Q: Define about cis-acting regulatory element ?
A: Genes are generally referred to as the basic unit of heredity. They are a part of DNA, and are invol...
Q: Why are controls needed when conducting scientific experiments? Marathon runners eats lots of pasta ...
A: According to the question, we have to mention the reason behind the need for controls when conductin...
Q: 1. describe the shape of the human blood cells. name 2 structures that are present in plant cells bu...
A: Human Red blood cells are those cells which are present in blood and play an important role in trans...
Q: In the following image, A and B are and chromosomes C D E F A Replication
A: Chromosomes are thread-like structures found within the nucleus of both animal and plant cells. Prot...
Q: Compare the cell wall composition of Gram-positive with Gram-negative organisms. How does the cell w...
A: Bacteria are microorganisms that are present almost everywhere in the environment. There are species...
Q: Why is it appropriate to define evolution as the change in allele frequencies of a population over t...
A: Gene can be denoted in two form called allele .Allele frequency is basically prevalence or recurrenc...
Q: Name the parts and landmarks of the cerebellum
A: The nervous system has the Central Nervous system that in turn has the brain and spinal cord as its ...
Q: Describe the relationship of the vascular tissues in the translocation of solutes.
A: Plants work as factories for carbohydrate production. Carbon Dioxide is generated by the cells of va...
Q: Macromolecules Food Example Monomer(s) contained in this food Carbohydrates Lipids Proteins Nucleic ...
A: Macromolecules are large molecules where several monomer units are joined together. Examples include...
Q: What is maternal inheritance? Which characters show this type of inheritance?
A: Inheritance is the phenomenon of passing on the traits from parents to their offspring. Traits are c...
Q: You are getting ready to wash a car. You have a dry sponge and a bucket full of pure water only. You...
A: A hypotonic solution is a solution with a low concentration of solute and higher concentration of so...
Q: A geneticist conducted multiple two-point mapping experiments on several linked loci. With the data ...
A: In genetics, a locus is a specific, fixed position on a chromosome where a particular gene or geneti...
Q: Plant Physiology In CAM (Crassulacean acid metabolism) plants, what process happens during night ti...
A: Plants can synthesize their own food through photosynthesis. For this process, plants need carbon di...
Q: Using the DNA figure below to identify structures of the following letters: A= B= C= D= E= F: Circle...
A: DNA molecule is a polymer of nucleotides and each nucleotide has three main components that are Nitr...
Q: In CAM (Crassulacean acid metabolism) plants, what process happens during night time? How is malic a...
A: CAM (crassulacean acid metabolism) is a mechanism pf photosynthesis that involves the double fixatio...
Q: Choose which rule is violated by the following definition. A veterinarian is a doctor specializing ...
A: The veterinarian takes care of the animals.
Q: What are differences between promoters and enhancers ?
A: Protein synthesis is the process by which genetic instructions stored in DNA (in regions known as ge...
Q: The role of transfer RNA (tRNA) is to match a codon (3 bases) in mRNA sequence to: A. An amino ac...
A: The process of protein synthesis is also known as translation. It is possible with the help of messe...
Q: Your hand touches the surface of a hot stove. Without thinking, you immediately pull your hand away....
A: The peripheral nervous system is one of two parts that make up a bilateral organism's nervous system...
Q: What is the Vertebral column?
A: Anatomy is the subbranch of biology concerned with the structure of the body and its parts. The vert...
Q: How can DNA sequencing be used to identify other classes of pathogens such as viruses
A: DNA Carries the gene which codes for the protein .These proteins are responsible for expression of b...
Q: fter performing a subculture a student places the loop on the bench. Another student says, the instr...
A: Loop sterilization is an important step to be performed while doing any biological experiment. A loo...
Q: The benefits of the negative stain include: Mark all that apply: O No shrinkage or distortion of cel...
A: A negative stain employs especially an acidic stain because there is repulsion between a negative ch...
Q: Describe the shape of the plant cells. Name and label 5 structures you notice in the cells. label it...
A: Ans. Shape of the plant cells.... Plant cells are not necessarily square, but they have distinct edg...
Q: If 30 molecules of CO2 enter the Calvin Cycle, a. How many molecules of phosphoglycerate (PGA) will ...
A: Answer: Calvin Cycle : It is the process in plants and algae that uses environmental carbon dioxide...
Q: A man with AB blood and a woman with AB blood have a child. Is it possible for them to have a child ...
A: Blood groups are inherited from both the parents. The ABO blood type is controlled by a single gene ...
Q: Stage Metabolism A description is given for each item. Identify the stage of metabolism of each rea...
A: Metabolism: it's a set of chemical reactions which is undertook by our body to maintain and sustain ...
Q: How does smear preparation of cells from a liquid medium differ from preparation of cells from a sol...
A: Answer: Smear Preparation is the method in microbiology laboratories to place the small amount of cu...
Q: (1)-Describe the three different methods of horizontal gene transfer among bacteria and mention thei...
A: INTRODUCTION Three different method of horizontal gene transfer Transformation, Transduction and Con...
Q: What is a common proximal-promoter element ?
A: Carbohydrates, proteins, lipids, nucleic acids are the different macromolecules that are present in ...
Q: Of all taxonomic categories, only species has an objective definition. What is it?
A: Taxonomy is the systematic biology that deals with organism identification, naming, and classificati...
Q: Which statement about living organisms is not correct? A. Living organisms create energy. B. Livin...
A: An organism is any organic, living system that works as a separate entity in biology. Cells make up ...
Q: What is microbial ecology? How is microbial ecology related to human health?
A: Ecology is defined as the study of the organisms and the interaction of them with the external envir...
Q: Wriich of the lollowing thuices correctly ills in the blanks? During repolarization, the sodium ions...
A: The process of generation of action potential is a complex process and it involves three main phases...
Q: explain based on the picture above about steroid hormones in full and in detail
A: Steroid hormones are the class of hormones which are derived from the precursor cholesterol that bel...
Q: What are genetic markers? Why are they important?
A: Genetic markers are a gene with the known location on the chromosomes. Example: Minisatellite and SN...
Q: Discuss major lifestyle characteristics that lower our ecological footprint.
A: Ecological footprint is defined as how an individual uses different ecological resources.
Q: What is DNA Methylation ?
A: DNA (Deoxyribonucleic acid) is a genetic material composed of various genes that store essential cel...
Q: Biology Question
A: There are four main macromolecules proteins, carbohydrates, lipid, and nucleic acids. The presence o...
Q: Relative to a human lifetime, is evolution a process too slow or too fast for us to see it easily?
A: Evolution is the gradual change of a species' traits over a period of time. Natural selection has a ...
Q: Describe a bacterial replicon
A: Replication is a process of copying of daughter DNA molecules from parental DNA template.
Q: An organic molecule containing several hydroxyl (-OH) groups is linkely: A hydrophobic and dissolves...
A: - An organic molecule containing several hydroxyl groups is hydrophilic in nature, as they generally...
Q: What is the basis of saying that a particular nutrient is essential? Why are some nutrients consider...
A: There are six nutrients which are very necessary for the growth of not only animals but also human b...
Q: What are palindromes, and how are they related to restriction endonucleases? Why are they useful for...
A: The two strands of polynucleotides that make up the DNA molecule are intertwined in a helical fashio...
Q: A patient needs to take Phenobarbital 30 mg three times a day. How many tablets are needed per day?
A: Question: A patient needs to take Phenobarbital 30 mg three times a day. How many tablets are needed...
Q: 13. The monomer of a nucleic acid? polymer of a nucleic acid? 14. What two main functions do nucleic...
A: 13. The monomer of nucleic acid is called Nucleotides; the polymer of nucleic acid is called RNA or...
Q: Cutin, lignin, and chlorophyll are not proteins. How is it possible for genes to control the synthes...
A: Genes are the stretch of DNA that code for polypeptide chains.
Q: All of the protoplasm of one plant can be considered to be one continuous mass, called the _________...
A: Plant cells are cells that contain some cell organelle that differs from animal cells. This includes...
Q: discuss the consequences of replication errors;
A: DNA replication is the process by which a new copy of the DNA is formed. This process is necessary f...
Q: The answer to Question 23 will be different if R and T are very far apart on their chromosome (and i...
A: Introduction One gene/allele can affect the inheritance pattern of other gene present nearby on the...
