What Is A Function Of The Enzyme Indicated By Structure A??
What is a function of the enzyme indicated by structure A? Structure A is the enzyme helicase which untwists the DNA helix and breaks bonds between the complementary nucleotides of the two parental (“old”) DNA strands.
What is the function of the structures at D?
What is the function of the structures at D? Nuclear pores allow ribosomes mRNA and many other large molecules to pass but contain the DNA within the nucleus.
What is the process indicated by C?
What process is indicated by C? The event indicated by C includes the fusion of a secretory vesicle with the plasma membrane and the subsequent release of the vesicle contents to the extracellular space.
What must happen before a body cell can begin mitotic cell division?
What must happen before a body cell can begin mitotic cell division? It’s DNA must be replicated exactly so that identical copies of the cell’s genes can be passed on to each of its offspring.
What process allows for the production of molecule B from a template consisting of molecule A quizlet?
What is structure and function?
How cell structure relates to its function?
A cell’s structure and function are related to one another. The shape and size of a cell help determine its specific function in our body. For example the structure of the nerve cell is long and thin because it functions to relay electrical messages all over the body.
What does the small circular structure indicated by the letter C represent quizlet?
What does the small circular structure indicated by the letter C represent? The mitochondria each have a small circular DNA chromosome that contains genes for several mitochondrial proteins. These proteins are translated within the mitochondria (on the ribosomes indicated by the small red dots).
What is the big difference between passive and active transport is indicated by their names?
Passive transport doesn’t require energy (ATP) active transport does require energy. Passive transport moves molecules WITH the concentration gradient (high to low) while active transport moves molecules AGAINST the concentration gradient (Low to High).
Which structure is responsible for the passage of materials into and out of the cell?
Cell membrane
Cell membrane It maintains the integrity of a cell and controls passage of materials into and out of the cell. All materials within a cell must have access to the cell membrane (the cell’s boundary) for the needed exchange. The cell membrane is a double layer of phospholipid molecules.
What is the specific role of enzyme indicated by B during the formation of the new DNA strands?
What is the specific role of the enzyme indicated by B during the formation of the new DNA strands? DNA polymerase catalyzes formation of bonds between sugar groups and phosphate groups that link the DNA nucleotides together.
Which of the following correctly describes the structure of the plasma membrane?
Of the above answer choices the statement that correctly describes the structural organization of the cell membrane is B. A bilayer of phospholipid…
Does each daughter cell resulting from mitotic cell division?
What process allows for the production of mRNA from a template consisting of DNA?
mRNA is “messenger” RNA. mRNA is synthesized in the nucleus using the nucleotide sequence of DNA as a template. This process requires nucleotide triphosphates as substrates and is catalyzed by the enzyme RNA polymerase II. The process of making mRNA from DNA is called transcription and it occurs in the nucleus.
What cellular process occurs on the Infolded membranes shown at B?
What cellular process occurs on the infolded membranes shown at B? The folded membranes that comprise the cristae and the gel-like fluid between them (the matrix) are the locations of cellular respiration.
Which of the following is a function of a plasma membrane protein?
The plasma membrane is the boundary of a living cell composed of mainly a lipid bilayer with integral proteins which helps in protecting the cell from outside and provides the window to interact in a regulated way with the outer environment.
What are the three functions of a structure?
Structures within cells have individual functions and in general no matter the structure these can be reduced to three essential jobs: A physical interface or boundary with specific molecules a systematic means of shuttling chemicals into along or out of the structure and a specific unique metabolic or …
What is the function and structure of chloroplast?
How are structure and function related to adaptation? All living things have body parts with different functions that help them survive. How is the process of natural selection involved in evolution?
What is peroxisome and its function?
Peroxisomes are organelles that sequester diverse oxidative reactions and play important roles in metabolism reactive oxygen species detoxification and signaling. Oxidative pathways housed in peroxisomes include fatty acid β-oxidation which contributes to embryogenesis seedling growth and stomatal opening.
What is the function of a lysosome quizlet?
Lysosomes break down lipids carbohydrates and proteins into small molecules that can be used by the rest of the cell. They are also involved in breaking down organelles that have outlived their usefulness.
Which function is associated with the rough endoplasmic reticulum quizlet?
Function: Rough endoplasmic reticula are involved in the synthesis of proteins.
What are the 3 main difference between active and passive transport?
| Active Transport | Passive Transport |
|---|---|
| Active transport is an energetic process. | It is a physical process. |
| It is extremely selective. | It is partially non-selective |
| It is a quick process. | It is a moderately slow process. |
| It Occurs in one direction. | It Occurs in bidirectional. |
What is the difference between passive and active transport select all that apply?
The main difference between active and passive transport is the use of energy during cell transport of materials. … Passive transport on the other hand is the movement of molecules from higher to lower concentration. Because material is moving with the gradient energy is not required.
What is used in active transport but not passive transport?
Is used during active transport but not passive transport.
What are the cell structures and their functions?
| Organelle | Function |
|---|---|
| Nucleus | DNA Storage |
| Mitochondrion | Energy production |
| Smooth Endoplasmic Reticulum (SER) | Lipid production Detoxification |
| Rough Endoplasmic Reticulum (RER) | Protein production in particular for export out of the cell |
What gives the cell structure and holds organelles in place?
As its name suggests the cytoskeleton is like a cellular “skeleton.” It helps the cell maintain its shape and also helps to hold cell structures such as organelles in place within the cytoplasm.
Which cellular structure is responsible for packaging materials with the cell?
What is the function of the organelle indicated by B?
What is the function of each enzyme involved in DNA replication?
| Important Enzymes in DNA Replication | |
|---|---|
| Enzyme | Function |
| DNA helicase | Unwinds the double helix at the replication fork |
| Primase | Provides the starting point for DNA polymerase to begin synthesis of the new strand |
| DNA polymerase | Synthesizes the new DNA strand also proofreads and corrects some errors |
What is the role of each enzyme involved in DNA replication?
Enzymes involved in DNA replication are: Helicase (unwinds the DNA double helix) Gyrase (relieves the buildup of torque during unwinding) … DNA polymerase I (replaces RNA primers with DNA)
What is the structure and function of plasma membrane?
The primary function of the plasma membrane is to protect the cell from its surroundings. Composed of a phospholipid bilayer with embedded proteins the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.
What might you conclude about the membrane structure?
Infer: What might you conclude about the membrane structure of the final vesicle formed during exocytosis and the cell membrane? The cell membrane and the vesicle are both made of the same materials. This is because then the vesicle and the membrane can easily fuse together to move substances in and out of the cell.
Why does the structure of the plasma membrane make this type of transport necessary for fluids?
The phospholipid bilayer formed by these interactions makes a good barrier between the interior and exterior of the cell because water and other polar or charged substances cannot easily cross the hydrophobic core of the membrane. Can water cross the plasma membrane at all?
Enzymes – Structure and Function – Post 16 Biology (A Level Pre-U IB AP Bio)
Structure & Function of Enzymes
||Structure and Biological Functions of Co-Enzyme A||Biochemistry||
Enzymes (Updated)