Which of the following best describes the components of the DNA twisted ladder?
A. The sides are made of alternating polypeptide chains, and the rungs are made of amino acid segments joined by
hydrogen bonds
B. The sides are made of alternating amino acids, and the rungs are made of polypeptide chains joined by hydrogen bonds.
C. The sides are made of alternating phosphate-sugar groups, and the rungs are made of complementary nitrogenous
bases joined by hydrogen bonds
D.The sides are made of alternating nitrogenous bases, and the rungs are made of phosphate-sugar groups joined by hydrogen bonds
The sides are made of alternating phosphate-sugar groups, and the rungs
are made of complementary nitrogenous bases joined by hydrogen bonds
DNA which is also called Deoxyribonucleic acid contains genetic information
which are passed from the parent to offspring. DNA is made up of an
alternating phosphate-sugar group in which the sugar is deoxyribose.
The alternating phosphate-sugar group are located at the side of the ladder.
The rungs are made up of complementary nitrogenous bases joined by
hydrogen bonds. Example of nitrogenous bases include adenine, thymine,
guanine and cytosine.
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Lake Victoria, shown in the population map above, is the largest lake in Africa
and is home to fish called cichlids (pronounced SIK-lids). In the 1950s, a new
fish, the Nile Perch, was introduced into Lake Victoria. This map shows the
change in the cichlid population since the Nile Perch was introduced.
Use the map above to answer the questions below.
1. Using a Key In which year was the number of cichlids the greatest?
2. Using a Key How many years did it take for the cichlid population to decrease
by 50 percent?
3. Inferring Relationships Which fish in Lake Victoria do you think is higher on
the food chain
the cichlid or the Nile Perch? Explain your answer.
4. Identifying Trends Based on the rate of decrease of cichlids shown on the map,
what do you think will happen to the cichlid population by 2050? Explain your
answer.
Match each part of the lymphatic system with the correct label.
Answer:
1 Cervical Lymph Nodes
2 Right Lymphatic Duct
3 Axillary Lymph Nodes
4 Thoracic Duct
5 Cisterna Chyli
6 Peyer's Patches
7 Inguinal Lymph Nodes
Explanation: are correct
Answer:
1 Cervical Lymph Nodes
2 Right Lymphatic Duct
3 Axillary Lymph Nodes
4 Thoracic Duct
5 Cisterna Chyli
6 Peyer's Patches
7 Inguinal Lymph Nodes
Explanation:
A _____ occurs when a cold air mass moves over a warm air mass.
front
hot front
warm front
cold front
ILL MARK YOU BRAINLIEST
Answer:
Cold front
Explanation:
-
After the head is struck, the brain continues to move in the fluid and may be contused on the other side; this type of injury is called:
Answer:
contrecoupDefinition:
a contusion caused by the brain colliding with the skull on the side opposite the point of impact.HELP HELP HELP I REALLY NEED THIS
Answer:
d
Explanation:
i think since more step
what is the difference between camouflage and mimicry
Answer:
Camouflage would be a process of an individual or creature disguising themself with their surroundings or environment. It can be used to disguise their identity, presence, and movement. While mimicry is the act of copying or mimicking other individuals. When referring to animals though, it is the evolved resemblance of another creature and can be used for the protection of one-self. The Viceroy and Monarch butterfly is a good example of mimicry since the monarch butterfly is poisonous and the viceroy is harmless. Because of this, many creatures know not to eat monarch butterflies and would be cautious around the viceroy as well, because of the striking resemblance between the two. Hope this could help!
Explanation:
What is it called when water moves through pores in soil?
Answer:
percolation,
Explanation:
Movement of water into soil is called infiltration, and the downward movement of water within the soil is called percolation, permeability or hydraulic conductivity. ... Pore space. Spaces in soil, between the mineral and organic matter, that are filled with water or air.
differentiate between middle and inner part of ear
Answer:
middle= This is the part through which sound travel inside the ear to the eardrum through the auditory canal . sound causes the eardrum nad it's tiny attached bones in the middle portion of the vibration and conducted to the nearby cochlea
inner part= the cochlea is the part of the inner ear . its main function is to transform sound into nerve impulses......
What are two ways in which the geosphere is interacting with the hydrosphere in this river?
erosion and weathering
_____________________
o0o0o0o0o0o0o0o0o0o0o0
What are potential solutions for the spike in human population
O educating women
O family planning (birth control)
O working women (contribute to the household income
O all the above
Please help!! What are Okazaki fragments?
