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
Describe the process of oxidation in terms of electrons AND energy.
Oxidation is described as the loss of electrons and energy by a molecule.
OXIDATION:Oxidation is a process whereby a molecule loses electrons (e-) or energy to become positively charged. Oxidation changes the oxidation number of the molecule involved depending on the number of electrons lost. Reduction is the opposite of oxidation, and it entails gain of electrons and energy by a molecule. Together, they are called oxidation-reduction or redox reaction.Learn more about oxidation at: https://brainly.com/question/3867774?referrer=searchResults
PLEASE I HAVE UNDER 30 MINUTES!!! (No links)
[botany] Boll Weevils are an invasive species that has developed resistance to many major pesticides. Evaluate how
this influences the Boll Weevils' success and the options that can be used to control them.
Answer:
boll weevills succes is greatly dependent on its ability to adapt and invade homes this way they are able to live in sheltered areas made by humans and the humans can't get rid of them. a potential way to get rid of them is to find a poison that they'll take for food and that will surely kill them and not just maybe.
a mechanism for evolution in nature
Answer:
Natural selection
Explanation:
Have a great day!
Answer:
natural selection
Explanation:
natural selection is one of many mechanisms for evolution in nature. it's one of the most viewed mechanisms for evolution. Natural selection occurs when one allele makes an organism that is more or less fit, that has the ability to survive and reproduce.
hope this helps :)
which blood vessel brings oxygenated blood from lungs to heart ?
Answer:
Pulmonary vein
Explanation:
This vein transports oxygenated blood from the lungs to the heart to be sent to other body parts.
If red blood cells are placed in distilled water and examined under a microscope
no cells are seen.
Explain why no red blood cells would be seen
Answer:
The distilled water made the red blood cells burst.
Explanation:
Distilled water is a hypotonic solution containing ZERO salt content. It is 100% water, making the red blood cells (RBC) take in water that causes the RBC to swell, then burst.
Ignore the clicked answer, i accidentally clicked it and can't undo it. ;D
What is the term used to identify a molecule responsible for reducing the amount of
energy needed for chemical reactions to happen?
Answer:
The process of speeding up a reaction by reducing its activation energy is known as catalysis, and the factor that's added to lower the activation energy is called a catalyst.
Explanation:
I hope this helps
Students were given a list of seven elements and asked to identify the four elements that are most abundant in biomolecules. Which table correctly identifies the four most-abundant elements in biomolecules?.
Answer:
Carbon, hydrogen, nitrogen, oxygen
Explanation:
Not sure what the tables are?
Biomolecules are important for living organisms and vital for cell structure and functioning. The cells are made up of biomolecules as their structural organization.
The four most abundant biomolecules are:
Carbon, Oxygen, Nitrogen and Hydrogen
The biomolecules can be explained as:
The central biomolecules for life activities are these elements that contribute to major processes.The main building blocks like carbohydrate is composed of carbon, oxygen and hydrogen. They provide energy to the body by breaking into small molecules.Proteins are vital for cell signalling and transport. They are composed of amino groups consisting of nitrogen.Therefore, carbon, nitrogen, hydrogen and oxygen are the most abundant biomolecules.
To learn more about biomolecules follow the link:
https://brainly.com/question/15157257
explain how a mutation could have no effect on the organism that inherits the mutation
Answer:
A mutation could have no effect on the organism that inherits the mutation because of the chances of the organism's parents/producers. One parent may be dominantly having the mutation while the other parent may have the mutation but does not display its effects, thus labeling this parent as a carrier of the trait/mutation. Drawing a punnet square would best be used to describe the possibilities of each offspring and how each carries or shows the mutation inherited from their parents.
hope this helpsss
what is photosynthesis?
Photosynthesis is the process by which plants generate simple carbohydrates. This process used the energy from the sun.
Photosynthetic reactions:Photosynthesis refers to the metabolic process by which plants and algae use the energy from the sun and carbon dioxide to generate simple carbohydrates and oxygen.Photosynthetic reactions can be divided into light-dependent reactions and light-independent reactions.The light-independent reactions (also called the Calvin cycle) generate simple carbohydrates such as glucose.In conclusion, in photosynthetic reactions, plants turn carbon dioxide (CO2) and water (H2O) into simple carbohydrates by using the energy from the sun.
Learn more about photosynthesis here:
https://brainly.com/question/1388366
In a phrase, tell what each scientist did to help develop the cell theory
Answer:
English scientist Robert Hooke published Micrographia in 1665. In it, he illustrated the smallest complete parts of an organism, which he called cells. theory that all organisms are made of cells, which are the basic structural units of life
Hello please asap pleaseeeeee
Answer:
first option stores water
Explanation:
vacuole stores substances
how can you distinguish the dorsal from the ventral horns
What are the front 4 teeth in your mouth called
Answer:
Incisors
Explanation:
The front 4 teeth in your mouth called 'Incisors'. The incisors are the eight teeth that are most visible in the front of the mouth.
Hoped this helped.
Explain how a cell uses mitochondria, cell membrane, lysosomes, and vacuoles to make energy.
Answer:
How does the cell membrane and mitochondria work together to make energy?
Explanation:
Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).
How did scientists bring back she Spanish Flu?
Answer:
By replacing the genes for either the 1918 virus’s surface protein
Explanation:
___________________________ structure is the distribution of individuals among various age groups in a population.?
Answer:
Distribution structure is the distribution of individuals among various age groups in a population.?
Explanation:
1 generation of peas contains 20 individuals. 10 have the genotype YY and 10 have the genotype yy. In the following generation, 5 are YY, 10 are Yy and 5 are yy. Did this population deles evolve? a. Yes, the genotype frequencies changed from 1 generation to the next b. Yes, the allele frequencies changed from 1 generation to the next C. No, the genotype frequencies did not change from 1 generation to the next d. No, the allele frequencies did not change from 1 generation to the next
Answer:
b.Yes,the allele frequencies changed from 1 generation to the next
How much of Earth's land is currently used to grow food?
1/4
1/2
1/3
3/4
1/2
Explanation:
found an .org site that says so. tried to find a .gov but I'm lazy sorry. still, .or sites are pretty reliable.
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:
-
PLEASE HELP!!!!!!!!
Which phrase best describes the context of a speech?
A. The crowd's overall feelings
B. The visual aids the speakly uses
C. The quality of the fact-checking
D. The evidence the speech presents
Answer:
I believe it would be D The evidence the speech presents
Explanation:
The context of a speech refers to the purpose, which makes me think it would best be described as the evidence since evidence is used to prove your purpose.
The following is a short section of a DNA template before replication:
3' TACGGCTTAACC 5'
Based on your knowledge of DNA replication, which sequence would be the correct complementary strand synthesized by DNA polymerase?
A. 5' GGTTAAGCCGTA 3'
B. 5' AUGCCGTTUUGG 3'
C. 5' ATGCCGAATTGG 3'
D. 5' CCAATTCGGCAT 3'
Please Help!!
Answer I need help with this too
Explanation:
Hormones exert an effect only on a gland or organ that has a ________ where that specific hormone can bind.
Hormones excite, inhibit, or regulate the activity of other organs when they exert their effect on a target cell where that specific hormone can bind.
A hormone is the substance secreted by certain glands that promotes, blocks or regulates the activity of the organs.
Target cells are cells that possess specific receptors for hormones on their surface.The recognition of a hormone by its target cell lies in the presence at the cellular level of glycoproteins, called receptors, which bind specifically to the hormone, with high affinity and in a reversible way.Receptors present some differences related to the type of hormone or neurotransmitter to which they bind, with their location in the cell and with the way of transferring information after their union with these molecules.Therefore, we can conclude that hormones are produced by certain glands, circulate through the blood and reach other cells called target cells, exerting a regulatory effect on them.
Learn more here: https://brainly.com/question/13334568
Decomposers make ______
available.
A. erosion
B. air
C. weathering
D. nutrients
Answer:
D
Explanation:
Answer:
D. Nutrients.
Explanation:
Which statement best describes scientists who contributed to the current body of scientific knowledge?
A. they were made up of men and women throughout history of different countries
B. they were mainly ancient philosophers whose theory stood the test of time
C. they were mainly from European countries such as England and France
D. they were wealthy men during the 20th century
Answer:
A
Explanation:
Answer:
A
Explanation:
Which of the following happens during interphase?
Answer:
Interphase is the portion of the cell cycle that is not accompanied by gross changes under the microscope, and includes the G1, S and G2 phases. During interphase, the cell grows (G1), replicates its DNA (S) and prepares for mitosis (G2). ... In interphase, the cell gets itself ready for mitosis or meiosis.
Explanation:
Answer:DNA replication takes place making two identical copies of the genome of the cell.
Explanation:
Which is the best hypothesis for the extinction of the dinosaurs at the end of the Cretaceous period?
A.
Mammals evolved and killed the dinosaurs.
B.
Humans destroyed all the dinosaurs.
C.
The climate changed and the dinosaurs could not adapt.
D.
The dinosaurs killed each other.
Answer:
extinction, the best-known being the non-avian dinosaurs. It also destroyed myriad other terrestrial organisms, ...
Explanation:
....
1. List 4 classes of animals reared in the Caribbean ___________________________________________________________ ___________________________________________________________ 2. Identify 1 class of animal stated above and state the purpose(s) for rearing ___________________________________________________________ ___________________________________________________________ 3. Define the following terms: Breed, Species, Herd ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ 4. To which class of animal do the following terms refer? (a) Bovine: ___________________________________ (b)Ovine: ____________________________________ (c) Equine: ____________________
Answer:
1. Pigs, Sheep, Goats, Cattle
2. The purpose of rearing pigs is to utilize them for human food but also supply skin, fat and other materials for use as clothing or leather, ingredients for processed foods, cosmetics, and medical use.
3. Breeding - when animals mate and then produce offspring.
Species - Organisms that have lots of characteristics in common, and can mate to produce fertile offspring.
Herd - a social group of certain animals of the same species, either wild or domestic.
Explanation:
4. Bovine - Cattle, Goats, Pigs
Ovine - Sheep
Equine - Horses and other members of the horse family
what is found in the body cells but not sex cells
Answer:
Sex Cells have 1 set of chromosomes while Body Cells have 2 sets of chromosomes
Meiosis reduces chromosome number so that sex cells (eggs and sperm) have a half set of chromosomes–one homolog of each pair. This is the haploid number.
Explanation:
Chlorophyll, the primary photosynthetic pigment, emits light in the red region of the visible spectrum. The presence of chlorophyll correlates with photosynthetic capacity. Under a fluorescent microscope, which part of a leaf do you think would fluoresce in the red region of the spectrum?
Answer:
The mesophyll is the main site of photosynthesis.
Explanation: