Answer:Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment. During separation, the two strands of the DNA double helix uncoil at a specific location called the origin.
Explanation:
how is the habitat in arctic tundra
Answer:
Tundra ecosystems are treeless regions found in the Arctic and on the tops of mountains, where the climate is cold and windy, and rainfall is scant. Tundra lands are covered with snow for much of the year, but summer brings bursts of wildflowers.
Which treatment would be considered gene therapy?
removing an organ that is not working properly
giving medicine to match the effects of a gene
working correctly
introducing a new gene to the body
giving medicine to kill infections
Answer:
introducing a new gene to the body
Explanation:
This because gene therapy is the process where gene from genetic material or DNA is transfered or introduce into the body of a patient to treat diseases or certain infections. This is done to cure ailments. This is a process that modify the gene that is present in the patient body which is the source or cause of the disease and then make it to work normally.
PLEASE HELP!!!!! PLEASE HELP!!!
Answer:
its "A" water flowing over a tall cliff
Explanation:
The space surrounding the nucleus of an atom contains what particles?
Answer:
An atom is composed of two regions: the nucleus, which is in the center of the atom and contains protons and neutrons, and the outer region of the atom, which holds its electrons in orbit around the nucleus.
The space surrounding the nucleus of an atom contains electrons.
Negatively charged electrons are subatomic particles that orbit the nucleus of an atom at a particular energy level, or electron shell. Compared to the other particles inside the nucleus, protons and neutrons, they are very light and small. Despite having much less mass than protons and neutrons, electrons play an important role in determining the general behavior and characteristics of atoms.
The configuration of electrons in an atom's electron shell determines its chemical structure and reactivity. Depending on how far they are from the nucleus, electrons reside in different energy levels, with the maximum number of electrons allowed in each level.
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Answer:
1. The difference between the normal hemoglobin protein DNA sequence and the sickle cell hemoglobin DNA sequence is a base to base shift, in this case adenine (GAG) to thymine (GTG).
2. The difference affects the amino acid sequence of the protein by replacing glutamic acid (Glu) with valine (Val).
Explanation:
In sickle cell anemia, a change in the DNA nucleotide sequence is observed, where adenine is substituted by thymine, whose expression is the change in the amino acid sequence of globine β, incorporating valine instead of glutamic acid. This represents a molecular mutation - point mutation - by subtitution, which corresponds to missense mutation.
Normal hemoglobin protein in a RBC
DNA CTG ACT CCT GAG GAG AAG TCT
Amino acids Leu Thr Pro Glu Glu Lys Ser
Sickle cell hemoglobin protein in a RBC
DNA CTG ACT CCT GTG GAG AAG TCT
Amino acids Leu Thr Pro Val Glu Lys Ser
When GAG is transcribed to mRNA, the CUC codon is obtained, which codes for glutamic acid. Thymine substitution causes the DNA sequence to change to GTG, which is transcribed as CAC, the codon that encodes the amino acid valine. The change from glutamic acid to valine in β-globin causes an altered hemoglobin, giving the abnormal erythrocytes observed in sickle cell disease.
Describe the rate of division of cancer cells
Answer: God bless you
Explanation:
Cancer cells divide without a 'go' signal. Normal cells cease dividing when DNA is damaged, but cancer cells continue. 'Daughter' cells with aberrant DNA or chromosomal numbers result.
What are cancer cells?Cancer cells are able to divide even if they have not received the signal that says "all clear." Cancer cells, on the other hand, will continue to divide even in the face of genetic (DNA) damage, which causes normal cells to cease dividing. "Daughter" cells are the end product of this process, and they are characterized by aberrant DNA as well as abnormal numbers of chromosomes.
It is possible for cancer cells to detach from the primary tumor and migrate through the circulatory or lymphatic systems to other parts of the body, where they can then form new tumors after emerging from the blood or lymph vessels. This process is known as metastasis. Cancer is a disease that is created when cells divide without control and spread into the tissues that are in close proximity to them.
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Which of the following is a way that lakes differ from ponds?
A) temperature variation
B) size
C) effect on weather conditions
D) all of the above
PLS HELP ASAP
Based on the similarities, what defines an ecosystem?
Answer:
An ecosystem consists of a community of organisms together with their physical environment. In ecosystems, both matter and energy are conserved. Energy flows through the system usually from light to heat while matter is recycled.
