Answer:
1. Helicase begins to break the hydrogen bonds between nitrogen bases.
2. DNA is stabilized by the enzyme topoisomerase.
3.DNA polymerase attaches the free-floating nucleotides to the exposed nitrogen bases.
4. DNA ligase mends Okazaki fragments.
5. Two new molecules of DNA are created.
Explanation:
Replication is a cellular mechanism by which a DNA molecule is used as template to synthesize two identical DNA molecules, and then each daughter cell receives one DNA molecule during cell division. First, DNA unwinds at dynamic structures called replication forks: a helicase enzyme opens up the double helix of the DNA at the replication fork by breaking hydrogen bonds that hold complementary DNA strands together. Subsequently, a topoisomerase enzyme removes positive supercoils generated in front of the replication fork. In the next step, a DNA polymerase extends primers (i.e., short RNA sequences that serve as templates for the starting point of replication) by adding nucleotides to the 3' end of the growing strand. The replication continues in the 5' to 3' direction on the leading strand, while the strand of the DNA that runs 5' to 3' away from the replication fork (known as the lagging strand) must be synthesized in fragments called Okazaki fragments. Subsequently, a DNA ligase enzyme facilitates the joining of the Okazaki fragments by forming phosphodiester bonds between nucleotides, thereby resulting in a continuous lagging strand. Finally, replication ends when converging replication forks meet.
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03.05 The Atmosphere and You Guided Notes
Objectives:
In the lesson you will:
describe the composition and structure of the Earth's atmosphere
describe the functions of the five main layers of Earth's atmosphere
explain how Earth's atmosphere (including the ozone layer) protects life and insulates the planet
discuss the effects of global warming and ozone depletion
Big Ideas:
Key Questions and Terms
Notes
What is the atmosphere?
It is the layer around earth that keeps gas in earth.
What gases make up the composition of the atmosphere?
Make a mnemonic sentence to remember the layers of the atmosphere.
What are the functions of each layer of the atmosphere?
What layer of the atmosphere has breathable air?
In what layer of the atmosphere is the ozone layer found?
What is the warmest layer of the atmosphere?
What is the coldest layer of the atmosphere?
In what layer of the atmosphere would you find satellites?
How does the ozone layer protect Earth?
What is ozone?
When does ozone become a pollutant?
Where is protective ozone located? Where is harmful ozone located?
How could a hole in the ozone layer affect humans?
Where are chlorofluorocarbons (CFCs) found? Why were they banned?
How does the atmosphere help insulate Earth?
What is the greenhouse effect?
What are greenhouse gases? Why are they important?
How are human activities affecting global warming?
Name three types of greenhouse gases. What types of human activities produce these particular gases?
What are some effects of global warming?
What does the term “climate change” refer to?
What is desertification?
What is a carbon footprint? What are some actions you can take to reduce your carbon footprint?
What are some of the results of too much sun exposure?
What are some ways you can protect yourself from harmful sun exposure?
Answer:
ozone is a pale blue gas which is made up of three oxygen atoms.
hole in ozone layer affect humans
bcoz harmful uv rays are entered through the hole which is dangerous to human's skin and health.
cfc are found in industries.
the trapping of the sun's warmth in a planet's lower atmosphere, due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet's surface is called green house effect
the main gases responsible for the greenhouse effect are greenhouse gases. they are important bescause Greenhouse gases keep our planet livable by holding onto some of Earth's heat energy so that it doesn't all escape into space.
effects of global warming:
1) climate change
2) melting of glacier
3) acid rain
climate change refers to the variation of the earths global or regional climate over a long period of time because of changes in environment
desertification is the process by which fertile land becomes desert, typically as a result of drought, deforestation, or inappropriate agriculture.
Answer:
Explanation:
() State another hormone that influences the concentration of glucose in the blood.
Dr. Wong was conducting a field study in the Amazon rainforest when he discovered a prokaryotic organism that has a cell wall and circular chromosomes. Which of the following would he most likely conclude about his discovery
Answer:
it is the plant cells that circle the chromosomes
A prokaryotic organism with a cell wall and a circular chromosome belongs to the kingdom Protista as plants and fungi do not have a circular DNA. Thus, the correct option is B.
What are Prokaryotic organisms?
A prokaryotic organism contains a prokaryotic cell. these cells does not possess a well-defined nucleus and other membrane-bound organelles such as mitochondria, chloroplast, etc. These cells are the most-primitive cells. Due to absence of important cell organelles, these cells cannot survive on their own and hence depend upon other organisms for their nutrition.
Prokaryotic cells have a circular DNA as the genetic material of the cell which is not enclosed in a nucleus instead present in the form of a nucleoid. Prokaryotes such as algae show presence of a cell wall and a circular chromosome inside the cell.
Therefore, the correct option is B.
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Your question is incomplete, most probably the complete question is:
Dr. Wong was conducting a field study in the Amazon rainforest when he discovered a prokaryotic organism that has a cell wall and circular chromosomes. Which of the following would he most likely conclude about his discovery?
a. the organism is either from the kingdoms Protista or Fungi
b. the organism is most likely from the Kingdom Protista
c. the organism is could only belong to the kingdom Plantae
d. the organism is not from the domain Eukarya
where can you plant a mango tree
•hill
•slope
•valley
•plain
How did the probabilities of yellow seeds and green seeds compare with each other?
Answer:
the yellow Seed is dominated to the green seats
Explanation:
the heterozygous yellow Seeded plant will have the genotype you and the green seeded plant with have yy if this to plants are crossed the
result of F1 generation will be two yy ( yellow seeds )
and two yy( green seeds) the probability of the Offspring will be 50:50
Answer:
the yellow Seed is dominated to the green seats
Explanation:
Please help!
1.) Explain why the term cycle is used to describe the biogeochemical cycles.
2.) Compare and contrast the carbon and nitrogen cycles. Specifically, identify which happens when either exists in very large quantities in the environment.
5
Select the correct answer.
Which term defines a well-supported, explanation of an occurrence of a natural phenomenon?
A.
hypothesis
B. bias
C. observation
D. theory
Please help me
Answer: the answer is D a theory
Explanation: Because it has strong evidence backing the claims it makes
Photosynthesis is the critical process for life to exist. On Earth, it is certainly the
fundamental biological process that all forms of life rely on. This is a process is
carried out by most plants, algae, and some cyanobacteria. The process has
these organisms take in carbon dioxide, water, and minerals. Then with the help of
sunlight it creates sugars that provide the organism nourishment and life-giving
oxygen.
What is the main idea of the above passage?
Answer: Photosynthesis is the critical process for life to exist.
Explanation:
The main idea is on the first line.
You can see all the information afterwards are leading to the explanation of the process of photosynthesis.
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Homologous recombination can be used in the lab to replace a gene of interest with a selection marker. To confirm that the selection marker is integrated into the correct place in the genome, sometimes a negative selection is used in addition to the standard positive selection marker. Which of the following would act as a negative selection marker?
a. Transformation of a different gene, which does not act as a selection marker, to replace the gene of interest.â
b. A second marker in the knock out cassette, that if inserted into the genome results in cell death when plated on selective media.
c. Transforming the cells with two different knock out cassettes, each containing the same selection marker3. â
Answer:
b. A second marker in the knock-out cassette, that if inserted into the genome results in cell death when plated on selective media.
Explanation:
General recombination, also known as homologous recombination, refers to the naturally occurring process of exchange of genetic material between pairs of homologous DNA sequences. This process (homologous recombination) can be exploited by genetic engineering to insert DNA segments of interest at target genes. Moreover, a cassette is a mobile DNA segment containing almost a gene and a recombination site, which is integrated into the locus/loci of interest by homologous recombination. A cassette may contain a DNA segment called 'negative marker' which prevents growth under particular conditions, while a positive marker permits growth under certain conditions. In consequence, a second marker consisting of a drug cassette may be used as a negative marker in order to evidence its insertion by inducing cell death when they are plated in selective conditions.
The second word in a scientific name is
a. all of the above
b. an adjective describing the species
c. the same for other members of the same species
d. in Latin
an adjective describing the species
Answer: c. the same for other members of the same species
Explanation: Just trust me.
What is used to link small parts together so animals can move easily from one to another
1)habitat restoration
2)relocation
3)wildlife corridors
4seed banks
Answer:
i think it is 3 wildlife corridors but i am not sure
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Cystic fibrosis Is a recessive disease that causes damage to the digestive system, lungs, and other organs of the body. Cystic fibrosis is the result of deletion mutations that are inherited from both parents. Which of the sample chromosomes shows an example of a deletion mutation?
RSTUV-XYZ ----> RSTUUV-XYZ
RSTUV-XYZ ----> STUV-XY
RSTUV-XYZ ----> RUTSV-XYZ
RSTUV-XYZ ----> KLRSTUV-XYZ
If Cystic fibrosis is the result of deletion mutations that are inherited from both parents, then the sample chromosome that shows an example of a deletion mutation is B. RSTUV-XYZ ----> STUV-XY.
What is a deletion genetic mutation?A deletion genetic mutation can be defined as an alteration in the genetic material of the cell of an individual associated with the loss of one or more nucleotides in the original sequence.
Therefore, with this data, we can see that a deletion genetic mutation is caused by the loss of nucleotides in the DNA.
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the illustration shows a model of the transport of soute particles from outside the cell to inside the cell. what type of cell transport is modeled
Answer:
The illustration shows a model of the active transport of solute particles from outside the cell to inside the cell.
Explanation:
Active Transport is defined as a process involving the movement of molecules from a region of lower concentration to a region of higher concentration against a gradient or an obstacle with the use of external energy.
This process is “active” because it requires the use of energy (usually in the form of ATP). It is the opposite of passive transport.
An example is the phagocytosis of bacteria by Macrophages.
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Increased biodiversity results in a more sustainable ecosystem because -
Answer: Because, the higher biodiversity in an ecosystem means that there is a greater variety of genes and species in that ecosystem, and stability. It makes an ecosystem more sustainable because of the food web being stronger and the organisms providing a wide variety of functions.
I hope I answered you correctly and that it helps, I'm sorry if its wrong. Good Luck!
Explanation:
Which of the following is directly responsible for an orgasm?
Answer:
ERECTION
Explanation:
Which of these actions would be controlled by the somatic nervous division of the peripheral nervous system?
A. Blood vessel dialation
B. Movement of food down the esophagus
C. Opening and closing of the eyes
D.Opening and closing of the pupils
Answer:
C
Explanation:
Untouched rangelands increase climate temperatures because their soils release carbon into the atmosphere.
True
False
Answer:
I believe it is false so I hope you get it right
Give organism a name. Give it a common name AND a scientific name.
Write a short description to describe your organism’s evolution and showcase its key traits.
Answer:
My organism is called the Red Panda (Ailurus fulgens). It is a mammal native to the eastern Himalayas and southwestern China. The Red Panda is the only living species of its genus, Ailurus, and is closely related to the Giant Panda, although it has a much more specialized diet. It is an excellent climber and has a thick, woolly coat to help keep it warm in its cold mountain habitat.
The Red Panda has evolved over time to become more specialized in its diet and habitat. Its thick fur helps to keep it warm in the cold mountain environment, while its long, bushy tail helps it balance while climbing trees. Its diet consists mainly of bamboo, but it also eats fruits, eggs, and small animals. Its sharp claws and teeth help it to break open bamboo stalks and to defend itself against predators.
Explanation:
please answer it please
Answer:
7-d
8-b
9-?
10-b
11-c
12-?
13-b
Explanation:
Which kind of light do plants use to make energy in photosynthesis?
A. Radio waves
B. Visible Light
C. Infrared Light
D. Ultraviolet Light
Answer:
B. Visible Light
Explanation:
The best wavelengths for photosynthesis fall within the blue range (425-450 nm) and red range (600-700 nm).
HELP PLSSSS
Explain the effects of the use of antibodies in the control of a disease?????
Answer:
Antibodies have three main functions: 1) Antibodies are secreted into the blood and mucosa, where they bind to and inactivate foreign substances such as pathogens and toxins (neutralization). 2) Antibodies activate the complement system to destroy bacterial cells by lysis (punching holes in the cell wall).
This is an example of a squirrel population
An example of a squirrel population would be a group of Eastern Gray Squirrels (Sciurus carolinensis) living in a city park.
What is an examples of squirrel population?An example of a squirrel population would be a group of Eastern Gray Squirrels (Sciurus carolinensis) living in a city park. Scientists may study the population dynamics and ecology of this group of squirrels by conducting surveys and capturing and marking individual squirrels to track them over time. This can provide information on their survival rates, reproduction, and movements, which can be used to estimate the size and growth rate of the population, as well as identify any factors that may be impacting the population, such as disease, predation, or habitat loss.
Additionally, scientists may also conduct transects, or study the population density, distribution of the squirrels in a specific area and the food resources that are available to them, as well as monitor the environmental factors that might affect the population growth.
Another example could be a population of Fox Squirrels (Sciurus niger) living in a rural forest. Here, researchers may study the impacts of logging and fragmentation on their population dynamics and genetic diversity, and understand how these animals are utilizing different food resources throughout the year.
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In what process do Cell Obtain energy from sugar molecules?
Answer:
Through the process of cellular respiration
Explanation:
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True or False: There are about the same number of vertebrate species as invertebrates.
A
True
B
False
Answer:
False
Explanation:
The number of vertebrate species are more...
Crictually evaluate the hallmarks of cancer?
Answer:
We define seven hallmarks of cancer: selective growth and proliferative advantage, altered stress response favoring overall survival, vascularization, invasion and metastasis, metabolic rewiring, an abetting microenvironment, and immune modulation, while highlighting some considerations for the future of the field.
(RrYy x RrYy), how many of the offspring will be dominant for both traits?
9 of the offsprings will be dominant for both traits in the above dihybrid cross.
What is a dihybrid cross?A dihybrid cross is a cross between two individuals with two observed traits that are controlled by two distinct genes.
Gregor Johann Mendel known as the father of genetics was the first person to discover the basic principles of heredity during the mid-19th century.
In a dihybrid cross between two parents that are heterozygous for both traits, the cross will result in four different combinations of seeds in the F2 generation as follows:
wrinkled-yellow round-yellowwrinkled-greenround-greenThese offsprings are in the phenotypic ratio of 9:3:3:1 where 9 represents the offsprings dominant for both traits.
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What role do neurons serve within the nervous system? Why is it so important?
Answer:
Neurons are electrically excitable cells that transmit information throughout the nervous system. They are the basic building blocks of the nervous system and perform a variety of functions, including receiving and sending signals, processing information, and controlling movement.
The nervous system is responsible for coordinating the body's activities and responding to its environment. without neurons, the nervous system would not be able to function properly. Neurons are essential for survival and play a vital role in our health and well-being.
Each day the moon rises later by approximately one hour because the:
A)Earth revolves round the Sun in 365 days.
B)Earth rotates 360 degrees on its axis in twenty-four hours.
Moon rotates 360 degrees on its own axis in twenty seven days
D)Moon's position shifts everyday due to its revolution around the Earth.
Answer:
D
Explanation:
The moon moves to the East each day (about 15⁰) in its orbit around the Earth, which takes a total of 27.3 days. The moons orbit around Earth is a complete circle, which is 360⁰. It takes approximately 1 hour each day for the Earth to catch up to the moon, delaying it's rising by 1 hour.
Select the correct answer.
Which is an example of dehydration synthesis?
A. DNA synthesis from nucleotides
B. conversion of proteins into its amino acids
C. conversion of lipids into fatty acids
Define population density as a
mathematical equation.
Answer:
The formula for calculating population density is Dp= N/A. In this equation, Dp is the density of population, N is the total population as a number of people, and A is the land area covered by that population.
Explanation:
a statistic that tells you how many people live in a certain area. ... density is reported in square miles or kilometers, and may or may not include bodies of water. This type of measurement is called arithmetic density, and is reported as the total number of people per land.