Answers
Answer:
The solubilities in water of the three molecules from most to least soluble is in the following order: phosphate > deoxyribose > guanine.
Explanation:
The phosphate group is the most water-soluble due to it being very much negatively charged .
The deoxyribose which has several hydroxyl groups, is the next most water-soluble molecule.
The guanine molecule is hydrophobic, therefore, it is the least soluble in water.
A DNA molecule is composed of the three molecules: deoxyribose sugar, a phosphate group and a nitrogenous base which could either be a purine or a pyrimidine.
The three dimensional structure of DNA is such that the the phosphate groups and deodyribose sugars form the backbone of the structure on the outside of the DNA double helix where they are exposed to the aqueous environment of the nucleus. On the other hand, the hydrophobic nitrogeneous bases are located in the interior of the double helix where they are excluded from excludedthe aqueous environment of the nuclues. This structural arrangement is in accordance with the solubility of the molecules where the water-soluble phosphates and sugars are exposed to water while the water-insoluble bases are away from water.
Related Questions
fertilization is the process by which an a)egg and pollen combine b)embryos grow into plants c)animal carries pollen between plants d)ovule breaks open and release seeds
Answers
Answer:
l
Explanation:
What are the 6 regions of the
human body from which hair can
be derived?
Answers
Answer:
Hair is made of a tough protein called keratin. A hair follicle anchors each hair into the skin. The hair bulb forms the base of the hair follicle. ... Blood vessels nourish the cells in the hair bulb, and deliver hormones that modify hair growth and structure at different times of life, if that answers your question.
Explanation:
The six (6) regions of the human body from which hair can be derived are:
1. Head.
2. Eyebrow.
3. Beard.
4. Pubic area.
5. Body.
6. Armpit (underarm).
Hair can be defined as a threadlike, keratinous filament that typically grows out of the epidermis. Also, an epidermis is the outer layer of the skin.
Basically, the hair comprises two main parts and these are:
The follicle.The hair shaft.Some of the macroscopic and microscopic properties of hair include:
Hair length.Hair color.Pigmentation of the cortex.Types of scales on the cuticle.Hair curliness.Pattern of the medulla.Generally, hair can be found or grow in different regions of the human body and these include the following:
1. Head.
2. Eyebrow.
3. Beard.
4. Pubic area.
5. Body.
6. Armpit (underarm).
7. Eye lash.
8. Nose.
9. Finger.
Read more: https://brainly.com/question/23241629?referrer=searchResults
Plz help me well mark brainliest if you are correct!
Answers
Answer:
Explanation:
Uh this is gonna be kinda hard cause they are all examples of renewable resources. . .
but I would just say go with what the other pearson said :D
.What are two reasons hypoxic tumors are
are resistant to chemotherapy?
Answers
Answer:
chemotherapy target rapidly proliferation cells and there is poor penetration of many drugs to tumor cells that are located distal to functional blood vessels hypoxic cells are also likely to resistant to chemotherapy
10. What causes root pressure, and what is the function of root pressure for the plant?
Answers
Answer:
Root pressure, in plants, a force that helps to drive fluids upward from the soil into the water-conducting xylem vessels. It is primarily generated by osmotic pressure in the cells of the roots and is partially responsible for the rise of water in plants.
Explanation:
1.Non-living things, such as a car, often show characteristics similar to those of
living organisms.
a) State which characteristic of a living organism matches each of the descriptions
linked to a car.
(i)
burning fuel in the engine to release energy...
[1]
(ii)
headlights that switch on automatically in the dark.
(iii) filling the car's tank with fuel..
. [1]
(iv)
release of waste gases..
-- [1]
b) Identify one characteristic of living things that is not carried out by a
car......
... [1]
Answers
Answer:
burning fuel in the engine to release energy...
[1]
Explanation:
i think
3: What do the cells do with the molecules?
Answers
Complex organic food molecules such as sugars fats and proteins are rich sources of energy for cells because much of the energy used to form these molecules is literally stored within the chemical bonds that hold them together
Which phase describes "movement away from each other" on a molecular level?
A) Solid
B) Gas
C) Liquid
D) Methane
Answers
Answer:
B
Explanation:
gas particles are faster and move free
gas molecules move insanely fast and almost bounce away from each
i hope this helps
The diagram above depicts a karyotype of an individual human. Which of the following statements concerning the karyotype in the diagram is true? Select all that apply.
The diagram indicates an individual with an extra sex chromosome
The diagram illustrates a genetic condition found in females.
The diagram illustrates the results of nondisjunction during gamete formation.
The diagram indicates a mechanism for increasing genetic diversity in subsequent generations.
Answers
Answer:the diagram illustrates the results of non disjunction during gamete formation.
Explanation:
The following statements concerning the karyotype in the diagram is true - The diagram illustrates the results of nondisjunction during gamete formation.
Karyotype
Karyotype refers to the number and appearance of chromosomes present within the nucleus of a eukaryotic cell. It is illustrated as a diagram such as given in the question.
There is no Down's syndrome as the karyotype demonstrates a normal pair of chromosome 21. In this karyotype, there is an extra X-chromosome that depicts non-disjunction during either oogenesis or spermatogenesis (gamete formation) in the parents leading to the 23rd trisomy.
Learn more about Karyotype:
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Which statement is true about all adaptations? O A. They can be lost.
O B. They enhance survival.
O c. They reduce reproduction.
O D. They are learned.
Answers
Answer:
B. They enhance survival
Which of the following statements about DNA (deoxyribonucleic acid) is NOT true?
A. Varied chromosomes make up DNA.
B.Genes are comprised of segments of DNA.
C. Genetic material is passed from parent to offspring via DNA.
d. DNA is a set of instructions which determines the traits of an organism.
ND WHOEVER HAS A LINK OR DOES/SAYS SOMETHING IRRELEVANT DO NOT COMMENT
Answers
Answer:
I think D is incorrect.
Explanation:
BTW THOSE ARE BOTS MY SILLY SELF FR SEARCHED IT UP ON MY COMPUTER AND STUFF KEEP POPPING UP LOL. but glad it's my school computer. :) HOPE THAT HELPED
Night blindness (n) is a sex-linked recessive trait. A woman who is night blind marries a man who is not night blind. What are the genotypes of both individuals?
Answers
Answer:
Genotype of night blind woman - XnXn
Genotype of normal man - XY
Explanation:
Given
Night blindness (n) is a sex-linked recessive trait. Let us say it is X linked recessive
In this case a man with XY genotype having a diseased X allele will be night blind while a woman will have night blindness if both the X allele are diseased . In case if only one X allele is diseased in women then, she will be a carrier of night blindness defect
Genotype of night blind woman - XnXn
Genotype of normal man - XY
A scientist injects a drug called rifampicin, which inhibits RNA synthesis, into a bacterium. What is the most likely direct result of this alteration?
The bacterial DNA will stop replicating.
The bacterial DNA will replicate in an uncontrolled way.
The process of protein synthesis will stop in the bacterium.
Answers
The most likely direct result of this alteration is that the bacterial DNA will stop replicating. Thus, the correct option for this question is A.
What is Rifampicin drug used for?The drug Rifampin is used to treat tuberculosis (TB) in many different parts of the body. It is also used by patients who have meningitis bacteria in their nose or throat who do not show symptoms of the infection to prevent the spread of the bacteria to other patients.
Rifampin specifically inhibits bacterial RNA polymerase. It is an enzyme that is responsible for DNA transcription, by forming a stable drug-enzyme complex with a binding constant of 10(-9) M at 37 C. The corresponding mammalian enzymes are not affected by rifampin.
Therefore, the most likely direct result of this alteration is that the bacterial DNA will stop replicating. Thus, the correct option for this question is A.
To learn more about Rifampicin, refer to the link:
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1 pts
Question 9
Which of these is an example of biomass energy?
O A coal-burning generator.
O A gasoline-burning automobile.
O A wood-burning stove.
O An automobile that operates on fuel cells.
Answers
Mammals and plants don't belong in the same domain
Answers
Answer:
True
Explanation:
many people think they can live together they cant
PLEASE ANSWER FAST
Which type of nerve cell receives messages from the environment?
A. Interneuron
B. Outer nerve cell
C. Motor neuron
D. Sensory neuron
Answers
Answer:
D. Sensory Neuron
Explanation:
Sensory neurons are the nerve cells that are activated by sensory input from the environment.
Answer:
D. sensory neurone
Explanation:
sensory neurone receives information via their receptors, which are part of the peripheral nervous system, and convert this information into electrical impulses.
How many tropic levels are there in the following food chain?
algae —> mosquito larvae —> dragonfly larvae —> trout
Answers
Answer:
There are 4 trophic levels in the following food chain.
. Which of these is the most powerful force of weathering and erosion? *
1 point
wind
moving water
ice
gravity
PLESE SOMEONE HELP ME !!
Answers
How are Killer Whales like the Wolves of the Rocky Mountains? And is this innate or instinctive behavior?
Answers
Describe the differences and similarities between lecithin and cephalin. Match the words in the left column to the appropriate blanks in the sentences on the right. ResetHelp Lecithins and cephalins are both sphingolipids; they consist of glycerol with fatty acids forming bonds with the first and second groups. The third group of the forms a with phosphoric acid, which forms another bond with an amino alcohol. In lecithins, the amino alcohol is ; in cephalins, the amino alcohol is usually .
Answers
Answer:
Here, we have a composition passage and we are required to fill in the with missing words. The missing words are highlighted in bold format and underlined.
Lecithins and cephalins are both glycerophospholipids; they consist of glycerol with fatty acids forming ester bonds with the first and second hydroxyl groups. The third hydroxyl group of the glycerol forms a phosphate bond with phosphoric acid, which forms another phosphate bond with an amino alcohol. In lecithins, the amino alcohol is choline; in cephalins, the amino alcohol is usually ethanolamine.
Explanation:
Lecithin is a chemical complex composed primarily of fatty acids, glycerol, phosphoric acid, and choline. It can be present in egg yolks, soybeans, sunflower seeds, and plant seed cells and is completely normal. Soybean and sunflower lecithins contain much more important fatty acids than rapeseed lecithin, making them nutritionally more useful.
Phosphatidylethanolamine, also known as cephalin, is a phosphoglyceride that, like phosphatidylcholines and lecithins, is a component of biological membranes. A glycerol residue esterified by two fatty acids and a phosphoethanolamine residue gives rise to phosphatidylethanolamines. They're made by combining CDP-ethanolamine with diglycerides and releasing a CMP molecule. Phosphatidylcholines are formed when S-adenosylmethionine methylates the amine in ethanolamines. They're mostly found in the inner layer of plasma membranes' lipid bilayers.
The primary source of the specificity of enzymes is ________. The primary source of the specificity of enzymes is ________. their polarity, which matches that of their specific substrate their shape, which relates to the lock-and-key model their bonded transition metal, which is specific to the target substrate their delocalized electron cloud their locations within the cell
Answers
Answer:
their shape, which relates to the lock-and-key model
Explanation:
Enzymes are biological catalysts that are proteinous in nature. Their proteinous nature implies that they are made of amino acids, which forms a three-dimensional shape that accounts for their functionality and specificity. This means that enzymes are substrate-specific because of their 3D shape.
The three-dimensional shape of an enzyme determines the kind of substrate it will bind to. Enzymes, generally, catalyze reactions by binding to a substrate at their active site. This binding follows a lock and key pattern or model. In a nutshell, the primary source of specificity of enzymes is attributed to their SHAPE, which relates to the lock-and-key model.
Why are populations with high levels of genetic diversity more stable than populations with low levels of genetic diversity?
A.
Populations with high levels of genetic diversity are more likely to have individuals that will undergo
natural selection if conditions
change.
B. Populations with high levels of genetic diversity are
to more likely to have individuals with traits that help them survive if conditions
change.
X
C. Populations with high levels of genetic diversity are less likely to interbreed with other populations.
D.
Populations with high levels of genetic diversity are less likely to have high levels of variation in
alleles.
Answers
Answer:
d
Explanation:
.
How are mechanical waves produced?
Answers
Answer:A mechanical wave is created when a source of energy causes a vibration to travel through a medium. ... Both carry energy through a medium with out transferring matter. In transverse waves, the medium vibrates perpendicular to the direction of wich the wave travels.
Explanation:
Rainforests are not found in
a. Alaska
b. Greenland
C. Australia
d. Africa
Please select the best answer from the choices provided
A
B
C
D
Answers
Answer:
B. Greenland
Explanation:
Rainforests are found in Alaska, Australia, and Africa, but not Greenland.
All animals are ____ eukaryotes and are _____
Answers
Answer:
All animals are multicellular, heterotrophic eukaryotes.
Explanation:
Question 5 (5 points)
Plants and animals are both in the domain Eukarya - how are they similar?
| a)
Both have prokaryotic cells
| b)
Both are autotrophs
10
Both are heterotrophs
d)
Both have eukaryotic cells
А
B
0а
Oь
Ос
Od
C
D
Answers
Answer:
D) both have eukaryotic cells
Explanation:
Animals and plants are classified as Eukarya because they are eukaryotic meaning they have a nucleus. However, this doesn't mean that they get food the same way
5-10 statistics or interesting facts about kingdom Protista
Answers
What grade are you in?
Please Help Me i need a good grade!
FAST!!!!!!
Answers
Answer:
it's the second one/B because it's the only one that is correct :)
PLEASE HURRY IT'S FOR A TEST!!!!!!!!!
What is the difference between rotation and revolution? Which one determines the planets length of day and which one determines the length of the year
Answers
Answer:
Rotation is when an item or object (specifically the earth) rotates on it's axis.
Revolution is when an item (the earth) orbits or "revolves" around another one (the sun).
The rotation of the earth determines how long a day lasts while the revolution (or orbit) determines how long a year lasts (with all of the season).
Also you don't have to put the ones in the parentheses ()
9. Plants can reproduce
A. sexually and asexually.
B. constantly
C. only by cutting or budding.
D. only using pollination.
Answers
Answer:
A. sexually and asexually
Explanation:
A. Sexually and Asexually
Explanation:
there is a way they can have sexual reproduction by one parent