Answers
Answer:
the answer c. is correct
Explanation:
During DNA replication, the two parental DNA strands must be separated so that both strands can be copied. The resulting structure known as 'replication fork' is generated by helicase enzymes that break hydrogen bonds that hold DNA strands together, thereby the two strands of the DNA double helix uncoil at a specific location called the origin. DNA replication always proceeds in 5' to 3' direction. In consequence, a new DNA strand referred to as 'leading strand' is continuously synthesized because this strand grows in the same direction (5' to 3' direction) of the replication fork's movement, while other new DNA strand referred to as 'lagging strand' is synthesized discontinuously in short pieces called Okazaki fragments.
Related Questions
ba kiểu truyền tín hiệu của tế baò
Answers
When curare, a neuromuscular poison, is dropped onto an isolated muscle-nerve preparation in a laboratory, the muscle does not contract when the nerve is stimulated, even though neurotransmitter is released from the nerve cell. Why does this happen
Answers
Answer:
Explanation:
Whenever the nerve terminal's action potential depolarizes, calcium enters the cell through the channels. Calcium allows acetylcholine (ACh) to be released more easily. These ACh molecules subsequently circulate into the synaptic cleft and attach to the motor end-plate of the nicotinic cholinergic receptors. Acetylcholine molecules connect to nicotine ion-channel receptors present on cell membrane the of muscle cells, enabling the ion channels to open. Calcium ions then enter the muscle cell, kicking off a series of events that eventually result in muscular contraction.
Curare is a kind of neuromuscular relaxant blocker that is non-depolarized in nature. Nondepolarizing muscle relaxants work as competitive agonists, binding to ACh receptors but failing to activate ion channels. As a result, they inhibit ACh from bonding, preventing the development of endplate potentials and inducing muscle paralysis.
A person launches two model rockets, which reach the same altitude. One
rocket weighs 1.5 N, and the other weighs 3.2 N. How does the mass of the
rockets relate to the force of gravity on them?
A. The mass of the 1.5 N rocket is less than the mass of the 3.2 N
rocket.
B. The 1.5 N rocket and the 3.2 N rocket have the same mass before
they are launched
C. The mass of the 1.5 N rocket will be the same as the mass of the
3.2 N rocket when they reach the same altitude.
D. The 1.5 N rocket has more mass than the 3.2 N rocket.
Answers
A person launches two model rockets, which reach the same altitude. One rocket weighs 1.5 N, and the other weighs 3.2 N.
The mass of the rockets relate to the force of gravity on them, the mass of the 1.5 N rocket is less than the mass of the 3.2 N
rocket.
Option A is correct.
What is mass?Mass can be described as the amount of matter present in any object or body.
Weight on the other hand is a measure of force that is equal to the gravitational pull on an object.
Mass is independent of location, while weight depends on location.
In conclusion, the force of gravity on the two rockets is proportional to their mass.
Learn more about mass at: https://brainly.com/question/19385703
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im desperate- thank you so so much to any who can help
Answers
Answer:
Layer A deposited, Layer B deposited, Erosion, Layer C deposited
Explanation:
Layer C is completely flat and is at the very top, meaning it's the most recently laid soil
Layer B has a rough, rocky surface, implying it eroded before Layer C layered on top
Layer A is flat and is the furthest to the bottom
I'm rusty on stratigraphy, so bear with me:
Law of superposition
Law of horizontality
Law of superposition
In both prokaryotes and eukaryotes, initiation of translation usually
a. begins immediately upstream of a Shine-Dalgarno sequence.
b. requires the action of release factors, which cause the small and large subunits of a ribosome to associate with one another.
c. requires the action of initiation factors.
d. begins at a UAG codon downstream of the 5’ UTR of an mRNA molecule.
e. begins only after ubiquitin has been added to the mRNA molecule to be translated.
Answers
Answer:
c. requires the action of initiation factors.
Explanation:
Transcription is the process by which a fragment of DNA (e.g., a gene) is used as a template to create a complementary RNA molecule, usually a messenger RNA (mRNA) molecule which is then used to synthesize a polypeptide chain (i.e., a protein) in the ribosomes by a process called translation. Initiation factors are proteins capable of binding the ribosome in order to promote (or prevent) the initiation of translation. In prokaryotic cells, the initiation factors IF1, IF2 and IF3 (IFs) are required for the selection and the quantity of the protein produced. In eukaryotic cells, translation initiation occurs when an initiator tRNA, 40S, and 60S ribosomal subunits are assembled by eukaryotic initiation factors (eIFs) into an 80S ribosome on the initiation codon of an mRNA. In eukaryotes, translation initiation is promoted and regulated by at least twelve eIFs (e.g., eIF1, eIF1A, eIF2, eIF3, eIF4, eIF5, eIF5A, eIF5B, etc) which are composed of many polypeptides.
In the SDS-PAGE (sodium dodecylsulfate - polyacrylamide gel electrophoresis) method, separation takes place on the basis of:_____________
a. charge only, because all particles have different charges, but the same mass.
b. the sieving action of the gel, because all particles have the same charge, but different masses.
c. the sieving action of the gel, because all particles have approximately the same charge/mass ratio, but different masses.
d. the chemical nature of the buffer used as the electrolyte.
Answers
Answer:
B
Explanation:
Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) is a method of separating molecules based on the difference of their molecular weight.
Which of the following best describes why we see different moon phases?
A. The moon revolves around the Earth once a month.
B. The earth revolves around the moon once a month.
C. The amount of sunlight hitting the moon changes over time.
D. The earth revolves around the run once a year. (This one ??)
Answers
Answer:
It's C.
Explanation:
What we see as phases of the moon is the reflection of sunlight bouncing off the moon's surface.
We see different moon phases because the moon revolves around the Earth once a month.
FACTS ABOUT THE MOON:
The moon is the only satellite that the Earth has. The rotation of the moon around the Earth makes us experience day and night. The moon as a celestial body does not possess a light of its own, hence, the light we see when looking at the moon is that from the sun. It takes a month (about 27 days) for the month to complete its evolution around the Earth. Hence, we see different phases of the moon based on the part of the moon being lit by the sun. This different phases of the moon we observe is only possible because the moon revolves around the Earth once a month.Learn more: https://brainly.com/question/21199365
I need a little help
Answers
Answer:
do i look like a genes
Explanation:
cant help
Consider the spread of the following emerging infectious diseases, using the chain of infection: E. coli O157:H7, Lyme disease, Ebola virus, hantavirus, influenza, tuberculosis, vCJD. For each disease, explain how the chain of infection can be interrupted?
Answers
Answer:
If one link is stop working.
Explanation:
There are six points at which the chain of infection can be broken or interrupted and a germ can be stopped from infecting another people. The six links are the infectious agent, reservoir, portal of exit, mode of transmission, portal of entry, and susceptible host. If one of the link is broken or interrupted, no infection occurs in the body of an individual because all the links are attached to each other in the form of chain which can stop working if one of it stop working.
What sugars are composed of short chains
Answers
The monosaccharides glucose, fructose, and galactose are single sugar molecules. The disaccharides sucrose, lactose, and maltose are double sugar molecules. Complex carbohydrates are chains of more than two sugar molecules. Short carbohydrate chains are called oligosaccharides and contain 3 to 10 sugar molecules.
•. What is the phenotypic ratio of complementary gene?
a) 1:2:1
b) 9:7
c) 13:3
d) 9:3:3:1
Answers
Can parents with A and B blood type have a baby of O
if yes please state reason
Answers
Answer:
Explanation:
so is AB blood type. But someone who has a B and an O version only makes the B protein. They are B blood type but can pass the O onto their kids. So two B parents can make an O child if both parents are BO
Can parents with A and B blood type have a baby of O?
answer : yes
please mark brainliest
If producers receive 1,000kcal of energy from the sun, what would the tertiary consumers in that energy pyramid receice? (draw a pyramid to assit you)
A.100 kcal
B.100,000 kcal
C.10 kcal
D.1 kcal
Answers
Answer
D. 0.1kcal
hope it helps?
If producers receive 1,000kcal of energy from the sun, the energy received by the tertiary consumers in that energy pyramid is 1kcal. So, the correct option is D.
What is the food web?When many food chains of an ecosystem are interconnected with each other to make a complex web-like structure is known as the Foodweb.
Lindeman gave the 10% law which means at each step of the food chain when food energy is transferred from one trophic level to the next trophic level, only about 10% of energy is passed on to the next trophic level.
Producers (100%) → Primary consumer (10%) → Secondary consumer(1%) → Tertiary consumer (0.1%).
Therefore, If producers receive 1,000kcal of energy from the sun, the energy received by the tertiary consumers in that energy pyramid is 1kcal.
To learn more about the Food web, refer to the link:
brainly.com/question/17708630
What is the complimentary dna strand for TCTTAAATGATCGAT
Answers
Answer:
AGAATTTACTAGCTA
Explanation:
The DNA strand pairs are:
Adenine (A) -- Thymine (T)
Cytosine (C) -- Guanine (G)
and vice versa.
The given strand:
TCTTAAATGATCGAT
Based on the given pairs above, your answer will be:
AGAATTTACTAGCTA
~
2. What is another word for sound quality?
timbre
interference
overtone
acoustics
Answers
Answer:
acoustics timbre are other words for sound quality
Answer:
I would say timbre.
Explanation:
I hope this helps u
Legend has it that there was a less famous geneticist in the 1800s
named Megor Grendel. He did his experiments with the cats that lived in the monastery's barn. Here are some results from one of his 16 crosses:
Cross #3 Maggie (orange) x ? (possibly Tom, or maybe Bill)
Kittens:
1. light orange female
2. dark orange male
3. black female
4. light orange female with white paws
5. black male with white paws
6. orange ? (sex undetermined; died at birth)
Answers
Answer:
Few crosses
The complexity of cat genetics
Crosses not controlled by the researcher
Explanation:
The purpose of this question is to determine why Megor Grendel is less famous than that of Gregor Mendel.
Gregor Mendel examined pea plants, which have a number of benefits for deducing genetic rules, including:
The researcher has total control over the crosses. Because the peas have both self and cross-fertilization, it is possible to alter the crosses in the simplest way possible. Pea plants may be examined for a greater series of generations than cats or other animals. Because plant genetics is not overly complicated, several traits may be investigated at the same period.As a result, the primary factors why Megor Grendel's experiments are not well-known:
The presence of only a few crossings: It is impossible to establish a genetic theory with such a small number of crossings on the test subject of the organism. Cat genetics is too complicated therefore, the fur gene color on the X-chromosome, a characteristics mosaic inheritance. As a result, It is much too complicated to deduce an inheritance pattern. Crossings that the researcher cannot fully control. Unlike plants, crosses in animals cannot be totally controlled by the researcher.As a result, it is impossible to draw any conclusions from them.
in pea plants yellow seed color
Answers
The graph below shows the changes in the number of species in an ecosystem
Species Diversity
300
200
Number of Species
|..
100
و 12 19 0
1989
1994
1980
Year
Which event was most likely the cause of the changes in species diversity in this ecosystem?
A large volcanic eruption
B A flash flood
Amatorado
D Amigration of cuts
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Explain Okazaki fragments as applied in DNA replication
Answers
Answer: 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.
Explanation:
Hope it helps you if not sorry
Các enzyme xúc tác phản ứng thường có cấu trúc bậc mấy? Tại sao?
Answers
Answer:
Một phản ứng enzym thường bao gồm một chuỗi các bước như liên kết cơ chất không hóa trị, cấu hình lại hình học của enzym ở trạng thái liên kết, sự biến đổi hóa học của cơ chất thành sản phẩm và giải phóng sản phẩm. (Xin lỗi, tôi không giỏi tiếng Việt lắm nhưng tôi đang cố gắng nên tôi hy vọng điều này sẽ giúp bạn một chút)
what is a Businesses favor:
Answers
Answer:
Like what would you want to do to start a business
Explanation:
The attraction forces between atoms or molecules of a liquid become ______ during turbulent flow.
Answers
Can you catch a stomach flu/stomach virus/food poisoning from someone you gave it too, or is your immune system better after the first stomach flu/stomach virus/food poisonings that it's impossible, such as other viruses like the common cold?
Answers
Answer:
no i dont think so
Explanation:
this is because your body had alreay build immue to the stomach viruse after you had it
According to the universal law of gravitation
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Answer:
Newton's law of gravitation, statement that any particle of matter in the universe attracts any other with a force varying directly as the product of the masses and inversely as the square of the distance between them
How does a mutation in a sex cell differ from a mutation in a non-sex cell?
A. Mutations in sex cells are more deadly
0
B. Mutations in sex cells can be passed on to children.
c
C. Mutations in sex cells are chromosomal mutations.
a
D. Mutations in sex cells are silent mutations,
Answers
Answer:
B
Explanation:
B
A mutation in a sex cell (sperm or egg cell) differs from a mutation in a non-sex cell (somatic cell) in several ways: . Mutations in sex cells can be passed on to children and Mutations in sex cells are chromosomal mutations and may more.
How are mutations can be passed on to children ?Mutations in sex cells can be passed on to children: When a mutation occurs in a sex cell, it can be passed on to the offspring and become a hereditary condition. On the other hand, mutations in non-sex cells cannot be passed on to offspring.
C. Mutations in sex cells are chromosomal mutations: Sex cells contain chromosomes, and mutations in these cells can result in chromosomal abnormalities that can affect the development and health of the offspring.
Thus, A and D are incorrect. Mutations in sex cells are not necessarily more deadly than mutations in non-sex cells, and they are not always silent mutations. The effects of a mutation depend on its location and the function of the gene affected.
Learn more about mutations at :
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A cell has twice as many mitochondria as a typical cell. It also has a large amount of rough ER. What functions
might that cell have?
Answers
Answer:
below
Explanation:
Amino acids are the building blocks of which class of macro molecules
Answers
1)protiens
2)lipids
3)carbohydrates
4)nucleotides
Answers
Answer:
proteins
Explanation:
they can also form enzymes ( all enzymes are proteins)
__________ law, which helps explain the critical closing pressure, states that the force that stretches the vascular wall is proportional to the diameter of the vessel times the blood pressure.
Answers
Answer:
Laplace law
Explanation:
Have a nice day :)
show the outcome of the offspring genotypes and their
phenotypic ratio if parental genotype WWPP was cross bred with wwpp
(8)
Answers
Answer:
Ww Ww Pp Pp Wp Pw Wp Pw
Explanation:
what are some of the actions that the somatic nervous system does?
Answers
Answer
It regulates voluntary activities.
It relays information to and from skin and skeletal muscles
Explanation
The somatic nervous system is part of the peripheral nervous system (part of the nervous system consisting of nerves and ganglia, and whose essential role is the transmission of information between the central nervous system - brain and spinal cord - and organs). It intervenes in the voluntary control of movements (or involuntary movements in case of reflexes, but this is different from the involuntary activities) (efferent fibers) and in the perception of external stimuli (afferent fibers).
The somatic nervous system controls the movements of skeletal muscle (which are generally voluntary) and the environmental perception, (think to the arc reflex).
The involuntary activities (proposition 1) mean automatisms like the heartbeat, respiration, secretions of hormones or sweat