Which step happens first in DNA replication?
Answers
Answer:
Initiation
Explanation:
The initiation of DNA replication occurs in two steps. First, a so-called initiator protein unwinds a short stretch of the DNA double helix. Then, a protein known as helicase attaches to and breaks apart the hydrogen bonds between the bases on the DNA strands, thereby pulling apart the two strands. As the helicase moves along the DNA molecule, it continues breaking these hydrogen bonds and separating the two polynucleotide chains (Figure 1).
Related Questions
Incomplete Dominance
I need help
Answers
Answer:
1.
Red = rr
Blue = bb
Purple = rb
2.
a) Genotype - rb
Phenotype - purple
b) 0%
c) 100%
d) 0%
3.
a) Genotypes - rr, rb, bb
Phenotypes - red, purple, blue
b) 25%
c) 50%
d) 25%
4.
a) Genotypes - rb, bb
Phenotypes: purple, blue
b)
50 purple
50 blue
0 red
The trilobite fossil represents one of the earliest life forms on the earth and is
now extinct. However, the fossil looks very similar to organisms that you might
see today in an aquatic environment. Describe how fossils can show relationships
between extinct and living creatures.
Answers
MY BACK HURTS SO MUCH!!!!!!!! PLEASE HELP ASAP!!!!
Answers
Answer:
Atmosphere
Explanation:
ok, go to the doctor and get some pain meds
where can warm water be found
Answers
Answer:
Warm water can be found near the equator because it is a warm tropical environment and near volcanoes.
Explanation:
hope that helped :)
How does carbon dioxide affect sea urchins
Answers
Answer:
Increasing levels of carbon dioxide (CO2) in the atmosphere are causing oceans to become more acidic. This situation poses a threat to marine organisms with shells made of calcium carbonate, because acid will corrode these shells
Answer:
Explanation:
Increasing levels of carbon dioxide (CO2) in the atmosphere are causing oceans to become more acidic. This situation poses a threat to marine organisms with shells made of calcium carbonate, because acid will corrode these shells.
anyone know this ?
Answers
What is the relationship between force, mass, and motion?
Answers
Answer: If an object is accelerating, then Force = Mass x Acceleration. If it is moving at a constant speed, then Kinetic Energy = 1/2 mass x velocity squared but in this case, there is no force acting on the object. Perhaps this will help understand the relationship between force and mass. Force is anything that acts on an object, from a person pushing on something to gravity holding the Earth in orbit around the Sun, to cause it to change speed or direction. If there is no change in speed or direction, then no force is acting on it. This relates to mass in the following way. THE GREATER THE MASS, THE GREATER THE FORCE NEEDED TO MAKE THAT MASS CHANGE SPEED OR DIRECTION. Think of it like this; what takes more force to push up a hill, a car, or a bicycle. The bicycle has less mass and therefore requires less force to push it.
Force = Mass x Acceleration if an object is accelerating.
What is Motion?Kinetic Energy = 1/2 mass x velocity squared if it is moving at a constant pace, yet there is no force acting on the item in this scenario.
This will make the connection between force and mass more clear. Any action that exerts force on an object—from a person pushing something to gravity keeping the Earth in its orbit around the Sun—to change its speed or direction is referred to as force.
No force is acting on something if there is no change in its direction or speed. The following is how this relates to mass. The force required to cause a mass to change speed or direction increases with mass.
Therefore, Force = Mass x Acceleration if an object is accelerating.
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What evidence did
Thomson's experiments provide?
Answers
Answer:
Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. Thomson proposed the plum pudding model of the atom, which had negatively-charged electrons embedded within a positively-charged "soup."
Which cell molecules will be used to make viral proteins
Answers
Can some viruses be prevented? (Explain your answer). Which viruses from your data table are preventable?
Answers
Answer:
Lung cancer from smoking
what errors that could take place if a cell in m phase and g phase combine
Answers
Answer:
Explanation:
If a cell in the S phase come together and joined with a cell in the G1 phase, the nucleus of the G1 phase will suddenly jumped into S phase and this will result in the synthesis of DNA . If a cell then in the M phase joined with a cell in G1 phase, the nucleus of G1 will undergo mitosis and this will lead to the formation of a spindle and chromatin condensation even when duplication of chromosomes has not occur.
(GIVING BRAINLIEST!!!!)
Which weather state is most likely to cause an increase in precipitation?
A) Winds blowing from the south
B) An air temperature of 15 °C
C) High humidity
D) High air pressure
Answers
Answer: C
Explanation:
Answer:
HIGH HUMIDITY (High humidity)
Explanation:
Humidity is the amount of moisture in the air and when it forms clouds and falls it's called precipitation.
HELP DUE in 10 MINS! The Calvin Cycle takes place in which area?
A
B
C
Answers
How can ultrasound check for cracks in metal?
Answers
Answer:
The newly developed SONOSCAN angle probes of SONOTEC for non-destructive material testing check metals for cracks and inclusions. They are mainly used in the metal industry. The ultrasonic probes are able to detect critical defects as well as quality deficiencies of welds.
Explanation:
hope it helps please mark me as a brainliest please m
Answer:Computers are able to create detailed images by combining many ultrasound reflection readings
Explanation:
PLS HELP‼️
I need help deciding the “Kingdom of Life” for each organism!
Answers
Answer:11-f i believe because its a type of pond im sorry if im wrong
12- fungi
Explanation:
An object's______ will remain constant throughout the universe, but it's_____ can change from planet to planet. If you increase the mass of a planet, what happens to its gravity?_______if the gravity on a planet decreases, what happens to the weight of an object on that planet?_____
Answers
Answer:
An object's mass will remain constant throughout the universe, but it's weight can change from planet to planet. If you increase the mass of a planet, what happens to its gravity? Strength of Gravity increases. If the gravity on a planet decreases, what happens to the weight of an object on that planet? Weight Decreases
Explanation:
A volcanic eruption destroyed a forest, covering the soil with volcanic ash. For many years, only small plants could grow. Slowly, soil formed in which shrubs and trees could grow. These changes are an example of Select one:
a. equilibrium
b. evolution of a species
c. manipulation of genetics d. ecological succession
Answers
Answer:
d. ecological succession
Explanation:
Ecology Succession may be initiated either by formation of new, unoccupied habitat, such as from a lava flow or a severe landslide, or by some form of disturbance of a community, such as from a fire, severe windthrow, or logging.
Reference:
Wikipedia contributors. "Ecological succession." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, 10 Mar. 2021. Web. 23 Mar. 2021.
30 POINTS PLEASE HURRY!!! Which of the following conditions affect the lower respiratory system? check all that apply.
pneumonia
sinusitis
emphysema
common cold
tuberculosis
Answers
Answer:
A,C and E.
Next one is C- Gradual destruction of alveoli.
Explanation:
Edge 2021
Answer:
a c and e
Explanation:
The energy found in the sugar started from the light energy and it was transformed to chemical energy. This statement shows the Law of what??
a.Conservation of energy or Thermodynamics
b.Centrifugal Force
c.Relativity
d.Perpetual motion
Answers
What specific type of symmetry does a sea star have?
Answers
Answer:
radial symmetry
Starfish have radial symmetry with each arm portion of the starfish identical to each of the other regions
Explanation:
mark brainliest please
Answer:
A typical Star fish has five side of symmetry with no clear head the star fish can move in any directions and it is led by anyone of its five arms . Starfish has a radial symmetry .
I guess this might help u out
How will the increase in the tuna population affect the other populations? Be sure to explain whether the dolphin population, the squid population, and the herring population will change, and why.
Answers
Complete question:
Scientists have been studying four populations in one area of the Atlantic Ocean. In this area, both tuna and dolphins eat squid, and squid eat herring (a type of fish).
The data shows that recently the tuna population increased. How will the increase in the tuna population affect the other populations? Be sure to explain whether the dolphin population, the squid population, and the herring population will change, and why.
You will find the image in the attached files.
Answer:
Tunas´ population increasesSquids´ population decreases because more tuna eat themDolphins´ population decreases because there are fewer squids availableHerrings´ population increases because they do not suffer predation by squids.Explanation:
In the trophic web occurs a process of energy transference through different organisms placed at different levels. Each level feeds on the preceding one and becomes food for the next one. The first link is an autotroph organism or producer. The following links are the consumers: herbivores are primary consumers and feed on producers. Carnivores are secondary consumers and feed on herbivores, and so on. The last links are the decomposers, microorganisms that act on dead animals degrading organic matter.
If any of the links change their population size (increasing it or decreasing it), it affects the superior links and the immediately anterior link.
In the exposed example of the trophic web, tuna feeds on squids. If the tuna population increases in size, there will be more individuals feeding on squids. Squids will be affected because too many animals are eating them, and they will not have enough time to reproduce and recover the normal population size. The mortality rate by predation is higher than the natality rate, meaning that the squid population will decrease.
Dolphins also feed on squids. But as the tuna population increases in size, competition for squid prey will be higher. Both species (tuna and dolphins) will compete for food. But tuna will eat more squids, and hence, dolphins will be affected and decrease in population size.
Usually, herrings are eaten by squids. But as the squids' population decreases, herrings will not suffer from predation, and their population will increase in size.
So, to sum up:
Tunas´ population increasesSquids´ population decreases because more tuna eat themDolphins´ population decreases because there are fewer squids availableHerrings´ population increases because they do not suffer predation by squids.
I WILL GIVE BRAINLIEST. <33 PLEASE HELP
The nervous system is one system among several in the human body. In order to function, does the nervous system depend on other systems such as the muscular system or the respiratory system? Conversely, do these systems depend on the nervous system? Explain your reasoning for each answer.
Answers
Answer:
The nervous system takes in information through our senses, processes the information and triggers reactions, such as making your muscles move or causing you to feel pain. For example, if you touch a hot plate, you reflexively pull back your hand and your nerves simultaneously send pain signals to your brain.
Explanation:
I hope that helps
I liedmy mum that was offering economics and she said she'll go to my school cuz I came late what should I do please
Answers
Answer:
Run away from home
Explanation:
Answer: Just be upfront and honest. Punishments are temporary experiences are forever.
What is produced from
photosynthesis (select all that
apply)?
Water
oxygen
glucose
light
Carbon dioxide
uhm i really don’t know i’m really bad at this pls help
Answers
Which of the following observations would provide the strongest evidence that two plants belong to different biological species?
A. There are variations in their RNA sequences.
B. The leaves and flowers show morphological differences.
C.They produce viable but sterile offspring.
D.They occupy unique habitats in an ecosystem. .
Answers
Answer:
the answer is C
Explanation:
Even if organisms of different species combine their DNA to make offspring, the offspring will be sterile, unable to pass on their genes. Because of this restricted gene flow, each species evolves as a group distinct from other species.
The observation of plants that produce viable but sterile offspring provides the strongest evidence that they belong to different biological species (Option C).
The biological concept of species was developed by Ernst Mayr, who also develop the idea that species are metapopulation lineages.The biological concept of species states that mating between individuals of the same species produces viable offspring.The biological concept of species can be used to provide independent evidence for the presence of morphological and biological species.In conclusion, the observation of plants that produce viable but sterile offspring provides the strongest evidence that they belong to different biological species (Option C).
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Which student scenario correctly matches the Kingdoms based on the characteristics given in the chart?
O A Student i believes Kingdom A is bacteria because it is unicellular and prokaryotic. Student 2 believes that kingdom B is plant
because it is missing a cell wall and is multicellular.
O B. Student 1 believes Kingdom A is bacteria because it is unicellular and prokaryotic. Student 2 believes that Kingdom B is animal
because it is eukaryotic and heterotrophic.
OC. Student 1 believes Kingdom A is animal because it is prokaryotic and unicellular. Student 2 believes that kingdom B is bacteria
because it is unicellular and prokaryotic.
D. Student 1 believes Kingdom A is fungi because it is autotrophic and unicellular. Student 2 believes that kingdom B is animal
Answers
Answer: B
Explanation: Quizzez:)
Student 1 believes Kingdom A is bacteria because it is unicellular and prokaryotic. Student 2 believes that Kingdom B is animal because it is eukaryotic and heterotrophic.
What is a kingdom?In biological classification, a kingdom is the second highest taxonomic rank below domain. It is used to group organisms based on their similarities and differences in characteristics and traits. The system of classification, known as Linnaean taxonomy, categorizes living things into five kingdoms: Monera, Protista, Fungi, Plantae, and Animalia.
Each kingdom is defined by specific characteristics such as cell structure, mode of nutrition, and reproductive strategies. For example, the Monera kingdom consists of unicellular organisms with prokaryotic cells, while the Plantae kingdom includes multicellular organisms that produce their own food through photosynthesis.
The kingdom level of classification helps scientists understand the relationships and diversity of living organisms, which is important for fields such as ecology, evolutionary biology, and biotechnology.
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If we use the letter R to represent seed shape, what is the genotype for a heterozygous individual? What is that individual's phenotype?
Answers
Answer:
Explanation:
The genotype for the heterozygous indivdual ( 2 different alleles): Rr
The phenotype would be round.
What do your muscle cells do when they run out of oxygen for respiration?
Answers
Explanation:
When your muscle cells run out of o2 4 respiration, it relies on stored fat or lipids for energy..(glycolysis) ...
Normally this transition does not last long because muscles also depend on glucose for energy..
When muscle cells run out of oxygen for respiration, they switch to anaerobic respiration, producing lactic acid as a byproduct.
When oxygen runs gone, muscle cells switch to anaerobic respiration. Aerobic respiration generates ATP from oxygen. Muscle cells switch to anaerobic respiration during severe activity or low-oxygen settings.
Muscle cells use glucose to respire anaerobically. Glycolysis generates ATP, although less efficiently than aerobic respiration. Lactic acid, a consequence of anaerobic respiration, can build up in muscles and cause tiredness, discomfort, and burning.
Anaerobic respiration offers short-term energy but is unsustainable. Muscle cells will resume aerobic respiration to efficiently create ATP and remove lactic acid once oxygen is available.
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What are ways to "get around" the SA:V ratio?
Answers
Answer:
Turn a right on Mccallin Drive! Thank me later. ;)
Explanation:
It takes 600 J of work to lifta crate straight up but 1,200 Jto pushthat crate up a ramp to the same height. What's the efficiency of the ramp?
Answers
Answer:
50 percent
Explanation:
The efficiency of ramp can be found by using this formula
(Output work/input work)*100.
Amounts of work to lift up = 600j
Amount of work bro take up to same height = 1200j
Efficiency of ramp = (600j/1200j) * 100
= 0.5 x100
= 50 percent
Therefore from the calculations above, the efficiency of this ramp is 50 percent