The model represents the change in the DNA content of a cell during the cell cycle. Which table shows two steps of DNA replication?
Answer:
The life cycle of eukaryotic cells can generally be divided into four stages and a typical cell cycle is shown in Figure 2.13. When a cell is produced through fertilization or cell division, there is usually a lag before it undergoes DNA synthesis (replication). This lag period is called Gap 1 (G1), and ends with the onset of the DNA synthesis (S) phase, during which each chromosome is replicated. Following replication, there may be another lag, called Gap 2 (G2), before mitosis (M). Cells undergoing meiosis do not usually have a G2 phase. Interphase is as term used to include those phases of the cell cycle excluding mitosis and meiosis. Many variants of this generalized cell cycle also exist. Some cells never leave G1 phase, and are said to enter a permanent, non-dividing stage called G0. On the other hand, some cells undergo many rounds of DNA synthesis (S) without any mitosis or cell division, leading to endoreduplication. Understanding the control of the cell cycle is an active area of research, particularly because of the relationship between cell division and cancer.
Explanation:
The amount of DNA within a cell changes following each of the following events: fertilization, DNA synthesis, mitosis, and meiosis (Fig 2.14). We use “c” to represent the DNA content in a cell, and “n” to represent the number of complete sets of chromosomes. In a gamete (i.e. sperm or egg), the amount of DNA is 1c, and the number of chromosomes is 1n. Upon fertilization, both the DNA content and the number of chromosomes doubles to 2c and 2n, respectively. Following DNA replication, the DNA content doubles again to 4c, but each pair of sister chromatids is still counted as a single chromosome (a replicated chromosome), so the number of chromosomes remains unchanged at 2n. If the cell undergoes mitosis, each daughter cell will return to 2c and 2n, because it will receive half of the DNA, and one of each pair of sister chromatids. In contrast, the 4 cells that come from meiosis of a 2n, 4c cell are each 1c and 1n, since each pair of sister chromatids, and each pair of homologous chromosomes, divides during meiosis.
A microbiologist is in the process of classifying a newly discovered organism. Its characteristics include: · eukaryotic · multicellular · reproduces by spores · motile in some stage of its life cycle · decomposer Which type of organism is it most likely to be? club fungus fungus-like protist plant-like protist sac fungus
Answer:
fungus-like protist
Explanation:
A fungus mostly has those characteristics. Most of them are multicellular eukaryotes -- the exception being yeast, which are unicellular eukaryotes. They can reproduce by spores and are decomposers; they even consume via absorptive feeding!
First, it's definitely not plant-like, as it is a decomposer, and there is no indication that it can produce its own food. It doesn't entirely seem like a fungus either, so the answer is a fungus-like protist.
Answer:
The person above is correct. They should get brainliest.
Explanation:
Edge 2021
help me with a) ples
Which type of mutation causes this translation error that leads to cystic fibrosis? silent missense nonsense deletion
Answer:
The type of mutation that causes this translation error is called deletion. Deletion occurs when a section of a DNA is deleted or lost. In cystic fibrosis, three nucleotides are deleted that results in the lost of phenylalanine.
Explanation:
The mutation is the change in the original nucleotide sequence that can lead to cystic fibrosis. A nonsense mutation occurs in the CFTR gene that terminates the gene sequence early. Thus, option C is correct.
What is a nonsense mutation?A nonsense mutation is a type of mutation in which the nucleotide producing the proteins are terminated early than anticipated. This cause a translational error in the case of cystic fibrosis disorder.
CFTR produces proteins that maintain the translational processes. A stop codon gets inserted in the nonsense mutation between the sequence that leads to abrupt termination of the protein sequence leading to disorder.
Therefore, the nonsense mutation causes the termination error in Cystic fibrosis.
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The complete question is attached to the image below.
Which of the following is not a characteristic of a tetrad?
A. It exists only during meiosis I.
B. It contains two pairs of identical chromatids.
C. It contains a pair of homologous chromosomes.
D. It has only the haploid number of chromosomes.
Answer:
A.it exists only during meiosis 1
which phrase is a result of a scientific law
Answer:
Archimedes' Principle of Buoyancy.
Hooke's Law of Elasticity.
Bernoulli's Law of Fluid Dynamics (Bernoulli's Principle)
Dalton's Law of Partial Pressures.
Fourier's Law of Heat Conduction.
Explanation:
Through advancements, we are now able to classify
organisms into three domains by analyzing the______. Fill in the blank.
Answer:
rRna
Explanation:
Answer:
by analyzing the Ribosomal RNA
Explanation:
took the test :)
How would driving from Boston (near sea level) to summit of Mt. Washington affect the rate of oxygen exchange in your lungs? Explain in 1-2 sentences plz
Answer:
The rate of oxygen exchange in the lungs decreases, outstandingly while diving from Boston (near sea level) to summit of Mt. Washington
Explanation:
At near sea level, Boston, where there is sufficient dense air and plentiful supply of oxygen, the rate of breathing and oxygen exchange in the lungs is at normal levels
At the height of 6,288.2 feet, which is the height of the summit of Mt Washington, the lung does more work to extract the oxygen from the air present which is less dense and contains less oxygen than the air at sea level such that a larger volume of air is required to supply the amount of oxygen the body requires
Therefore, the rate of oxygen exchange in the lungs decreases, outstandingly while diving from Boston (near sea level) to summit of Mt. Washington.
A 6 year old male suffered a fracture after falling off the monkey bars at school. He fell on an outstretched hand and suffered a transcondylar fracture of the left humerus. After prep and drape, a manipulation was done to achieve anatomic reduction. Once the joint was adequately reduced, pins were placed through the skin distally and originally into the bone to maintain excellent fixation and anatomic reduction. The pins were bent, trimmed and covered with a sterile dressing and a posterior splint was placed on the patient's arm. What CPT code is reported?
Answer:
24538-LT
Explanation:
Cpt means Current procedural Terminology, they are codes formed by the American association of Doctors and are used for reports on medical procedures, diagnosis, surgeries procedures and for entities service.
They are also important in electronic billing because the code together with numerical diagnostic coding is used to generate medical bills used for payment.
24538-LT It is a code for fracture or dislocation of the upper and lower arm agreed upon and uses by the Association of Doctors. It is used for medical procedures and surgeries of fracture of the humerus.
Complete the following paragraph selecting words from the list below. Pollination is the transfer of ……. from the ……..to the …….in a flower. In cross-pollination, the ……. from a flower on one …….is transferred to the …….of another ……. of the same species. (7 marks)
Anthers, ovule, stigma, plant, flower, pollen, ovary, petal, style, receptacle, stamens
Answer:
pollen grain from the stigma
cross pollination -transfer of pollen grain from one flower to the other but of the same kind
Describe the organization of the solar system. Include:
A. the planet names, in order,
B. the different divisions, or categories, of the planets, and
C. why they are categorized in this way.
Answer:
1. Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune and dwarf pluto
2. categories of classification when determining the type of celestial body an object is these classifications are terrestrial planets, gas giants, ice Giants and dwarf planets
3. sorry I don't know this one
Which muscle is highlighted below?
O A. Obliques
O B. Latissimus dorsi
O C. Biceps brachii
O D. Rectus abdominus
Answer:
C: Biceps Brachii
Explanation:
Obliques are your muscles on the side of your back that control lateral movement, latissimus dorsi are back muscles that mainly help with any motion of your back, Biceps are the muscles on your forearm, pictured in the diagram, and rectus abdominus are your abs that help with abdominal movement and helps in breathing and the compression of the abdominal viscera.
The muscle highlighted is biceps brachii.
What is muscle?"A band or bundle of fibrous tissue in a human or animal body that has the ability to contract, producing movement in or maintaining the position of parts of the body."It is of three types: skeletal muscle, smooth muscle and cardiac muscle.Skeletal muscles are striated, voluntary muscle. They connects bones, tendons and ligaments. They helps in movement.Smooth muscles are striated, involuntary muscle. They line organs and provide protection.Cardiac muscle are nonstriated, involuntary muscle present in heart.What is biceps brachii?"It is a muscle that is present on the ventral portion of the upper arm."It helps in flexes and supination of forearm.
Hence, the correct option is C. Biceps brachii.
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Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. What is the probability of having offspring that have wrinkled seeds and yellow seed color for the cross RRYY ´ RrYy?
Answer:
The probability of a cross between RRYY x RrYy to generate a yellow and wrinkled seed offspring is 0%.Explanation:
Circular and yellow seeds are overwhelming and wrinkled and green seeds are passive. It is vital to keep in mind that resective characteristics are as it were displayed when the sibling has two passive alleles for those characteristic, in the event that the descendant includes a latent allele and a overwhelming allele, the characteristic that will be presented is the overwhelming one. For this reason, able to say that a cross between RRYY x RrYy plants, would not create any descendant with wrinkled and yellow seeds. Typically since, the descendant of a crossing, must show an allele of each parent. One parent as it were has overwhelming alleles (RRYY), so able to say that all descendant will get 1 overwhelming allele for color and a overwhelming allele for seed surface, anticipating the sibling from communicating latent characteristics.
Answer:
0%
Explanation:
Edge
What is the outcome of genes being incomplete
___ c The volume of blood that flows into the aorta with each heart beat is the stroke volume. Martha's stroke volume is 50 cm3 . The cardiac output is the amount of blood that flows into the aorta each minute. Calculate Martha's cardiac output in cm3 /min. Show your w
Answer and explanation:
For the cardiac output to be calculated, there are two variables needed: stroke volume and heart rate.
Stroke Volume x Heart Rate = Cardiac Output
A normal heart rate for a healthy person that is relaxing, should be between 60 and 100 beats per minute.
If we were to assume that Martha has an average heart rate of 80 beats per minute (bpm)...
50 cm3 x 80 beats per minute = 4000 cm3/min
This means that Martha's cardiac output is 4000 cm3 (4 liters) per minute. This is the amount of blood that is pumped by the heart into the aorta in a minute.
This is only an assumption since Martha's heart rate hasn't been given in the question. If her heart rate were to be 60 bpm, the cardiac output would then be 3000 cm3/min. With a heart rate of 100 bpm, the cardiac output should be 5000 cm3/min.
the stalk of a leaf
Answer:
petiole
Explanation:
Answer:
petiole
Explanation:
How does a worker bee develop a queen out of the larva stage?
Answer:
New virgin queens develop in enlarged cells through differential feeding of royal jelly by workers. When the existing queen ages or dies or the colony becomes very large, a new queen is raised by the worker bees. When the hive is too large, the old queen will take half the colony with her in a swarm.
Explanation:
What does Electronegativity mean in regards to
elements? How does electronegativity influence the
molecule's chemical property?
Help :(
Answer:
it is the ability of attracting other molecules this effect the properties by what it is going to bond to. like say it is 6 and another 2 they will be more likely too bond to one another to make a valence of 8.
Explanation:
What are the polymers of nucleic acids called
Explanation:
Nucleic acids are polymers of individual nucleotide monomers. Each nucleotide is composed of three parts: a 5-carbon sugar, a phosphate group, and a nitrogenous base. Only two 5-carbon sugars are found in nature: ribose and deoxyribose.
Answer:
nucleotides
Explanation:
a nucleic acid is made up of chains of nucleotides
what kinds of bacteria are spherical, endospores,cocci, bacilli, spirilla
The cocci kind of bacteria are spherical in shape. Rod-shaped bacteria are bacilli, and spiral-shaped bacteria are called spirilla. Thus, the correct option is C.
What are the cocci bacteria?A coccus or cocci bacteria is any bacterium or archaeon which has a spherical, ovoid, or generally a round shape. Bacteria are categorized into different classes on the basis of their shapes into three classes which are cocci (spherical-shaped bacteria), bacillus (rod-shaped bacteria) and spiral (two types: spirillum and spirochete bacteria).
Different classes and examples of bacteria are Streptococci, in which cocci are arranged in chains. Example: Streptococcus mutans. Diplococci, in this cocci are arranged in pairs. Example: Neisseria gonorrhoeae. Monococci are single cocci. Staphylococci are the clusters of cocci. Example: Staphylococcus aureus.
Therefore, the correct option is C.
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Liverworts are _______ plants with flattened, leaf-like bodies.
A. Rooted
B. Rootless
1 2 3 4 5 6 7 8 9 10
TIME REMAINING
52:11
Environmental factors can influence natural selection because they can increase or decrease
the number of chromosomes in an individual.
the number of chromosomes in a population.
the amount of genetic variation in an individual.
the amount of genetic variation in a population.
Answer:
49 sec
because you have never seemed yet 59 hour instead 12 hour.
but 24 hour also.
The "three R's" describe an infant or toddler's
A. angry reactions to other children.
B. verbal responses to adults.
C. general interactions with others.
D. reaction to physical abuse by another child.
Answer:
C. general interactions with others.
Explanation:
The "three R's" refers to Respective, Responsive, Reciprocal. These three things are necessary for better growth and education of the child. The "three R's" are very important because the main focus of these "three R's" is to know the method that how the children learn different things. The teacher or parents should respectful while interact with the child. Being gentle is also a form of giving respect to the child. Always give response on the action made by the child.
ASAP PLZZ Using your knowledge of macromolecules, create a well balanced meal you would recommend for an athlete. You must include why you chose each ingredient by justifying how it would affect homeostasis of the athlete.(5-7 sentences) Your answer:
Answer:
Meats, legumes and dairy products are the foods that is recommended for athlete.
Explanation:
Athlete needs high amount of energy which can be gained from the consumption of macro-molecules such as proteins and fats. Meats, legumes and dairy products contains enough amount of proteins and fats which helps in providing energy and maintaining health of an athlete. Fats in high amount is not good for both athlete and normal human because it contains very high amount of energy. These food also maintain homeostasis of the body by providing enough energy.
The codon shows how different combinations of mRNA nucleotides code for various amino acids what two amino acids are coded for by an mRNA segment reading GAG GAC
Answer:
Glutamic acid and Aspartic acid.
Explanation:
Using the information obtained from a genetic code chart (an example can be seen in the attached image), the mRNA codon GAG translates to an amino acid named Glutamic acid while the mRNA GAC translates to an amino acid named Aspartic acid.
Hence, the two amino acids are coded for by an mRNA segment reading GAG GAC are Glutamic acid and Aspartic acid respectively.
Eukaryotic cells tend to be 10-1,000 times larger than prokaryotic cells, which it means that it takes much longer for molecules to diffuse from one side of the cell to the other (just as getting across a large warehouse takes longer than getting across a small room). However, biological processes happen just as quickly in eukaryotic cells as they do in prokaryotic cells.
From the choices below, which reason best explains why biological processes in eukaryotic cells happen just as quickly as in prokaryotic cells, despite being so much larger?
The reactants and enzymes required for a particular biological process are concentrated in a particular organelle.
The reactants and enzymes required for a particular biological process are distributed randomly throughout the eukaryotic cell.
unanswered
If we remove a process that occurs in an organelle and have that biological process happen in the cytoplasm of a eukaryotic cell instead, would you predict it would occur:
faster
slower
at the same speed
Answer:
The reactants and enzymes required for a particular biological process are concentrated in a particular organelle.
Slower
Explanation:
Enzymes are usually localized in organelles to make it easier for cellular processes to occur. Enzymes are NOT randomly distributed in the cell. Each organelle is capable of a specific function and uses specific enzymes to do these processes. Enzymes are very specific and only work for certain organelles, so they are appropriately distributed throughout cells to ensure biological processes can proceed appropriately. This is also why processes would run slower if they were just in the cytoplasm, because organelles have reactant-specific enzymes to do certain biological processes, which cannot be effectively done in the cytoplasm in the cell.
Which characteristic is shared by all arthropod
Answer:
All arthropods have an exoskeleton.
Explanation:
Answer:
Exoskeletons made of chitin. Highly developed sense organs. Jointed limbs (the limbs must be jointed like the joints in a suit of armor, since the exoskeleton is rigid and cannot bend to allow movement)
Describe the coastline and the features of the Pacific Ocean
Answer:
Coastline has lots of beaches and is an area for breeding for many sea animals.
Explanation:
idk
Whate is a cell
plz answer fast
Answer:
A cell is the smallest unit of a living organism
Explanation:
Just as an atom is described as the smallest unit if any substance, a cell is defined as the smallest, basic unit of any living organism.
This means that in order for something to be considered an organism, it has to contain, at least, a cell. Such organism with a single cell is referred to as a unicellular organism.
There are several organisms with more than one cell. Such organisms are said to be multicellular. Multicellular organisms often have their cells organized into tissues, organs, and or systems in order to function efficiently and maximally.
Cells can be of different types based on their level of complexity. The simple cells that do not have nucleus nor membrane-bound organelles are referred to as prokaryotic cells while the ones with complex structures with a nucleus and membrane-bound organelles are known as eukaryotic cells.
Question 4 of 10
2 Points
Which factor helps determine the fertility rate of a group of people?
O A. Death rate
B. Education
O c. Consumption rate
D. Farmland
SUBMIT
Answer:
education
Explanation:
