In the cell membrane phospholipids have a head and tail, the head having groups that are hydrophilic to water and the tails are hydrophobic in nature, hence option d is correct.
What is a phospholipid cell membrane?A phospholipid has a head and a tail. The phosphate group is located in the "head" of the molecule, which is hydrophilic, which means it will dissolve in water.
The "tail" of the molecule is made up of two hydrophobic fatty acids that do not dissolve in water. The heads (phosphate) are polar, but the tails (lipid) are non-polar.
The heads, which compose the exterior and inner linings, are "hydrophilic" (love water), but the tails, which face the cell membrane's interior, are "hydrophobic" (water-fearing) The phospholipids are the most prevalent membrane lipids.
Therefore due to the hydrophobic nature of the tail and the hydrophilic nature of the head, hence option d is correct.
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The DNA molecule is usually found in what form?
O Double helix
O Single strand
O Hexagon
Nucleotide
Answer:
Double helix
Explanation:
What kind of relationship is there between the oxpecker and a rhino? The oxpecker bird and the rhinoceros have a relationship. The oxpecker receives protection and obtains food from the ticks and other pests infesting the rhino’s skin. The rhino receives in return cleaning and early warning of approaching danger.
commensalism
parasitism
mutualism
Answer:
Mutualism
Explanation:
Because both of the animals are benefitting from each other. The bird is getting food and the rhino is getting cleaned.
What is the relationship between the Earth, moon, and Sun during a solar and Lunar eclipse?
Answer: The relationship between the Earth, moon, and sun during a solar and Lunar eclipse is Lunar eclipses only happen once the Moon is in the opposite direction of the Sun in the sky, a montly occurence, which is known as a full moon.
Explanation: Once the Moon passes between Sun and Earth, the lunar shadow is seen as a solar eclipse on Earth. When this happens, Earth passes directly between the Sun and the Moon, which causes its shadow to create a lunar eclipse.
Answer:
during a luner eclipse the earth comes between the sun and the sun and the moon blockimg the sunlight falling on the moon.
Someone please help me
Question: The organism shown is called Chlamydomonas. What domain does it belong to? Look at the parts. What do they tell you about this kind of organism?
Answer:
it belongs to the Eukarya domain
Explanation:
it has both plant and animal characteristics
CAN SOMEBODY PLSSSS STILL ANWSER I NEED THIS ASAP BIOLOGY HELP!!!!!!!!!!!!!! BRAILIESTT
Answer:
C, brainliest plz??
Explanation:
Heather presented to her class a report about the pancreas. Which statement in Heather’s report was not accurate?
Answer:
C. The pancreas triggers the development of secondary sex characteristics.
Explanation:
y e s
If more individuals are born with the advantageous trait in each generation, over time what do you predict will happen to the percentage (%) of the alleles (gene variety) that code for this trait in the population?
Answer:
The percentage (%) of the alleles that code for this trait in the population will increase, as more individuals are born with the trait.
Explanation:
The more individuals get born expressing the trait, the higher its frequency gets in the population. By generation, there are more individuals carrying the allele for the advantageous trait. These individuals reproduce and increase the probabilities of the progeny to inherit the mentioned allele. When this sequence keeps occurring in the population over many generations, the allele percentage will increase. On the other hand, the other allele or alleles will decrease. Probably, if there are no changes that might influence or affect this pattern, the alleles for the advantageous trait will fixate, while the other allele might get lost.
How does Amyotrophic lateral sclerosis disrupt homeostasis in the body? I NEED HELP pls
Answer:
ALS causes the motor neurons to gradually deteriorate, and then die. Motor neurons extend from the brain to the spinal cord to muscles throughout the body.
How many total autosomes are present ina
bug's normal karyotype?
Answer:
The insect species being studied has three pairs of homologous chromosomes. The first two pairs are autosomes; the last pair are sex chromosomes. Sex determination is the same as in humans (XX=female, XY=male).
Explanation:
I hope this helped, Have a Wonderful Day/Night!!!
I will give brainliest for the first person who gets this question correct
What was included in the original Pepsi-Cola recipe?
A coke from coal
B) saltpeter
C) digestive enzyme
D) heroin
Answer:
Heroin
Explain:
Active transport occurs through which type of biomolecule?
Proteins
Lipids
Carbohydrates
Nucleic acids
Nucleic acids. It is this becasue In my science call today they said this
You have an unknown
substance in the lab. It
conducts electricity well. If
you had to make a guess
about this substance, what
would you guess about it?
A. The substance is most likely a base.
B. The substance is most likely an acid.
C. You cannot determine whether the
Substance is an acid or a base from this
information alone.
will osmosis occur?
if so which direction?
The solution in the berzelius glass has a concentration of 50%, the other solution has a concentration of 30%. In osmosis water moves from the solution with a lower concentration to the solution with the higher concentration. Therefore, water will move from the 5%glucose,25%starch solution to the 20%glucose, 20%K⁺,10% iodine.
Which of the following ph values indicates a solution with the highest concentration of hydrogen ions
Answer:
1,2,3,4,5 and 6.
Explanation:
If a solution having pH values such as 1,2,3,4,5 and 6 indicates that the solution has the highest concentration of hydrogen ions because below pH 7 the concentration of hydrogen ions increases and the solution tends to more acidic. Highest concentration of hydrogen ions are present in a solution having pH 1 and when the pH value increases from pH 1, the concentration of hydrogen ions decreases.
Question 3
The surroundings where a particular species lives is known as its
1.abiotic zone
2.habitat
3.community
4.biomass
Answer:
habitat
Explanation:
becous community is for people
Answer:
its habitqt
Explanation:
leqrn this in 2nd grade
TIMED PLS HELP!!
Which of the following distinguishes how large supermarket chains are able to provide the public with fruits and vegetables for lower costs?
A. Large supermarket chains always provide the customer with the best prices, even if it means sacrificing their own profits.
B. Large supermarket chains usually buy food from overseas, which is generally cheaper than buying local foods
C. Large supermarket chains can negotiate prices because they have such a strong presence in the agricultural community
D. Large supermarket chains often buy food from farms that use cheap and unsustainable farming practices.
Answer:
C. Large supermarket chains can negotiate prices because they have such a strong presence in the agricultural community. Im sorry no one answers these
Which of the following examples come from renewable natural resources
Answer:
Milk, Leather, Paper, Cardboard
Explanation:
Milk, leather, paper, and cardboard all come from natural resources for the largest part:
Milk - Cows
Leather - Animal hide
Paper - Trees
Cardboard - Recycled paper
All of the mentioned are renewable because cows can breed, hide can be found on many animals, trees easily grow everywhere, and cardboard is made from recycled paper (which comes from trees).
Uranium, tin, iron, plastic, steel, and gold aren't renewable and (most of them) do not come from natural resources. Uranium is rare and only found in a limited source around the world, as well as other metals (tin, iron, steel, gold). As for plastic? Plastic is not natural nor renewable because it's created by man. All of the above mentioned (besides the answer) also takes thousands of millions of years to degrade naturally.
≧◡≦
Mocha here! If this answer helped you, please consider giving it brainliest because I would appreciate it greatly. Have a wonderful day!
Human curiosity and creativity have led to improvements in technology.
How have advances in technology affected scientists?
They have helped them develop logical hypotheses.
They have allowed them to prove their theories true.
They have allowed them to make more observations.
They have allowed them to think more critically.
Answer:
C. they have allowed them to make more observations
Explanation:
Human curiosity and creativity have led to improvements in technology. these advances in technology allowed scientists to think more critically. Thus, Option D is correct.
What is critical thinking ?Critical thinking is nothing but an analytical mode of thinking about any subject or problem based on logic, rationality, and synthesis.
By using this style of thinking a thinker can upgrade his quality of thinking, become intuitive.
In science, everyone must be cultivated with this practice by delving and asking questionaries' like where is the evidence?, what is reason behind? why is it so? etc.
Hence these attributes can be learnt through practice to become a critical thinker.
To become a critical thinker, some basic steps should be followed such as clarify the purpose, ask question, analyze by arguments, evaluate the result of arguments, synthesize or conclude from that arguments.
Hence, Option D is correct.
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The traits studied in the experiments involving the crossing of pea plants are seed shape and seed - Brainly.com
In the chart shown above,16 seeds are produced. Yellow(Y) is Dominant to Green(y) and Round(R) is Dominant to wrinkled (r). Which of the following lists the most likely distribution of phenotypes in these seeds?
A. 6 round yellow seeds : 4 round green seeds :
4 wrinkled green seeds : 2 wrinkled yellow seeds
B. 9 round yellow seeds : 3 round green seeds :
3 wrinkled yellow seeds : 1 wrinkled green seeds
C. 4 round green seeds : 4 round yellow seeds :
4 wrinkled yellow seeds : 4 wrinkled green seeds
D. 8 round yellow seeds : 2 round green seeds :
2 wrinkled yellow seeds : 4 wrinkled green seeds
Answer: B
Explanation:
An unidentified plant produces spores, has many cells, but does not have true leaves. What plant is it?
A. liverwort
В. fern
C. gymnosperm
D. angiosperm
An unidentified plant produces spores, has many cells, but does not have true leaves. It is a fern or the angiosperms. Thus, option C is correct.
What are angiosperms?Angiosperms, that are also known as flowering plants, have “seeds” that are sealed off within an “ovary”, while gymnosperms do not have fruits or flowers and have uncovered seeds on the surface of leaves. Seeds of gymnosperms are often arranged as “cones”.
The features and characteristics that distinguish angiosperms from gymnosperms are fruits, flowers, and “endosperm” in the seeds. Examples of “Angiosperms” are “monocots” like orchids, lilies, agaves, grasses and dicots like, peas, roses, sunflowers, maples and oaks. “Gymnosperm” examples include “non-flowering evergreen” trees like pine, fir and spruce.
Therefore,An unidentified plant produces spores, has many cells, but does not have true leaves. It is a fern or the angiosperms. Thus, option C is correct.
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HELLPP! ITS BIOLOGY
Answer:
So that in a guinea pig cross in the offspring the recessive trait —long hair— can be observed in 25%, the most probable genotype of the parents is heterozygous Ss.
Explanation:
In guinea pigs, for the characteristic hair length, short hair is the dominant allele and long hair is the recessive one.
In order for 25% of the offspring to express the recessive characteristic, the parents must have a recessive genotype, which can be seen in Punnett's Square:
P: Ss X Ss
Alleles S s
S SS Ss
s Ss ss
Where the offspring is:
50% Ss with short hair phenotype 25% SS with short hair phenotype 25% ss whose phenotype would be long hair.According to this, heterozygous parents for the characteristic long hair in guinea pigs have a 25% chance of having offspring with long hair.
Before a kidney is transplanted, It is important to match the tissue type of the donor with the tissues type of the recipient. State why this is necessary
HELP
What is a hydrogen bond?
Answer:
A hydrogen bond is a weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other.
Which is a resource that the National Park Service manages?
memorials
wildlife refuges
ecosystems
endangered species
Answer:
ecosystems
Explanation:
The resource that the National Park Service manages is wildlife refuges. Details about wildlife can be found below.
What is wildlife?Wildlife refers to living organisms or animals that are not domesticated and lives in their natural habitat.
In their natural habitats, these wildlife animals are being killed discriminately to the point of extinction.
This led to the development of national park reserves that are responsible for the management and safety of wildlife animals.
Therefore, the resource that the National Park Service manages is wildlife refuges.
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In 5-7 sentences, briefly define evolution and natural selection, then analyze the differences between the two concepts.
Answer:
evolution is change over a period of time
If the yellow allele is dominant (Y) and the green allele is recessive (y), what are the possible genotypes of a green offspring?
Answer:
yy
Explanation:
it can only be yy because you need 2 recessive genes to show a recessive trait.
A plant with Yy genes could pass the recessive genes on, but would still show the dominant trait.
The possible genotype of the green offspring is yy, i.e., recessive one and will express only in absence of dominant allele.
What is genotype?In a broad sense, the word "genotype" refers to an organism's genetic makeup; in other words, it describes an organism's entire set of genes.
In a narrower sense, the term can refer to the alleles, or variant forms of a gene, that an organism carries.
A genotype is a classification of the type of variant found at a specific location (i.e., a locus) in the genome.
Symbols can be used to represent it. For example, the letters BB, Bb, bb could be used to represent a specific variant in a gene.
In the given scenario, Y is dominant allele which will express in combination with y means the recessive one.
Thus, for expressing the green allele, it should be yy.
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PLEASE HELP ASAP WILL GIVE 20 POINTS ONLY ANSWER IF YOU KNOW THE ANSWER!!!!!!
Describe some home or business technology that use spectrometric equipment to analyze atmosphere or temperature
please help i’ll give the brainliest if you give a correct answer tysm
Answer:
C. how close earth is to the sun
Answer:
C
Explanation:
Why would horses from North America settle in southern Russia?
Are wild horses truly “wild,” as an indigenous species in North America, or are they “feral weeds”—barnyard escapees, far removed genetically from their prehistoric ancestors? The question at hand is, therefore, whether or not modern horses, Equus caballus, should be considered native wildlife.
The question is legitimate, and the answer important. In North America, the wild horse is often labeled as a non-native, or even an exotic species, by most federal or state agencies dealing with wildlife management, such as the National Park Service, US Fish and Wildlife Service, and the Bureau of Land Management. The legal mandate for many of these agencies is to protect native wildlife and prevent non-native species from causing harmful effects on the general ecology of the land. Thus, management is often directed at total eradication, or at least minimal numbers. If the idea that wild horses were, indeed, native wildlife, a great many current management approaches might be compromised. Thus, the rationale for examining this proposition, that the horse is a native or non-native species, is significant.
The genus Equus, which includes modern horses, zebras, and asses, is the only surviving genus in a once diverse family of horses that included 27 genera. The precise date of origin for the genus Equus is unknown, but evidence documents the dispersal of Equus from North America to Eurasia approximately 2–3 million years ago and a possible origin at about 3.4–3.9 million years ago. Following this original emigration, several extinctions occurred in North America, with additional migrations to Asia (presumably across the Bering Land Bridge), and return migrations back to North America, over time. The last North American extinction probably occurred between 13,000 and 11,000 years ago (Fazio 1995), although more recent extinctions for horses have been suggested. Dr. Ross MacPhee, Curator of Mammalogy at the American Museum of Natural History, and colleagues, have dated the existence of woolly mammoths and horses in North America to as recent as 7,600 years ago. Had it not been for previous westward migration, over the 2 Bering Land Bridge, into northwestern Russia (Siberia) and Asia, the horse would have faced complete extinction. However, Equus survived and spread to all continents of the globe, except Australia and Antarctica.
In 1493, on Columbus’ second voyage to the Americas, Spanish horses, representing E. caballus, were brought back to North America, first in the Virgin Islands, and, in 1519, they were reintroduced on the continent, in modern-day Mexico, from where they radiated throughout the American Great Plains, after escape from their owners or by pilfering (Fazio 1995).
Critics of the idea that the North American wild horse is a native animal, using only selected paleontological data, assert that the species, E. caballus (or the caballoid horse), which was introduced in 1519, was a different species from that which disappeared between 13,000–11,000 years before. Herein lies the crux of the debate. However, neither paleontological opinion nor modern molecular genetics support the contention that the modern horse in North America is non-native.
Equus, a monophyletic taxon, is first represented in the North American fossil record about four million years ago by E. simplicidens, and this species is directly ancestral to later Blancan species about three million years ago (Azaroli and Voorhies 1990). Azzaroli (1992) believed, again on the basis of fossil records, that E. simplicidens gave rise to the late Pliocene E. Idahoensis, and that species, in turn, gave rise to the first caballoid horses two million years ago in North America. Some migrated to Asia about one million years ago, while others, such as E. niobrarensis, remained in North America.
can y'all answer option 1 plz
