Answers
Answer:
b
Explanation:
b
Related Questions
If you were given a single tiny chunk of a nucleic acid strand and asked if it was DNA or RNA, what things would you look for to tell?
Answers
Explanation:
whether or not there is a U in the strand.
Which of the following is the period from conception until birth?
- Cleavage
- Postnatal development
- Prenatal development
- Preconception development
Will Give Brainliest!!
Answers
Answer:
Prenatal development.
Explanation:
Prenatal development is the period from conception until birth.
which of the following statements are true regarding active transport and facilitated diffusion (choose two answers) a) Active transport utilizes channel proteins and facilitated diffusion utilizes carrier proteins b) Both processes require the use of membrane proteins c) Both processes require the input of energy (ATP) d) Active transport moves substances against the concentration gradient and facilitated diffusion moves substances along the concentration gradient
Answers
Answer: B and D
Explanation: We can break down why the correct answers are choices B and D by understanding why A and C are incorrect.
Option A states that active transport utilizes channel proteins, and facilitated diffusion utilizes carrier proteins. This is incorrect. Active transport involves carrier proteins, and facilitated diffusion involves channel proteins. Carrier proteins are different from channel proteins in that, while channel proteins can only facilitate the passive diffusion of ions into or out of the cell along their concentration gradient, carrier proteins can also use ATP to move ions in or out of the cell against their concentration gradient.
This brings us to why option C is also incorrect. Option C states that both processes require the input of energy in the form of ATP. While active transport requires the use of ATP to transport ions with or against their concentration gradient, facilitated diffusion does not. This is easily remembered when we consider that active transport is called *active* transport because the cell is *actively* using energy to transport ions.
Hope this helped.
Answer: Choice B
Active transport moves substances against the concentration gradient and facilitated diffusion moves substances along the concentration gradient.
Choice D
Both processes require the use of membrane proteins.
Explanation: B- Active transport is active because it requires ATP in order to go against the gradient and facilitated diffusion is a type of passive transport that goes with or along the gradient without the use of ATP.
D- Active transport utilizes carrier proteins on the cell membrane and facilitated diffusion can utilize either channel or carrier proteins on the cell membrane.
Hope this helped have a nice day. :D
what events in early development suggest that frogs are more closely related to sea stars than either group is related to snails or worms?
Answers
The events in early development suggest that frogs are more closely related to sea stars than either group is related to snails or worms are their similarities in gastrulation and cleavage patterns.
During early development, frogs and sea stars both undergo a process called gastrulation, where the embryo develops three distinct germ layers: the ectoderm, mesoderm, and endoderm. These germ layers give rise to different tissues and organs in the adult organism. In contrast, snails and worms undergo a different process of development, where they only develop two germ layers: the ectoderm and endoderm.
Additionally, both frogs and sea stars exhibit radial cleavage during early development, where the cells divide in a radial pattern around the axis of the embryo. Snails and worms, on the other hand, exhibit spiral cleavage, where the cells divide in a spiral pattern.
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sciencebiologybiology questions and answersin silkmoths (bombyx mori), red eyes (re) and white-banded wings (wb) are encoded by two mutant alleles that are recessive to those that produce wild-type traits (re+and wb+); these two genes are on the same chromosome. a moth homozygous for red eyes and white-banded wings is crossed with a moth homozygous for the wild-type traits. the f1 have normal eyes
Question: In Silkmoths (Bombyx Mori), Red Eyes (Re) And White-Banded Wings (Wb) Are Encoded By Two Mutant Alleles That Are Recessive To Those That Produce Wild-Type Traits (Re+And Wb+); These Two Genes Are On The Same Chromosome. A Moth Homozygous For Red Eyes And White-Banded Wings Is Crossed With A Moth Homozygous For The Wild-Type Traits. The F1 Have Normal Eyes
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In silkmoths (Bombyx mori), red eyes (re) and white-banded wings (wb) are encoded by two mutant alleles that are recessive to those that produce wild-type traits (re+and wb+); these two genes are on the same chromosome. A moth homozygous for red eyes and white-banded wings is crossed with a moth homozygous for the wild-type traits. The F1 have normal eyes and normal wings. The F1 are crossed with moths that have red eyes and white-banded wings in a testcross. The progeny of this testcross are
wild-type eyes, wild-type wings
418
red eyes, wild-type wings
19
wild-type eyes, white-banded wings
16
red eyes, white-banded wings
426
a. What phenotypic proportions would be expected if the genes for red eyes and for white-banded wings were located on different chromosomes?