Explanation:
Okazaki fragments are short sequences of DNA nucleotides (approximately 150 to 200 base pairs long in eukaryotes) which are synthesized discontinuously and later linked together by the enzyme DNA ligase to create the lagging strand during DNA replication.[1] They were discovered in the 1960s by the Japanese molecular biologists Reiji and Tsuneko Okazaki, along with the help of some of their colleagues
During DNA replication, the double helix is unwound and the complementary strands are separated by the enzyme DNA helicase, creating what is known as the DNA replication fork. Following this fork, DNA primase and DNA polymerase begin to act in order to create a new complementary strand. Because these enzymes can only work in the 5’ to 3’ direction, the two unwound template strands are replicated in different ways.[2] One strand, the leading strand, undergoes a continuous replication process since its template strand has 3’ to 5’ directionality, allowing the polymerase assembling the leading strand to follow the replication fork without interruption. The lagging strand, however, cannot be created in a continuous fashion because its template strand has 5’ to 3’ directionality, which means the polymerase must work backwards from the replication fork. This causes periodic breaks in the process of creating the lagging strand. The primase and polymerase move in the opposite direction of the fork, so the enzymes must repeatedly stop and start again while the DNA helicase breaks the strands apart. Once the fragments are made, DNA ligase connects them into a single, continuous strand.[3] The entire replication process is considered "semi-discontinuous" since one of the new strands is formed continuously and the other is not.[4]
[2]During the 1960s, Reiji and Tsuneko Okazaki conducted experiments involving DNA replication in the bacterium Escherichia coli. Before this time, it was commonly thought that replication was a continuous process for both strands, but the discoveries involving E. coli led to a new model of replication. The scientists found there was a discontinuous replication process by pulse-labeling DNA and observing changes that pointed to non-contiguous replication.
Answer:
but actually hope is going to read all of this
Explanation:
lol
The concentrations of sodium and potassium ions are very different inside and outside a neuron. What contributes to these differences
Answer:
The sodium potassium pump. The resting potential of the neuron is -70mV due to the fact that more sodium ions are inside the cell than potassium ions. The resting potential is a result of different concentrations inside and outside the neuron.
That's all that I remember hope it helps
Please explain, why do we age?
Answer:
According to this theory, aging occurs through small and random damaging events in a cell that add up over time. These damaging events may come from our own metabolism, as the basic mechanism of metabolism sometimes causes damage to molecules within our cells.
Answer:
according to this theory, aging is caused by changes in hormones.
Explanation:
hormones are which are produced by the endocrine system.
Mountain chains in northern Europe and West Africa match the Appalachian Mountains in terms of their ages and the sequences of rock layers that make them up. in 3-5 sentences analyze these observations and explain what conclusions can be drawn from them.
According to the statement, it can be concluded that the three mountains were formed around the same geological era. Additionally, they have similar layers due to the sedimentation and metamorphization processes.
Since its emergence, the Earth has experienced different physical and chemical phenomena that have influenced changes in it. In the case of the lithosphere and the Earth's crust, they have been influenced by phenomena such as
Volcanism The rock cycle The wind The rainfall Among other
Additionally, geologists have developed methods of studying the crust to know the age and composition of the layers of the Earth's crust. According to this, it can be established that these three layers are of the same age because their composition of layers is studied and the materials and distribution of the layers match, that is, they were formed at the same time.
This coincidence in distribution is explained through the processes of sedimentation of materials and their metamorphization.
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Yong is a massage therapist. Which field of science would Yong most likely need to know the most about in order to do his job? A. Life science B. Space science OC. Earth science O D. Physical science
Answer:
D) physical science
Explanation:
physical science is the only science that would benefit his work as a massage therapist
Answer:
D)
Explanation:
Yong would have to know physical science because your messaging the human body which is physically speaking is touch.
hope that help you
This image shows a volcanic eruption in Hawaii with lava flowing into the sea.
Which statement best describes this eruption?
Its magma is high in silica.
Its magma has low viscosity.
Its gases are released in rapid bursts.
Its lava came from an explosive eruption.
The last one is right answer i think
at what time should we definitely seek shade to avoid sun exposure? between 6am and 8am between 8am and 10am between 10am and 4pm between 4pm and 10pm
SCIENCE. PLEASE HELP!!!!
Answer:
Between 10am and 4pm
Explanation:
This is when the sun is at its higest point, allowing it to radiate more UV rays on your skin.
Answer:
during the time btw 10 am to 4 pm because sun is scorching at that time so you should seek shade btw this time
What type of growth is shown in the graph?
A) Exponential growth
B) logistic growth
C) carrying capacity
D) growth rate
Answer:
A
Explanation:
Cause I know the soul never dies
I make the chrome-chrome fly
I'm a wave, Roll Tide
Bullets at your face, bow tie
My persona done got her tongue tied
I was taught that a legend never dies
When it's time gotta let the lead fly
'Cause I'm a war-war-war baby
Post-traumatic stress I know the war changed me
Had to bend back but they could never break me
Had to slide
We was hoppin' out in broad day
Serving fiends in the hallway
Promethazine 'til the morningggg
which french cheese was called the king of the cheeses?
Roquefort is the king of cheese.
Ignore the clicked answer, i accidentally clicked it and can't undo it. ;D
Graph the following data tables
Answer/Explanation:
When plotting, mark the values as [tex]x[/tex] and [tex]y[/tex] values. Then go to the x-axis on the graph and plot the point x-axis point on the graph. Plot the [tex]y[/tex] point on the y-axis for the first [tex]y[/tex] point. Do the same for each point.
[tex]x\:\:\:\:\:\:\:y[/tex]
[tex]10\:\:\:\:1.9[/tex]
[tex]20\:\:\:\:3.8[/tex]
[tex]30\:\:\:5.75[/tex]
[tex]40\:\:\:\:7.7[/tex]
[tex]50\:\:\:\:9.6[/tex]
If completed correctly, it should appear like this:
what would be a possible disadvantage of asexual reproduction?
Answer:
Susceptible to same diseases.
Explanation:
I just answered something along these lines.
Mountain chains in northern Europe and West Africa match the Appalachian Mountains in terms of their ages and the sequences of rock layers that make them up. in 3-5 sentences analyze these observations and explain what conclusions can be drawn from them.
The above observation shows that the mountain chains in Northern Europe and West Africa are part of the Appalachian Mountains as a result of the same age, matching of rocks, etc
A mountain chain simply means a row of high mountain summits or a contiguous ridge of mountains within a larger mountain range.
The theory of plate tectonics establishes a co-relation with these mountain chains by understanding their movements. It was shown that Europe and Africa were part of the same landmass in the past. Due to the gradual movement of plates, both continents move apart.
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name three different releasers that can trigger a behavior
Reflex, taxis and kinesis are the different releasers that can trigger a behavior.
What is Behavior?Behavior is defined as the range of actions and behaviors performed by individuals, organisms, systems or artificial entities in some environment, whose systems may include other systems or organisms as well as inanimate physical environments.
These play important roles in survival, long-term and short-term health, and emotional and physical well-being. While some behaviors are innate, and others are conscious choices. Behavior is the result of a complex interaction between genetics and environment, and includes emotional and physical actions and reactions.
The simplest example of an innate behavior which is a reflex action: an involuntary and rapid response to a stimulus, or cue.
Thus, reflex, taxis and kinesis are the different releasers that can trigger a behavior.
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#SPJ2
Volume-
1. A is greater than b
2. Less than b
3. Same than b
And the reason:))
Please no links I just want to go to bed
Answer:
A is greater than b,,,,,
Answer:
A is the answer to your question
Explanation:
because it has more atoms
Classify the following as a phenotype or a genotype: a Aa- Brown eyes- TT- Blonde hair-
Answer:
Phenotype: Brown Eyes, blond hair.
Genotype: a Aa, TT
Explanation:
Phenotypes are visible traits.
Genotypes are non-visible.
At the end of metaphase where is the dna located in the cell:
Answer: At the end of interphase comes the mitotic phase, which is made up of mitosis and cytokinesis and leads to the formation of two daughter cells.
Explanation:
This is when the cell grows and copies its DNA before moving into mitosis. During mitosis, chromosomes will align, separate, and move into new daughter cells. ... At the end of interphase comes the mitotic phase, which is made up of mitosis and cytokinesis and leads to the formation of two daughter cells.
Scientist put a sample of water into a sealed tank. water can be a solid, liquid, or a gas. At first the water was a liquid . Then, the scientists transferred energy out of the substance, and was we changed phase. What after the phase change, the water molecules moved…
ANSWERS
A. Faster and started moving away from each other
B. Faster and started moving around each other
C. Slower and started moving in place
D. Slower and started moving around each other
Answer: C. Slower and started moving in place
Explanation:
am very good at science
how the CO₂ in the atmosphere is changed as a result of the wildfires?
Answer:
Forests capture carbon from the atmosphere in the trees and soils. ... When forests burn, vast amounts of the stored carbon is emitted.
Hope that helped. x