What is a type of fibrous protein that makes up the majority of the cortex of a hair?

Answers

Answer 1
Keratin is a fibrous protein, that makes up a large component of the hair and nails. It is a hardened protein, with some flexibility, that is used by epithelial cells to protect the cells from damage and stress, when the hair or nail is still in the roots. It is found in high amount, in vegetables and fruits that are orange in color (carrots in particular)

Related Questions

Early elements of the cell theory followed soon after the development of hooke's light microscope. what does this relationship suggest about the evolution of the cell theory since hooke?

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After development of Robert Hooke's light microscope, early elements of the cell theory were proposed. The invention of light microscope made it easy to study the structure of microscopic cell. After deciphering the cell structure with the help of a light microscope the cell theory was proposed. The invention of microscope was a big break through in the scientific world as it enabled researchers to study the microscopic structure. Later, the microscopes were modified to study the cellular organelles and prokaryotic microorganisms.
Cell theory provides the foundation for the study related to cells such as molecular biology, cell biology, etc. 

What are 2 organelles that are in a plant cell but not anima;?

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Three things that plant cells have but not animals are:

A cell wall, a large central vacuole, and plastids such as chloroplasts.
Spongy mesophyll
And upper epidermis

Olive oil, canola oil, and cashew nuts are rich in monounsaturated fatty acids. olive oil, canola oil, and cashew nuts are rich in monounsaturated fatty acids.
a. True
b. False

Answers

Your answer would be
a. True.
hi.
The answer is
a. True

Suppose you extracted dna from a cheek cell that contains two copies of the same alu insert (one on each homologous chromosome). after 30 cycles of pcr, how many total copies of this region would be produced (assuming successful amplification)? show your work.

Answers

After n cycles of PCR = 2^n copies of the target sequence

Where n = 30 cycles as given in the problem.

Substituting this to the identified formula, let 

2^30 1,073,741,824 copies of the target sequence. 

 

Therefore, a total of 1,073,741,824 copies would be produced.

What is one result of a chemical change?


A.Energy is created.


B.A new material is formed.


C.Materials change from one state to another.


D.Elements are permanently destroyed.

Answers

B. a new material is created

Breah is a 24-year-old who wants to follow the recommendations of dietary guidelines for americans, 2010. she consumes no more than 1500 mg sodium/day; her cholesterol intake is about 400 mg/day; and her intake of folic acid is 400 mcg/day. according to this information, she should reduce her intake of

Answers

Following the guidelines for Americans 2010, Breah should reduce her cholesterol intake to less than 300 mg per day.

She can do that with medication but that's not the first treatment. The best treatment to start is changing her lifestyle: changing to healthier fats (like olive oil), don't consume trans fats, eat food rich in omega 3 and omega 6 fatty acids, eat soluble fiber and add whey protein or casein( found in the eggs) to her diet.

Breah should reduce her intake of cholesterol. Breah appears to be underestimating the effect that a diet high in cholesterol can have on her health. Breah will notice an improvement in her health by following these guidelines.

What do hypotheses, theories, and laws have in common?

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Hello there!

The hypotheses, theories and the laws have in common in explanation.


"
Each of them are trying to provide the steps to guarantee a valid experimentation. You cannot have a valid experimentation without each of these."


Have a nice day! 

The kingdoms included in the linnaeus system of classification are

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I believe the answer would be animalia and plantae. 

I hope this helps!

Upon assessing the client's jaw, the nurse finds decreased range of motion and notes crepitus. what would the nurse suspect?

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The nurse should suspect of a fractured jaw.

The crepitus is a common sign of bone fracture and it's heard when the fractured surfaces of two broken bones rub together.
Also If there is a severe jaw fracture, the patient might experience limited ability to move the jaw or be unable to move it at all.

When the protons are concentrated on one side of the membrane, they pass through golgi complex and form what?

Answers

They are composed into vesicles. They may also form lysosomes. Vesicles are packages with the main intent of transporting things out of and around the cell. Lysosomes help the cell digest its food. All vesicles are destined to be sent to a specific place inside the cell.

Viruses have two main structures: a(n) _____ and genetic material.

Answers

organelle is the answer youre looking for i hope it helps
The two principal parts of the virus are the below:
1. Protein Coat 2. Nucleic Acid. 
The protein coat totally encompasses the nucleic corrosive and fills in as a defensive covering and helps in connection of the infection to the host cell. Nucleic acids are essential since they make up hereditary data in living things

Blockage of a major artery is caused by a blood clot. these clots may form when ________.

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Blood clots can cause blockage of a major artery. These clots may form when cholesterol plaques builds up in the artery walls. Many health issues can be caused by this such as heart disease and stroke. These can be life threatening if not treated.

An intuitive hunch is most likely to be accurate when:

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The individual with the hunch already has a wide range of knowledge in the particular area. This means that the individual has prior background knowledge to base their hunch on, rather than it being just a proverbial 'shot in the dark'.

A set of flashcards on prokaryotes is being sorted into piles. which definition should not be placed in the pile for high-gc gram-positive bacteria? a. they have a higher proportion of adenine–thymine than guanine–cytosine base pairs. b. they include several medically important bacteria. c. one species that is a human pathogen arose three million years ago in east africa. d. some species reproduce by forming chains of spores at the tips of filaments. e. they develop an elaborately branched system of filaments.

Answers

A.  they have a higher proportion of adenine–thymine than guanine–cytosine base pairs.

The option A represents the complete opposite of "high-gc gram-positive bacteria". High GC content means that this bacteria have more guanine ans more cytosine than the other base pairs- adenine–thymine. This means all the other options are correct.

when does cellular respiration occur? are there any situations where living cells are not respiring?

Answers

Cellular respiration consists of different process as glycolysis. Krebs cycle and electron transport so that an energy in the form of ATP extracting in the process of cellular respiration in the food you eat. All organism undertake the first step which is glycolysis. 
Cellular respiration goes on all the time, it involves an intake oxygen and glucose in order to create energy. Respiration is important because without it you would'nt  be alive because you need oxygen for you to live.

Yes. it has a situation where living cells are not respiring, for example, the microbial cells that live in anaeboric environments in certain environments will use fermentation rather than respiration to produce ATP. An example is yeast cell in beer mash.

Okay so I think this is a trick question?

Risk is __________.

A. the probability that something unwanted will happen
B. the probability that something will happen

Answers

I think its a because risk actually means exposure to danger our sacrifice your self plz mark as brainly

Which is not an infection caused by a fungus?
a. athlete's foot
b. thrush
c. trachoma
d. vaginal yeast infection?

Answers

The answer is C. Trachoma
Please mark as brainliest!

Which of the following compounds may be polymers
A. Carbohydrates
B. Nucleic acids
C. Proteins
D. All of these

Answers

I think A or D. And god bless you and have a good day

The option (D) is correct. All of these are polymers.

What do you mean by polymers?

A polymer is a substance or material consisting of very large molecules called macromolecules, composed of many repeating subunits. Due to their broad spectrum of properties, both synthetic and natural polymers play essential and ubiquitous roles in everyday life.

Moreover, polymer is a large molecule or a macromolecule which essentially is a combination of many subunits. The term polymer in Greek means 'many parts'. Polymers can be found all around us. From the strand of our DNA, which is a naturally occurring biopolymer, to polypropylene which is used throughout the world as plastic.

Therefore, examples of synthetic polymers include nylon, polyethylene, polyester, Teflon, and epoxy. Natural polymers occur in nature and can be extracted. They are often water-based. Examples of naturally occurring polymers are silk, wool, DNA, cellulose and proteins.

Learn more about polymers:

https://brainly.com/question/13331373

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Trondheim, norway is located at approximately 63° n. despite its high latitude, it has a relatively moderate annual temperature pattern. what likely accounts for this moderation of temparature

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Norway's proximity to warm ocean currents brought from the gulf stream likely account for the moderate annual temperature pattern.

Type 11b fast twitch muscle fibers are those used in a short sprint
a. True
b. False

Answers

The correct answer for this question would be A) TRUE.

Answer:

true

rate and hit that thank button hope you get this right because i did thank you

Explanation:

❤️❤️❤️❤️❤️❤️❤️❤️

Nucleotides are added to the growing dna strand during the _________ phase

Answers

nucleotides are added to the growing dna strand during the core phase

How do enzymes maintain homeostasis at the cellular level?

Answers

They help to break down substances into a harmless substance that can be used by the body. without enzymes your body could not break down these substances.      

In _____, the alveolar walls break down, adjacent alveoli fuse, and the lungs lose their elasticity.

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In Emphysema, one form of chronic obstructive pulmonary disease (COPD), alveolar walls breakdown, alveoli fuse creating more open spaces, and the lungs lose their elasticity. The result is "trapped air" which becomes difficult to expel upon expiration, thus an expiratory condition.

Why is it important that antibodies have a symmetrical quaternary structure? to enable binding to many different antigens to create a variable region to create two identical binding sites for antigens to ensure a stable structure?

