The sulfhydryl group in hair proteins is responsible for the property of hair that allows it to be straightened through heat and chemical treatments.
Explanation:The functional group responsible for the property of hair proteins that allows heat and chemical treatments to straighten curly hair is the sulfhydryl group. The sulfhydryl group, also known as the -SH group, plays a crucial role in the formation of disulfide bonds which contribute to the overall structure and shape of hair.
When hair is exposed to heat or certain chemicals, such as those found in straightening treatments, the disulfide bonds in the hair proteins can be disrupted. This allows the hair to be reshaped and appear straight.
An example of a chemical treatment that exploits this property is a keratin treatment, which uses a product containing formaldehyde and heat to break and reform the disulfide bonds in the hair, resulting in straightened hair.
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The type of line recognized by the brain and eyes but is not actually present.
these group of cells represent different ___
a. organelles that carry out different functions
b. tissues in which similar cells function together
c. organs that help to carry out a specific life activity
d. systems that are responsible for a specific life activity
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Answer:
b. tissues in which similar cells function together
Explanation:
I got it right on my test.
Tundra means “treeless land.”
True or False
The statement that 'Tundra' means 'treeless land' is true. Tundra is a term used to describe the barren landscapes in extreme latitudes of the Earth where trees can't grow due to harsh conditions.
Explanation:The statement is indeed true. 'Tundra' is a term used in physical geography that really means 'treeless land'. This term is generally used to describe the cold and often barren landscapes found in the extreme northern or southern latitudes of the Earth, where the harsh climate conditions make it difficult for trees to grow. In a tundra biome, most of the vegetation consists of grasses, mosses, and lichens, all of which are better adapted to the cold temperatures and short growing seasons.
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Dna is wrapped around proteins called _____ to form a chromosome.
Final answer:
DNA in eukaryotic cells is wrapped around histone proteins to form nucleosomes, which create the 'beads on a string' structure. These are further compacted to form chromosomes, especially during cell division.
Explanation:
DNA is wrapped around proteins called histones to form a chromosome. Eukaryotic DNA, which is negatively charged due to phosphate groups, is tightly wound around these positively charged histone proteins. The formation begins with DNA winding around an octamer of histones to create a structure known as the nucleosome. This structure resembles "beads on a string", with each "bead" representing a nucleosome and the string being the linker DNA.
The arrangement is then coiled into a 30 nm fiber and, during cell division, becomes even more densely packed into chromosomes by additional scaffold proteins. This packaging method is central for fitting DNA into the nucleus of eukaryotic cells and for the regulation of gene expression.
Which shows the pathway of the egg through the reproductive system?
A. ovary → fallopian tube → vagina → uterus
B. vagina → uterus → fallopian tube → ovary
C. fallopian tube → ovary → uterus → vagina
D. ovary → fallopian tube → uterus → vagina
Answer:
D. ovary → fallopian tube → uterus → vagina
Explanation:
The egg/ovum develops in ovary. Ovary is a specialized organ in female reproductive system which is meant for the production and development of ovum. The ovum lies with in the follicle present inside ovary. The follicles mature from primordial follicle to primary follicle which then matures into secondary follicle, secondary follicle in turn matures into tertiary follicle and eventually it forms graafian follicle within the ovary. During the development of ovum, these follicles undergo several physiological changes. On the day of ovulation, graafian follicle ovulates its egg into the fallopian tube which is a part of female reproductive system. The fallopian tube has finger like projections named fimbriae which act as the receptor of the ovum. After that comes uterus which is also known as womb where embryo gets implanted. The uterus ends in vagina which is a part of birth canal.
The vascular pressure that declines from roughly 35 mm hg to about 18 mm hg is the
Approximately 40 of fatal highway crashes are alcohol-related.
a.true
b.false
A cell is placed in a water solution with the same salt concentration as the cell. The cell is placed in a _____.
hypotonic solution
hypertonic solution
isotonic solution
The answer is isotonic solution.
Which component of peanut butter rutf supplies essential amino acids?
Peanut butter contains amino acids such as isoleucine and methionine.
What is peanut butter?About 61.6 grams of protein are found in one cup of peanut butter. Additionally, peanut butter is only sufficiently rich in 4 of the 9 necessary amino acids, including isoleucine, lysine, methionine, threonine, and valine.
To complement the protein profile, combine peanut butter with carrots, pumpkin seeds, hedge mustard seeds, crimini mushrooms, or lotus seeds.
Peanut butter does contain abundant amounts of 4 out of the nine essential amino acids. However, peanut butter is a little short on isoleucine, lysine, methionine, threonine and valine.
Therefore, Peanut butter contains amino acids such as isoleucine and methionine.
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Which vector would be the best choice for cystic fibrosis gene therapy and why?
The vector that would be the best choice for cystic fibrosis gene therapy is adeno-associated virus for it has valuable reasons. First, it is huge enough to carry the gene, second, it will infect the right type of tissue, third, it will not cause an immune response and lastly, it infects the particular cells that divide irregularly. Therefore, this vector will definitely treat cystic fibrosis for it can target affected cells, which is a great help in the normal functioning of an organ.
Light energy from the sun is converted by plants into _____. electricity chemical energy leaves mechanical energy
Answer:
chemical energy
Explanation:
How can pools of blood aid in reconstructing a crime scene?
He movement of which kind of molecules is controlled by osmosis?
15 POINTS Two puppies are born in the same litter.One has blue eyes and the other has brown eyes.Develop a hypothesis as to why the puppies have different eye color.Justify your hypothesis in two or more complete sentences
The genetic makeup of a trait is represented by two letters. what do these letters represent?
What is the safest way to carry a microscope? One student should hold onto the base and one student shouldWhat is the safest way to carry a microscope? One student should hold onto the base and one student should grasp the arm. Two students should hold opposite sides of the microscope base. Place one hand under the base and grasp the arm with the other hand. Place both hands securely around the base of the microscope. grasp the arm. Two students should hold opposite sides of the microscope base. Place one hand under the base and grasp the arm with the other hand. Place both hands securely around the base of the microscope.
Answer: Place one hand under the base and grasp the arm with the other hand.
A microscope is a device that is used to magnify and observe small living and non-living entities. These microscopes are expensive instruments and need to be handle carefully. The correct way to handle a microscope is to place the hand under the base of the microscope, this provides support to the instrument. The other hand should be used to grasp the arm, this provides a hold over the instrument. This is the safest way that assures proper handling and transfer of microscope from one place to another manually.
Habitat destruction is the leading cause for declining populations of species on our planet. Due to human development, industry, and forestry, humans are destroying the habitat of many species at an alarming rate. Consider the bald eagle. The bald eagle population was threatened in the late 60s and early 70s. Thanks to an aggressive bald eagle protection program, bald eagle numbers in the wild have soared as seen in the population graph above. The bald eagle's population very nearly reached extinction. Why did the bald eagle's declining population make it more vulnerable to extinction? A) As populations decline, reproduction stops B) As populations decline, less resources are available C) As populations decline, there is less genetic diversity D) As populations decline, birds migrate farther away from other populations
C) As populations decline, there is less genetic diversity
As populations decline, there is less genetic diversity The bald eagle's population reached alarmingly low numbers due to habitat loss and with low populations, there is not as much genetic variability. With fewer variations, a species survival is difficult to overcome without conservation efforts.
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Should commercial fruit farmers be allowed to use ethylene to accelerate the ripening of fruit for the market? Why or Why not?
The answer is: NO
Accelerated ripening of fruits lowers the quality of the fruits because it circumvents the natural process of ripening. In some cases of accelerated ripening, one finds a premature fruits looking ripe. In other cases, it causes ununiform ripening and also causes hastened senescence reducing shelf life.
The commercial fruit farmers should not be allowed to use ethylene.
Though ethylene is a natural growth regulator in the plant, if it is not applied in limited quantity it produces adverse effects such as overly ripened fruits, yellowing of green fruits and fruit becoming excessive soft and loose to pre maturity. It leads to chlorophyll destruction and also inhibits vegetative tissue. It also inhibits auxin transport, flower development, shoot and root growth.
What do all carbonate minerals have in common?
what are spores and would they be located on the fruiting body
A specimen is 0.2 mm long. Calculate the length of its image if it magnified by 1000 times.
Which plane shows brain structures as they would be seen from the front?
The plane that shows brain structures as seen from the front is the frontal or coronal plane. This vertical plane divides the brain into front and back regions. It runs parallel to the eyes or ears.
The vertical plane that shows brain structures as they would be seen from the front is called the frontal or coronal plane. This plane runs parallel to the eyes or ears and divides the brain into front (anterior) and back (posterior) regions. For example, a slice of the brain taken along the coronal plane would look similar to slicing a loaf of bread with the eyes at the front, allowing you to see both the left and right side structures positioned frontally.
Which human activity does not affect the Earth system? (1) disposing of toxic wastes (2) converting solar energy (3) clearing land for farming (4)
burning natural gas and coal
The main energy resource used by industrialized countries is
A nurse is providing discharge instructions for a client with a diagnosis of gastroesophageal reflux disease (gerd). what should the nurse advise the client to do to limit symptoms of gerd
To manage GERD symptoms, avoid heavy lifting and drinking alcohol, eat small, frequent meals, and stay upright after eating. Additionally, avoid certain foods and consider weight loss, smoking cessation, and loose clothing. Medical treatment options are available if lifestyle changes are insufficient. Option a, c, d are correct.
The nurse would provide the following recommendations to a client with Gastroesophageal Reflux Disease (GERD) to limit symptoms:
Avoid heavy lifting: This helps reduce abdominal pressure, which can exacerbate reflux symptoms.Avoid drinking alcohol: Alcohol can weaken the lower esophageal sphincter and increase acid production.Eat small, frequent meals: This can help prevent the stomach from becoming too full and reduce reflux.Remain upright for at least three hours after eating: Lying down after eating can cause acid to move up into the esophagus.Avoid foods that worsen GERD symptoms, such as fatty foods, peppermint, chocolate, coffee, and spicy foods.In addition, weight loss for those who are overweight, quitting smoking, and avoiding tight-fitting clothing can also help manage GERD symptoms. If lifestyle modifications are not effective, medications or surgery may be necessary.
Complete question as follows:
The nurse is providing discharge instructions for a client with a diagnosis of gastroesophageal reflux disease (GERD). Which recommendations would the nurse give to the client to limit symptoms of GERD?
a. Avoid heavy lifting
b. Lie down after eating
c. Avoid drinking alcohol
d. Eat small, frequent meals
e. Increase fluid intake with meals
f. Wear an abdominal binder/girdle
How does the structure of a red blood cell relate to its function?
Due to its biconcave shape, red blood cells have the ability to deliver the amount of oxygen to various organs and tissues of the body of an individual.
What do you mean by Red blood cells?Red blood cells may be defined as a type of blood cell that is made in the bone marrow and found in the blood which contains hemoglobin.
Red blood cells do not have a nucleus in their structure and contain hemoglobin which increases the affinity of oxygen to bind with it and transport this bound oxygen to the whole body through the transport of bounded oxygen with hemoglobin particles.
Therefore, the function of RBCs with respect to their structure is described above.
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How do worms reproduce?
a. only sexually.
b. only asexually.
c. both sexually and asexually.
d. none of the above?
Worms, depending on the species, can reproduce option c. both sexually and asexually. Annelids, like earthworms, can reproduce in both ways, whereas flatworms generally reproduce sexually.
They fertilize their own eggs after exchanging sperm with another worm during sexual reproduction. They can also reproduce asexually by budding or fission, for example.
Flatworms, on the other hand, typically reproduce sexually. After fertilization, a single flatworm produces both eggs and sperm, and the eggs turn into larvae outside the adult flatworm's body.
Nematodes, like C. elegans, also use a variety of reproductive methods. Depending on the species, these may include dioecious reproduction, monoecious reproduction, self-fertilizing hermaphrodites, or even asexual reproduction through parthenogenesis.
In starfish, pink boy color(P) is dominant to orange(p) , and thick eyebrows(T) are dominant over thin(t) ones. Patrick , who is heterozygous for body color but purebred for thick eyebrows , has met Patti , who is recessive for both traits.
What's patti's phenotype?
Is it possible for the new couple to have offspring that resmeble their mother? explain?
If an experiment starts with 6 bacteria cells and ends with 96 bacteria cells, how many generations did the cells go through?
In order to calculate the number of bacteria generations, you use logarithms. Taking the log base 2 of the final number of bacteria divided by the initial number gives approximately 4 generations.
Explanation:The generational growth of bacteria cells is typically exponential, doubling with each generation. Since we're starting with 6 cells and ending up with 96, we need to figure out how many times 6 needs to be doubled to get 96. This can be calculated by using the formula of logarithm base 2. Firstly, divide 96 by 6 to get approximately 16 then, calculating the base 2 logarithm of 16, gives us about 4. So the cells went through about 4 generations.
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If aden- means gland, what word could mean a tumor of the sebaceous glands?
Final answer:
The term for a tumor of the sebaceous glands combining 'aden-' for gland and '-oma' for tumor is 'sebaceous adenoma', which is a benign growth originating from the oil-producing sebaceous glands.
Explanation:
If the term "aden-" refers to a gland and we are discussing a tumor of the sebaceous glands, the medical term for such a tumor would often include the suffix "-oma", which refers to a tumor. Thus, the word that could describe a tumor of the sebaceous glands is "sebaceous adenoma". A sebaceous adenoma is a benign tumor that arises from the sebaceous glands which are responsible for producing sebum.
Sebum is the oily substance that helps to lubricate and protect the skin and hair. While sebaceous adenomas are usually not serious and often do not require treatment, they could potentially indicate an underlying condition if they are multiple or irregular.