Answer:
Grey matter contains numerous cell bodies and relatively few myelinated axons while white matter contains relatively few cell bodies and is composed of chiefly long-range myelinated axons.
Explanation:
7. In what other places, besides central Africa, can people with a high eumelanin content be found
living today?
Answer:
Although people living in low latitudes have high levels of eumelanin, this pigment can be found in people around the world (because it is predominant in people with brunette hair)
Explanation:
In animals and humans, melanin pigments play key roles in eye, hair, and skin coloration. Basically, there are three main types of melanin pigments: eumelanin (brown-black and insoluble), pheomelanin (yellow-red and soluble in alkali solution) and neuromelanin (found in some parts of the brain). Eumelanin is predominant in black people and brunette hair people, this being consequently found around the world. There are two distinct classes of eumelanin: black eumelanin and brown eumelanin, which differ in their patterns of polymeric bonds, and they have an incidence on the type of coloration (e.g., black eumelanin is found in people with grey hair).
In the carbon cycle, how is carbon stored in organisms and then exchanged with the environment?
Answer:
Photosynthesis, Decomposition, Respiration and Combustion.
Explanation:
The carbon cycle is nature's way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again. Most carbon is stored in rocks and sediments, while the rest is stored in the ocean, atmosphere, and living organisms. In the natural carbon cycle, there are two main processes which occur: photosynthesis and metabolism. During photosynthesis, plants use carbon dioxide and produce oxygen. During metabolism oxygen is used and carbon dioxide is a product.
The genetic information contained in DNA consists of a linear sequence of coding units, known as codons. Each codon consists of three adjacent DNA nucleotides that correspond to a single amino acid in a protein. The E. coli DNA molecule contains 4.7 x 10^6 base pairs. Determine the number of codons that can be present in this DNA molecule.
Answer:
The correct answer is - 1.57 × 10⁶ codons.
Explanation:
Given:
No. of base pairs in E.coli DNA = 4.70 × 10⁶
we know :
1 codon = 3 DNA nucleotides
Solution:
No. of of base pairs in DNA = No. of nucleotides in a single strand
= 4.70 × 10⁶
It must have 1/3 this number of triplet codons
= 4.70 × 10⁶ / 3
= 1.57 × 10⁶ codons.
Thus, the correct answer is - 1.57 × 10⁶ codons.
Which statement differentiates between prokaryotic cells and eukaryotic cells?
Answer: The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. The nucleus is where eukaryotes store their genetic information.
Explanation:
Answer:
definettly 12345678900000101010101010110001110101
inhumane farming methods are detrimental to both crops and animals .Critically discuss how animals get affected
Answer:
In an ecosystem when plants don't exist or dies out all animals while die because herbivorous depends on plants when plants die they also die making the carnivores also die due to lack of food
There are lots of harsh and cruel farming methods that are very harmful to crops and animals, If not well controlled these farming method could pose a very serious threat to crops and animals thereby leading to shortage in food supply.
These methods include;
- Uncontrolled dumping of waste; waste products from farm animals should be dumped properly to avoid contamination and spread of diseases.
- small farm space; a lot of farmers today do not have enough land/fields where animals can roam free, these animals are secluded to a tiny space causing cross contamination between these animals
- giving growth hormones to farm animals is also a very bad practice, these animals should be allowed to grow at their own pace.
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Which key feature of living organisms is best described as the transmission of DNA from parent to offspring?
Answer:
But what were the key scientific discoveries that helped establish these principles? As it turns out, the connections between genes, chromosomes, DNA, and heredity were ... each parent contributed a form of element to the resulting offspring. ... The most remarkable feature of both Mendel's and Darwin's proposals is that ...
Explanation:
Inheritance is the key feature of the living organisms which can be best described as the transmission of DNA from parent to offspring. Thus, the correct option is C.
What is Inheritance?Inheritance is the process through which the genetic information is passed on from the parent generation to the child. This is why, the members of the same family tend to have similar kind of characteristics.
Genetic information is the DNA or chromosomes which is transferred from the parents to offspring through fertilization of gametes. Gametes are the haploid cells which contain genetic information from both the parents which combine to form an offspring with characteristics similar to both the parents.
Therefore, the correct option is C.
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what are good sources of unsaturated fats?
Answer:
Saturated Fats, Here are 10 high-fat super foods that are actually incredibly healthy and nutritious.
Explanation:
1. Avocados:
Avocados are a fruit, with fat at 77% of calories. They are an excellent source of potassium and fiber, and have been shown to have major benefits for cardiovascular
2. Cheese:
Cheese is incredibly nutritious, and a single slice contains a similar amount of nutrients as a glass of milk. It is a great source of vitamins, minerals, quality proteins and healthy fats.
3. Dark Chocolate:
Dark chocolate is high in fat, but loaded with nutrients and antioxidants. It is very effective at improving cardiovascular health.
4. Whole Eggs:
Whole eggs are among the most nutrient dense foods on the planet. Despite being high in fat and cholesterol, they are incredibly nutritious and healthy.
5. Fatty Fish:
Fatty fish like salmon is loaded with important nutrients, especially omega-3 fatty acids. Eating fatty fish is linked to improved health, and reduced risk of all sorts of diseases.
6. Nuts:
Nuts are loaded with healthy fats, protein, vitamin E and magnesium, and are among the best sources of plant-based protein. Studies show that nuts have many health benefits.
7. Chia Seeds:
Chia seeds are very high in healthy fats, especially an omega-3 fatty acid called ALA. They are also loaded with fiber and minerals, and have numerous health benefits.
8. Extra Virgin Olive Oil:
Extra virgin olive oil has many powerful health benefits, and is incredibly effective at improving cardiovascular health.
9. Coconuts and Coconut Oil:
Coconuts are very high in medium-chain fatty acids, which are metabolized differently than other fats. They can reduce appetite, increase fat burning and provide
10. Full-Fat Yogurt:
Real, full-fat yogurt is incredibly healthy.
It has all the same important nutrients as other high-fat dairy products.
But it’s also loaded with healthy, probiotic bacteria, that can have powerful effects on your health.
Studies show that yogurt can lead to major improvements in digestive health, and may even help fight heart disease and obesity.
Unfortunately, many of the yogurts found on store shelves are low in fat, but loaded with added sugar instead.
It is best to avoid those like the plague.
Describe the use of the symbols + and - when characterizing a trophies cascade
Answer:
Trophic cascade, an ecological phenomenon triggered by the addition or removal of top predators and involving reciprocal changes in the relative populations of predator and prey through a food chain, which often results in dramatic changes in ecosystem structure and nutrient cycling
The use of the symbols + and - in a trophic cascade is specific to the removal or addition of top predators to the respective trophic levels.
What do you mean by Trophic cascade?A trophic cascade may be defined as powerful indirect interactions that can control entire ecosystems irrespective of organisms or species.
The symbol + denotes the positive effect of predators on the trophic level of their prey, while the symbol - denotes the negative effect of predators on the trophic level of their prey.
Therefore, the use of the symbols + and - in a trophic cascade is specific to the removal or addition of top predators to the respective trophic levels.
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One adaption to life in flowing water is what?
Answer:
Explanation:
There are many options, here are a few choices:
Fast moving water tends to be colder than slow water; some of it originates as snow melt on the sides of mountains, for example. For this, animals in fast water tend to be more cold resistant. This is why you do not see fish like freshwater trout in equatorial regions. These animals struggle and die in slow, warm water.
Fast moving water means that if the animal or plant wants to stay put, it must resist the flow. Fish tend to be far more muscular and lean in these places, while insects like stoneflies, mayflies, and other larvae have ways to secure themselves to rocks and plants while growing. Plants develop strong root systems, and algae hold fast in rocky crevices in the river. Some animals also have suction in order to stay in place where there is fast flowing water.
Some animals have to adapt their reproductive systems as well. Because finding a mate is difficult in the sweeping waters, breeding tends to happen all at one time. As an example, salmon have runs, where thousands of fish all swim upriver at once to breed, can dramatically alter the surrounding ecology of the river. Insects like mayflies have hatches, where hundreds of thousands of flies swarm into the air at once to breed and lay eggs.
Explain one way a mutation can be beneficial to a bacterial cell.
Answer: They lead to new versions of proteins that help organisms adapt to changes in their environment. Beneficial mutations are essential for evolution to occur. They increase an organism's changes of surviving or reproducing, so they are likely to become more common over time
Explanation:
Bacteria can be beneficial to evolution.
"Beneficial mutations are essential for evolution to occur. They increase an organism's changes of surviving or reproducing, so they are likely to become more common over time."
From google! I hope this helps and DM me with any other questions!
Fibers used in textiles can be either natural or synthetic. Cotton and Linen are different variants of cellulose fibers. Wool is natural polyamide (protein) fiber. Nylon and polyester are variants used in synthetic fibers. There are 35 kinds of amino acids used in making proteins, and most proteins have 50-1000 amino acids in the chain. What does this say about the number of different kinds of proteins available in nature
Answer:
Proteins are very varied, and the number of junctions and the arrangement in which these junctions are found depends on this.
In addition to taking into account the amount of amino acids.
Explanation:
Proteins in nature are found in great variety, this is due not only to the amount of amino acids present, but the multiple combination options between these amino acids, we must not ignore the unions, that is why some proteins are more complex what others.
Proteins have different unions and this makes it have different coformations, there are primary, secondary, tertiary and quaternary unions, if the protein has all these unions it is considered complex, whereas if it has the simplest it is considered a simple protein.
In a plant in which fuzzy leaves (f) are dominant over smooth leaves (), which of the following crosses will produce only offspring with smooth leaves.
a. ff x ff
b. ft x ff
c. ft * ft
d. FF * FF
Answer:
a
Explanation:
ff x ff is the cross that will produce only offspring with smooth leaves.
What is cross?Cross means breeding of parents to produce offspring.
What is produce?Produce means to generate.
What is offspring?Offspring is the product of a cross.
f is the recessive allele of smooth leaves whereas F is the dominant allele of fuzzy leaves.
So the cross ff will give all smooth leaves where as FF will give all fuzzy leaves.
Hence the correct option is (a).
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The structure of each kind of body cell is suited to its_____
Answer:
Unique function
Explanation:
The structure of each kind of body cell is suited to its unique function.
What is cell ?The fundamental structural and operational unit of all living things is the cell. Each cell has a cytoplasm that is surrounded by a membrane and is home to a variety of macromolecules, including proteins, DNA, and RNA, as well as numerous tiny molecules that are nutrients and metabolites.
Cells can develop specialized functions and perform a variety of tasks within the cell, including protein synthesis, DNA repair, replication, and motility. Within the cell, cells can specialize and move around. Due to their small size, the majority of cells are measured in micrometers.
Only under a light microscope can the majority of plant and animal cells, which range in size from 1 to 100 micrometers.
Therefore, The structure of each kind of body cell is suited to its unique function.
Therefore, The structure of each kind of body cell is suited to its unique function.
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Unit 3a Earth and the Solar system
Answer:
D
Explanation:
Approximately 4.6 billion years ago, the solar system was a cloud of dust and gas known as a solar nebula. Gravity collapsed the material in on itself as it began to spin, forming the sun in the center of the nebula.
What kind of energy can be transferred? I energy
Answer:
Answer. Energy can be transferred from one form to another like kinetic energy to potential energy, light energy to heat energy, kinetic energy to electrical energy, light energy to chemical energy .
Explanation:
How many oxygen molecules can one hemoglobin molecule transport?
Answer:
four oxygen molecules
Explanation:
The hemoglobin molecule has four binding sites for oxygen molecules: the iron atoms in the four heme groups. Thus, each Hb tetramer can bind four oxygen molecules.
Johanna is studying what happens to the energy as a ball rolls down a ramp. What is one form of energy that she
is studying?
gravitational potential energy
electrical energy
chemical energy
elastic potential energy
PLEASE REPLY SOON AS POSSIBLE !!
Answer:
gravitational potential energy
Explanation:
Gravitational potential energy is that energy that an object possesses due to its height or vertical position. The vertical position of the object causes it to be attracted to the Earth's gravitational field, which is the basis in the name. In this case, a ball is said to roll down a ramp, which is an inclined surface.
Johanna can be said to be studying the GRAVITATIONAL POTENTIAL ENERGY because of the falling or vertical position of the ball from the ramp in response to the Earth's gravity.
Answer:
A . gravitational potential energy
Explanation:
It's right on edg 2020
Good luck (:
An individual with Huntington disease has two normal parents. What are plausible explanations for this pattern of inheritance? Check all that apply. Check All That Apply A spontaneous mutation occurred in the mother's germline to produce a mutant HD allele. A spontaneous mutation occurred in the mother's germline to produce a mutant HD allele. A spontaneous mutation occurred in the father's germline to produce a mutant HD allele. A spontaneous mutation occurred in the father's germline to produce a mutant HD allele. A spontaneous mutation occurred in the individual's germline to produce a mutant HD allele. A spontaneous mutation occurred in the individual's germline to produce a mutant HD allele. Huntington disease shows incomplete penetrance.
Answer and Explanation:
The Huntington disease is caused by a mutation in the gene that codifies for the Huntingtin protein (Htt). The mutation produces an altered form of the protein leading to the neuron´s death in certain areas of the brain.
The Huntington disease characterizes for being,
Hereditary, passing from generation to generation. To express the disease, a person must have been born with an altered gene. Autosomal, affecting men and women equally, because the mutated gene is located on an autosomal chromosome.Dominant, which means that by getting only one copy of the altered gene coming from any of the parents, the receiving person will express the disease. The mutation in the gene dominates over the normal gene copy. Expressed by heterozygosis. Most people affected by the disease are heterozygous, with a normal copy and a mutated copy.There are just a few cases all around the world (3% approximately) in which the disease is expressed with no family history. The progenitors are not affected by the mutation. These cases are very rare and are called "de-novo" mutations. A new mutation is spontaneously produced and it is not inherited from any of the parentals. It consists of an increase in the number of CAG repetitions. In a normal person, the number of CAG repetitions is less than 35. When there are 40 or more repetitions it occurs the disease. But when there are between 35 and 39 repetitions, the penetrance of the disease is incomplete. This is a "gray zone". Those alleles that fall in the gray zone are unstable and might produce the HD. Individuals with these unstable alleles have a tendency to increase the number of repetitions from generation to generation until the number reaches 40 repetitions and the person expresses the disease. This usually occurs in the paternal germinal line, as it is particularly unstable in sperm and probably meiosis greatly affects their instability, causing an increase in the number of CAG repeats.
what does it mean to think like a scientist
Answer:
Thinking like a scientist is based on asking and answering questions. ... They may design and perform an experiment to try to answer their question and test their hypothesis. From the results of their experiment, scientists draw conclusions. A conclusion describes what the evidence tells the scientist.
Explanation:
100 POINTS IF YOU ANSWER ASAP!!!!!! [About 2 or more sentences for each box]
Answer:
I don't understand the question that well but from what I understand I have to say how they relate or effect each other.
Mass. Mass can be effected by your weight and height. Your weight can help increase mass but size matters to. Think of gold. Gold is very dense so it's mass is greater. when you pick up an equal size of gold and another object gold will feel heavier because of its size and weight.
Weight. think of gold as well. Because of its mass it feels heavier. Weight can also mean it is larger. Think of a pebble and a boulder. They are both stone so we can compare them. A boulder is larger and it is heavier.
volume. volume is basically size. if something's mass is high it will be large if it is not dense. just was before size can be directly related to weight if they are the same substance.
Explanation:
hope this helps.
Floor gang aooh. sub to pewdiepie.
Answer:
I dont get nothing
Explanation:
When you ask the question be clear
A- 0.455 g B- 5.50 g C. 4.56 g D. 0.55 g
Answer:
Maybe it is 5.50 because not much information is given to calculate it or to find it.
Mountains are part of which earth sphere?
geosphere
hydrosphere
atmosphere
cryosphere
Answer:
the geosphere (: hope this helps
Answer:
A) the geosphere ^-^
Anna is a wildlife photographer. She wants to photograph woodpeckers, snowy owls, and hawks. In which biomecan Anna find these birds?
ОА
desert
B.
tundra
OC temperate deciduous forest
D.
rainforest
Answer:
c
Explanation:
all of the animas can live in tdf
If Anna wants to photograph woodpeckers, snowy owls, and hawks, she needs to visit the temperate deciduous forest. Thus, the correct option is C.
What is the temperate deciduous forest?The temperate deciduous forest may be defined as a biome that is primarily composed of soil rich in organic and inorganic nutrients and is quite fertile.
The precipitation ranges from 75-200cm/year. It is the region where woodpeckers, snowy owls, and hawks are easily found.
Therefore, the correct option is C.
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What parts make up the backbone of DNA
Explanation:
DNA is made up of the sugar-phosphate backbone.
It consists of 5-carbon deoxyribose sugars and phosphate groups. These sugars are linked together by a phosphodiester bond, between carbon 4 of their chain, and a CH2 group that is attached to a phosphate ion.
Fungi tend to reproduce sexually when nutrients are limited or other conditions are unfavorable,but they reproduce asexually in more ideal conditions. Why is this strategy successful?The fungal colonies reproduce by the process of asexual reproduction during the availability ofnutrients. When favorable conditions are present the fungi are succeed, therefore fungi do notchange its growth features. When conditions are unfavorable the fungi undergo sexualreproduction process. Sexual reproduction produces offspring which are distinct from the parent.This strategy is successful because this reproduction increases genetic variation, which entailsthe odds of some progeny, which are suited to new and challenging conditions. When nutrientsare available in plenty the mother cell do not depend on the other cells, rather multiply by mitosisgiving rise to daughter cells but during unfordable conditions
Answer:
Sexual reproduction produces offspring which are distinct from the parent.This strategy is successful because this reproduction increases genetic variation, which entailsthe odds of some progeny, which are suited to new and challenging conditions.
Explanation:
Sexual reproduction produces genetic variability, as two nucleic unites to produce a new offspring this allows the fungus to adapt to new environments. Sexual reproduction in the fungi consists of three sequential stages plasmogamy, karyogamy, and meiosis.
It involves diploid chromosomes pulled into two daughter cells, each containing an haploid set of chromosome.
Plasmogamy is the fusion of two protoplasts which brings together two compatible haploid nuclei this nuclear types are present in the same cell, but are not yet fused. Karyogamy then leads to the fusion of the haploid nuclei and the formation of a diploid nucleus. The new cell formed by karyogamy is the zygote.
Which of the following types of models is most likely to be used to predict earthquakes?
Answer:
computer model
Explanation:
what are 2 types of scientific investigation?!?!?!?!??!?PLZ I WILL GIVE BRAINLIEST ANSWER AND POINTS
Answer:
Controlled Investigation
Field Investigation
Explanation: In a controlled experiment, the scientist has total control over the environmental conditions. The temperature, humidity, amount of light, amount of noise, materials, etc. can all be controlled and monitored by the scientist throughout the investigation.
A field investigation involves observing and measuring plants and animals (including people) in their natural habitat or environment without changing, harming, or altering the setting or any part of the test subjects. Like in a controlled experiment, the scientist chooses to observe and measure how one change (IV) has a measurable effect (DV) on something else.
How many organs are in the human body?
Mass 112.5g/ Volume ? = Density 75 g/cm3 *
Answer:
The volume is 8,437.5 cubic centimeters.
arrange the phases of mitosis
Answer:
Alright, sure thing.
Explanation:
These phases are prophase, prometaphase, metaphase, anaphase, and telophase.
Answer:
it includes; Interphase,Prophase,Metaphase, Anaphase,Telophase
