Question 3 RNA polymerase can still transcribe a gene if LoxP sites and a stop cassette are inserted between a promoter and its gene. True O False Question 4 2 p

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A: Introduction :- The majority of bacteria are not harmful. Those that are have specific virulence…

Q: Complete the following problems. Restriction enzymes (REs), which cut D NA at specific sequences,…

A: Answer ::   Introduction A plasmid is a genetic structure in a cell that can replicate independently…

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A: Answer :- As we know that Males have a couple of penises that pass sperm from their cloaca to the…

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A: i) This case is of hypersensitivity type 1 as the effect disappears within an hour and does not get…

Q: Draw and describe the different types of egg as to the concentration of yolk they contain. Give…

A: Almost all the female animals lay eggs of various species, such as birds, reptiles, amphibians, a…

Q: In order to insert foreign DNA into a plasmid for molecular cloning, the main components required…

A: Plasmids are small, double stranded, closed circular, symbiotic DNA molecules that occur naturally…

Q: After about three seconds to start an intense excercise, which substance is immediately broken down…

A: D. Creatine phosphate

Q: A student was asked to list the organelles that would be abundant in a cell that synthesizes…

A: The Organelles are little structures that are present inside the cytoplasm that complete funtions…

Q: How much more Rohydraloxide does it take for the rats to have a 50% probability of death if the rat…

A:

Q: You are preparing to amplify a DNA sample using PCR and add the following to your set-up: forward…

A: PCR or polymers chain reaction is a process that use to amplify a particular DNA. It needs different…

Q: The primers used in PCR are double stranded DNA oligosaccharides. True False

A: The answer is False.  Primers are small, chemically synthesised oligonucleotides that are…

Q: Find the flaws   fungi are multicellular organism not sure similarities with both plants and…

A: Fungi :  These are groups of multicellular eukaryotic organisms.  They are heterotrophic and can…

Q: Which one of the following terms best describes a phospholipid. It consists of а: A. polar head and…

A: Introduction :- Phospholipids (PL) are polar lipids made up of two fatty acids, a glycerol unit, and…

Q: (i) Serum sickness belongs to what type of hypersensitivity? What causes serum sickness? (ii) Serum…

A: i) The serum sickness is a type-3 hypersensitivity reaction. -serum sickness have low levels of…

Q: 12.Place the following events of the acrosomal reaction in the correct chronological order.(This is…

A: Acrosomal Reaction:  A sperm must first fuse with the plasma membrane before penetrating the female…

Q: It seems paradoxical that a lipid bilayer can be fluid yet asymmetrical. Explain.

A: Introduction :- The lipid bilayer (also known as the phospholipid bilayer) is a thin polar membrane…

Q: Don't copy from internet. Thanks!! 1. When does the food chain starts? How come it never exceeds…

A: Food chain refers to the sequence of events in an ecosystem where one living organisms eats other…

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A: Fitness  In ecology fitness means, an individual have ability to produce viable offspring.

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A: Since you have asked many questions, I'm giving you the answer of first 3 Please repost in order to…

Q: Rhodopsin contains: opsin and retinal vitamin A and ATP red, blue and green pigments light waves The…

A:

Q: 15.Muscle contraction is caused by (This is a multiple choice question choose the answer from the…

A: Sarcomere is the functional unit of contraction. The distance between two Z lines is called…

Q: NDICATE WHETHER THE STATEMENT IS TRUE OR FALSE 1. Pelle is an inhibitory protein.   2. Tube is an…

A: Pelle It is a protein that is a serine or threonine kinase that has the ability to phosphorylate the…

Q: B cells always need helper T cells to stimulate them to make antibodies. A. True B. False

A: ANSWER;-True

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A: Plant are photosynthetic , autotrophic organism that belongs to kingdom Plantae . Kingdom Plantae…

Q: Explain the typical immunophenotypic features of peripheral B cells in: (i) X-linked…

A:

Q: 16.In what order do sperm move through the structures of the female reproductive tract? (This is a…

A: Reproductive System: The biological system of an organism's reproductive system, also known as the…

Q: A factor to show to effect the acute toxicity for many chemicals in the stomach A Presence or…

A: 9. Sex, epigenetic changes, and polymorphisms in gene products xenobiotic-metabolizing elements…

Q: 1. Skunk cabbage has evolved stinky flowers because (a) the smell prevents other plants from growing…

A: Introduction Plants and other organisms use photosynthesis to transform light energy into chemical…

Q: Describe the different anthropogenic causes of the water cycle.

