A diagram of the DNA
double helix is provided. Which of the following components of DNA is indicated by the arrow?
A-Hydrogen bond
B-Sugar-phosphate backbone
C-Guanine-Cytosine
D-Adenine-Thymine
Answers
Related Questions
simple diffusion (sd), facilitated diffusion (fd) and active transport (at) across a membrane. which process requires a concentration gradient of the transported molecule
Answers
Option D, active transport (AT) processes can establish a concentration gradient across a membrane.
Active transport involves the movement of chemicals from a low-concentration location to a high-concentration area in opposition to the concentration gradient. Being "active" means that this process uses energy (usually in the form of ATP). Active transport is the type of transport that can move sodium across the plasma membrane in a concentration gradient. Protein pumps move molecules during active transport in opposition to concentration gradients from low to high concentrations. Metal ions are among the substances that are moved by main active transport through the cell membrane.
The complete question is :
consider simple diffusion (SD), facilitated diffusion (FD), and active transport (AT) across a membrane. Which processes can establish a concentration gradient?
a. FD only
b. SD only
c. FD and AT
d. AT only
e. SD and FD
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Why is the cell membrane sometimes called the fluid mo-
saic model?
A Many small pieces make one moving design.
B
There is a lot of water in the cell membrane.
C The man who discovered its structure was named Mosaic.
D The cell membrane keeps fluids in the cell.
Answers
The cell membrane is sometimes referred to as the fluid mosaic model because A. Many small pieces make a single moving design (i.e. proteins arranged spread out like a mosaic).
The cell membrane, also known as the plasma membrane, is a thin structure consisting of two layers of lipids (lipid bilayer). Among the lipids consist of integral proteins and peripheral proteins arranged in a mosaic that surrounds a cell and each is inserted between two layers of lipids of a fluid consistency. Lipid molecules in cell membranes are amphiphilic, that is, they have a hydrophilic (polar) group on the head and a hydrophobic (non-polar) group on the tail. The cell membrane also consists of oligosaccharides, glycolipids, and cholesterol. Cholesterol is between the phospholipid molecules, and its presence can be reduces the fluidity of the cell membrane.
1) Who are the "Genii of the stream" mentioned in the third stanza? A) the azure flowers blowing in the wind B) the cats that are playing around the lake C) Tom and Susan who are playing with the cat D) the goldfish who cause the cat to fall in the water 2) Which statement BEST summarizes the moral of the story? A) Only the good die young. B) Pride goeth before a fall. C) Not all that glitters is gold. D) Don't count your chickens before they hatch. 3) In the phrase "Malignant Fate," what is the BEST definition for malignant? A) cruel B) gracious C) noble D) stubborn 4) What quality is produced by describing the ordinary cat in such ornate and polished language? A) a subtle humor B) a sense of longing C) an obvious distortion D) a bittersweet sentiment 5) What is the best definition for the word tabby as it is used in the poem? A) a cat B) a dog C) a goldfish D) a mischievous boy 6) Which of these BEST describes the speaker's point of view? A) Beauty cannot last forever. B) Things are not always as they seem. C) Following dreams requires courage and luck. D) The sea is filled with great dangers as well as vast beauty. 7) In general, what is the attitude of the poet toward the cat? A) hostile but nostalgic B) hostile and chastening C) sympathetic yet hostile D) sympathetic but chastening
Answers
A) the goldfish who cause the cat to fall in the water, B) Pride goeth before a fall. C) cruel, D) a bittersweet sentiment, E) a cat, F) Things are not always as they seem. and G) sympathetic yet hostile.
What is sympathetic?Sympathetic is a feeling or emotion of understanding, kindness, and compassion for the suffering or misfortune of another. It is an emotion that arises naturally in response to the pain and suffering of another, and can be expressed in words, thoughts, deeds, or a combination of all three. Sympathetic feelings often motivate people to take action to help another in need, or at least to offer words of comfort and support. Sympathetic people are often seen as warm and compassionate, and they are often looked to for advice and guidance in difficult situations.
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Why does the Cenozoic Era have epochs, but the Mesozoic and Paleozoic Eras do
not?
Answers
\The common use of epochs during the Cenozoic helps paleontologists better organize and group the many significant events that occurred during this comparatively short interval of time. Knowledge of this era is more detailed than any other era because of the relatively young, well-preserved rocks associated with it.
What part of the genome is used for a genetic fingerprint?
A. Chromosomes
B. Introns
C. Exons
D. Minisatellites
Answers
Answer:
A.chromosomes
Explanation:
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TRUE/FALSE. some careers emerge to address the environmental impact human behaviors and processes might be having on our planet.
Answers
True, some careers emerge to address the environmental impact human behaviors and processes might be having on our planet.
The majority of the actions people take in their everyday lives have a significant impact on the environment. These activities, from basic day-to-day processes to the products and services we use, all have an environmental impact. Environmental conservation refers to the protection, restoration, and sustainable use of environmental resources.
Environmental conservation as a career
Environmental conservation has become an industry in and of itself, with a growing demand for experts who can help conserve natural resources, implement more sustainable policies and practices, and educate others on the importance of environmental conservation. Environmental conservationists, environmental scientists, and environmental engineers are all examples of professions that deal with environmental conservation. These professions aim to improve the environment by addressing human processes and behaviors that are contributing to environmental degradation and developing new solutions to these issues.
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One family has more cars than what can fit in their driveway, so they park extra ones in their neighbor's yard. Over time, some spots of grass on the neighbor's lawn are no longer green near where the extra cars are parked. This scenario represents a tragedy of the commons. True False
Answers
Answer:
true
Explanation:
because of the fumes the car produces
Answer:
true
Explanation:
in this case, a tragedy of commons describes "oh, if we have this here, we will lose this natural resource", which complies to the fumes of the car and the tires killing the grass, which is the natural resource
Why is mucus and cilia first line defense?
Answers
Answer:
the cluos in the cilia
Explanation:
it helps for you
What is an invasive species? Give an example
This is actually for science not biology
Answers
Answer:
an invasive species is a organism that is brought over to area where the organism is not native to and then starts to populate in that area causing environmental problems.
Explanation:
sorry if I am wrong
which event is mostly responsible for increasing the opportunity for animals to develop more complex traits?
A. increase in genetic material (DNA)
B. jaws
C. bilateral symmetry
D. spinal column
Answers
Increase in genetic material (DNA) event is mostly responsible for increasing the opportunity for animals to develop more complex traits. The correct answer is option A.
The evolution of life on earth is marked by an increase in the amount of genetic material in living organisms. This increase in genetic material has enabled animals to develop more complex traits and adapt to a wider range of environments.
The gradual accumulation of genetic changes over time, as well as the movement of organisms into new environments, has led to the emergence of new species with unique physical and behavioral characteristics.
In many cases, these new species have been able to survive and thrive in their new environments because of the complex traits they possess, which allow them to compete for resources and avoid predators more effectively.
The correct answer is option A.
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3. Water is retained in a reservoir by concrele wall bacted by eorth. If the maximum water level is allowed to reach wighin 0.25 m of the 40 of the woll, whot is the recessory thicteness of the woll base to prevent arefurning obow A? (10 points) Assume the following material densities: woter = 1000 kg/m^3 concrele =2400mg/m^3 eorth =2000rgm^3 will K value 0.3
Answers
To prevent overturning about Point A and retain the water in the reservoir, the necessary thickness (t) of the concrete wall base can be determined. The analysis involves considering the forces acting on the wall and ensuring the equilibrium of these forces.
The weight of the water above the wall exerts a downward force, while the pressure exerted by the water against the wall contributes an upward force. By applying the principles of statics and considering the material densities and the K value, the required thickness of the wall base can be calculated.
The density of water, concrete, and earth, along with the K value, provide essential parameters for the calculations. By accurately evaluating the forces and pressures involved, the appropriate thickness of the wall base can be determined to ensure the stability and containment of the water in the reservoir.
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Which of these causes evolution?
A. Random mating
B. Natural selection
C. No mating at all
D. Extremely large population sizes
Answers
Natural selection causes evolution. The correct option is B.
What is natural selection?Natural selection refers to the process that leads to the adaptation of organisms to their environment.
Natural selection forces either select for or against traits. Traits that aid organisms in adapting are selected for, while those that do not aid in adaptation are selected against.
Traits that are selected for are allowed to perpetuate in the population while those that are selected against gradually fade from the population.
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Transcribed image text: CQ3: Below is one strand from part of the amelogenin gene. What is the nucleotide sequence of the other strand? 5' -CCCTGGGCTCT-3' A: 3'-ACTGTTAGATT-5' B: 3'-GGGACCCGAGA- C: 5'-GGGACCCGAGA- 5' D: 3'-CCCTGGGCTCT-5' E: 5'-CCCTGGGCTCT-3' CQ4:
Answers
CQ3: The nucleotide sequence of the other strand can be determined by applying the base pairing rules in DNA. Adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G).
Given the sequence 5'-CCCTGGGCTCT-3', the complementary strand would have the sequence 3'-GGGACCCGAGA-5'.
Therefore, the correct answer is Option B: 3'-GGGACCCGAGA-.
CQ4: The question is incomplete. Please provide the complete question for me to assist you further.
About NucleotideNucleotides are organic compounds consisting of a nucleoside and a phosphate group. It acts as a monomer that composes polymers in the form of nucleic acids, namely deoxyribonucleic acid and ribonucleic acid; both are important biomolecules that make up living things on Earth.
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what theory of biological development did herbert spencer use to formulate his ideas regarding human society?
Answers
Darwin's theory of biological evolution to human societies coined the term "survival of the fittest" to describe the competition between individuals and groups for resources.
Darwin's theory of evolution by natural selection is one of the most important concepts in the field of biology. It states that all species of organisms have descended from common ancestors, and that the diversity of life on Earth is a result of gradual changes that occur over long periods of time.
According to this theory, individuals with advantageous traits are more likely to survive and reproduce, passing on those traits to their offspring. Over time, these advantageous traits become more common in the population, while less advantageous traits may eventually disappear. This process is known as natural selection. Darwin's theory also emphasizes the importance of variation within a population, as it provides the raw material for natural selection to act upon.
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The process by which sperm is made is called
Answers
Answer: The process of producing mature sperm is called spermatogenesis. Sperm are produced in the seminiferous tubules of the testes and become mature in the epididymis. ... Spermatogonia lining the seminiferous tubule undergo mitosis to form primary spermatocytes, which are also diploid.
Explanation:
A male generative cell is called sperm. Sperm comprises a head, body and tail. It is an important reproductive gamete in males that combines with the egg to produce offspring.
The process by which sperms are produced is called spermatogenesis.
The male reproductive cell forms in the male reproductive gland called the testes.From one male germinal cell (2n) four sperm (n) are produced.Spermatogenesis undergoes mitosis and meiosis.By the process of spermiogenesis, the spermatid receives nourishment and grows into sperms.Therefore sperm are produced by spermatogenesis.
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What is the effect of the biogeochemical cycles?
Answers
Answer:
The effect of biogeochemical cycles is the recycling of matter in the biosphere. In biogeochemical cycle, the matter is moved in a pathway.
Explanation:
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Crown me as brainliest:)
Answer:
Hey babe, you answer:-
✓ ᴴᵘᵐᵃⁿ ᵃᶜᵗⁱᵛⁱᵗⁱᵉˢ ʰᵃᵛᵉ ᵍʳᵉᵃᵗˡʸ ⁱⁿᶜʳᵉᵃˢᵉᵈ ᶜᵃʳᵇᵒⁿ ᵈⁱᵒˣⁱᵈᵉ ˡᵉᵛᵉˡˢ ⁱⁿ ᵗʰᵉ ᵃᵗᵐᵒˢᵖʰᵉʳᵉ ᵃⁿᵈ ⁿⁱᵗʳᵒᵍᵉⁿ ˡᵉᵛᵉˡˢ ⁱⁿ ᵗʰᵉ ᵇⁱᵒˢᵖʰᵉʳᵉ. ᴬˡᵗᵉʳᵉᵈ ᵇⁱᵒᵍᵉᵒᶜʰᵉᵐⁱᶜᵃˡ ᶜʸᶜˡᵉˢ ᶜᵒᵐᵇⁱⁿᵉᵈ ʷⁱᵗʰ ᶜˡⁱᵐᵃᵗᵉ ᶜʰᵃⁿᵍᵉ ⁱⁿᶜʳᵉᵃˢᵉ ᵗʰᵉ ᵛᵘˡⁿᵉʳᵃᵇⁱˡⁱᵗʸ ᵒᶠ ᵇⁱᵒᵈⁱᵛᵉʳˢⁱᵗʸ, ᶠᵒᵒᵈ ˢᵉᶜᵘʳⁱᵗʸ, ʰᵘᵐᵃⁿ ʰᵉᵃˡᵗʰ, ᵃⁿᵈ ʷᵃᵗᵉʳ qᵘᵃˡⁱᵗʸ ᵗᵒ ᵃ ᶜʰᵃⁿᵍⁱⁿᵍ ᶜˡⁱᵐᵃᵗᵉ.
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which layer of the earth is made out of melted metal?
Answers
The outer core. A molten nickle- iron alloy.
Which component of blood allows oxygen from the air to move from the lungs to cells of the body?
white blood cells
platelets
plasma
red blood cells
Answers
Oxygen is very essential for the survival of organisms. The component of blood enable oxygen from the environment to move from the lungs to cells of the body are red blood cells.
What are red blood cells?Red blood cells, also known as red blood corpuscles, haematids, erythroid cells, and erythrocytes.
These are the most prevalent form of cells of blood and the vertebrate's primary mechanism of supplying oxygen to body tissues through blood flow with the help of hemoglobin.
It has hemoglobin that helps for the transport of oxygen from lungs to cells of body.
Thus, the correct option is D.
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In the 1940s and 1950s, Dr Barbara McClintock studied mosaic colour patterns in corn and discovered their unstable inheritance and the underlying mechanisms. In 1983 she was awarded the Nobel Prize in Physiology/Medicine for her discovery, and is now considered one of the most influential geneticists of the 20th century. (a) Name two synonymous names for the genetic elements that Dr McClintock discovered
(b) What can these genetic elements do, and what can the consequences be for a gene and for a host genome?
(c) Which gene function do these elements require for their activity, and what are the two classes that these elements can be assigned to, and how do these two classes function in a host genome? (d) Why did Dr McClintock initially find resistance to publish her findings and in the scientific community, to the point that she did not publish these for 20 years, and why were her ground-breaking research findings a paradigm shift in the end?
Answers
They are known by two synonymous names: transposable elements or transposons. These elements can move within a genome and have various consequences for a gene and the host genome.
(a) The two synonymous names for the genetic elements discovered by Dr. McClintock are transposable elements and transposons. These terms refer to segments of DNA that have the ability to move or transpose within a genome.
(b) Transposable elements can have various effects on genes and the host genome. They can insert themselves into a gene, disrupting its function and causing mutations. They can also influence gene expression by inserting near regulatory regions, affecting the level of gene activity. Additionally, transposable elements can cause genomic rearrangements, such as duplications, deletions, or inversions, altering the structure of the genome.
(c) The activity of transposable elements requires specific genes called transposase genes. Transposase enzymes catalyze the movement of transposable elements within the genome. Transposable elements can be classified into two main classes: Class I retrotransposons and Class II DNA transposons. Class I retrotransposons transpose via a copy-and-paste mechanism, where the element is first transcribed into RNA, then reverse transcribed back into DNA and inserted at a new location. Class II DNA transposons, on the other hand, move through a cut-and-paste mechanism, directly excising from one genomic location and reinserting into another.
(d) Dr. McClintock initially faced resistance and skepticism from the scientific community, which led her to withhold publishing her findings for nearly 20 years. At the time, the prevailing belief was that genes were fixed entities with stable positions in the genome. Dr. McClintock's discovery of mobile genetic elements challenged this view and was initially met with skepticism.
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How does water travel to the plant's leaves?
Question 4 options:
Into the leaves, up the stem, and through the stomata
Up the stem, into the roots, into the leaves
In the leaves, up the stem, into the roots
Into the roots, up the stem, and to the leaves
Answers
Into the roots, up the stem, and to the leaves
On a hot, dry day, the guard cells of plants close their stomata to conserve water. What impact will this have on photosynthesis?.
Answers
Plants' guard cells block their pores to conserve water on a hot, dry day. The effect will The necessary photosynthetic substrate, carbon dioxide, will have lower levels.
What five components makes up photosynthesis?Growing requires more than simply the bare necessities of water and sunlight. In fact, sunlight, carbon dioxide, moisture, soil organisms, and vitamins are the five main factors that affect very well how your plants or crops might very well grow.
What makes photosynthesis so crucial?Sunlight is converted into chemical energy via respiration, which would then be saved for later use. The biological systems on the planet largely receive energy from this method. It is not very effective by the category of morality engineering.
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Which of the following choices represents the approximate percentage of geologic time that humans have existed on Earth since its origin?
less than 1%
1.8%
11.8%
more than 25%
Answers
Answer:
less than 1%
Explanation:
The approximate percentage of the geologic time that humans have existed on the Earth since its origin is less than 1%.
The earth is about 4.6 billion years and much of its history has been without the present of human activities.
Hominis were the first human to appear on the surface of the earth. This was in the Miocene epoch which was about 6 million years ago. Compared to the age of the earth, this time lapse is very small and not up to 1%. Life first appeared on earth about 3.5billion years. Since then evolution has taken its due course to give what we have today.Are fingers made of diploid cells or haploid cells?
Answers
Fingers are made from diploid cells. All of the cells in our body are made from diploid cells except in the reproductive cells which are made from haploid cells.
Plants and fungi can both grow on the forest floor, but they are actually somewhat different. Which of the following is a difference between the
cells of plants and fungi?
a) presence of chlorophyll
b) presence of a nucleus
c) presence of DNA
d) presence of a cell wall
Answers
T/F : the feeding and growth portion of a protozoan's life cycle is known as the cyst stage.
Answers
The feeding and growth portion of a protozoan's life cycle is not known as the cyst stage. The cyst stage is a dormant and protective stage in the life cycle of certain protozoans. The statement is False.
It is characterized by the formation of a tough outer covering called a cyst, which allows the protozoan to survive harsh environmental conditions such as extreme temperatures, lack of moisture, or the presence of toxins.During the cyst stage, the protozoan is in a resting state and does not actively feed or grow. Instead, it remains in a dormant state until conditions become favorable for its reactivation.The cyst stage helps the protozoan to withstand unfavorable conditions and serves as a means of dispersal to new environments.
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1. List the producers in this food web.
2.List the primary consumers in this food web.
3. List three secondary consumers.
4. List three tertiary consumers.
5. List two quaternary consumers.
Answers
2. The primary consumers are the giraffe, rhino, bug, mouse, and deer.
3. Three secondary consumers are the bird, fox, and monkey.
4. Three tertiary consumers the skunk and whatever that thing is between the monkey and fox (the image is blurry).
5. Two quaternary consumers are the vulture and the monkey.
The evolution of animal species has been prolific (current estimates of species numbers reach into the tens of millions). Much of this diversity is a result of the evolution of novel ways to ________.
sense, feed, and move
Answers
The evolution of animal species has been prolific, resulting in great diversity among species. Much of this diversity is a result of the evolution of novel ways to sense, feed, and move.
By developing new ways to interact with their environments, species have been able to adapt and thrive in various habitats, contributing to the overall richness of life on Earth.
Sensing: One of the key drivers of animal diversity is the evolution of sensory organs that allow animals to detect and respond to their environment. Animals have evolved a wide range of senses, including sight, hearing, smell, touch, taste, and even electric and magnetic fields. These senses allow animals to locate food, avoid predators, find mates, and navigate through their environment.
Feeding: The evolution of new feeding strategies has also contributed to animal diversity. Animals have evolved a wide range of feeding behaviors, including filter-feeding, herbivory, predation, parasitism, and scavenging. The evolution of these feeding strategies has allowed animals to exploit different food sources and adapt to different environments.
Moving: The evolution of novel ways of moving has also played a key role in animal diversity. Animals have evolved a wide range of locomotion strategies, including swimming, crawling, jumping, flying, and gliding. The evolution of these locomotion strategies has allowed animals to escape predators, find food, and adapt to different environments.
In conclusion, the evolution of animal diversity is the result of the evolution of novel ways to sense, feed, and move. This has allowed animals to adapt to different ecological niches and exploit different resources, leading to the vast diversity of animal species we see today.
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what do yall look like
Answers
Answer:
FOOD
Explanation:
how many positive charges are in the nucleus of a carbon atom
Answers
Using one of Newton's Laws of Motion -- explain what happened.
Answers
Answer:
newtons law number two