently the perfect demonstration of a molecule was found, and a few others were proposed and abandoned.
In J.J. Thomson's theory, Thomson compared the definition of an iota to that of a Christmas pudding. He claimed that atoms are made up of an emphatically charged circle with inserted electrons.
Additionally, he claimed that since the sizes of positive and negative charges break even, an iota as an entirety is electrically impartial.
Rutherford tested with α-particle diffusing on a gold sheet. He took note that the lion's share of the negative particles did not divert when they voyage through the gold foil.
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A cross-country skier travels 5Km due North, makes a right-angled turn, and travels a further 12Km due East. (a) If the distance is covered in 51 min, what is the skier average speed in Km/h? (b) What is the magnitude of the skier's average velocity in Km/h?
The skier's average speed in Km/h is 20 ms⁻¹.
The average speed of the object is multiplied by the time traveled to discover the displacement. The equation x = ½( v + u)t may be manipulated, as proven below, to locate any one of the 4 values if the other 3 are regarded. Speed is the directional speed of an object in motion as an indication of its rate of change in function as observed from a selected body of reference and as measured by means of a particular standard of time.
calculation:-
Average speed = total distance / total time taken
= 5 + 12 / 51 min
= (17 / 51)× 60 hr
= 20 ms⁻¹
total displacement = [tex]\sqrt {5^{2} +12^{2}[/tex]
= 13 m North - East
Magnitude of average velocity = (13/51) x 60
= 15.29 ms⁻¹
The velocity is the time fee at which an item is moving along a direction, even as the pace is the rate and route of an item's motion. speed is the speed at which something moves in a particular route. An example as the speed of an automobile touring north on a toll road, or the velocity a rocket travels after launching. In a scalar way, the absolute price magnitude of the velocity vector is continually the rate of the motion.
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1. What about having a baby makes you the most excited? What makes you the most nervous?
Many ladies delight in this stage of their lives.) It's common to feel a variety of emotions when pregnant. Being pregnant is undoubtedly not always easy, but it doesn't imply that it has to be a bad time either.
What makes people desire to have kids?Some people feel compelled to have children on an instinctual level. Some people desire children because they believe they should. Some people desire children because they believe "something" is lacking from their life. Some people desire children in order to better understand themselves.
You could experience anxiety more often on some days or even weeks. When it happens, you start to feel better once more. For instance, you might be concerned if your infant gradually loses weight for a week. You fear that you won't ever sleep soundly again.
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Is it possible for same-gender identical twins' children to be identical to the other twin's children?
Yes, Is it possible for same-gender identical twins' children to be identical to the other twin's children but it is very rare.
What is the issue of identical twins about?Both newborns have exactly the same number of chromosomes, which are genetic building blocks. This is so because the identical sperm and egg were used to create both kids. Because of this, both kids are born with the same sex and have the same genetic traits, like eye and hair color.
Therefore, Except in a few exceptionally hard to see in some cases, note that identical twins are always of the same sex. Twins who are said to be fraternal can be of either sexes.
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Scientists investigated populations over fruit fly species that live on the Chinese mainland andon several small islands off the coast of China. The scientists identified that the geneticvariation within each islands fruit fly populations was high even though the islands were smalland surrounded by water. Which statement best explains the role of gene flow in thecharacteristics of the islands fruit flies?A. Different types of inherited mutations occurred in the fruit flies on each island.B. fruit flies from each island and from the Chinese mainland interacted and made it witheach other.C. a new species of fruit fly arrived on each island and caused changes that allowed theresident species to survive.D. fruit flies traveled to the Chinese mainland and the increased competition for resourceson each island resulted in the evolution of new species.
The correct option is A. Different types of inherited mutations occurred in the fruit flies on each island. Assuming these fruit flies did not have any interaction with flies from other islands, then their mutations were not shared among islands, making each fruit fly island population unique.
100 points (its not A
Which of the following is a possible consequence of chemical pollutants in a lake or river?
Increase of oxygen in the water
Decrease in algae colonies
Quick drop in dissolved oxygen
Increase in nitrates and phosphates
Answer:Decrease in algae colonies
Explanation:Because with more toxic chemicals its poisoning algae certain fish and things of that nature
Construct an Explanation A period of unusually hot, dry weather comes to a town that is
dependent on a small reservoir for its fresh drinking water. As the dry weather continues, the
town continues to use only as much water as it used in the past, but the reservoir dries up.
Construct an explanation describing why the reservoir dried up. (Hint: Recall what you know
about the water cycle.)
Answer:
Drought. A drought is an extended period of unusually dry weather with no rain or other precipitation.
Explanation:
Which statements accurately describe elements? Check all that apply.
Statements describing elements are :
1.) They integrate chemically to form new materials; they're "constructing blocks of matter".
2.) They can be damaged down with the aid of physical method.
3.) They can not be damaged down through chemical way.
4.) They're chemical combinations of less difficult varieties matter.
5.) They may be pure materials.
Chemical Element is a species of atoms which have a given quantity of protons of their nuclei, together with the natural substance consisting handiest of that species. in contrast to chemical substances, chemical elements can not be broken down into simpler substances by any chemical reaction.
An element is a essential object that can't be broken into smaller portions.There are about 100 elements, each with its personal form of atom.
In chemistry and physics, an element is a substance that cannot be damaged down by non-nuclear reactions. In computing and arithmetic, an element is a awesome piece of a larger machine or set.
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app schoology.com/assignment/6384561941/assessment
Column A
1.
2
3.
-
vi
Artificial Levees
Natural Levees
Floodplain
Young River
Mature River
Old River
Dam
Delta
Column B
a. U shaped channel with more sloping sides and lots of
meanders and oxbow lakes.
b. part of the valley floor covered with water during a flood.
c. raised river banks caused by flooding
d. U shaped channel with more sloping sides and some
meanders
e anembankment built to prevent the overflow of a river.
f. V shaped channel with steep sides
& depositional features of built up sediment that forms
where a stream enters a lake or ocean
h a barrier to obstruct the flow of water
Answer:
Explanation:
head of the humerus
head of the humerus
head of the humerus
head of the humerus
head of the humerus
head of the humerus
Fossil fuels are nonrenewable energy resources that are rich in carbon. Examplesof fossil fuels include oil, natural gas, and coal.How are oil and natural gas resources extracted?
Answer
oil and natural gas are extracted via a process called hydraulic fracking.
Conventional natural gas and oil deposits are found in permeable rocks, trapped below impermeable rock. These deposits can be extracted by drilling down through the impermeable rock into the permeable rock.
But gas and oil are also trapped in the spaces within impermeable shale rock. Therefore, because shale is impermeable, simply drilling down to it is not enough to extract these deposits. Instead the process of hydraulic fracturing, known commonly as fracking, is used. The rock has to be fractured to get the gas or oil out
which is one major difference between anaerobic and aerobic respiration?
Answer:
the anaerobic is a different form
One major difference between anaerobic and aerobic respiration is the electron acceptor. The correct option is b.
What is aerobic respiration?Aerobic respiration occurs in a cell when glucose is broken down with the help of oxygen to produce carbon dioxide, water, and the release of energy. For instance, aerobic respiration occurs in mitochondria.
Anaerobic respiration, on the other hand, is the breakdown of glucose without the use of oxygen in a cell, producing alcohol, carbon dioxide, and the release of energy. Yeasts, for instance, breathe anaerobically.
We can therefore draw the conclusion that the primary distinction between aerobic and anaerobic respiration is that the former requires oxygen while the latter does not.
Therefore, the correct option is b, electron acceptor.
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The question is incomplete. Your most probably complete question is given below:
use of electron transport
electron acceptor
use of proton motive force
electron donor
Which of the following characteristics of water are important for its role in cellular reactions?
1. high heat of evaporation
II. low friction between molecules
III. solvent properties
IV. thermal stability
O I, II, III, and IV
O I, II, and III only
O II, III, and IV only
O I, II, and IV only
Explanation:
dang ..................................
Which of the following groups of animals could be found in temperate grasslands?
Answer asap what’s the correct answer asap for brainlist please
Bison, longhorns, burrowing animals, birds that nest on the ground, and foxes are the animals found in temperate grasslands.
Grasses are known as the predominant flora in temperate grasslands. There are either no trees or very few bushes.Both the North and South of the Tropic of Cancer include temperate grasslands. The Veldts of Africa, the Steppes of Eurasia, the Steppes of North America, and the Pampas of South America are the primary grasslands. Based on the morphological and photosynthetic routes, the grassland has a diverse range of species. Precipitation affects the climate.Bisons, wild buffalo, and antelopes live there.To know more about temperate grasslands visit : https://brainly.com/question/17864454
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What type of molecule is represented by the model below?
The molecule represented below is that of a cholesterol. Therefore, option (C) is correct answer.
What is cholesterol?Cholesterol is waxy. It's not always "bad." Cells, vitamins, and hormones require it. But too much cholesterol is bad. Cholesterol has two origins. Your liver produces all your cholesterol. Animal meals supply the rest of your cholesterol. Meat, poultry, and dairy contain cholesterol.
Cholesterol can be written as the chemical formula C27H46O. According to this interpretation, it is made up of 27 atoms of carbon, 46 atoms of hydrogen, and one atom of oxygen. The structure of cholesterol has a core sterol nucleus that is surrounded by four hydrocarbon rings. These rings are made up of hydrogen and carbon atoms arranged in a circular pattern.
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The gray wolf at one point almost caused the extinction of a certain species of rabbits in the Northwest. The initial abundance of rabbits allowed the gray wolves to hunt easily and eat many rabbits. Eventually the rabbit population began to decrease, resulting in a change in the wolf population.
1. The predator in this scenario is Gray Wolf while the prey is the Rabbit population.
2. Since, the rabbit population is the food of gray wolves, the depletion of rabbits will also increase the intraspecific competition among gray wolfs. this will further lead to an imbalance in the ecosystem and the gray wolf population will also decrease.
3. Decreasing the population of gray wolves in the area will automatically reduce the killing of rabbits. In this way, a balance will be maintained. Therefore the extinction of no species will occur in that area.
What is the intraspecific competition?
Members of the same species struggle for scarce resources in a population ecology interaction known as intraspecific competition. Both individuals lose fitness as a result, but the fit individual survives and can procreate.
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Which of the following is the best example of an adaptation that helps an organism survive in its environment?A. Green coloring on a lizard living one red and brown rocksB. A thick coat of fur on an animal that lives in the desertC. A long root system in a desert plantD. Thin, delicate leaves on a plant that lives in the tundra
An adaptation that helps an organism survive in its environment would be an adaptation that helps this organism get food/water, hide from predators, not loose too many water or nutrients, etc.
A green lizard living in red and brow rocks would cause a great contrast between the colors, putting the lizard in evidence and making it easier for predators to find it. Therefore, A is incorrect.
The adapted leaves of plant from the tundra will be small and waxy, but not too thin as it will try to keep more water inside it than being lost in transpiration. Therefore, D is also incorrect.
An animal that lives in the desert can't have a thick coat of fur because it will make the animal be super heated, causing loss of water that is so important to keep in a desert. So B is incorrect too.
In deserts that are no water easily available, so a plant can have a long root system in order to get water from deep below the surface of the ground. Therefore, the correct answer is C. A long root system in a desert plant
Which is correctly paired?A-outer ectoderm-skeleton muscleB-inner endoderm-body coveringsC-outer ectoderm-body coverings D-middle mesoderm-digestive organs
The correctly paired words are:
Outer ectoderm - body coverings (C)
Body coverings are formed from the ectoderm, not the endoderm, D is incorrect because digestive organs are formed from endoderm and the skeleton muscles are formed from the mesoderm.
Match the following classification of bacteria with the correct definition, please.(Match the choices with the types of bacteria)
Photoautotrophic bacteria use energy from sunlight, carbon dioxide, and water in order to convert into organic materials. They carry out photosynthesis.
Chemoautotrophic bacteria use inorganic molecules such as methane to produce energy. they break the chemical bonds of substances that do not possess carbon to get their energy.
Heterotrophic bacteria rely on autotrophs for food in order to carry out their functions. They do not have the ability to produce their own food.
Answer - Photoautotrophic bacteria - Option 2
Chemoautotrophic bacteria - Option 1
Heterotrophic bacteria - Option 3
What is the rate of photosynthesis when no light is present?
which sentence is the best example of living things reproducing to make more of their kind?
Answer: C
Explanation:
Answer:
D. A male robin and a female robin care for eggs that combine genes from both robins.
Explanation:
it is
What is the age of the earth?A. 5.6 billion yearsB. 6.5 million yearsC. 4.5 million yearsD. 4.6 billion years
According to the USGS, the age of the earth is "4.54 billion years with an uncertainty of less than 1%". They have arrived at this age based on radiometric dating of different rocks from the Earth and hundreds of samples of meteorites.
ANSWER: D. 4.6 billion years
The brain and the spinal cord make up the.A. Peripheral nervous system.B. Somatic nervous system C. Autonomic nervous system D. Central nervous system
The brain and the spinal cord make up the Central Nervous System. These two organs of the body comprises a complex system that is functioning on everything that we do.
The nerves when put together is making up the Peripheral Nervous system. It is one of the part of the Nervous System consisting of the nerves and ganglia located outside of the brain and the spinal cord. The Somatic Nervous System is a part of the Peripheral Nervous System. It functions for the voluntary control of the movement of the body with the aid of skeletal muscles. The Autonomic Nervous Sysyem is also a part of the Peripheral Nervous System. It is responsible for the involuntary physiologic processess regulations. These includes the heart rate, blood pressure, digestion, and respiration.
Answer - D. Central nervous system
Which of the following areexamples of behavioral adaptations?A. migration, hibernation, instincts, being nocturnalB. body color that helps camouflage, body covering like scales, armour, thick coat of fur, beak, clawsC. making venom, secreting slime, digestive enzymes, andaltering the immune system
Answer
A. migration, hibernation, instincts, being nocturnal
Explanation
Behavioral adaptations are the altering or changing of behavior. Migration, hibernation, instincts, being nocturnal are one example o
Biotic factors found in deciduous forest would include
Answer:
lichen, moss, shrubs, maple tree, frogs and there are many more biotic factors found in deciduous forest
List some natural causes of deforestationAnd list some human causes of deforestation.
When we are talking of deforestation, can happen naturally or artificial causes, however, sometimes are hard to distinguish such as plagues and invasive species, the cause can mark the difference between natural cause or artificial, therefore we must be careful with this.
Natural causes:
1.- Natural catastrophes such as tornados or hurricanes
2.-Natural forest fires
3.- Plagues and tree sickness
Human activities:
1.- Bad management of felling trees
2.-Proliferation of plagues increased by global warming
3.-introduction of harmful invasive species
4.-land-use change causing massive clearing for cattle or human-living
What’s the correct answer answer asap for brainlist
Which statement describes a step in the process scientists used to find the
gene that makes human insulin?
OA. Infer the amino acid sequence of insulin from the mRNA base
sequence.
B. Infer the DNA base sequence from the amino acid sequence of
insulin.
C. Use bacteria that naturally produce insulin to locate the gene.
OD. Use reverse transcriptase to make cDNA probes from the mRNA
for insulin.
SUBMIT
The statement 'infer the DNA base sequence from the amino acid sequence of insulin' describes a step in the process scientists used to find the gene that makes human insulin (Option A).
What is the insulin gene?The insulin gene encodes for insulin which is a key hormone secreted by the pancreas in order to metabolize glucose and thus maintain this hormone (insulin) in normal levels in the blood.
The insulin gene sequence can be inferred by observing the sequence of amino acids which indicates the most likely codons that may be used to encode this peptide hormone in natural conditions (i.e. within the human body)
Therefore, with this data, we can see that the insulin gene is composed of a linear nucleotide sequence which can be inferred by observing the natural order of codons in mRNA and or the order of amino acids in the insulin hormone.
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which one of the following choices is an incorrect means of concluding your essay with purpose?A.never leave your reader with any sense of question B.restate your main points C.show how your points apply to something else D.interpret your points
C.show how your points apply to something else that would not go with a good conclusion in an essay.
What is not appropriate for an essay conclusion?The final paragraph of an essay or any other piece of writing should have a conclusion that restates the entire essay/work.
The conclusion paragraph should repeat your essay, highlight the major supporting points you made throughout the paper, and provide your last thoughts on the main topic.
Avoid the following to make your conclusion stronger:
Unmentioned in the main body but significant evidence or analysisGeneric closing clauses, such as "In conclusion..."Weak claims that undercut your case (for instance, "There are valid points on both sides of this issue.")The reader should have a clear understanding of your work after reading your conclusion.To learn more about essays, refer
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Which of the following statements is NOT true?
The corn that we grow today has not changed since prehistoric times.
Early humans planted seeds from corn plants with large kernels.
It took many generations for corn plants to change.
Humans have selectively bred many different types of crops.
Answer:
The corn that we grow today has not changed since prehistoric times.
Explanation:
