Concept explainers
To discuss:
On or off of gene expression for production of breast milk.
Introduction:
DNA is a genetic material consisting of a long stretch of
Want to see the full answer?
Check out a sample textbook solutionChapter 4 Solutions
ANATOMY & PHYSIOLOGY LL\AC
- Enzymes involved in amplification of genearrow_forwardChoose the statement that correctly characterizes regulated and/or constitutive gene expression. Regulated expression refers to gene expression that is either on or off, depending on the physiological or metabolic status of the cell. Constitutive expression refers to gene expression that is either on or off, depending on the physiological or metabolic status of the cell. Constitutive expression refers to gene expression that is always repressed in response to the absence of required nutrients or other metabolic molecules. Regulated expression refers to gene expression that is always on, regardless of the metabolic or physiological conditions in the cell. Regulated and constitutive expression are terms used to describe gene expression in prokaryotes only.arrow_forwardAt which of these levels isregulation of gene expression most energy-efficient?arrow_forward
- How would a dominant-negative Arf1 protein affect (or not) the following processes. Receptor-mediated endocytosis of LDL Sorting of lysosomal hydrolase precursors to the endosome Return of ER-resident proteins from the Golgiarrow_forwardPart A (Short Response): You are developing a TGF-β agonist, but you don’t yet know which specific proteins it is signaling through. You want to do a single Western blot to measure changes in signaling activity, regardless of which pathway is being activated. For which protein involved in these pathways could you measure the levels in the nucleus of cells and be confident in your results? Why? This part was already posted on chegg, but I didn't understand the answer. I need a thorough explanation, so I can fully understand. Part B (Short Response): There have been many attempts to block TGF-β signaling in cancer through many different mechanisms, but none of been very successful. Why do you think this is? I know they have gotten close to being successful, but I don't know what preventing their success.arrow_forwardPlease explain in detail why is BCL-2 a suppressor of apoptosis?arrow_forward
- Gene expression may change in response to external cues through the activity of multiple signal transduction cascades. What is the primary mechanism that determines if a gene is expressed or not?arrow_forwardSome elongation factors are evolutionarily related to the G-proteins involved in signal transduction. Provide a possible reason why this is the case.arrow_forwardVitamin A's two best studied forms and functions are O both rhodopsin action and gene expression dependent on retinal retinoic acid-mediated vision, and retinal-dependent gene expression both gene expression and rhodopsin action dependent on retinoic acid retinal-mediated vision, and retinoic acid dependent gene expressionarrow_forward
- Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage LearningHuman Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning