Oxidase test is a biochemical test that is used to identify organisms that produce the enzyme oxidase.
Oxidase test is used to distinguish aerobic from anaerobic metabolism in microbes.
Aerobic metabolism is the use of oxygen to generate energy from a food source while anaerobic metabolism is the generation of energy with the absence of oxygen.
The procedure of oxidase test includes:
Place a piece of filter paper in a clean petri dish and add 2 or 3 drops of freshly prepared oxidase reagent.Using a piece of stick or glass rod (not anoxidized wire loop), remove a colony of the test organism and smear it on the filter paper.Look for the development of a blue-purplecolour within a few seconds as shown in colourBlue purple colour signifies oxidase positive organisms which includes Pseudomonas aeruginosa
Colourless signifies oxidase negative organisms which includes Escherichia coli
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How are meiosis and mitosis different?
Answer:
Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells.
Explanation:
Marco is given an immortal cell line of epithelial cells to dilute. The initial concentration is 12.5 million cells. If he does four 1:10 serial dilutions, what will be the concentration of the last serial dilution
Answer: 12.5 x 10^6/10000 = 1250 cells.
Explanation:
A serial dilution is the step-by-step reduction of the concentration of a solution. Usually, the dilution factor at each step is constant, resulting in a geometric progression of the concentration, which is logarithmic. Serial dilutions are used to create very dilute solutions by accurately reducing the concentration of a substance.
It is usually carried out in experiments where highly dilute solutions are needed, for example, those involving logarithmic scale concentration curves or those used to determine the density of bacteria. To do this, prepare several test tubes with, for example, 9 ml of dilution liquid and first add 1ml of the undiluted sample to the first tube and then make serial dilutions in the following tubes. The first tube will contain a 1:10 dilution, the second 1:100, the third 1:1000, the fourth 1:10000 and so on.
Use 1 ml of undiluted (stock) solution with a pipette into the first test tube, containing 9 ml of a liquid, which can be for example water, Phosphate-buffered saline (PBS) and mix. This is the 1:10 solution. For the second dilution, take 1 ml of the dilution from the 1:10 tube and add it to the 9 ml of liquid to make the 1:100 tube and mix. The third tube is prepared with 1 ml of the 1:100 solution and 9 ml of liquid and this will be the 1:1000 dilution. The last one is prepared with 1 ml of 1:1000 and 9 ml of liquid and it will be 1:10000 (the fourth dilution).
So, if you start with 12.5 million cells and dilute four times with serial dilutions of 1:10 each, the final concentration will be four times lower:
12.5 x 10^6/10000 = 1250 cells.
The red panda is an endangered mammal. Red pandas live in the trees in the forests in China. Explain one way of
making sure the red panda does not become extinct.
Answer:
The red panda (Ailurus fulgens) is a carnivoran native to the eastern Himalayas and southwestern China. It is listed as Endangered on the IUCN Red List because the wild population is estimated at fewer than 10,000 mature individuals and continues to decline due to habitat loss and fragmentation, poaching, and inbreeding depression.[1] Despite its name, it is not closely related to the giant panda.[3]
Endangered (IUCN 3.1)[1]
Scientific classificationedit
Kingdom:
Animalia
Phylum:
Chordata
Class:
Mammalia
Order:
Carnivora
Family:
Ailuridae
Genus:
Ailurus
F. Cuvier, 1825
Species:
A. fulgens
Binomial name
Ailurus fulgens
F. Cuvier, 1825
Subspecies
A. f. fulgens (Himalayan red panda) F. Cuvier, 1825
A. f. styani (Chinese red panda) Thomas, 1902[2]
Use the diagram to answer the question below. The cell membrane plays an essential role in
the life of the cell. How does the cell membrane help maintain the health of the cell in the figure
below?
Vacuole
Cell
membrane
Nucleus
Cell
wall
Chloroplast
a. The cell membrane contains genetic information of the cell.
b. The cell membrane provides support and protection for the cell.
c. The cell membrane is where protein molecules are manufactured in a cell.
d. The cell membrane regulates the movement of materials in and out of the cell.
Answer:
D for me
Explanation:
correct me if I'm wrong
loved to help people :)
Answer:
A.selectively permeable
Source:trust me bro
help lol I don’t get it at all and need help with this
Answer:
i think red
Explanation:
sorry if it is wrong
Name the newly and recent discovered ocean? comment
Which gases is unique to planet earth?
Answer:
Earth's atmosphere is roughly 78 percent nitrogen and 21 percent oxygen, with trace amounts of water, argon, carbon dioxide and other gases. Nowhere else in the solar system is there an atmosphere loaded with free oxygen, which is vital to one of the other unique features of Earth: life.
Answer:
oxygen and carbon dioxide are unique gases to planet earth..
what will most likely happen if a population is large and no migration, mutation, or environmental change occurs?
1. natural selection will increase
2. nonrandom mating will start to occur
3. the rate of evolution will increase
4. gene frequencies will remain constant
Disinhibition of the lateral geniculate nucleus may be responsible for vivid visual hallucinations in what condition?
a) behavioral variant frontotemporal dementia
b) schizophrenia
c) Alzheimer's disease
d) peduncular hallucinosis
Answer:
d) peduncular hallucinosis
Explanation:
One of the most striking symptoms of perpendicular hallucinosis is the existence of very vivid, colorful, and recurrent visual hallucinations. These hallucinations occur due to lesions of the brainstem and thalamus, which can influence a disinhibition of the lateral geniculate nucleus. The hallucinations provoked can be very debilitating for the person suffering from this illness and can completely disassociate him from reality.
which definition best describes a buffer?
Answer:
where are the options
Explanation:
The catalytic converter most likely was developed in response to *
A) the demand for more energy-efficient cars
B) the demand for increased car engine power
C) a need for lower-priced cars
D) a need to reduce air pollution
All of the following are examples of fibrous joints except: ________________
a. tooth within the maxilla
b. skull with the atlas
c. radius with the ulna
d. frontal bone with the parietal bones
Answer:
a. tooth within the maxilla
Explanation:
Fibrous joints are the type of joints that is connected by fibrous tissue, consist mainly of collagen. These joints are fixed joints where bones are united by a layer of white fibrous tissue having different thickness. Fibrous joints are present in the neck, in the wrist, knee, hip and at the foot of our body where two bones connect. It does not occur in tooth within the maxilla of human body.
which of the following is a type of wave that does not need a medium though which to travel?
A.) equilibrium
B.) longitudinal
C.) amplitude
D.) transverse
Answer:
The answer is D) Transverse
Explanation:
Electromagnetic waves which are in transverse (by nature) can travel withought a medium.
help please!
Is there a physical or behavioral characteristic that allows red beetles to be so
successful?
what bond is broken when energy is released?
Answer:
Bonds are both broken and made in chemical reactions but many biology teachers and textbooks state that "Breaking ATP bonds releases energy." In reactions bonds are broken and made. If the strength of the bonds formed exceeds the strength of the bonds broken the reaction is exothermic.
Explanation:
Hope this helps. :)
What happens after metaphase?
O A. Telophase
O B. Prophase
O C. Go phase
O D. Anaphase
it's D. anaphase
hope this helps
The correct sequence of Mitosis are Interphase – Prophase – Metaphase – Anaphase – Telophase. Therefore, Anaphase happens after metaphase. So, the correct option is D.
What is Mitosis?Chromosomes that have been duplicated are split into 2 new nuclei during the cell cycle phase known as mitosis. Mitosis, the process of cell division, creates genetically identical cells with a constant number of chromosomes. Hence, equational division is another name for mitosis.
A cell prepares for cell division by replicating its chromosomes, segregating them, and creating two identical nuclei during the mitotic phase. The cell's contents are often evenly separated into two daughter cells with identical genomes after mitosis.
Interphase, Prophase, Metaphase, Anaphase, and Telophase are the proper phases of mitosis. Anaphase therefore follows metaphase.
Therefore, the correct option is D.
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number of cell that undergo meiotic division to produce a 216 gametes in gymnosperms is
meiotic devision this is the answer it might help you
A dialyzing machine has a membrane that is permeable to water, urea, uric acid, ammonia, salts, and
glucose. The membrane is impermeable to protein molecules. In relation to the blood flowing
through the dialysis machine, the dialyzing solution must have:
a. the same concentrations of urea and salts
b. lower concentrations of glucose and protein
c. lower concentrations of urea, uric acid, and ammonia and higher or equal concentrations of glucose
d. higher concentrations of urea, uric acid, and ammonia and lower or equal concentrations of glucose
Answer:
C. lower concentrations of urea, uric acid, and ammonia and higher or equal concentrations of glucose
Explanation:
Hope it helps!!!
What is the role of RNA polymerase
Answer:
a
Explanation:
aa
Answer:
RNA polymerase (green) synthesizes RNA by following a strand of DNA. RNA polymerase is an enzyme that is responsible for copying a DNA sequence into an RNA sequence, duyring the process of transcription.
Nêu 2 cách hoạt động của glutathion trong tế bào hồng cầu
Answer:
Glutathione
GlutathioneGlutathione là một trong những thành phần tự nhiên bên trong cơ thể con người, đóng vai trò vô cùng quan trọng đối với sức khỏe mỗi chúng ta. Ngoài việc được sản xuất tự nhiên bởi cơ thể, glutathione có thể được tiêm qua đường tĩnh mạch, dạng viên uống hoặc dưới dạng thuốc hít.
GlutathioneGlutathione là một trong những thành phần tự nhiên bên trong cơ thể con người, đóng vai trò vô cùng quan trọng đối với sức khỏe mỗi chúng ta. Ngoài việc được sản xuất tự nhiên bởi cơ thể, glutathione có thể được tiêm qua đường tĩnh mạch, dạng viên uống hoặc dưới dạng thuốc hít.1. Glutathione là gì?
GlutathioneGlutathione là một trong những thành phần tự nhiên bên trong cơ thể con người, đóng vai trò vô cùng quan trọng đối với sức khỏe mỗi chúng ta. Ngoài việc được sản xuất tự nhiên bởi cơ thể, glutathione có thể được tiêm qua đường tĩnh mạch, dạng viên uống hoặc dưới dạng thuốc hít.1. Glutathione là gì?Glutathione (GSH) là một chất tự nhiên được sản xuất tự nhiên bởi gan và được tìm thấy trong hoa quả, rau và thịt và được tổng hợp từ tế bào bằng 3 amin gồm: Cysteine, glutamic và glycine.
GlutathioneGlutathione là một trong những thành phần tự nhiên bên trong cơ thể con người, đóng vai trò vô cùng quan trọng đối với sức khỏe mỗi chúng ta. Ngoài việc được sản xuất tự nhiên bởi cơ thể, glutathione có thể được tiêm qua đường tĩnh mạch, dạng viên uống hoặc dưới dạng thuốc hít.1. Glutathione là gì?Glutathione (GSH) là một chất tự nhiên được sản xuất tự nhiên bởi gan và được tìm thấy trong hoa quả, rau và thịt và được tổng hợp từ tế bào bằng 3 amin gồm: Cysteine, glutamic và glycine.Nồng độ glutathione trong cơ thể có thể bị suy giảm bởi một số yếu tố, bao gồm dinh dưỡng kém, độc tố từ môi trường và sự căng thẳng. Ngoài ra, nồng độ của nó cũng có thể bị suy giảm dần theo tuổi tác.
GlutathioneGlutathione là một trong những thành phần tự nhiên bên trong cơ thể con người, đóng vai trò vô cùng quan trọng đối với sức khỏe mỗi chúng ta. Ngoài việc được sản xuất tự nhiên bởi cơ thể, glutathione có thể được tiêm qua đường tĩnh mạch, dạng viên uống hoặc dưới dạng thuốc hít.1. Glutathione là gì?Glutathione (GSH) là một chất tự nhiên được sản xuất tự nhiên bởi gan và được tìm thấy trong hoa quả, rau và thịt và được tổng hợp từ tế bào bằng 3 amin gồm: Cysteine, glutamic và glycine.Nồng độ glutathione trong cơ thể có thể bị suy giảm bởi một số yếu tố, bao gồm dinh dưỡng kém, độc tố từ môi trường và sự căng thẳng. Ngoài ra, nồng độ của nó cũng có thể bị suy giảm dần theo tuổi tác.2. Công dụng của Glutathione
GlutathioneGlutathione là một trong những thành phần tự nhiên bên trong cơ thể con người, đóng vai trò vô cùng quan trọng đối với sức khỏe mỗi chúng ta. Ngoài việc được sản xuất tự nhiên bởi cơ thể, glutathione có thể được tiêm qua đường tĩnh mạch, dạng viên uống hoặc dưới dạng thuốc hít.1. Glutathione là gì?Glutathione (GSH) là một chất tự nhiên được sản xuất tự nhiên bởi gan và được tìm thấy trong hoa quả, rau và thịt và được tổng hợp từ tế bào bằng 3 amin gồm: Cysteine, glutamic và glycine.Nồng độ glutathione trong cơ thể có thể bị suy giảm bởi một số yếu tố, bao gồm dinh dưỡng kém, độc tố từ môi trường và sự căng thẳng. Ngoài ra, nồng độ của nó cũng có thể bị suy giảm dần theo tuổi tác.2. Công dụng của GlutathioneTùy thuộc vào từng cách sử dụng cũng như mục đích sử dụng của người bệnh mà Glutathione mang đến những công dụng khác nhau, cụ thể là:
GlutathioneGlutathione là một trong những thành phần tự nhiên bên trong cơ thể con người, đóng vai trò vô cùng quan trọng đối với sức khỏe mỗi chúng ta. Ngoài việc được sản xuất tự nhiên bởi cơ thể, glutathione có thể được tiêm qua đường tĩnh mạch, dạng viên uống hoặc dưới dạng thuốc hít.1. Glutathione là gì?Glutathione (GSH) là một chất tự nhiên được sản xuất tự nhiên bởi gan và được tìm thấy trong hoa quả, rau và thịt và được tổng hợp từ tế bào bằng 3 amin gồm: Cysteine, glutamic và glycine.Nồng độ glutathione trong cơ thể có thể bị suy giảm bởi một số yếu tố, bao gồm dinh dưỡng kém, độc tố từ môi trường và sự căng thẳng. Ngoài ra, nồng độ của nó cũng có thể bị suy giảm dần theo tuổi tác.2. Công dụng của GlutathioneTùy thuộc vào từng cách sử dụng cũng như mục đích sử dụng của người bệnh mà Glutathione mang đến những công dụng khác nhau, cụ thể là:2.1 Sử dụng Glutathione dạng uống để điều trị
Name two pea plant traits studied by Gregor Mendel.
Answer:
Mendel used 7 pea plant traits in his experiment which included :
1.flower colour (purple or white)
1.flower colour (purple or white)2.flower position
1.flower colour (purple or white)2.flower position3.stem length
1.flower colour (purple or white)2.flower position3.stem length4.seed shape
1.flower colour (purple or white)2.flower position3.stem length4.seed shape5.seed colour
1.flower colour (purple or white)2.flower position3.stem length4.seed shape5.seed colour6.pod shape
1.flower colour (purple or white)2.flower position3.stem length4.seed shape5.seed colour6.pod shape7.and finally the pod colour.
The two pea plant traits studied by Gregor Mendel:
flower colorstem lengthGregor John Mendel discovered the basic principles of heredity through experiments with pea plants. The reasons behind choosing pea plants are: bisexual, self-pollinating, and various physical characteristics were easy to recognize and study.
In this, he used seven pea plant traits in his experiments are:
flower color (purple or white), flower position (axil or terminal), stem length (long or short), seed shape (round or wrinkled), seed color (yellow or green), pod shape (inflated or constricted)pod color (yellow or green).Thus, the correct answer is -:
flower colorstem lengthLearn more about the experiment of Mendel:
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2
Organism A
Offspring 1
Offspring 2
The diagram below represents a form of cellular reproduction
Fi
As a result of this process, offspring 1 and offspring 2 will have *
(2 Points)
Answer: A
Explanation:
they will have different traits because they will each have different dna but the same amount of genes
Offspring 1 and offspring two will have the same number of genes but different traits. So, the correct option is A.
How the same number of genes?When a sperm fertilizes an egg cell, each parent contributes 23 chromosomes with genetic information to the offspring. This means that each cell of the offspring's body has 23 chromosomes that contain instructions for their development, including their traits.What are the different traits?Parents pass on traits, such as eye color and blood type, to their offspring through their genes. Some health conditions and diseases can be passed on. Sometimes, one characteristic has many different forms. For example, blood type can be A, B, AB, or O.Eye color is based on the amount of pigment melanin in the iris. Every gene has an allele from its parents, so many variations are possible. Because of this, even if parents have blue eyes, offspring can have brown or green eyes, or one offspring can have blue, and others can have different eye colors from their family.Thus, we can conclude that two offspring will have the same genes but different alleles.
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Write Ratio 10 :35 in the form 1:n
1:3.5
Hope this helps! :)
Which structure is the first to collect the urine?
→ Metabolic waste is considered urine first in the collecting duct of the nephron. From the collecting duct, the urine will travel to the minor and major calyces and then the renal pelvis before leaving the kidney via the ureter.
I hope it's helps ╮(＾▽＾)╭
#CarryonlearningThe structure that is the first to collect urine is the calyx. The correct option is B.
What is calyx?The name "calyx" refers to the flower's outermost whorl. The calyx is made up of sepals because they serve as the calyx's functional building blocks.
Urine travels through the renal calyces, which are kidney chambers. The apex of the renal pyramids is surrounded by minor calyces. Each pyramid's renal papillae are surrounded by a little calyx that collects urine from that particular pyramid.
A major calyx is formed when several minor calyces come together. Urine travels from the main calyces into the renal pelvis and then into the ureter. The majority of the sepals' color is green, and they serve to shield the flower's internal organs from damage, mechanical harm, and desiccation.
Therefore, the correct option is B) calyx.
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The question is incomplete. Your most probably complete question is given below:
A) pelvis. B) calyx. C) ureter. D) urethra.
Given the above result, Daniel’s doctor prescribes him antibiotics to be taken for 10 days. Daniel doesn’t like to swallow pills and decides to see if he will improve on his own without the antibiotics. Approximately 20 days after his initial symptoms Daniel notices new symptoms that included painful, swollen joints, shortness of breath, chest pain, and a skin rash that developed ring-shaped eruptions on the upper parts of his legs/arms and on his trunk. His doctor confirms that he has carditis (inflammation of the heart). Daniel’s disease has progressed to a more serious condition, what is this new condition?
Answer:
below
Explanation:
Myocarditis
The inheritance of genetic traits from parents to children follows predictable rules. Knowing that each parent contributes genes equally to each child, what determines an inherited trait such as eye color? Select one: a. Only the interaction between dominant genes. b. Only the interaction between recessive genes. c. The interaction between dominant and recessive genes does not determine inherited traits. d. The interaction between dominant and recessive genes.
Answer:
The correct answer is - D. The interaction between dominant and recessive genes.
Explanation:
The inheritance of genetic traits come from both parents and based of their gene it can be predicted what traits might found in the offspring. There two types of traits of a single gene, known as alleles. These alleles can be dominant which means they can mask the effect of another allele if present together. The allele that get masked by the dominant allele called the recessive allele. The interaction of both recessive and dominant alleles determines an inherited trait such as eye color.
Termite guts hosts a wide variety of microorganisms: bacteria, archaea and various protists exhibiting diverse ways of acquiring their nutritional needs. Which of the following modes of feeding is NOT found in the termite guts? a. Chemotrophs b. Heterotrophs c. Photoautotrophs d. Parasites e. Decomposers
Answer:
The correct answer is - C. Photoautotrophs.
Explanation:
Photoautotrophs are autotrophs or organisms that are able to obtain their food by using photosynthesis. Photosynthesis is the process in which sunlight trapped by the organism and converts to inorganic material such as CO2 and H2O to organic material which is glucose or sugar molecules.
In termite's guts, various types of diverse ways of getting their nutritional needs are found according to the microbes are Chemotrophs, Heterotrophs, parasites, and decomposers.
Which food has the greatest amount of polyunsaturated fat?
ATP → ADP + Pi is an example of a(n) ________ reaction.
Answer:
ATP → ADP + Pi is an example of a(n) catabolic reaction.
ATP → ADP + Pi is an example of a decomposition reaction.
A decomposition reaction is a type of reaction where a molecule breaks down into two or more molecules/products.Decomposition reactions can be divided into three classes: Thermal decomposition reactionPhoto decomposition reactionElectrolytic decomposition reactionAdenosine thiophosphate (ATP) is the primary energy source for cellular processes in the cells.ATP can be hydrolyzed to Adenosine diphosphate (ADP) and monophosphate (Pi) by the addition of water, thereby releasing energy.In conclusion, ATP → ADP + Pi is a type of decomposition reaction.
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Compare your observations of micrograph obtained from your the optical microscope, the scanning electron microscope and the transmission electron microscope?
Answer:
Scanning Electron Microscopes (SEM) Transmission Electron Microscopes (TEM)
Electron stream Fine, focused beam Broad beam
Image taken Topographical/surface Internal structure
Resolution Lower resolution Higher resolution
Magnification Up to 2,000,000 times Up to 50,000,000 times
Explanation:
Answer:
Scanning electron microscope: is useful for detailed study of the topography of a specimen.
Transmission electron microscope: is used to study the internal structure of cells.