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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If a cell has 8 chromosomes at the beginning of mitosis, how many
chromosomes will it have after cytokinesis?
☺️☺️☺️
Answer:
46
Explanation:
What structures are present in an animal cell but not in a plant cell
Which of the following is a safety hazard?
A.
workplace bullying
B.
racial harassment
C.
radiation
D.
stress
E.
confined spaces
Answer: Exposure to very high levels of radiation, such as being close to an atomic blast, can cause acute health effects such as skin burns and acute radiation syndrome (“radiation sickness"). It can also result in long-term health effects such as cancer and cardiovascular disease.
how will CO2 and h20 leave your body after cellular respiration?
PLEASE HELPPP
Which process is responsible for the growth and repair of human tissue? A. Evolution B. Cell division C. germination D. Natural selection
Answer: B- Cell division
Explanation:
The process is called the the healing process. This is consisted of the inflammatory response, repair phase, and remodeling phase. Its gonna be b
what are the chief functions of skeletal system?
Answer: The skeletal system is used to support structure for your body. It's able to give your body shape and also movement to help walk around, and run. It also makes blood cells in your body and form a protection for your organs, storing minerals as well. These are the main functions.
Hope this helps!
According to the table, how likely is it that blue eyes will show up in the offspring from these parents?
25%
50%
0%
100%
Answer:
0%
Explanation:
From the Punnet's square analysis of the cross between GgBb and ggBB, the following are the genotypes and the phenotypes of the offspring:
4 GgBB - solid gray fur and green eyes
4 GgBb - solid gray fur and green eyes
4 ggBB - striped gray fur and green eyes
4 ggBb - striped gray fur and green eyes
The blue eyes phenotype did not show up at all in the offspring. Hence, the probability is 0%.
c. if you begin with one tube of e. coli, how many different types of bacteria do you expect to see in the 4th quadrant?
If we begin with one tube of E. coli, we will only see one type of bacteria in the 4th quadrant, if any type of contamination does not occur.
To observe the colonies of a bacteria in form of quadrants, we need to follow the below-mentioned steps:
To culture bacteria, we need to transfer it to a petri dish.A petri dish is coated with a layer of agar, a jelly-like substance obtained from red algae that helps in culturing bacteria.Then the required bacteria, which is E. coli in our case is collected using a sterile rod and put on the petri dish.After that, the petri dish is heated to increase the growth of bacteria and also to ensure equitable distribution of bacteria in all four quadrants.After following the above-mentioned steps we have to cover the petri dish to avoid contamination and leave it undisturbed for a few days.When we observe the dish after a few days, we will see the bacterial colonies growing in it, as shown in the adjoining image.Thus, if we begin with one tube of E. coli, we will only see one type of bacteria in the 4th quadrant, if any type of contamination does not occur.
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When DNA Is duplicated from mRNA which DNA, mRNA uses a __ nucleotide instead of T.
If the mRNA sequence is GUACUGUAC, what is the DNA Sequence? __
Please and thank you
Answer:
1. When DNA is duplicated from mRNA which DNA, mRNA uses a U nucleotide instead of T.
2. If the mRNA sequence is GUACUGUAC, the DNA Sequence is CATGACATG.
Explanation:
1. The only thing that changes from a DNA sequence to an RNA sequence is that the thymine (T) in DNA is changed to Uracil (U) in RNA.
2. There should be no Uracil (U) in a DNA sequence–– only ATCG. Just matching with the given pairings.
G can transcribed to C.
C can be transcribed to G.
A can be transcribed to T.
U can be transcribed to A.
why is the property of water important to organisms in Aquatic and land habitats?
Answer:
Without a water supply, organisms in aquatic and land habitats will die. Organisms without access of water cannot access oxygen, and as a result of that, they would die. Oxygen is needed for organisms in order to survive. Water also helps insulate the living environment for these organisms.
Problem
What is a likely result of crossing over during meiosis I?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
Decrease in genetic variation
(Choice B)
B
Formation of a zygote
(Choice C)
C
Production of recombinant gametes
(Choice D)
D
Reduction in chromosome number
Answer:
c option
Explanation:
please mark me brainliest
Production of recombinant gametes is a likely result of crossing over during meiosis I.
What is recombination ?
Recombination can be defined as the process where DNA fragments are under go breakage and recombined to generate new allele combinations.
This mechanism will generate genetic diversity at the gene level in which variations in the DNA sequences of various organisms will be reflected.
In the field of heredity, recombination is the process which produce gametes with new allele combinations that were absent in the gametes of previous generations.
one of the type of recombination called Intrachromosomal recombination takes place between independently assorted alleles with loci on distinct chromosomes.
Crossover occur among loci within identical chromosomes in case of intrachromosomal recombination which is essential to keep in mind that recombination takes place during meiosis in both of these situations.
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What is the main function of the endocrine system?
a) to sense the environment
b) to transport materials throughout the body
c) to secrete hormones
d) to break down food into smaller parts
Answer:
c
Explanation:
to secrete hormones.this let the harmones travel to cells in other parts of body.
Answer:
to secrete hormones
What would happen if you did an experiment in which the iodine solution was placed in a baggie, and the starch solution was in the beaker?
If the iodine solution was placed in a baggie and the starch solution was in the beaker, and the baggie was then submerged in the beaker, a specific chemical reaction called the iodine-starch reaction would occur.
The iodine-starch reaction is a well-known test used to detect the presence of starch in a solution. Normally, when iodine solution (iodine dissolved in water) comes into contact with starch, it forms a dark blue or black color complex.
This reaction is due to the formation of an inclusion complex between the iodine molecules and the helical structure of starch.
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2. David is growing algae in a closed bottle for an experiment. The bottle is half full of water and half full of air. David floats the bottle in a pond for three weeks. At the end of the three weeks, David notices that lots of algae grew, but the bottle did not
sink lower in the pond.
Why didn't the bottle of algae get heavier during the experiment?
A. Tiny animals in the bottle ate the growing algae.
B. The sides of the bottle got lighter as the plastic degraded.
C. The bottle has a leak, which made it lose water to the pond.
D. The growth of the algae came from the air and water in the bottle.
Answer:
The answer Is D
Explanation:
The growth of the algae came from the air and water in the bottle.
The statement (D) is correct. The growth of the algae came from the air and water in the bottle.
What is an algae?Algae is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades.
Moreover, algae are photosynthetic creatures. They are neither plant, animal or fungi. Many algae are single celled, however some species are multicellular. Many, but not all of red and brown algae are multicellular.
Therefore, algae are defined as a group of predominantly aquatic, photosynthetic, and nucleus-bearing organisms that lack the true roots, stems, leaves, and specialized multicellular reproductive structures of plants.
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3.
When you skateboard on a ramp,
A sliding friction occurs.
B static friction occurs.
C rolling friction occurs.
D fluid friction occurs.
SOMEONE PLEASE HELP ME WITH THIS I WANT TO PASS THIS TEST
Answer:
C
Explanation:
the mitochondria is the power house of the cell, just like the battery is a "power house" to an electronic
FIRST GETS BRAINLIEST so hurry
Answer:
Your answser should be C
Explanation:
Answer:
c
Explanation:
Where photosynthesis takes place
Photosynthesis
Products
Chloroplasts
Reactants
Glucose
Answer:
I believe it's chloroplast
Explanation
Answer the question please quickly
Answer: i can help you but i need the graph in order to answer it!
BRAINLIEST!!! If you are writing an English essay analyzing 2-3 books should you include quotes from other people if they are relevant to the topic? (Please let me know why you should or shouldn’t do so)
Answer:no
Explanation:
You can use references but using the strait quote without recognition is considered copyright
Which model of speciation describes when a population suddenly evolves quickly, usually in response to new environmental pressures?
The fast evolution model
The gradual speciation model
The change over time model
The punctuated equilibrium model
Answer:
I believe it is A) The fast evolution model
Explanation:
Because
If astronomers discovered a new inner planet in the solar system, which characteristic would it most likely have?
A: large size
B: gaseous composition
C: many moons
D: fast revolution
Answer:
D: fast revolution
Explanation:
As the inner planets rotate around the Sun much faster than the outer ones, the new inner planer would have a fast revolution.
The closer the planet is to the star, the faster is its revolution. Also, the inner planets are smaller, with less density which helps them rotate faster.
Answer: D. fast revolution
Explanation: i just did it
What is a type of active transport which allows small droplets of water into
the cell?
o Facilitated Diffusion
o Pinocytosis
O Exocytosis
o Phagocytosis
which type of mutation causes this translation of error that leads to cystic fibrosis?
Answer:
CF is caused by a mutation in the gene cystic fibrosis transmembrane conductance regulator (CFTR). The most common mutation, ΔF508, is a deletion (Δ signifying deletion) of three nucleotides that results in a loss of the amino acid phenylalanine (F) at the 508th position on the protein.
Josh and his family always rent a beach
house for summer vacation. One
afternoon, Josh and his Dad took the
boat out and when they returned pulled
up their boat on the beach and went in
to have lunch. When they returned, the
beach was covered in water and the
boat was floating offshore. What is a
likely explanation?
Answer:
The tide had probably rolled in and covered the beach with water and had swept the boat away offshore.
(I'm so sorry if this is wrong)
Hope this helps!
Answer:
High Tide
Explanation:
It seems from the question that after they returned, the beach was covered with water, High tide explains it because the tide is at it’s highest point at that time. Since the water is at it’s highest point, the boat was washed away and the beach was covered with water.
Tell me if this is wrong!
Do not add any harmful comments please. You have no right to bully someone who answers questions that you don’t know.
The brain coordinates the __________ to a stimulus. What word completes this sentence?
Different kinds of receptors in the skin and organs are capable of recognizing both internal and exterior inputs. Neurons in the sensory system send this data to the brain.
What are the Sensory system?Assembling sensory neurons create sensory nerves, which pass through the spinal cord to the brain.
The brain and spinal cord make up a person's central nervous system (CNS). When a receptor is activated, a signal travels through the neurons, or nerve cells, to the brain.
The effector receives nerve impulses from the brain, which the brain then uses to coordinate the reaction.
A sensory system is made up of neural networks, sensory neurons (including sensory receptor cells), and brain regions involved in sensory perception.
Therefore, brain coordinates the sensory responses to a stimulus.
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Bromothymol blue (BTB) is a pH indicator that turns yellow in the presence of high levels of carbon dioxide (CO) in water. If BTB is added to a water solution that has high levels of Co, the solution will turn yellow
If it has no CO, the solution with BTB will remain blue
Possible colors of BTB depending of the amount of Co, presenti
ESS
more
Color blue
NO CO, or very low
Color green
Intermediate Co
Color yellow
High Co.
Students are performing an experiment to understand the transfers of carbon between a photosynthetic organism, the aquatic plant Elodea, and a water snail. They are using test tubes that contain the same
amount of water, partially enriched in CO2, and the same amount of BTB, to detect the presence of Co, The test tubes are placed in natural sunlight for the duration of the experiment, as shown in the image. The
contents of each test tube are as follows:
Please help me with this problem
Answer:
A
Explanation:
natural selection favored alleles for light skin in a. south america. b. africa. c. europe. d. australia.
Option C: Natural selection favored alleles for light skin in Europe.
The theory of Natural Selection was firstly expounded by Charles Darwin. It is a key mechanism of evaluation, the change in the heritable traits, and characteristic of a population over a generation.
Natural selection favored alleles for light color skin in Europe because of the well-known correlation between skin pigmentation and distance from the equator. Relethford strongly suggests that natural selection in response to environmental factors plays an important role in the geospatial patterning of human skin pigmentation variation. The lighter level of UVR required to synthesize vitamin D, which is higher in individuals with dark color skin means the region near the equator. The European region does not receive much UVR that's why in Europe alleles of light skin are favored.
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Margo is concerned about her family's bull. They raised him from a calf, always ensuring that he received the proper mineral supplements and giving him the same rations of food since he was young. Recently, though, Margo has noticed that he has put on an unhealthy amount of weight.
Which option describes the probable issue with Margo’s bull in the following scenario?
Available Options are:
He is drinking polluted water.
He is getting too much food.
He has an external parasite.
He suffers from maltreatment
Answer:
He is getting too much food
Explanation:
To have an unhealthy amount of bodyweight implies that Margo is suffering from Obesity. And based on scientific research, Obesity is attributed to the consumption of too much food. This can occur in both humans animal.
Hence, in this case, from the available options, the correct answer is that "He is getting too much food."
Polluted water and external parasites will only cause diseases, hence option A and C are not correct.
Obesity can never result from maltreatment. Hence option D is not correct
Answer:
he is getting too much food!
hope this helps!
Explanation: