1. What is the significance of use of potato in the preparation of culture media? 2. What is the significance of inverting the container after the media had solidified?
Q: Which of the following is the correct sequence for RNA splicing: 1. U2 binds to the branch site and…
A: Interaction of the U1 snRNP to the 5′ splice site (5′ ss) and engagement of splicing factor 1 and U2…
Q: Which of the following characteristics does not describe DNA? a contains thymine b contains uracil…
A: DNA contain : Adenine, thymine, cytosine and guanine. DNA present in the nucleus. Nucleus has…
Q: What makes molluscs different from other invertebrate phyla?
A: Introduction Molluscs:- Mollusca is the second-largest phylum of invertebrate animals after the…
Q: True or False: 1. There is the bidirectional mode of replication during S-phase. 2. Single strand…
A: The replication is the process of new DNA synthesis from the old DNA template by semiconservative…
Q: Identify the biomarkers used for Giant cell tumour.
A: A biomarker is considered to be a molecule found in the blood, or other body tissues that symbolizes…
Q: In cichlid fish, GNRH becomes increasingly active in the brain cells of: O A dull color fish O A…
A: The conventional hypophysiotropic GnRH system (now referred to as GnRH1), which expresses gnrh1 gene…
Q: If American cacti and African spurges were closely related, could they be used to show that…
A: Introduction Evolution is the process of a species' features changing over numerous generations…
Q: What are the different animal camouflage tactics? Name what animal has the ability for each
A: Concealing coloration, disruptive colouring, disguise, and mimicry are the 4 main forms of…
Q: Describe the key characteristics that would allow you to identify or differentiate diatoms, green…
A: A microorganism that can only be seen under a microscope. Bacteria, fungi, algae, and protozoa are…
Q: Why do Introns in a pre-operational transcript differ in size and number?
A: Introns An intron is any nucleotide sequence within a gene that is removed by RNA splicing to…
Q: Membrane proteins perform the following functions EXCEPT one. Which One? A. form the glycocalyx B.…
A: Membrane proteins come in a variety of shapes and sizes, and each has its own structure. They also…
Q: Which enzyme is responsible for unwinding and separating the parental DNA strands? a polymerase…
A: Each parental strand provides a blueprint for the synthesis of a new complimentary daughter thread…
Q: What are mechanisms of resistance in insects to different xenobiotics
A: Xenobiotics are chemical substances that are foreign to animal life and thus include plant…
Q: Discuss in details, the adaptations that Orobanchaceae (plant) has evolved to invade and manipulate…
A: Introduction Orobanchaceae:- It is a family of mostly parasitic plants of the order Lamiales, It is…
Q: role of the nervous system and genes in intellectual intelligence?
A: The neural system, often known as the "nervous system," is a complex network of neurons that have…
Q: Describe the traits that characterize primates.
A: Introduction :- Primates are a taxonomic order that includes Lemurs, Lorises, Tarsiers, Monkeys,…
Q: Discuss, the adaptations that Trypanosoma cruzi (Protist) has evolved to invade and manipulate the…
A: Trypanosoma cruzi is a protist that evolve itself to invade host cell and multiply itself.
Q: Cell membranes can maintain a difference in electrical charge between the inte- rior of the cell and…
A: Cell has an electric charge difference across its membrane. The reason behind this is the unequal…
Q: True or False: Plant viruses like animal viruses also utilize the cell’s machines to create viral…
A: NADP and ATP are utilized along with the carbon dioxide by plants. Later, the production of glucose…
Q: A B, and Cgenes are linked with Bin the middle. AB are 12 cM and BC are 20 cM apart. If ABdabC is…
A: If the geans are located on the same chromosome then they are called as linked genes. In this…
Q: True or False: 1. All functional transcripts have been initiated, elongated and terminated with…
A: False : post transcription events include splicing, capping, tailing. Initiation is the beginning of…
Q: Describe the structure and common shapes of prokaryotic cells.
A: Single-celled creatures known as prokaryotes are the oldest and most rudimentary types of life on…
Q: 1. Examine the butterfly wing and the bird wing shown in Figure 2 Figure 2. Butterfly and bird wing.…
A: The study of the commonalities and contrasts in the structures of various species is known as…
Q: Which of the following gene expression regulatory mechanisms saves the most energy but takes the…
A: Gene regulation expression defines a wide range of molecular mechanisms, that are used by the cell…
Q: Which of these fish populations will most likely decrease if people keep cutting down the trees near…
A: When looking for food, carp frequently cruise the coastal boundary. In morning and late in the day,…
Q: Most of the DNA sequences in a bacterial genome code for proteins, whereas most of the sequences in…
A: A bacterial genome is a dynamic structure that is influenced by a variety of events such as gene…
Q: vill regulate the physiological activities to make the conditions normal. Use the organs ssibly…
A: Hypothalamus in the brain plays a very important role in controlling and regulating the body…
Q: Which one of the following is true regarding spinal cord and spinal nerves? "spinal nerves are…
A: Introduction :- The spinal nerves are made up of 31 symmetrical pairs that connect the spinal cord…
Q: Match the major human develop categories with their descriptions. Question 2 options: cellular…
A: Introduction :- Cleavage is the division of cells in the early embryo following fertilisation in…
Q: Which of the following is the smallest living structural unit of the body? A. atom B. molecule C.…
A: Introduction - The human body is made up of billions of smaller components that fall into four…
Q: In the four o’clock plant Mirabilis jalapa, leaf color is governed by organelle inheritance of…
A: Introduction :- Amyloplasts (which store starch), elaiplasts or oleoplasts (which store lipids), and…
Q: Can (1) chain and (2) ring structural abberations still lead to fertile gametes? explain
A: Abberations indicates the genetic material which should be DNA . The DNA transfer the information…
Q: Chemiosmosis
A:
Q: The prime source of chlorofluorocarbons is A. Vehicular emissions B. Industrial effluents C.…
A: Introduction - Fully or partially halogenated hydrocarbons containing carbon, hydrogen, chlorine,…
Q: 18. Hormone Release Insulin is a hormone produced by the pancreas to help regulate the level of…
A: Insulin harmone increase the glucose uptake in cells from blood stream during fed state. It is the…
Q: Determine which amino acid is formed from the following mRNA codon: GUA. a aspartic acid b…
A: Introduction :- Amino acids are the building blocks of proteins. The building blocks of life are…
Q: What functional assays did Kazutoshi Takahasi and Shinya Yamanaka use to show that induced…
A: Kazutoshi Takahashi and Shinya Yamanaka modified mouse fibroblast cells that are able to synthesize…
Q: Density-dependent inhibition" is explained by which of the following O as cells become more…
A: Introduction Density-dependent Inhibition:- It occurs when cells grow to a limited density then…
Q: Every DNA sequence that can serve as an origin of replication is found to contain a DNA strand that…
A: The DNA double helix is unwrapped at precise locations termed origins, where replication begins.…
Q: In mRNA processing, the first protein to bind to the signaling region near the cleavage site of the…
A: Pre-mRNAs are processed in three phases in eukaryotic cells:Ending at the 5' mark.At the 3' end, a…
Q: What is ADP phosphorylation? What respectively are photophosphorylation and oxidative…
A: Introduction - The addition of phosphate to an organic substance is known as phosphorylation.…
Q: Which statement describes Linus Pauling's contribution to the understanding of DNA structure? a…
A: The following statement describes Linus Pauling's contribution to the understanding of DNA structure…
Q: Which DNA regulatory sequence speeds up transcription? a promoter b repressor c silencer d…
A: DNA or Deoxyribonucleic Acid is the genetic material in most higher eukaryotic organisms and some…
Q: What role does naloxone play in opioid addiction? Question 4 options: It binds opioids to…
A: Introduction Naloxone:- It is a medicine that rapidly reverses an opioid overdose, It is commonly…
Q: Match the pair of words with the description of the difference between them. Negative allosteric…
A: Enzyme inhibitors are defined as molecules or compounds that bind to an enzyme and affect their…
Q: Question 64 The cell formed through fertilization of an egg by a sperm is called a/an O zygote. O…
A:
Q: Equipment or materials used in immobilizing and separating cells of streak, pour and spread method.
