What is the first step of DNA replication?
A. Free nucleotides bond together in the correct sequence.
B. A single-stranded RNA molecule forms.
C. The DNA transfers its information to RNA through an amino acid.
D. The DNA molecule unzips along weak hydrogen bonds.
Answer:
D
Explanation:
The first step in DNA replication is to 'unzip' the double helix structure of the DNA molecule. This is carried out by an enzyme, called helicase which breaks the hydrogen bonds? holding the complementary bases of DNA together
DNA replication is the biological process of producing two identical replicas of DNA from one original DNA molecule. The option (D) is correct.
DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. Replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell.
Moreover, DNA must replicate (copy) itself so that each resulting cell after mitosis and cell division has the same DNA as the parent cell. All these cells, the parent cell and the two new daughter cells, are genetically identical.
Therefore, DNA replication is the process of creating two identical daughter strands of DNA. DNA replication occurs in the nucleus in eukaryotic cells and in the nucleoid region in prokaryotic cells. DNA replication occurs in S phase during the cell cycle prior to cell division.
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what are 3 positive things human do that impact the environment ?
Answer:
Ways in which people positively affect ecosystems around the world include: Recycling. Establishing wildlife preserves and parks. Creating green, open space laws.
Explanation:
:D
Some cells have multiple dendrites and/or axons. What advantages does this have for the nervous tissue?
Answer:
It receives information from several cells.
Explanation:
The main advantage of cells having multiple dendrites and/or axons is that it receives information from several cells as compared to those cells which have one dendrite and receive information from only one cell. If neurons have hundreds or thousands of dendrites, so these dendrites allow the cell to receive information from thousands of other cells. So we can say that dendrites number plays a key role in nervous tissue.
DNA passes information to RNA during which process:
a
repication
b
translation
c
transformation
d
transcription
Explain the concept Conservation of Matter
Answer:
Concept of Conservation: Matter cannot be created or destroyed. Matter can only change forms!
Explanation:
conservation of matter - a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system
Fermentation does not produce ATP. Why is fermentation such an important process in cells
Answer:
In humans we go through Lactic Acid Fermination
Explanation:
It is important because after glycolysis we have the elctron carrier NAD+ reduced to NADH and we cant continue glycolysis until we have NADH back to NAD+ so all lactic acid fermintation does it removed the electron and allow glycolysis to continue. It should be noted that fermintation occurs when there is no oxygen / not enough to continue cellular respiration so we rely on glycolysis to produce very little ATP while oxygen is replenished,
Which of the following does NOT indicate a chemical reaction occurred?
A
A gas being produced
B
A solid being formed
C
A change in temperature
D
Temperature staying the same
Answer:
D Temperature Staying The Same
Explanation: Some indicators of a chemical reaction occured are a solid being formed, a flame being formed, a temepature change, a gas being formed, a change in color ect. Temperature staying the same is not one.
What is a biotic factor of a tropical rainforest biome?
O plants
rainfall
soil
O temperature
Answer:
Plants
Explanation:
biotic means living
Plants are the only living thing out of the answer choices
Can you identify the different parts of the water cycle?
The stage of meiosis where the chromosomes do not move apart equally and cause chromosomal abnormalities is
Answer: anaphase
Explanation: Nondisjunction can occur during anaphase of mitosis, meiosis I, or meiosis II. During anaphase, sister chromatids (or homologous chromosomes for meiosis I), will separate and move to opposite poles of the cell, pulled by microtubules
Hope this helps :)
Mary Jane's red hair is a recessive trait. If Peter is heterozygous for hair color, what is the chance their baby will have red hair?
A: 3/4
B: 2/4
C: 1/4
D: 0
A dam created with waste rock from surface mining is called a(n) __________.
A)
interglacial period
B)
valley fill
C)
placer deposit
D)
sanitary landfill
E)
ore deposit
Answer:
i believe it's C
Explanation:
A scientist has been tracking and studying a population of deer in Yellowstone National Park. He surveys the population every six months. Usually, the population is thriving and has a gene pool with a wide variety of traits. But during one six-month period, an event occurred that affected the population, and when the scientist returned, the amount of genetic variation had decreased significantly. Which of the following is most likely the event that occurred to change the population? Yellowstone National Park expanded its borders. A population of wolves was introduced into Yellowstone National Park. The amount of disease in the deer population decreased. More grass and shrubs were planted in Yellowstone National Park.
Answer:
[tex]\boxed {\boxed {\sf B. \ A \ population \ of \ wolves \ was \ introduced \ to \ Yellowstone \ National \ Park }}[/tex]
Explanation:
Let's evaluate each choice. Remember we are looking for an event to decrease the genetic variation and population.
A. Yellowstone expanded its borders
If the park expanded, it's likely the population would increase. There would be more space and resources for the deer.B. A population of wolves was introduced
A wolf is a predator that preys on deer. If they were introduced, they would use the deer as a food source and decrease the population.B seems like a good answer, but let's check the others.
C. The amount of disease in the deer population decreased.
This would help the deer population. Less disease means fewer deaths and a greater population.D. More grass and shrubs were planted in Yellowstone
Deer are herbivores, so grass and shrubs would provide more food. This would keep the deer nourished and healthy, meaning a greater population.The best answer choice is B: A population of wolves was introduced into Yellowstone National Park
Answer:
answer B is correct I just took the test!
The first filial (F1) generation is the result of?
Answer:
F1 is the result of two cross-pollinated parent plants.
Explanation:
So basically, when you cross two true breeding parent plants, then the offspring is known as the F1 generation i believe.
Which sphere of the Earth system includes snowfields, ice caps, and frozen ground?
Would a cross of two
dwarf-height pea plants pro-
duce regular-height offspring?
Hint: Use a Punnett square to
determine the answer
Answer:
no
Explanation:
in the punnet square, your results would be 4 dd. 100% chance of a dwarf sized plant
What is a characteristic that helps a living thing survive and
reproduce in a given environment called?
Answer: An adapation
Explanation:
describe why the marine environment is the least stressful for cells to survive in.
What is medication? Choose all that apply.
a medicine or drug
comes only in tablets
an agent to cure
an aid for diagnosis
Answer:
1,3,and 4
Explanation:
Answer:
1. a medicine or drug
3. an agent to cure
4. an aid for diagnosis
Took the assignment on edge 2021
What is pushing apart North America and Eurasia?
Answer:
The North American and Eurasian Plates are moving away from each other along the line of the Mid Atlantic Ridge. The Ridge extends into the South Atlantic Ocean between the South American and African Plates.
please . help. thank you .
Answer:
The oldest rock layer is letter E and the youngest is letter A
Explanation:
Soil piles on top of each other as time goes on via weather
__are to ribosomes as lipids are to__
A) Sugars; peroxisomes
B) Carbohydrates; rough endoplasmic reticulum
C) Nucleoli; lysosomes
D) Proteins; smooth endoplasmic reticulum
Proteins are to ribosomes as lipids are to smooth endoplasmic reticulum. Details about functions of organelles can be found below.
What are organelles?Organelles are specialized structures in the cells of living organisms that perform specific functions in the cell.
Examples of organelles are as follows:
RibosomeNucleusEndoplasmic reticulumVacuolesMitochondriaHowever, ribosomes are involved in the synthesis of proteins while the smooth endoplasmic reticulum are directly involved in the synthesis of lipids.
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What happens during the first two stages of cellular respiration?
Answer:
Cellular respiration uses energy in glucose to make ATP. Aerobic (“oxygen-using”) respiration occurs in three stages: glycolysis, the Krebs cycle, and electron transport. In glycolysis, glucose is split into two molecules of pyruvate. ... Life first evolved in the absence of oxygen, and glycolysis does not require oxygen.
Explanation:
Got it from Goog|e >.<
Which statement accurately explains the process of gene expression? A DNA is transcribed into RNA, which is translated into protein. B Protein is translated into RNA, which is transcribed into DNA. C RNA is transcribed into protein, which is translated into DNA. D RNA is translated into DNA, which is transcribed into protein.
Answer:
A. DNA is transcribed into RNA, which is translated into protein
Explanation:
The process that accurately explains the process of gene expression is: DNA is transcribed into RNA, which is translated into protein. The correct option is A.
What is gene expression?Gene expression is the procedure by which genetic information is utilized in the biosynthetic pathways of a functional gene product.
This aids in allowing it to produce end products such as protein or non-coding RNA as well as, as a result, affect a phenotype.
Several factors affect gene expression, along with molecules inside the cell, mutations that cause dominant negative effects.
It also cause haploinsufficiency, signaling molecules from neighboring cells and the surrounding environment, and epistasis. Several molecules within the cell influence gene expression.
The following process accurately describes gene expression: DNA is transcribed into RNA, which is then translated into protein.
Thus, the correct option is A.
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In a food chain the flow of energy is Always___.
one-way
reversible
two-way or
uncontrolled
What is the answer for this one?
Answer:
Explanation:lol I n
SOMEONE PLEASE HELP T-T
Research and find a current map of the ocean floor. Considering only a small
portion has currently been mapped, what do you think new maps will look
like? What do you think will be found in the future? Explain your answer below.
Answer:
the new maps will have mountain like ridges and ravines. in the future scientists will find new animals and plants as they go deeper into the sea
I need help on this question
Answer:
B
Explanation:
Because the turtles are testudines.
The answer to the question is A
what is percentage of oxygen of inhaled air
Answer:
21%
I hope this helps!
all of the following contain only glucose exept
Answer:
I didn't understood sorryExplanation:
sorry