Step by step
Solved in 2 steps
- Which of the following is not true about enzymes? a. They are consumed by the reactions they catalyze. b. They are usually made of amino acids. c. They lower the activation energy of chemical reactions. d. Each one is specific to the particular substrate(s) to which it binds.Enzymes _______. a. enhance reaction rates b. are affected by pH c. act on specific substrates d. all of the aboveWhich of the following statements are correct about how enzymes accelerate chemical reactions (select all that apply)? A. Enzymes bind substrates to raise their effective concentration B. Enzymes enhance the rate of a chemical reaction C. Enzymes catalyze chemical reactions by destabilizing transition states D. Side chains of protein provide reactive groups that facilitate reaction E. Enzymes shift the equilibrium of a chemical reaction to favor product formation
- Which of the following statements concerning enzymes is TRUE? a. Enzymes can increase the equilibrium constant of a reaction by 1000-fold. b. The activity of many enzymes can be regulated. c. Many enzymes are consumed in the reactions they catalyze. d. The rate of enzymatic catalysis is independent of pH.Choose only the letter, no explanation needed. Enzyme activity is affected by a variety of factors. What factor causes the enzyme to denature if it becomes extremely high? * Choices: A. Water's Effect B. pH C. Temperature D. Activator's Effect An inhibitor binds to the enzyme's active site, preventing the substrate from binding to it. What conclusions can you make from this situation? * A. No reaction occurred B. Non-competitive inhibition occurred C. Enzyme activity occurred D. Competitive inhibition occurred Each enzyme is very selective when it comes to its substrate. What can you conclude from this statement? * A. Any substrate can bind to the active site. B. Enzymes are used up in the reaction. C. Only a specific substrate can bind to the active site. D. Enzymes break down when not used. Lock : Key :: Active Site : _____________________________ * A. Substrate B. Active Site C. Coenzyme D. Cofactor Enzymes only speed up biological functions, so they are NOT used up in the…the graph shows the rate of reaction data for 2 different enzymes. one of these enzymes is found in the stomach, the other is found in the mouth. does both of these enzymes have the same optimum ph? why?
- Which of the following statement regarding enzymes is false? a.) they speed up reaction rates b.) they work within narrow temperature and pH ranges c.) The active site binds the substarate d.) They are consumed in the reactions they catalyzeIf the environmental temperature gets too high, what will happen to an enzyme and the chemical reaction it catalyzes? Group of answer choices A. It will not encounter its substrates often, and the reaction will slow down. B. It will crystallize, the active site will become inflexible and slow down the reaction. C. It will denature, lose its shape, and the reaction will not occur. D. It will become less fluid, and be unable to transport substances easily. E. It will become more fluid, and speed up the reaction.Which statements are true? The transition state is the highest free energy that a reaction reaches during its progress from reactants to products. Enzymes alter the free energy of the transition state but not its chemical nature. High affinity binding of substrate by enzymes alters the equilibrium between reactants (substrates) and products. High affinity binding of substrate by enzymes can impede reaching the transition state. Steric and electrostatic interactions between the enzyme and substrate usually disfavor the ground state of substrate and favor the formation of the transition state. If ∆G‡(catalyzed) is less positive than ∆G‡(uncatalyzed) then the enzyme is enhancing the rate of the reaction. Low affinity binding of substrate by the enzyme must always lead to a slower rate of reaction compared to the uncatalyzed rate. There is no barrier to substrate binding to an enzyme, only to the chemical step.
- According to the lock-and-key model of enzyme action,a. reactants must first be heated.b. enzyme shape is not important.c. each enzyme can catalyze many types of reactions.d. reactants must bind to an active site on the enzyme.e. enzymes control only a small number of reactions in the cell.Amylase is an enzyme found in saliva that breaks down starch. The enzyme is currently functioning at its optimal pH of 7 and optimal temperature of 32oC. Which of the following could result in an increase in the reaction rate? Providing an environment with a pH of 9. Decreasing enzyme concentration. Placing the reactants in an environment at 10oC. Increasing substrate concentration.Homeostasis is important for all of the functions of the human body. Why is maintaining homeostasis important for enzymes? Group of answer choices: To maintain their normal structure and function To prevent substrate from binding to the enzyme To allow the substrate to bind forever To cause the enzyme to fold differently for each reaction