Answers

Final answer:

Antibodies have a symmetrical quaternary structure that is important for several reasons. It enables binding to many different antigens, creates a variable region for different specificities of binding, and ensures a stable structure for proper immune function.

Explanation:

Antibodies have a symmetrical quaternary structure for several important reasons. One reason is to enable binding to many different antigens. The symmetrical structure allows for the creation of a variable region within the antibody, which allows for different antibodies to have different specificities of binding. Additionally, the symmetrical structure creates two identical binding sites for antigens, which increases the efficiency and effectiveness of antibody-antigen interactions. Finally, having a symmetrical structure ensures a stable antibody structure, allowing for the proper functioning of the antibody in the immune response.

Which statement about how organisms depend on abiotic factors in an aquatic ecosystem is not true? a. most living organisms can survive in environments with several different temperature and salinity levels b. both aquatic plants and animals depend on dissolved oxygen for respiration c. abiotic factors that impact an aquatic ecosystem include temperature, salinity, flow, and dissolved oxygen in the water d. abiotic factors of an aquatic ecosystem determine what kind of life can exist in that environment

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I think the answer is A. most living organisms can survive in environments with several different temperature and salinity levels. 

Which part of an enzyme molecule binds to its associated substrate?

Answers

The part of the enzyme molecule that binds to its associated substrate is ACTIVE SITE.
The active site contains the catalytic groups which are amino acids which promote the formation and the break down of bonds. By breaking and forming new bonds, the enzyme substrate interaction brings about the formation of the transition state.

Which of these is a process during which the hydrosphere interacts with the geosphere?

1. Solidification of water into ice
2. Absorption of rainfall by soil.
3. Evaporation of rainfall from puddles.
4. Condensation of water vapor into water.

Answers

The correct answer is "Absorption of rainfall by soil." The hyrdosphere refers to all water on the earth's surface. The geosphere, in this context, refers to the solid parts of the earth (rocks, sand, etc.) Since rain is part of the hydrosphere and soil is part of the geosphere, rain soaking into the soil would be an interaction between the two. The other choices deal with changes in the hyrdrosphere, but there is no interaction with the geosphere.

The brain and spinal cord are covered and protected by three connective tissue layers called __________.

Answers

The meninges are three layers of protective tissue called the dura mater, arachnoid mater, and pia mater that surround the neuraxis. The meninges of the brainand spinal cord are continuous, being linked through the magnum foramen.

Final answer:

The three protective layers of connective tissue covering the brain and spinal cord are known as the meninges, consisting of the dura mater, arachnoid mater, and pia mater.

Explanation:

The brain and spinal cord are covered and protected by three connective tissue layers called meninges. These layers are, from the outermost to the innermost, the dura mater, the arachnoid mater, and the pia mater. The dura mater is a robust and durable membrane that provides a strong protective sheath over the brain and spinal cord. The arachnoid mater is a web-like layer that sits beneath the dura mater. Finally, the pia mater is a delicate membrane that closely envelopes the surface of the brain and spinal cord, following the contours of these structures closely. Between the arachnoid and pia mater lies the cerebrospinal fluid, which offers additional protection and cushioning to the central nervous system.

N pea plants there is complete dominance for the trait of flower color. the p allele produces purple flowers and p produces white flowers. a cross of two pea plants which are both heterozygous for flower color will produce offspring with the genotypic ratio

Answers

PP-  purple homozygote
pp- white homozygote
Pp- purple hetrozygote

If these flowers cross, we obtain heterozygote offsprings with a genotype: Pp (100% of them will be like this)

Now, if those offsprings cross with each other: Pp x Pp
results:
  1/4 would be purple  homozygote -> PP
  1/4 would be white -> pp
  2/4 would be purple heterozygotes -> Pp
Genotipic ratio: 3:1 (3 are purple; 1 is white)

A grocery store newspaper claims that apple cider and honey can cure cancer, bronchitis, acne, bad breath, heart disease, athlete's foot, asthma, the common cold, and other ailments. a shopper decides to consume apple cider and honey exclusively. what questions should the shopper have asked before adopting the apple cider and honey diet?

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The shopper should first ask if this claims created by the newspaper is true and is backed up by actual facts. While apple cider and honey do have positive benefits, it is not the answer to all ailments.
Assuming that everything said was true, the shopper then must know whether or not he/she has allergies to apple cider and honey like itching, rashes, difficulty in swallowing, etc.
Lastly, the shopper should ask how much apple cider and honey should he/she take. Too much of both can lead to adverse side effects. If he/she were to consume apple cider and honey exclusively, then they should visit a doctor or a nutritionist in order to get the right amount of intake.
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