Q: A human STR locus contains a tandem repeat (TAGA), where n may be any number between 5 and 15. How…
A: Introduction The traits of a living organism are determined by its genotype. These traits are…
Q: The skeletons of early fossil Homo and archaic Homo sapiens are marked by very ____ skeletons; this…
A: The cerebral cortex is the part of the brain that consists of the gray matter. The cerebral cortex…
Q: In your own words, give the components of the following body system and the functions of each…
A: The respiratory system is the organs and other parts of our body involved in breathing, when we…
Q: glucose Glycoly sis (b). Glucose is split into two 3-carbon chains called AcetylCoEnzymeA in order…
A: Cellular respiration can be defined as a set of metabolic processes that occurs in the cells of…
Q: Johnny has just been infected and needs your help in letting him know how his body is fighting the…
A: The main function of immune system is to distinguish between self and non sell. its primary function…
Q: Prototrophs A. Can grow on complete media and minimal media B. Can grow on complete media but not…
A: Introduction Prototrops are the kind of microorganism that has the same nutritional requirements as…
Q: What is reproduction
A: Introduction All living organisms shows some basic features which distinguish them with non-living…
Q: What is acetic orcein and what structure does it stain?
A: A stain is a visible discoloration on a surface, substance, or medium. They are the result of the…
Q: Which statement is true concerning hominins and the archaeological record? a. There is a 10 million…
A: Human evolution is the evolutionary process, leading upon the appearance of modern human being.…
Q: What is it? tRNA Met 0- ✓ Formylmethionine Met-tRNA O- Aminoacyl-tRNA L-histidine Methionine H₂ NH₂…
A: Transfer RNA serves as a physical connection between the amino acid sequences of mRNA and…
Q: Many common medications function by interrupting the normal operation of certain signal transduction…
A: Inside the cell, multiple signaling pathways run simultaneously that allow the cell to communicate…
Q: what molecule beside carbohydrates do plants need to grow? 7 what are they? 7 where do they come…
A: Answer: Plants : Plants are the living things on earth and they need certain molecules with sunlight…
Q: 1. Define noncompliant. 2. Is this person experiencing ketoacidosis or insulin shock? Explain your…
A: As per our Q&A guidelines, we are supposed to answer only three sub-parts. Please repost the…
Q: Which of the following DNA regions is NOT involved in gene expression regulation in eukaryotes?…
A: Promoter-proximal elements are the DNA sequences present in eukaryotes. These are located close to…
Q: My Planet is called _____________________. It is located in the ___________________. The weather is…
A: Astrobiology It is the study of life in the universe. Understanding life and the nature of the…
Q: How would changes in grey matter (number of connections) and white matter (myelination of the…
A: Introduction Grey matter- It consists of cell bodies and non-medullated nerve fibers. White matter-…
Q: The regulation of the blood glucose level represents an important feedback loop in the hu- man body.…
A: The mechanism through which the body keeps blood glucose levels, particularly glucose…
Q: Q10.2: The mRNA codon 5'-UGU-3' corresponds to 5'-TGT-3' in the DNA coding strand. Name each type…
A: Introduction : A codon is a three-nucleotide sequence found in DNA or RNA molecules that codes for…
Q: Cocaine operates as a __________________________, leading to feelings of euphoria, as well as…
A: Drug addiction is a growing problem in many parts of the world. Other than the conventionally…
Q: According to the lab, tools are of value for a variety of reasons including____. a. providing access…
A: Prehistoric men have been using stone tools and this has been developed over millions of years.…
Q: whats the difference between a chromosome, a chromatin, and a chromatid?
A: DNA is genetic material in living organisms that is composed of two polynucleotide stands. It…
Q: Some muscle cells contain several nuclei per cell. Which of the following provides the most likely…
A: all multicellular cell organization develop through cell devision. cell devision in on cell form two…
Q: Based on the group it belongs to, which land plant innovations are possessed by Dicranum scoparium…
A: Introduction Vascular plants, otherwise called Tracheophyta, structures an enormous group of plants…
Q: Give one biological molecule and discuss briefly the intermolecular forces of attraction involved
A: Water is a biological molecule. It is formed by the sharing of electrons between oxygen and…
Q: One cost to sexual reproduction is that looking for a mate costs time and energy. Group of answer…
A: Introduction:- Reproduction is the biological process by which genetically similar offsprings are…
Q: how is scanning electron microscopy unique and usefulm what makes this so important?
A: Electron microscopes use a focused beam of electrons to image the specimen while optical microscopes…
Q: Cystic fibrosis is a degenerative disease that causes the progressive breakdown of the myelin…
A: Introduction Cystic fibrosis (CF) is a genetic disease that affects the lungs, digestive system, and…
Q: In the kidney, inhibition of glucose reabsorption causes glucose clearance to do which of the…
A: Introduction The word renal is very much related to Kidneys. The main function of Kidneys is to…
Q: Explain the importance of photosynthesis and the origins of plants for evolution.
A: Photosynthesis is the process in which the green plants make their own food by using sunlight as…
Q: A male mouse with genotype Igf2 Igf2m is crossed with a female who is Igf2 Igf2. What would be the…
A: 3/4 of the offspring would be normal; 1/4 would be dwarf
Q: Describe one chemotherapeutic approach that can be used to treat prostate cancer? Your answer should…
A: Introduction - It is a disease characterized by out - of-control cell growth.O Product of cells that…
Q: The term archaic Homo refers to a. Homo erectus / H. ergaster b. archaic Homo sapiens c. Homo…
A: INTRODUCTION Archaic human : human species seen between Homo erectus and Homo sapiens.
Q: Explain why digestion with EcoRI and Hindlll might give more than one insert fragment with some of…
A: Introduction Restriction endonuclease or restriction enzyme cut the double stranded DNA at a…
Q: List five characters you have that are analogous to characters with the same function but of…
A: Analogous organs are those which superficially appear similar due to their adaptation for similar…
Q: An 82 year old women was admitted to the hospital with the back and left rib pain. Radiographic…
A: The SSA test is the sulfosalicylic acid test. This is a part of the urinalysis which again the test…
Q: Record your KIA results below. Indicate the color of the slant and butt (Yellow/Red/Fuchsia),…
A: Klinger's Agar is the differential medium used for the identification of the organism's abilities to…
Q: All of the following regarding ribosomes are true EXCEPT: A. Ribosomes are comprised of protein and…
A: The answer is option c. All of the following regarding ribosomes are true EXCEPT ribosomes bind…
Q: Bacterial colonies may vary in shape and size depending on the organism and other factors. Cite some…
A: The bacterial colony is a group of bacteria derived from the same type of mother cell. The single…
Q: Which of the following is NOT TRUE about Eukaryotic Transcription: A. Occurs in the cytoplasm B. Pol…
A: Introduction Eukaryotic transcription is the complex process by which eukaryotic cells transcribe…
Q: The CTCF protein is involved in the regulation of the Igf2-H19 gene cluster. Which of the following…
A: The gene expression involves transcription and later translation. Different mechanisms are involved…
Q: 4. The process of impulse conduction along an efferent myelinated nerve involves transmission along…
A: Introduction Neurons transmit signals electrochemically, indicating that an electrical impulse is…
Q: Which of the following best describes a way in which a normal growth factor can stimulate cell…
A: A growth factor is a naturally occurring molecule that can promote cell growth, wound healing, and…
Q: The figure below represents the relative amount of nuclear DNA during different segments of…
A: Cell division is a phenomenon in which parent cell splits and gives rise to novel cells. Number of…
Q: DNA is charged and _fragments travel faster than positively, shorter, longer negatively, shorter,…
A: DNA is a polymer that is composed of two polynucleotide chains that coil around each other but…
Q: molecular motors
A: Molecular motor proteins: These are a class of molecular motors which move along the cytoplasm of…
Q: Mature human insulin is synthesized from a single Gene but contains two polypeptide chains (A and B)…
A: Introduction Pancreas is a holocrine gland present in our body. It has both endocrine and exocrine…
Q: Which variables are used when calculating the encephalization quotient? a. absolute brain size b.…
A: Encephalization quotient (EQ) is a relative brain size measure that is defined as the ratio between…
Q: A student sampled a population of fruit flies in which the percentage of homozygous recessive white…
A: Given the population of fruit flies, where the percentage of homozygous recessive white eyed…
Q: 2.(3 pts) A normal red blood cell is small and shaped like a flattened disk. The interior of a red…
A: Introduction : Osmosis is the movement of water molecules passing from a less concentrated solution…
Gene Interactions
When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.
Gene Expression
Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.
Step by step
Solved in 2 steps
- 6:58 Notepad Free Enter title... Describe the lac operon SAVE 49:"69% UNDOCell and Molecular Biology Subject: 1. Explain how the actions of the lac operon are different from the trp operon. 2. Why is it important for a multicellular organism to be able to turn on only some of its genes in any particular tissue or cell type?explanation summary You now add tryptophan to the cell. What would happen to the bacterial cell and its trp operon?
- Answer as Directed. Below is the model of a lac operon. lac I lac Z с promoter operator +1 lac Y lac A DNA 1. In the absence of lactose and the presence of glucose in the bacterial growth media, what proteins are bound to the lac control region? Is the operon being transcribed then? 2. In the presence of lactose and the presence of glucose in the bacterial growth media, what proteins are bound to the lac regulatory region? Is the operon being transcribed then? 3. In the presence of lactose and the absence of glucose in the bacterial growth media, what proteins are bound to the lac control region? 4. Why is it adaptive for a bacterium to not express the genes that encode for that lactose utilization proteins when lactose is not available or when glucose is present? 5. Why is it adaptive for the structural genes for using lactose to be under the control of a single promoter, i.e., synthesize a polycistronic message rather than three monocistronic message?40-How can understanding the gene expression pattern in a cancer cell tell you something about that specific form of cancer? 1-In E. coli, the trp operon is on by default, while the lac operon is off. Why do you think that this is the case?Answer as Directed. Below is the model of a lac operon. lac I lac Z с promoter operator lac Y lac A DNA +1 1. What are structural genes? Are the lac structural genes transcribed in the absence of lactose? 2. What is the role of the promoter and operator sites in the operon? 3. Is the repressor protein bound to the operator site in the absence of lactose? In its absence? 4. Under what nutritional circumstances (high or low glucose) is CAP bound to cAMP? 5. In the absence of lactose and the presence of glucose in the bacterial growth media, what proteins are bound to the lac control region? Is the operon being transcribed then? 6. In the presence of lactose and the presence of glucose in the bacterial growth media, what proteins are bound to the lac regulatory region? Is the operon being transcribed then? 7. In the presence of lactose and the absence of glucose in the bacterial growth media, what proteins are bound to the lac control region? 8. Why is it adaptive for a bacterium to not…
- amount of protein / amount of mRNA 12 mm / ↑ A B time (minutes) 20 Bacteria were grown in culture. At various time points, substances were added or removed from the culture medium. To assay the effects of the substances on operon gene expression, samples of bacteria were collected at one-minute intervals and levels of specific proteins and mRNAs were determined. If the operon under investigation is a repressible operon, which arrow indicates the addition of a molecule that binds the repressor protein?Read aloud V Draw Highlight 2. You are studying the regulation of the lactose operon in Escherichia coli, by measuring expression of the lacZ gene (i.e production of beta-galactosidase). (a) You identify several loss-of-function mutations in which lacZ is never expressed, in the presence and absence of glucose and lactose. What components of the lac operon could be mutated to produce this phenotype? List all possibilities. (b) You identify another loss-of-function mutation with the following expression pattern: Media + glucose - lactose + glucose +lactose - glucose - lactose - glucose + lactose lacZ expression Low Low High High What components of the lac operon could be mutated to produce this phenotype? List all possibilities.15b what is an attenuator? (in context of a prokaryotic operon )
- What is the difference between a repressible and an inducible operon?Discuss Concepts In a mutant strain of E. coli, the CAP protein is unable to combine with its target region of the lac operon. How would you expect the mutation to affect transcription when cells of this strain are subjected to the following conditions? Lactose and glucose are both available. Lactose is available but glucose is not. Both lactose and glucose are unavailable.Biol 1406-Lec 17 - Gene Exp X acconline.austincc.edu/ultra/courses/_891351_1/cl/outline Question completion Status. Blackboard Learn Which of the following stater X 9. Which of the following statements about transcription is not true? In both prokaryotes and eukaryotes, pre-mRNA is modified after transcription by adding a 5' cap and a 3' poly-A tail and splicing out introns leaving coding exons. Paraphrasing Tool - QuillBot Your disk is almos Save space by optir O During transcription only one DNA strand called the template strand is read and rewritten by RNA polymerase with the template strand read in the 3' to 5' direction and the mRNA transcript synthesized in the 5' to 3' direction. O During initiation of transcription, RNA polymerase binds to the promoter region in the DNA, unwinds the DNA and binds together RNA nucleotides complementary to the template DNA strand. O During initiation of eukaryotic transcription, the promoter region contains a TATA box in which transcription…