A: Answer :- We need to understand one by one are as follow :- * Equipment or materials used in…
Q: In a species the haploid number of chromosomes is 4. Independent assortment has the possibility of…
A: Two single chromosome divide gene or chromosome pair. As a result two single haploid chromosome…
Q: Match the male structures with their descriptions. a collection of tissues that allows for…
A: 1) Testes: Tissue that house many cell types that are responsible for sperm manufacture and sex…
Q: During DNA replication, the enzyme called _______ unwinds the DNA do
A: The helicase enzyme unwinds the DNA double strand helix by breaking the hydrogen bonds present…
1. What is the significance of use of potato in the preparation of culture media?
2. What is the significance of inverting the container after the media had solidified?
Step by step
Solved in 2 steps
- 1. Briefly define culture medium. 2. What is the principle behind sterilizing media before use and before disposal? 3. Why are plated media stored in an inverted position?1(a) 1. What is the theory upon which intermittent sterilization is based? (B) Is dry or moist heat more efficient as a sterilizing agent? Why? (C) When would it be necessary to use aseptic techniques when inoculating a tube of nutrient broth with dirt? (D)Why do some microorganisms characteristically form a growth of the pellicle type? What environmental factors might alter the formation of a pellicle? (This is not a graded assignment)1. What is one advantage of utilizing the pour plate technique over the streak plate technique ? 2. Why must the agar pours be cooled to 45C before use in the pour plate technique? 3. Explain the consequences if a group removed all the agar pours from the water bath at one time and allowed them to sit on the bench for several minutes before using them. 4. Why can the agar pour tubes be rinsed in the sink after the agar is transferred to the Petri plate ? Could you rinse the tubes if the bacteria had been pipetted into the agar pour tubes rather than in the plates? Explain. 5. What would be the result if a student dipped his / her loop in the stock culture during inoculations of each quadrant ? Explain . part B 1. The introduction stated that microbes are mechanically separated or diluted over the surface of the medium . How is this accomplished ? 2. Go to https://commons.wikimedia.org/wiki/File:MacConkey_agar_with_LF_and_LF_colonies . . Which side of the plate (left or right)…
- 13. What is a differential agar? Why can it be of importance? 14. Describe how the following agars work: MacConkey, Blood, Phenylethyl alcohol, Mannitol salt. 15. What are the IMVIC series of tests? WHY / HOW are they used? 16. What is the catalase test? How is it used for colonies that are gram positive?9. Is the eosin methylene blue agar (EMB) a complex or defined medium? Explain based on its composition. Is MSA a A) differential, B) selective, or C) both differential and selective media? Explain based on what kind of microorganisms it allows to grow.1.What advantage(s) does the pour plate method have over the streak-plate method? 2.Why is the loop flamed before it is placed in a culture tube? Why is it flamed after completing the inoculation? 3.Before inoculating and pouring molten nutrient agar into a plate, why must the agar first be cooled to 50° C? 4.Explain why plates should be inverted during incubation. 5.Explain why plates should be inverted during incubation.
- 3b)A plant suspension culture was used to study the effect of three types of media on the growth of the culture using batch culture approach. Figure 3.1 shows the growth of the plant suspension cultures using Murashige and Skoog (MS), Gamborg B5 and Vacin and Went media. Comment and conclude on the results obtained. Suggest which is the most suitable medium to maintain the suspension cultures with justification.In not more than five lines, outline a method for preparation of tomato cell suspension culture and subculture.1. What is the significance of soaking the container in bleach? 2. What is the significance of keping the container closed except when pouring the medium; partially opening the container during pour-plating in preparing culture media?
- 1. TRUE or FALSE. An autoclave can be used to sterilize growth media?1. Give examples of specific applications for different types of solid tubed media 2. Give 5 examples of microorganisms that may be grown in Nutrient Broth. 3. Discuss the implication/s if the spore strip was missed out during the preparation of the sample for autoclave and possible remedy for this scenario.1. You were given a mixed nutrient agar broth culture of bacteria. a. How will you determine the different types of bacteria present in the mixed culture? b. How will you make a pure culture of these bacteria in a slant nutrient agar? c. How will you identify these bacteria?