Which of the following cellular deficiencies would most likely be related to these MT ND1 MT ND1 mutations?
Which of the following cellular deficiencies would most likely be related to these MT ND1 MT ND1 mutations?
Which of the following cellular deficiencies would most likely be related to these MT-ND1 mutations? The cell is unable to synthesize most proteins required for normal cell functions.
Which of the following conclusions about increasing the number of folds in the inner mitochondrial membrane is best supported by the results of the experiment?
Which of the following conclusions about increasing the number of folds in the inner mitochondrial membrane is best supported by the results of the experiment? It increases the surface area available for ATPATP production, which results in faster cell growth. You just studied 12 terms!
Which of the following conclusions about the radiolabeled amino acid is best supported by the results of the experiment?
Which of the following conclusions about the radiolabeled amino acid is best supported by the results of the experiment? It was mostly incorporated into proteins that regulate and manage metabolic reactions.
Which of the following changes will most likely result from a depletion of available ATP stores inside the cell?
Based on the model presented in Figure 1, which of the following changes will most likely result from a depletion of available ATP stores inside the cell? The Na+ concentration inside the cell will increase. You just studied 30 terms!
Which cellular component will be found in the widest range?
The chloroplast
Which of the following best predicts how movement proteins help plant viruses travel from one plant cell to another quizlet?
Which of the following best predicts how movement proteins help plant viruses travel from one plant cell to another? Movement proteins increase the permeability of the plasmodesmata between plant cells.
Which of the following best predicts how the movement protein modifies plant cells in order to help TMV travel from cell to cell?
Which of the following best predicts how the movement protein modifies plant cells in order to help TMV travel from cell-to-cell? The movement protein modifies the plasmodesmata between plant cells. The helper T-cell will no longer bind to the B-cell, and as a result, the B-cell will not be activated.
Which of the following best describes a drug interaction that directly interferes with a signal transduction pathway?
Which of the following best describes a drug interaction that directly interferes with a signal transduction pathway? A medication enters the target cell and inhibits an enzyme that normally synthesizes a second messenger. The cell would be prevented from entering mitosis, and the cell would stop dividing.
Which of the following enzymes can rapidly remove phosphate groups from proteins?
Also important to the phosphorylation cascade are a group of proteins known as protein phosphatases. Protein phosphatases are enzymes that can rapidly remove phosphate groups from proteins (dephosphorylation) and thus inactivate protein kinases./span>
Which enzyme is being tested to remove phosphate groups?
Phosphatases
What is the difference between a protein kinase and a second messenger?
A protein kinase is an enzyme that adds a phosphate group to another protein. Protein kinases are often part of a phosphorylation cascade that transduces a signal. A second messenger is a small, nonprotein molecule or ion that rapidly diffuses and relays a signal throughout a cell.
How can the same hormone have different effects on muscle cells?
How can the same hormone have different effects on muscle cells? The two types of muscle cells have different signal transduction pathways for epinephrine and thus have different cellular responses.
Which of the following is a key difference between Gpcrs and RTKS?
The key difference between G protein coupled receptors and receptor tyrosine kinases is that the G protein coupled receptors can trigger only one cell response from a single ligand binding while the receptor tyrosine kinases can trigger many cell responses from a single ligand binding./span>
What are 3 examples of signals that cells may receive?
In multicellular organisms, growth factors, hormones, neurotransmitters, and extracellular matrix components are some of the many types of chemical signals cells use. These substances can exert their effects locally, or they might travel over long distances.
What happens when cell signaling causes a cytoplasmic response?
When cell signaling causes a response in the cytoplasm, what normally happens? Signaling pathways may regulate the activity of proteins, directly affecting proteins that function outside of the nucleus. A signal may cause the opening or closing of an ion channel or a change in cell metabolism.
What often happens in response to a second messenger?
Second messengers are intracellular signaling molecules released by the cell in response to exposure to extracellular signaling molecules—the first messengers. Second messengers trigger physiological changes at cellular level such as proliferation, differentiation, migration, survival, apoptosis and depolarization.
What happens when cell signaling goes wrong?
This constant communication is so fundamental to the body’s health and development that when cellular signals go awry, the interference may cause a number of conditions or diseases, such as diabetes—or cancer. In other cases, cancer cell signaling remains a mystery, and a strong focus of future research./span>
Is IP3 a second messenger?
Inositol 1,4,5-triphosphate (IP3) is a second messenger that binds to the IP3 receptor encoded by ITPR1 (van de Leemput et al., 2007 ).
What is the function of the second messenger IP3?
Together with diacylglycerol (DAG), IP3 is a second messenger molecule used in signal transduction in biological cells. While DAG stays inside the membrane, IP3 is soluble and diffuses through the cell, where it binds to its receptor, which is a calcium channel located in the endoplasmic reticulum.
What is the relationship between the formation of IP3 and the elevation of intracellular Ca2 +]?
What is the relationship between the formation of IP3 and the elevation of intracellular [Ca2+]? Binding of IP3 to the smooth ER causes releases of calcium.
What does second messenger mean?
Second messenger, molecule inside cells that acts to transmit signals from a receptor to a target. Many second messenger molecules are small and therefore diffuse rapidly through the cytoplasm, enabling information to move quickly throughout the cell.
What is the difference between the first messenger and second messenger?
What is the difference between a first messenger and a second messenger? First messenger is the ligand, second messenger is any small, non-protein components of a signal transduction pathway. cAMP activates protein kinase A, which causes a cellular response.