Explanation:
3. Two parents bring their 4-year-old son, James, to the doctor because he is having
difficulty walking. He is diagnosed with a genetic disorder called Duchenne muscular
dystrophy, which affects males much more often than females. When genetic testing of
the family is done it is found that James' grandmother, mother, and one of his sisters are
all carriers for the disease. What is the most likely inheritance pattern for this disease?
i
Answer:
from his mother
Explanation:
because they have one copy of X chromosome from their mother and if X chromosome have DMD gene mutation so he will have DMD
A half-life is the time required for one half of the atoms of a radioactive substance to decay. Do these special type of atoms continue to decay until they become stable atoms and they do not give off energy anymore?
Answer:
Half-life, in radioactivity, the interval of time required for one-half of the atomic nuclei of a radioactive sample to decay (change spontaneously into other nuclear species by emitting particles and energy), or, equivalently, the time interval required for the number of disintegrations per second of a radioactive
Explanation:
PLEASE HELP
Which process does this picture show?*
Transcription
Translation
Replication
Transformation
Which of the following are ways that the respiratory system works with the immune
system to keep humans from getting sick? (Choose all that apply
1.) Coughing involves a quick contraction of the diaphragm muscle, forcing air
through the respiratory pathway, and dislodging mucus or other harmful
particles
2.) Alveoli transfer bacteria and viruses to the bloodstream to be disposed of.
3.) Cilia function like a filter, trapping dust and pollen in the nose,
4.) Mucus traps bacteria and viruses to be removed or swallowed.
Answer:
1.) Coughing involves a quick contraction of the diaphragm muscle, forcing air
through the respiratory pathway, and dislodging mucus or other harmful
particles
3.) Cilia function like a filter, trapping dust and pollen in the nose,
4.) Mucus traps bacteria and viruses to be removed or swallowed.
Explanation:
Coughing involves a quick contraction of the diaphragm muscle, forcing air out while the cilia act like a filter, trapping dust and pollen in the nose. Mucus traps bacteria and viruses to remove or swallow. So, the correct options are A, C and D.
What is Respiratory system?The respiratory system is defined as the network of organs and tissues that help us breathe which includes the airways, lungs, and blood vessels. The muscles that power the lungs are also part of the respiratory system where these parts work together to move oxygen throughout the body and clear out waste gases like carbon dioxide.
Respiratory system works in that way with the immune system by keeping the human from getting sick by bacteria and viruses are removed or swallowed by mucus, while the cilia act like a filter, trapping dust and pollen in the nose.
Thus, coughing involves a quick contraction of the diaphragm muscle, forcing air out while the cilia act like a filter, trapping dust and pollen in the nose. Mucus traps bacteria and viruses to remove or swallow. So, the correct options are A, C and D.
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The prime factorization of blank is 24 × 5.
Answer:
80
Explanation:
Answer:
120 hope this helps :)
Explanation:
Cindy/was diagnosed with anemia recently, because her physician found that her blood contains a lower count of red blood cells than normal. 4 A) What is anemia's immediate impact on gas exchange?
Answer:
The correct answer would be - a decrease in the numbers of RBCs will lead to a decrease in the ability for gas exchange in a person.
Explanation:
In the case of anemia, there would be a decrease in the number of RBCs that might be due to increased destruction of these cells, or low production of RBCs, that transporting oxygen and carbon dioxide affects the ability for gas exchange in an individual.
RBCs carry and transport oxygen to various body parts and then carry back carbon dioxide from different parts of the body to the lungs for gaseous exchange but with less number of RBCs leads to impair or decreased gas exchange in the case of anemia.
1. the process some organisms are able to use by which they convert light energy to chemical energy 2. the main method photosynthesizing organisms use for carbon dioxide fixation Photosynthesis 3. a set of chemical reactions that break down pyruvate, producing electron carriers for an electron transport chain that powers ATP production 4. the process cells use to produce energy from carbohydrates 5. a substance that absorbs some wavelengths of light and reflects others, giving something its color 6. the green substance that absorbs light and provides energy for photosynthesis 7. disc-shaped sacs in chloroplasts in which photosynthesis takes place 8. the series of molecules in the inner membranes of chloroplasts and mitochondria down which excited electrons pass, releasing energy for ATP production 9. process by which NAD is recycled under anaerobic conditions in order to continue the break down of carbohydrates to supply energy for producing ATP 10. adenosine triphosphate, a substance that stores and releases energy for most cell processes 11. describes a process that requires oxygen
Considering the given descriptions of metabolic reactions, the correct terms described are:
1. photosynthesis.
2. photosynthesis
3. citric acid cycle.
4. respiration.
5. pigments.
6. chlorophyll.
7. thylakoids.
8. electron transport chain.
9. fermentation.
10. Adenosine triphosphate
11. Aerobic reactions
What is photosynthesis?Photosynthesis is one of the many chemical reactions that occur in living organisms.
Photosynthesis is the process by which living organisms known as plants use the energy of sunlight to convert carbon dioxide and water into chemical energy stored in foods.
These chemical reactions are known as metabolic reactions and are essential for the growth and development of the living organism.
Considering the given descriptions of metabolic reactions:
Photosynthesis is the process some organisms are able to use by which they convert light energy to chemical energy. It is the main method by which photosynthesizing organisms use for carbon dioxide fixation to produce food nutrients.
The green pigment that absorbs light and provides energy for photosynthesis is chlorophyll.
Pigments are substances that absorb some wavelengths of light and reflect others, giving something its color.
Chlorophyll is found within chloroplasts. Thylakoids are disc-shaped sacs in chloroplasts where photosynthesis takes place.
Through the process of respiration, cells produce energy from carbohydrates. In living organisms such as man, the citric acid cycle is a set of chemical reactions that break down pyruvate, producing electron carriers for an electron transport chain that powers ATP production.
Adenosine triphosphate, ATP, is a substance that stores and releases energy for most cell processes.
The electron transport chain refers to a series of molecules in the inner membranes of chloroplasts and mitochondria down which excited electrons pass, releasing energy for ATP production.
ATP production can occur under aerobic or anaerobic conditions.
Aerobic reactions are processes that require oxygen while anaerobic reactions do not require oxygen.
The process by which NAD is recycled under anaerobic conditions in order to continue the breakdown of carbohydrates to supply energy for producing ATP is called fermentation.
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In the late 1800s, a biologist studying animal embryos coined the phrase "ontogeny recapitulates phylogeny," meaning that the physical development of an animal embryo (ontogeny) seemed to retrace the changing form of the species during its evolutionary history (phylogeny).
Why would embryonic development retrace evolutionary steps?
Answer:
Embryo provides information about their ancestors.
Explanation:
Embryonic development retrace evolutionary steps because embryo provides evidence for evolution as embryo formation in widely-divergent groups of organisms are conserved. This embryo provides information that leads to their ancestors from which they evolve so we can say that embryonic development provides evidence for evolution of an organism.
Please I need this now
Answer:
D!
Explanation:
Membrane potential pogil. Pls help
Help As soon as possible !!!
Where does carbon dioxide end up?
Answer:
Only about 50 percent of the CO2 from human emissions remains in the atmosphere. The remainder is approximately equally split between uptake into the land biosphere and into the ocean.
Explanation:
Used oll should be
A) O Poured onto grass
B) O Recycled
C) Placed in a container with antifreeze
Shops must follow si
DO Poured down the drain
Answer:C) Placed in a container with antifreeze
Shops must follow si
Explanation:
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Madison's group lab is given a dish that contains sand, shells and water. How should they classify the substance they have been given?
A: The solution is a homogenous mixture because it has the same uniform appearance and composition throughout
B: The solution is a heterozygous mixture because it does not have the same uniform appearance or composition.
C: The substance is a compound because it contains several elements.
D: The substance is a pure substance because it's made up of various compounds.
When a cow is cloned to make exact copies of the adult cow, what is this called?
A) embryonic cloning
B) therapeutic cloning
C) SCNT
In order to extract DNA from strawberry cells, what will need to happen at the cellular level?
Answer:
Tiene que romperse la membrana plasmática para poder acceder al núcleo de la célula y posteriormente romperse también la membrana nuclear para dejar libre al ADN
Explanation:
Make a food web for the rainforest
(No pictures needs to be written)
Answer:
Producers are bamboo trees, coconut trees, banana tree, shrubs , bromeliads e t.c.
The primary consumers are monkey, grasshopper, bats, macaws, butterflies, sloths.
Secondary consumers are iguanas, vampire bats, frogs.
Tertiary consumers are Jaguar and python.
Decomposers are insects, microorganisms.
Explanation:
Food webs refers to association that comprises of interconnections of several food chains or what organisms feed on or live on in an ecological community. Food web comprises of producers, primary consumer, secondary consumer , tertiary consumer and decomposers.
Which of the following is the lysosome?
Answer:
D
Explanation:
9. What happens when most chemical changes take place
a. Only the form of the matter changes.
b. The mass of the matter increases.
c. There is no change in heat.
d. Heat is liberated or absorbed.
Make a list of the energy carriers involved in the Krebs cycle. Include their names before and after they accept the electrons.
Thank you!
Answer:
12
Explanation:
Explain an example why selective breeding is an example of biotechnology
If you could see the new moon, at what time of day (roughly) would it rise?
Astronom
Answer:
Rises at sunrise, transits meridian at noon, sets at sunset.
Explanation:
I think this is the closest answer :)