b. What is the rate of recombination between the genes for red eyes and those for white-banded wings
Answers
The phenotypic proportions which would be expected if the genes for red eyes and for white-banded wings were located on different chromosomes are:
(a)
1⁄4 wild-type eyes, wild-type wings1⁄4 red eyes, wild-type wings1⁄4 wild-type eyes, white-banded wings1⁄4 red eyes, white-banded wingsWhat is the distance and rate of recombination?The distance between the genes is four map units.
The rate of recombination between the genes for red eyes and those for white-banded wings is 4%.
(b)
The F1 heterozygote inherited a chromosome with alleles for red eyes and white-banded wings (re wb) from one parent and a chromosome with alleles for wild-type eyes and wild-type wings (re+ wb+) from the other parent. These are therefore the phenotypes of the nonrecombinant progeny, present in the highest numbers. The recombinants are the 19 with red eyes, wild-type wings and 16 with wild-type eyes, and white-banded wings.
RF = recombinants/total progeny × 100% = (19 + 16)/879 × 100% = 4.0%
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what is synaptic integration? what is synaptic integration? adding together all ipsps generated by a single neuron adding together all epsps generated by a single neuron a process by which multiple synaptic potentials combine within one postsynaptic neuron a method of comparing the amplitudes of miniature postsynaptic potentials
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Synaptic integration is the process by which multiple synaptic potentials combine within one postsynaptic neuron. It is a mechanism through which neural information is processed and transmitted.
In the process of synaptic integration, the postsynaptic neuron receives inputs from multiple presynaptic neurons. These inputs are in the form of excitatory postsynaptic potentials (EPSPs) and inhibitory postsynaptic potentials (IPSPs). EPSPs are positive potentials that tend to depolarize the postsynaptic neuron, while IPSPs are negative potentials that tend to hyperpolarize it.
The postsynaptic neuron then combines these inputs, by adding together all EPSPs and IPSPs generated by different presynaptic neurons. The resulting synaptic potentials are then used to determine whether the postsynaptic neuron will fire an action potential or not. Synaptic integration is an essential process in the neural communication and it helps to transmit the complex information between neurons.
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Name the two major types of cell transport
Answers
There are two major types of cell transport: passive transport and active transport. Passive transport requires no energy. It occurs when substances move from areas of higher to lower concentration. Types of passive transport include simple diffusion, osmosis, and facilitated diffusion.
in the 1960's mitochondria dna was discovered with the use of an electron microscope. the presence of mitochondrial dna in eukaryotic cells suggest what about the origin of life on earth
a. eukaryotic cells functions without dna
b. the dna molecule existed before mitochondria
c. mitochondria may have been free-living cells (endosymbiotic theory)
d. that life originated from mitochondrial dna
Answers
The presence of mitochondrial DNA in the eukaryotic cell indicates that (c) mitochondria may have been free-living cells (endosymbiotic theory).
Eukaryotic cell is the advanced type of cell with well-defined nucleus. The cell contains several cell organelles like mitochondria, lysosomes, chloroplast, and many other for its survival. The ribosome type present in the eukaryotic cell is the 80S type.
Mitochondria is the double membranous cell organelle of the eukaryotic cells that has its own DNA molecule. The inner membrane of the mitochondria is folded into several finger-like projections called cristae. The process of cellular respiration occurs in the mitochondrial membrane.
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Question 2 of 15
blank is stored in a fossil fuel, and released in the form of kinetic energy when
burned.
Answers
Chemical energy is stored in a fossil fuel and released in the form of kinetic energy when burned.
Fossil fuels, such as coal, oil, and natural gas, are derived from the remains of ancient plants and organisms that were subjected to high pressure and heat over millions of years.
These fuels contain energy-rich hydrocarbon compounds, primarily made up of carbon and hydrogen atoms. When fossil fuels are burned, the combustion process breaks down these hydrocarbons, releasing stored chemical energy.
