What is the function of the connector proteins? They link the leading strand DNA polymerase and the lagging strand DNA polymerase together. They enable one parental DNA strand and one newly synthesized DNA strand to be held together. They allow DNA synthesis to occur in the 3’ to 5’ direction.
What is the function of the connector proteins in DNA?
DNA is flexible. What is the function of the connector proteins? They enable one parental DNA strand and one newly synthesized DNA strand to be held together. They link the leading strand DNA polymerase and the lagging strand DNA polymerase together.
What are the functions of proteins?
You can think of a protein as a string of beads in which each bead is an amino acid. There are 20 amino acids that help form the thousands of different proteins in your body. Proteins do most of their work in the cell and perform various jobs. Here are 9 important functions of protein in your body. 1. Growth and Maintenance
What are the functions of fibrous proteins?
A class of proteins known as fibrous proteins provide various parts of your body with structure, strength and elasticity. 5. Maintains Proper pH Protein plays a vital role in regulating the concentrations of acids and bases in your blood and other bodily fluids ( 16, 17 ). The balance between acids and bases is measured using the pH scale.
Why is the shape of a protein important?
This shape is very important as it will determine the protein’s function (e.g. muscle or enzyme). Every species, including humans, has its own characteristic proteins. Amino acids are classified as either essential or non-essential. As the name suggests, essential amino acids cannot be produced by the body and therefore must come from our diet.
Which DNA strand is synthesized continuously?
The leading strandThe leading strand is synthesized continuously, as shown in Figure 5. In contrast, the lagging strand is synthesized in small, separate fragments that are eventually joined together to form a complete, newly copied strand.
What is the function of conjugation carries the chromosome of F plasmid it pulls the F+ and F cells and F cells and it converts f cells into F+ cells?
What is the function of the conjugation pilus? It pulls the F+ and F- cells together.
What characteristic of DNA allows two connected DNA polymerase to synthesize both the leading and lagging strand?
What characteristic of DNA allows two connected DNA polymerases to synthesize both the leading and lagging strands? DNA is flexible.
Which enzyme breaks the hydrogen bonds during replication?
DNA helicaseDNA helicase continues to unwind the DNA forming a structure called the replication fork, which is named for the forked appearance of the two strands of DNA as they are unzipped apart. The process of breaking the hydrogen bonds between the nucleotide base pairs in double-stranded DNA requires energy.
What is the purpose of conjugation?
Conjugation is the process by which one bacterium transfers genetic material to another through direct contact. During conjugation, one bacterium serves as the donor of the genetic material, and the other serves as the recipient. The donor bacterium carries a DNA sequence called the fertility factor, or F-factor.
What is bacterial conjugation and what is the significance of plasmids with respect to conjugation?
Bacterial conjugation enables a bacterium to donate a plasmid containing genes that encode proteins responsible for resistance to an antibiotic. These genes are calledresistance factors.
Which protein joins together the Okazaki fragments of DNA in the lagging strand?
Which protein joins together the Okazaki fragments of DNA in the lagging strand? DNA ligase joins the Okazaki fragments in the lagging strand, turning it into a continuous strand. Because the two strands of original or parental DNA run in opposite directions, the new strands must be made in different ways.
What binds to the DNA strands to keep them separated?
Proteins called single-strand binding proteins coat the separated strands of DNA near the replication fork, keeping them from coming back together into a double helix.
What enzyme joins the DNA strands after replication?
DNA ligase is a DNA-joining enzyme. If two pieces of DNA have matching ends, ligase can link them to form a single, unbroken molecule of DNA. In DNA cloning, restriction enzymes and DNA ligase are used to insert genes and other pieces of DNA into plasmids.
What is the enzyme that separates the two strands of DNA?
helicaseThe two strands of DNA have to be temporarily separated from each other; this job is done by a special enzyme, helicase, that helps unwind and separate the DNA helices (Figure 4).
What is the role of hydrogen bonding in DNA replication?
As the strands continue to unwind and separate in both directions around the entire DNA molecule, the hydrogen bonding of free DNA nucleotides with those on each parent strand produce new complementary strands.
What enzyme is responsible for splitting the two strands?
DNA HelicaseDNA Helicase The enzyme responsible for separating the two strands of DNA in a helix so that they can be copied during DNA replication.
What are the proteins that make up the connective tissue?
Some proteins are fibrous and provide cells and tissues with stiffness and rigidity. These proteins include keratin, collagen and elastin, which help form the connective framework of certain structures in your body ( 13. Trusted Source. ). Keratin is a structural protein that is found in your skin, hair and nails.
Why are proteins important to the body?
Protein has many roles in your body. It helps repair and build your body’s tissues, allows metabolic reactions to take place and coordinates bodily functions. In addition to providing your body with a structural framework, proteins also maintain proper pH and fluid balance.
What are proteins made of?
They’re made and secreted by endocrine tissues or glands and then transported in your blood to their target tissues or organs where they bind to protein receptors on the cell surface.
How many calories are in a gram of protein?
Protein contains four calories per gram, the same amount of energy that carbs provide. Fats supply the most energy, at nine calories per gram. However, the last thing your body wants to use for energy is protein since this valuable nutrient is widely used throughout your body.
How many amino acids are in a protein?
You can think of a protein as a string of beads in which each bead is an amino acid. There are 20 amino acids that help form the thousands of different proteins in your body. Proteins do most of their work in the cell and perform various jobs.
Why do we need protein?
Your body needs protein for growth and maintenance of tissues. Yet, your body’s proteins are in a constant state of turnover. Under normal circumstances, your body breaks down the same amount of protein that it uses to build and repair tissues.
Which protein carries oxygen from the lungs to the body?
For example, hemoglobin is a protein that carries oxygen from your lungs to body tissues. Glucose transporters (GLUT) move glucose to your cells, while lipoproteins transport cholesterol and other fats in your blood.
What is the function of connector proteins?
What is the function of the connector proteins? They link the leading strand DNA polymerase and the lagging strand DNA polymerase together. They enable one parental DNA strand and one newly synthesized DNA strand to be held together. They allow DNA synthesis to occur in the 3’ to 5’ direction. They produce the Okazaki fragments.
How do stabilizing proteins work on DNA?
How do stabilizing proteins work on the DNA? They form the replication fork. They bind to the single-stranded DNA. They bind to the double-stranded DNA. They use ATP to break the hydrogen bonds.
What would happen if the mRNA codon that coded for Cys was mutated in the third?
What would happen if the mRNA codon that coded for Cys was mutated in the third position from a U to an A? The amino acid Cys would still be coded. The codon would now code for Trp instead of Cys. A stop codon would be introduced prematurely.
When is the repressor protein transcribed?
When is the repressor protein transcribed? It is always transcribed. Only in the presence of tryptophan Only in the absence of tryptophan
When the cell is not in the presence of tryptophan, RNA polymerase can transcribe?
When the cell is NOT in the presence of tryptophan, RNA polymerase can transcribe mRNA. the repressor proteins bind to the operator. structural genes are not transcribed. the repressor proteins are active.
Why is the DNA synthesis of the lagging strand considered discontinuous?
Why is the DNA synthesis of the lagging strand considered discontinuous? The synthesis is moving in the opposite direction from the replication fork. The lagging strand only produces single-stranded DNA molecules. The lagging strand only requires one primer instead of multiple primers. DNA synthesis on the lagging strand occurs 3’ to 5’.
What is the function of the parental DNA in replication?
What is the function of the parental DNA in replication? It allows for the DNA to be circular. It gives the cell two complete copies of the DNA. It serves as the template for DNA replication. It is passed into the offspring of the parent.
