Answer: Replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. 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. Several enzymes and proteins then work together to prepare, or prime, the strands for duplication. Finally, a special enzyme called DNA polymerase organizes the assembly of the new DNA strands. The following description of this three-stage process applies generally to all cells, but specific variations within the process may occur depending on organism and cell type.
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Answer:
QUESTION:
ANSWER:
Replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. DNA replication is one of the most basic processes that occurs within a cell. Each time a cell divides, the two resulting daughter cells must contain exactly the same genetic information, or DNA, like the parent cell. To accomplish this, each strand of existing DNA acts as a template for replication.
The initiation of DNA replication occurs in two steps. First, a so-called initiator protein unwinds a short stretch of the DNA double helix. Then, a protein known as helicase attaches to and breaks apart the hydrogen bonds between the bases on the DNA strands, thereby pulling apart the two strands. As the helicase moves along the DNA molecule, it continues breaking these hydrogen bonds and separating the two polynucleotide chains
Meanwhile, as the helicase separates the strands, another enzyme called primase briefly attaches to each strand and assembles a foundation at which replication can begin. This foundation is a short stretch of nucleotides called a primer
After the primer is in place on a single, unwound polynucleotide strand, DNA polymerase wraps itself around that strand, and it attaches new nucleotides to the exposed nitrogenous bases. In this way, the polymerase assembles a new DNA strand on top of the existing one
Explanation:
A lot more than just 200 words sorry.
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please help me with my science will give brainlest help asap 2 question, please dont answer just for points :(
Answer:
1. 50cm
2. Direct
Explanation:
1. The distance pulled back means you get your answer from the distance pulled back data. Since 50cm is the largest of your given data, that makes the cart go farthest.
2. The farther you pull the band back, the farther the cart will go. Since both increase when you increase the distance you pull the band back, this is a direct relationship.
Which of the following best describes where life is found around the world and why we find certain animals on certain continents and islands?
Question 4 options:
Fossils
Carbon Flow Dynamics
DNA sequences
Biogeography
Answer:
biogeography is the answer
How many ATP molecules are made with each glucose in the Krebs?
A. 1
B. 2
C. 4
D. 38
E. 100
Answer:
B. 2
Explanation:
Because for each glucose molecule there are two pyruvic acid molecules entering the system, two ATP molecules are formed.
Hey guys I'm having some trouble with a few living environment questions
Explanation:
guessing
amino acid?
protein building blocks
peptide bonds hold them together
mutations in dna may or may not result in a change in the phenotype of an organism. in which of the following situations will a mutation appear in the phenotype of an individual
The type of mutation which may not result in any chage to the penotype of an organsim is called a silent mutation.
What are mutations?Mutations refers to the changes that occur in the DNA of an individual organism. These chages may or may not change the appearance (phenotype) of the orgamsim.
The type of mutation which may not result in any chage to the penotype of an organsim is called a silent mutation.
Learn more about mutation:https://brainly.com/question/365923
List 4 characteristics of Animals.
Answer:
animals
Explanation:
The Animal Kingdom
Animals are multicellular.
Animals are heterotrophic, obtaining their energy by consuming energy-releasing food substances.
Animals typically reproduce sexually.
Animals are made up of cells that do not have cell walls.
Animals are capable of motion in some stage of their lives.
How does nondisjunction affect the production of gametes?
Answer:
Nondisjunction Produces Abnormal Gametes. If nondisjunction occurs during anaphase I of meiosis I, this means that at least one pair of homologous chromosomes did not separate. The end result is two cells that have an extra copy of one chromosome and two cells that are missing that chromosome. Click to see full answer.
Explanation:
I need help please :(
the correct option is :
A. Some energy is lost to the environment as heat, some is used for reproduction, movement and growth of organisms at that level.
only 10 % of energy that the organism get is transferred to the next trophic level.
i need help with #8, #10 please! whoever helps me, ill give brainliest <3
Can someone tell me if this is correct
Answer:
Yes you are correct
Explanation:
NO SCAM FILES!!! Hey! i need help! Can you help me with this?? 30 points and brainlest!
For each scenario below, list the body systems involved and their function during the specific activity.
Regulation / Homeostasis
You get too hot or too cold:
Your diaphragm expands and contracts so you can breathe:
Nutrient Absorption
The reactants needed for cellular respiration are taken in and transported to your cells:
Defense from Illness
A pathogen enters your body through a cut:
Defense from Injury
A bunny is running away from a wolf:
Your hand gets too close to a flame:
Reproduction
A woman’s body prepares for a pregnancy:
A woman’s body prepares for a birth:
Answer:
Regulation / Homeostasis you get too hot or too cold:
If you get either too hot or too cold, sensors in the periphery and the brain tell the temperature regulation center of your brain—in a region called the hypothalamus—that your temperature has strayed from its set point.
Your diaphragm expands and contracts so you can breathe:
When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it. The muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale.
Nutrient Absorption
The reactants needed for cellular respiration are taken in and transported to your cells:
cellular respiration requires oxygen and releases carbon dioxide. It is the released oxygen that is used by us and most other organisms for cellular respiration. We breathe in that oxygen, which is carried through our blood to all our cells.
Defense from Illness
A pathogen enters your body through a cut:
The skin and mucous membranes act as a physical barrier preventing penetration by microbes. If the skin is cut then the blood produces a clot which seals the wound and prevents microbes from entering.
Defense from Injury
A bunny is running away from a wolf:
Rabbits have keen senses of smell, sight and hearing, which help them defend themselves from danger. When they sense a nearby predator, they innately freeze in place to camouflage with the landscape.
Your hand gets too close to a flame:
Skin is difficult to ignite, and usually chars in the presence of heat. It takes up to 10 minutes of direct flame for skin to crack open and start leaking out rendered fat. Even if a horse's body started to leak fat, it would be unlikely to go up in flames on its own.
Reproduction
A woman’s body prepares for a pregnancy:
Every month, usually one egg grows within a structure called the egg follicle (a fluid filled sac that nourishes the egg). The follicle produces estrogen, which helps a woman's body prepare for pregnancy by growing a new lining for the uterus.
A woman’s body prepares for a birth:
As your body prepares for birth, your cervix — the muscular ring between your uterus and vagina — begins to soften, dislodging the mucous plug.
Please Help I will Mark Branliest for first answer Please
Answer:
to break down waste and worn-out cell parts
Explanation:
If there is 20% T bases in a DNA sequence, what percentage of A would there be in the same sequence? 10% 20% 30% 40%
Answer:
i believe 20% because T base only connects with A base and vise versa. sorry if i am wrong!
Explanation:
How does air pollution affect human health?
a. Respiratory infections
b. Lung Cancer
c. Asthma
d. All of the Above
Answer:
The answer for this question is D
How can independent assortment help explain genetic diversity in humans? Hint: How many pairs of chromosomes are in a human diploid cell?
Answer:
please give me brainlist and follow
Explanation:
Independent assortment states that all alleles are inherited independently of other alleles. This helps diversity because it helps to further the randomization of traits. If traits were always inherited together, as a "package deal", there would naturally be less diversity than the situation that exists.
During a study session about evolution, one of your fellow students remarks "The giraffe stretched its neck while reaching for higher leaves, its offspring inherited longer necks as a result, which statement is most likely to be helpful in correcting this students misconception?
a) characteristics acquired during an organisms life are generally not passed on through genes
b) spontaneous mutations can result in the appearance of new traits
c) only favorable adaptations of survival value
d) disuse of an organ may lead to its eventual disappearance
Answer: Characteristics acquired during an organism's life are generally not passed on through genes.
Explanation:
The most common misconception between students which can be corrected is that the characteristics acquired during an organisms life are generally not passed on through the genes. Thus, the correct option is A.
What are acquired traits?Acquired traits or characteristics are the non-heritable changes in the function or structure of a living organism which is caused after birth and was absent before this. Occurrence of acquired traits could be due to disease, injury, accident, deliberate modification, variation, repeated use, or other environmental influence.
For example, the giraffe stretched its neck while reaching for the higher leaves but her children does not get a long neck by birth however this character has been fixed with time because of the repeated use of the neck for food.
Therefore, the correct option is A.
Learn more about Traits here:
https://brainly.com/question/24886772
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GIVING BRAINLIEST!!!!
Which of the following best describes how a climate change affects the organisms in a certain environment?
They might have more resources that help them survive.
The will move to a new location where resources are available.
They will struggle to survive due to reduced space.
They might adapt, move to new place, or struggle to survive.
Answer:
They might adapt, move to new place, or struggle to survive.
Explanation:
The poachers might tear down their home and the food or homes that was once there isnt anymore. Therefore they have to move to a new home to fit their needs.
Answer:
i think it would be they might adapt move to a new place or struggle to survive
What is the process of the digestive system?
Answer:
In terms of processes: ingestion, motility, mechanical digestion, chemical digestion, absorption, and defecation.
In terms of pathway: Mouth, throat, esophagus, stomach, small intestine, large intestine, rectum, and finally the anus.
can someone plzz help me on this question its hard :( and i want to pass
Answer: A
Explanation:
Your welcome
Exhaust from motor vehicles is the number one cause of what?
carbon monoxide pollution
acid rain
mercury poisoning
sulfur dioxide pollution
Answer:
A. Carbon monoxide pollution
Answer: Motor vehicle exhaust is the most common factor leading to carbon monoxide poisoning
Explanation: People drive every day to go do daily activities, while driving is an efficient way of traveling long distances quickly, it runs off of fossil fuels which the waste product of is horrible for the environment.
During the water cycle, water moves from the air to the ground and then back to the air. Which of the following processes causes water to move from Earth’s surface to the atmosphere during the water cycle?
A.
precipitation
B.
evaporation
C.
condensation
D.
crystallization
Answer:
B-Evaporation
Explanation:
I had it on study island and got It correct :)
Please no links they are not working
Which climate experiences the greatest range in temperature?
A. Taiga
B. Desert
C. Tropical Rainforest
D. Desert and Taiga
Answer:
C!
Hoped this helped! <3
please help with this biology question!
Answer:
mito
Explanation:
Answer: mitochondria
Explanation: don't have mitochondria for energy production, so they must rely on their immediate environment to obtain usable energy
Why are stem cells used widely now, as opposed to cloning?
Explanation:
short hair for the cover sails type of human embryonic stem cells is not widely recognized how we're not in Umbria
1- how can prokaryotes be used by humans/professionals?
2- how can eukaryotes be used by humans/professionals?
3- how can digestive system be used by professionals?
Answer: 1 Fermentation processes, such as brewing, baking, and cheese and butter manufacturing. Chemical manufacturing, such as the production of ethanol, acetone, organic acids, enzymes, and perfumes. Pharmaceuticals, such as the manufacture of antibiotics, vaccines, and steroids. Energy, in the form of biogas (methane)
2 Despite the fact that we have gobs of prokaryotic cells living inside and on us, humans are still categorically eukaryotic organisms. This means that all human cells—including those found in the brain, the heart, the muscles, and so on—are also eukaryotic.
3 Digestion works by moving food through the GI tract. Digestion begins in the mouth with chewing and ends in the small intestine. As food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules.
Explanation:
If you find a fossil in two different locations and it has featured in common with dinosaurs and modern birds, how does this support the evolutionary theory?
a) the two species must not be related
b) looking at the fossils, they show similarities both physically and in their DNA that don't appear to change much over time
c) dinosaurs must have evolved from mammals because their bones are similar in size rather than birds
d) the land must have been together at one point where these two species interbred to share a common ancestor
PLEASE HELPPP ASAP!!!
1. List all of the omnivores in this food web
2. List all the herbivores and this food web
3. List all the producers in this food web
Answer:
omnivores: Birds, Toad, Skunk, Red fox, Wolf, Bear
herbivores: Bees, Deer, Mice, Rabbit, Insects
producers: blossoms, nuts, bark, leaves, blossoms
A carbon footprint is a measure of the amount of carbon human activities, like using energy, release into the atmosphere. Which activity would help decrease the greatest carbon-releasing activity in US homes? limiting time in hot showers wearing layers of clothing turning off lights when leaving a room unplugging electronics when not in use
Answer: unplugging electronics when not in use
Explanation:
Carbon footprint is the measure of the amount of carbon liberated into the atmosphere due to human oriented activities like burning of fossil fuels, deforestation, liberation of toxic gases including carbon monoxide and carbon dioxide into the atmosphere by the factors and automobile vehicles. To stop the carbon releasing activity in US homes one must unplug the electronic not in use because electronics consume a lot of electrical energy every day this electrical energy comes from thermal power plants which typically use coal to harness energy the combustion of the coal liberates carbon dioxide and carbon monoxide in the environment so creating pollution and increases the carbon footprint. Little will be the usage of electricity little will be the burning of coal and it will decrease the carbon footprint.
Answer:oml people just be sayin anything these days the real answer is B
Explanation:
State one way by which Carbon Dioxide decreases in the atmosphere
Answer:
The early atmosphere was mainly carbon dioxide and water vapour. Water vapour condensed to form the oceans. Photosynthesis caused the amount of carbon dioxide to decrease and oxygen to increase.
Hope it helps!!!
Why is the success of a mutation dependent on environmental conditions?
PLEASE HELP QUICK!!!