A: The water cycle, also known as the hydrological cycle or the water balance, refers to the continuous…

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A: Answer ::   Leaf promordia which are horns on the apical meristem. Leaf primordia and auxillary…

Q: A ВЕ 1. saturation of blood and tissues with dissolved gases 2. decompression B. Oxygen starvation…

A: Option C

Q: How is the photic energy absorbed by chlorophyll transfered to ATP molecules in…

A: Introduction - Daylight is the essential wellspring of energy for photosynthesis. Green growth and…

Q: Thirst is a relatively poor indicator of dehydration for athletes? A. True B. False

A: Ans - B) False Physiologically thirst is a regulatory mechanism of the living organisms that…

Q: When 1.6 million year old Nariokotome/Turkana skeleton was recovered near Lake Turkana in Kenya.…

A: The skeleton of the Nariokotome kid has been dubbed "the fossil discovery of the century." Since it…

Q: describe the genral mechanims of Na+ toxicity at the cellular level

A: A mechanism in biology is a system of causally interconnected elements and processes that create one…

Q: The amount of light entering the eye is determined by the size of the: O The pupil O The lens O The…

A: Pupil present in the center of iris .The amount of light entering the eye control by the size of…

Q: RELATIVE HUMIDITY 1. the amount of water vapor in grams per cubic meter of air at a given…

A: Humidity is known as the presence of water vapor in the atmosphere. This is measured by an…

Q: ACTION ON THE HUMAN ORGANISM OF UV RADIATION WITH A WAVE LENGTH 320-280 nm 1. anti-rachitic 2.…

A: UV Radiation or Ultraviolet Radiation is emitted majorly by the sun and also by some artificial…

Q: 3. Although rabbits cannot break cellulose down into simple sugars, the bacteria that live in their…

A: Cellulose is a polysaccharide that consists of several units of beta D glucose units joined…

Q: Which chordates exhibit internal fertilization? 2. Which chordates exhibit external fertilization?

A: External fertilization: it is a mode of reproduction where a male organism's sperm fertilizes a…

Q: Which symptoms would be present in a case of aldosterone hyposecretion? O low metabolic rate O low…

A: Autonomous aldosterone hypersecretion leads to hypertension and hypokalemia. ACTH means…

Q: Draw one of the 20 amino acids and label the amino group, the carboxyl group, the R group (side…

A: Amino acids are the building blocks of proteins. The fundamental unit of life are amino acids and…

Q: The secretes growth hormone, which is also known as somatotropin. O thyroid O anterior pituitary O…

A: Hormones are referred to as the blood's chemical messenger. The hormones are released by different…

Q: 9.Which among the following choices lists the three phases of the ovarian cycle in the correct…

A: Ovarian cycle is a series of events that happens during a period, which contains the follicle…

Q: Which of the following is not true of toxicant binding to plasma protein? Is usually ionic bonding…

A: 14. Reduced plasma protein binding results in a rise in free plasma fraction, which increases…

Q: 7. The vascular tissue that transports water and minerals from the soil to the rest of the plant is…

A: The cell cycle is a four-stage process in which the cell increases in size (gap 1, or G1, stage),…

Q: MHCII molecules will bind __________ and locate to the cell surface. a. T-independent type antigens…

A: T cells are not able to recognize free antigens directly. They can recognise only antigens that are…

Q: The thick filament is composed almost entirely of _____ molecules. (This is a multiple choice…

A: Each organized skeletal muscle in our body is made up of a number of muscle bundles or fascicles ,…

Q: Workplace Hazards 1. What are the types of environmental monitoring?

A: Environmental monitoring relates to the instruments and procedures used to monitor, characterise,…

Q: 2. How have new technologies, such as DNA analysis and biochemical tests changed the way organisms…

A: Given: The hierarchy of classification suffers from its own disadvantages when only the physical…

Environmental health and hazards

An organism's environment is the environment in which it lives and has an impact on its well-being. The World Health Organization (WHO) defines environmental health as "those aspects of public health, such as quality of life, that are influenced by physical, chemical, biological, social, and psychosocial components in the environment." Environmental health is concerned with both natural and man-made settings in order to enhance public health. Environmental science, occupational medicine, toxicology, and epidemiology are the key subdisciplines of environmental health.