This energy is then converted into heat and kinetic energy, resulting in the production of heat, light, and mechanical energy, which can be harnessed for various purposes, such as generating electricity or powering vehicles.
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according to the "generational accounting" method of analyzing generational equity, the lifetime tax rate of baby boomers is about one-third higher than that of their parents.
Answers
The statement you provided about the lifetime tax rate of baby boomers being approximately one-third higher than that of their parents based on the "generational accounting" method of analyzing generational equity is not accurate. Generational accounting is a method used to assess the fiscal impact and intergenerational equity of government policies over time, particularly in terms of taxes and social benefits.
The analysis of generational accounting takes into account factors such as government expenditures, tax revenues, and demographic trends to estimate the fiscal burden or benefit faced by different generations. However, the specific comparison you mentioned regarding the tax rates of baby boomers and their parents is not supported by a universally applicable finding or consensus.
The tax rates experienced by individuals can vary significantly depending on various factors, including personal income, tax policies, and changes in the economic landscape over time. It's important to note that tax rates can differ across countries and can be influenced by specific historical and socioeconomic factors.
Therefore, while generational accounting can provide insights into the intergenerational impact of fiscal policies, it would require more comprehensive analysis and specific data to make accurate claims about the lifetime tax rates of baby boomers compared to their parents.
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If the moon orbits Earth every 28 days, why is there not an eclipse every month?
Answers
Answer:
The Moon's path around earth is tilted compared to Earth's orbit around the Sun. The Moon can be behind Earth but still get hit by light from the sun. This is why we dont get a lunar eclipse every month.
Explanation:
Can someone please help me for questions 2
Answers
At The End Of June, Gabin Dental Had Performed $5,000 Of Dental Services But Has Not Yet Billed Customers. Record The Adjusting Entry For Accrued Revenue. (Record Debits First, Then Credits. Select The Explanation On The Last Line Of The Journal Entry Table.) Date Accounts And Explanation Debit Credit June 30
Answers
Date Accounts And Explanation Debit Credit June 30 Accounts Receivable 5,000 Service Revenue 5,000. Explanation: To record accrued revenue of $5,000 for dental services performed but not yet billed to customers at the end of June.
Customers are individuals or entities that purchase goods or services from a business. In a commercial context, customers are essential to the success of a company as they generate revenue by making purchases. Building and maintaining a satisfied customer base is crucial for businesses to thrive. Customer satisfaction is often achieved through providing quality products or services, addressing their needs and preferences, delivering excellent customer service, and establishing positive relationships. Customer loyalty and positive word-of-mouth recommendations from satisfied customers can contribute to the growth and profitability of a business.
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Why was it difficult for Dalton to prove his theory?
Answers
Answer:
Because atoms could not be seen, Dalton could not base his theory on direct observation, and this was a major stumbling block for many scientists. ... It was easier to express stoichiometric proportions in terms of atoms than in terms of absolute mass.
Explanation:
Which cellular structures would you find in plant cell but not in an animal cell?
Answers
Answer: cell wall and lysosomes
Explanation:
rejection of a newly transplanted organ is caused by
Answers
This is because the person's immune system detects that the antigens on the organ's cells are not "matched." Mismatched or insufficiently matched organs can cause a blood transfusion reaction or transplant rejection.
Acute rejection occurs when your body's immune system attacks the new organ as if it were a foreign object. We treat this by using medication to suppress your immune system's response. Chronic rejection can be a long-term issue.
Rejection can be difficult to treat due to complex conditions. The primary cause of transplant rejection is a cell-mediated immune response to HLA antigens expressed on donor antigen-presenting cells (APCs) transferred with the transplanted organ.
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Using the words endoderm, ectoderm, and mesoderm, explain the difference between diploblasts and triploblasts. Give examples of each.
Answers
the outermost of the three primary germ layers of an embryo that is the source of various tissues and structures (such as the epidermis, the nervous system, and the eyes and ears) b : a tissue (such as neural tissue) derived from this germ layer.
The mesoderm is a germ layer that arises during gastrulation, and is present between the ectoderm, which will turn into skin and central nervous system cells, and the endoderm, which will produce the gut and the lungs.
The key difference between diploblastic and triploblastic animals is that diploblastic animals produce two germ layers excluding mesoderm and triploblastic animals produce all three germ layers.
Diploblastic: Diploblastic animals are not complex. Triploblastic: Triploblastic animals are much complex than diploblastic animals. Diploblastic: Jellyfish, comb jellies, corals and sea anemones are examples. Triploblastic: Molluscs, worms, arthropods, echinodermata and vertebrates are examples.
Antidiuretic hormone (ADH) is important in maintaining homeostasis in mammals.
a. True
b. False
Answers
Answer:
true
Explanation:
what role do independent and dependent varibles play in controlled experiment
Answers
A fish farmer has a large pool used to grow a species of fish. The farmer decides to add a second species of fish to the pool. Both fish species feed on the same type of food, but the fish farmer does not increase the amount of food added to the pool, maintaining the same carrying capacity in the pool.
Which graph shows how the population of the two fish species will change?
Answers
Answer:
D
Explanation:
Explanation: The capacity of fish to the ratio of population change increased and showed a variable degree of measurements.
A species of ancestral short-legged shorebirds exists. Within the population of birds living on a specific shoreline, there is a range of leg lengths. Some birds have legs that are a little bit shorter than average, while some birds have legs that are a little bit longer than the average leg length. Leg length is an inherited trait. Increased annual temperatures resulted in shallow shoreline waters and restricted food supplies. Competition for food among the birds increased. The birds with slightly longer legs could wade out into deeper water to find food. The longer-legged birds lived longer, were healthier, and therefore more had chicks each year. The birds with the shortest legs did not survive.
After several generations, the shoreline waters have remained shallow. What prediction would you make about the bird population in the area?
Responses
A Within the population, the range of leg length has remained constant over time.
B The increase in long-legged birds led to increased competition and the number of birds dropped dramatically.
C Within the population, the average leg length has increased over time.
Within the population, the average leg length has increased over time.
D According to Darwin, variation exists so we would expect a variety of leg lengths in the population.
Answers
Due to the selection pressure favoring longer-legged birds, their increased survival and reproductive success would lead to a higher proportion of individuals with longer legs in the population, resulting in an increase in the average leg length over several generations. So, option C is the right choice.
The scenario describes a situation where increased annual temperatures have resulted in shallow shoreline waters and restricted food supplies, leading to increased competition among the birds. In this context, the birds with slightly longer legs have a survival advantage as they can access deeper water to find food. These longer-legged birds live longer, are healthier, and have more offspring each year, while the birds with shorter legs struggle to survive and reproduce.
Over several generations, this selective pressure favoring longer legs would result in a higher proportion of individuals with longer legs in the population. As longer-legged birds are more successful in terms of survival and reproduction, their genes for longer legs would be passed on to future generations at a higher rate. Consequently, the average leg length of the bird population would increase over time as the genetic trait for longer legs becomes more prevalent.
Therefore, the prediction would be that within the population, the average leg length has increased over time.
The right answer is option C. Within the population, the average leg length has increased over time.Within the population, the average leg length has increased over time.
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What process do yeasts carry out to obtain energy when they are in nutrient mixture such as bread dough?
Answers
Yeasts are single-celled microorganisms that play an important role in the process of fermentation, which is used to produce a variety of foods and beverages, including bread.
In bread dough, yeasts carry out a process known as anaerobic respiration, which enables them to obtain energy from the nutrients in the mixture without the need for oxygen.
During anaerobic respiration, yeasts break down the carbohydrates in the dough, such as glucose and fructose, into simpler compounds such as ethanol and carbon dioxide. This process releases energy in the form of ATP, which the yeasts use to carry out their metabolic processes and to maintain their cellular functions.
As the yeasts consume the sugars in the bread dough, they produce carbon dioxide gas, which causes the dough to rise and gives bread its characteristic texture. The ethanol produced during fermentation also adds flavor and aroma to the bread.
Overall, yeasts play a crucial role in the production of bread, as they provide the energy needed to carry out the fermentation process and create the delicious, fluffy loaf we all know and love.
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7. A hen's egg with the shell dissolved is placed in a 10% salt solution. Relative
to the interior of the egg the salt solution is
A. Hypotonic
B. Isotonic
C. Hypertonic
D. Semi-permeable
Answers
The salt solution is Hypertonic.
Hypertonic fluids contain a higher concentration of solute compared to plasma and interstitial fluid.What is hypertonic solution?A solution that contains more dissolved particles than is found in normal cells and blood.Cells placed in hypertonic solution will shrink. Water moves from a high water concentration inside the cell to a low water concentration outside of the cell by osmosis.What is osmosis?Osmosis is the movement of water molecules from a solution with a high concentration of water molecules to a solution with a lower concentration of water molecules, through a cell's partially permeable membrane.Osmosis is a passive transport process during which water moves from areas where solutes are less concentrated to areas where they are more concentrated.To know more about osmosis here
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Which energy transformation occurs when the archer releases the string?
OA. Elastic energy is transformed into electrical energy.
OB. Chemical energy is transformed into elastic energy.
OC. Elastic energy is transformed into kinetic energy.
D. Potential energy is transformed into elastic energy.
Answers
Answer:
OA. Elastic energy is transformed into electrical energy.
Explanation:
pls hart and mark brainiest
safety laboratory rules
Answers
Answer:
please mark me brainliest
Explanation:
Know locations of laboratory safety showers, eyewashstations, and fire extinguishers. ...
Know emergency exit routes.
Avoid skin and eye contact with all chemicals.
Minimize all chemical exposures.
No horseplay will be tolerated.
Assume that all chemicals of unknown toxicity are highly toxic.
Answer:
Rule #1 - WALK
Rule #2 - PROPER LAB ATTIRE
Rule #3 - HANDLING CHEMICALS
Rule #4 - HANDLING EQUIPMENT
Rule #5 - BROKEN GLASS
Rule #6 - EYE WASH/SHOWER
Rule #7 - FIRE SAFETY
Rule #8 - EATING/DRINKING IN LAB
Rule #9 - CLEANING UP
Rule #10 - HAND WASHING
Explanation:
_____ is a hormone associated in boys with genital development, increased height, and a deepening of the voice
Answers
Answer:
testosterone is the hormone associated with male puberty.
Which of the following is a function of a poly-A tail in mRNA? Select one: A. It indicates the site of translational termination. B. It helps protect the mRNA from degradation by hydrolytic equymes. C. It is a sequence that codes for the binding of RNA polymerase to the DNA. D. It adds the modified guanine to the 3' end of the mRNA.
Answers
The correct option B. It helps protect the mRNA from degradation by hydrolytic enzymes.
The poly-A tail is a sequence of adenine nucleotides added to the 3' end of the mRNA during post-transcriptional modification. Its primary function is to protect the mRNA molecule from degradation by hydrolytic enzymes present in the cytoplasm.
The poly-A tail increases the stability of the mRNA, allowing it to persist for a longer duration and increase the chances of successful translation. Additionally, the poly-A tail plays a role in mRNA export from the nucleus to the cytoplasm and aids in the initiation of translation by facilitating the binding of certain initiation factors.
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Please write the correct answer and measure the bat please
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For the sake of god, PLEASE SOMEONE HELP ME.
Answers
From the Diagram attached below
A) The time it will take for the moon to move from point Y back to point Y is : 27 days
B) The point which is known as Apogee is : Point V
C) Point X is called : Perigee
D) The time it takes for the moon to rotate around its axis is : Approximately 27 days
The moon's orbit around the earthPoint V in the diagram is known as Apogee this is also known as the point in the orbit where the new moon is present, while point X ( perigee ) is the point in the orbit where the earth experiences a full moon.
The time taken for the moon to make one complete revolution on its orbit around the earth is the same time it takes to rotate around its axis which is 27 days.
Hence we can conclude that the answers to your questions are as listed above.
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Why is the sky blue according to Science.
Answers
Answer: The sky is blue due to a phenomenon called Raleigh scattering.
Explanation:
Answer: Raleigh scattering is the scattering of electromagnetic radiation by particles with smaller wavelengths. Shorter wavelenght waves are blue-hue.
Explanation: