Answers
The provided ques is incomplete as it lacks the picture showing different media and result, however, the correct question is attached in picture format:
Answer:
The correct answer is - B as tube B shows H2S production.we can see the black color formation.
Explanation:
TSI is a differential media that can distinguish both hydrogen sulfide and fermentation. It is additionally a rich medium permitting the development of particular species.
Sodium thiosulfate and ferrous ammonium sulfate present in the medium identifies the creation of hydrogen sulfide and is shown by the dark shading in the bottom of the tube.
The Triple Sugar Iron (TSI) test is a microbiological test generally named for its capacity to test a microorganism's capacity to ferment sugars and to create hydrogen sulfide. It is frequently used to separate enteric microbes including Salmonella and Shigella.
Thus, the correct answer is - B as tube B shows H2S production.we can see the black color formation.
Related Questions
why during cold weather a person urinate more frequently and urine is more diluted?
Answers
Explanation:
Cold weather will result in your body needing to filter more blood than normal as blood is rushing to your vital organs at a higher frequency. This results in you having to pee more often.
A 4-year-old child arrives at the clinic with his mother. The mother tells you that she recently moved in with her new boyfriend and her son has been very quiet lately
Answers
the number of possible genetically different gametes for an organism equals 2n where n is the number of pairs of chromosomes if an organism has six pairs of chromosomes how many different gametes ca it produce
A. 64
B. 256
C. 32
D. 128
Answers
the formula is 2^n
2^6 =64
Answer:
64
Explanation:
The skeleton is an integral part of the body. It works with other major body systems to help the body function and stay healthy. The bones are also shaped by their relationships with other body systems. How does the skeleton specifically work with and relate to the muscular system
Answers
Answer:
The bones of the skeletal system serve to protect the organs, support the body's weight and shape it. The muscles of the muscular system attach to these bones and pull them to allow body movement.
The animation demonstrates several traits that are characteristic of the primate order. In particular, it shows how primates have several features that enhance their vision and their sense of touch and dexterity. These characteristics make primates particularly well adapted to what type of environment?
Answers
Answer:
Arboreal Habitats.
Explanation:
The word arboreal has its roots in the Latin word arboreus, which means "relating to trees."
The word arboreal speaks to not just to animals that are adapted to the tree environment, but also to all other things that look like or take the branching form of a tree. An example would be a diagrammatic representation of one's family geology.
Examples of animals that live on trees are:
KoalaMajority of the Avian Species (especially those that can fly)Sloths etc.Cheers!
Which of the following is a correct comparison between RNA polymerase holoenzyme that functions in transcription and the primase enzyme that functions in DNA replication?
A) Both enzymes synthesize RNA
B) Both enzymes are bound by sigma factor
C) Both enzymes shnthesize DNA
D) Both enzymes are composed of RNA
Answers
Answer:
Option A
Explanation:
RNA polymerase is an enzyme that aids in the transcription of DNA into RNA during transcript in the nucleus.
Primase is an enzyme that synthesizes short RNA sequences called primers. These primers serve as a starting point for DNA synthesis during replication as the DNA polymerases cannot begin the synthesis of the new strand, they only extend it after primase begins it.
And since primase produces RNA molecules, the enzyme can be said to be a type of RNA polymerase.
what is ecological footprint
Answers
Explanation:
Ecological footprint:
Is a Measure the area required by an individual, population or activity of biologically produced land and water to produce all the resources it consumes and absorb the waste it generates, using prevailing technology and resource management practices. Hope this helps and have a great day! Good luckSome human proteins that are used in therapeutics, such as insulin, can be produced by genetically modified yeast. Though genetically modified bacteria can also be used to produce these therapeutics, yeast is considered by many to be the superior type of organism to use for this purpose. What is the advantage of using yeast cells instead of bacterial cells when expressing human proteins?
a. Yeast cells grow faster than bacterial cells when expressing human proteins.
b. Yeast cells splice mRNA in an identical manner as human cells.
c. Yeast cells fold and modify proteins in a manner similar to human cells.
d. Yeast cells use the same genetic code for specifying amino acids as human cells.
Answers
Answer:
The correct answer is c.Yeast cells fold and modify proteins in a manner similar to human cells.
Explanation:
Yeasts are known as one of the most useful microorganisms to humans due to the best known eukaryotic microorganisms.
As yeasts are eukaryotes like humans and hence have the system for post translational modification that is needed for proper folding of eukaryotic genes. Due to this fact and advantages yeast is considered by many to be the superior type of organism to use for for producing proteins.
Thus, the correct answer is C. Yeast cells fold and modify proteins in a manner similar to human cells.
The chemicals that are released from the hypothalamus, the gonads, and the adrenal cortex are called ________, whereas the chemicals released by bioelectrical impulses throughout the brain are called ________. 1. synapses; hormones 2. neurotransmitters; synapses 3. inhibitory communicators; dendrites 4. hormones; neurotransmitters
Answers
Answer:
Option 4: hormones; neurotransmitters.
Explanation:
Hormones are the body's chemical messengers that are released from the hypothalamus, the gonads, and the adrenal cortex. They are released into the bloodstream where they are transported to target organs and tissue.
Neurotransmitters are chemicals released by neuron which stimulates other neurons, muscle cells and gonad cells allowing for the passage of impulse from one cell to another one.
Predict the classification level that would first differentiate these snakes from a frog or a toad a.genus b.order c.phylum d.class
Answers
Answer:
d.class
Explanation:
All living organisms were grouped into a system of classification comprising of 7 levels i.e. Kingdom, Phylum/Division, Class, Order, Family, Genus, and Species. Organisms grouped into the same level of classification has something in common.
In this question, a snake, frog or toad are different species of organisms. They all belong to the same Kingdom, which is Animalia. Snakes, toads and frogs are also commonly grouped into the Phylum Chordata because they all possess a backbone.
However, the next level of classification, which is CLASS, is the first to differentiate the snake from a toad or frog. Snakes belong to the class: Reptilia while toads and frogs belong to the class: Amphibia i.e. animals that can live on both land and water.
Answer:
The classification level that would first differentiate snakes from a frog or a toad is the Class.
Both animals belong to the Animal Kingdom, both also belong to the Phylum of Chordata.
However, when it comes to Class, the snakes belong to the Reptilia, while the frogs belong to the Amphibia.
Kindly note that when it comes to levels of classification in the animal kingdom, there are 7 levels namely
Kingdom Phylum or division ClassOrderFamilyGenus, and Species. The largest group is the Kingdom while and Species is the smallest.Cheers!
Which kind of joint allows the arms to swing in circles? hinge
ellipsoidal
ball-and-socket
sliding
Answers
Answer:
hinge
Explanation:
BALL AND SOCKET Explanation:
A mutation of the proteolytic enzyme Trypsin results in a stable covalent bond between one of the catalytic amino acids of the protease and its protein substrate. Which of the following are probably true?
a. The enzyme would become inactive.
b. The enzyme and substrate would be stuck together.
c. The delta-G of the proteolysis reaction would change.
d. The rate of the catalyzed reaction would increase.
Answers
b. The enzyme and substrate would be stuck together.
A compound synthesized by bacteria or fungi that destroys or inhibits the growth of other microbes is a/an:__________.
a. synthetic drug
b. antibiotic
c. antimicrobial drug
d. competitive inhibitor
Answers
Answer:
antimicrobial drugs
Explanation:
An antimicrobial is a substance that kills or inhibits the growth of microorganisms such as bacteria, fungi, or protozoans.
Answer:
[tex]\boxed{Option C}[/tex]
Explanation:
A compound synthesized by bacteria or fungi that destroys or inhibits the growth of other microbes is an anti-microbial drug. Anti means "against" so anti microbes mean against microbes. Antimicrobial drugs are synthesized by bacteria and fungi and are used against microbes.
Which describes bedrock? consists of solid rock lies directly above the soil layer does not contain weathered rock forms from decomposed material
Answers
Answer:
consists of solid rock
Explanation:
Bed rock are solid rock material usually below the soil surface.
They are found at the ocean floor under sediment and other solid materials. Saprolite are bed rocks that have been weathered they are found above the bed rock overlaining it,
saprolite have different composition because it has gone through chemical weathering.
Above saprolite are soil and other loosed particle.
when the depth and structure of a bed rock is determined it help tell about the history of a place.
Answer:
a
Explanation:
A woman with hemophilia and a man without hemophilia are expecting a baby boy. What are the chances that their son will also have hemophilia?
Answers
Answer:It’s a 50/100 chance
Explanation:
Match each image with the life function the organism is performing.
Answers
What is a recombination? How is it different from mutation
Answers
: the process occurring in Meiosis I, in which offspring are able to obtain unique traits resulting in an array of different phenotypes (physical appearances).
Prophase I,
the homologous chromosomes line up in the middle of the cell and exchange segments of alleles, and then lining up in the cell in a NON-uniform way.... therefore resulting in genetically unique offsprings rather than identitical.
Mutations are result of evolutionary factors. They create genetic diversity that helps species adjust to different climates, behaviours and foods. Mutations that occur in a fit indivual can result in offspring that are genetically more successful in adjustments to different climates, foods, and environments.
All in all Recombination results in unique looking indivuals, whereas mutations result in greater survival chances of a species.
Rafael models a longitudinal wave using a coiled-spring toy. If he wants to model a longitudinal wave that carries more
energy, how should he move the end of the spring?
:::
O side to side, using larger motions
O side to side, using smaller motions
O forward and back along the spring, using larger motions
O forward and back along the spring, using smaller motions
Answers
Answer:
O forward and back along the spring, using larger motions
Explanation:
Longitudinal wave that carries more energy, he move the end of the spring by pushing the spring forward and backward directions using larger motion that creates two regions in the spring, the crowded area known as compression and more distance between parts of the spring known as rarefaction. If there is more compression in the spring so there is a lot energy present in the spring. So it is only possible when using larger motions in the spring.
Answer:
C
Explanation:
edge 2023
The diagram below shows some ocean floor features. (4 points) Which of these statements is correct about the feature labeled A in the diagram? a. It is an underwater basin caused by subduction. b. It is a deep trench located on both sides of a mid-ocean ridge. c. It is an area where sea floor spreading occurs. d. It is the portion of the ocean floor where old crusts are eroded.
Answers
Answer:
it is a deep trench located on both sides of a mid_ocean ridge
Consider that it takes, on average, 24 hours (or 1,440 minutes) for each onion root tip cell to complete the cell cycle. You can calculate the amount of time spent in each phase of the cell cycle form the percentage of cells in that stage.
Percentage of cells in stage X 1,440 minutes = ________ minutes of cell cycle spent in stage.
Answers
Answer: Hope this helps you :)
To calculate the time spent on each stage of the cell cycle, we need to know the total time required to complete the cycle and the percentage of cells that are in that stage. Then, take the product of both values.
--------------------
According to the statement,
The percentage of cells in a stage X 1,440 minutes = Time in minutes of cell cycle spent in the stage.
So, to know how much time is spent in each stage of the cell cycle, we need to know the time it takes for a cell to complete the whole cell cycle, and how many cells there are.
We already know that it takes, on average, 24 hours (or 1,440 minutes) for each onion root tip cell to complete the cell cycle.
Now, we should count the number of cells. Since I do not have a slide, I will assume that there are at least 50 cells, and from that 50 cells present in the slide, 25 are in the same stage. Let us say that the 25 cells are in the prophase.
So, considering a total number of 50 cells (100%), 25 cells equals 50% of the total.
Now, we know that
Time required to complete the cell cycle = 1440 minutesPercentage of cells in the prophase = 50%
Minutes spent in prophase = % of cells in prophase x 1440 minutes
Minutes spent in prophase = 50% x 1440 minutes
Minutes spent in prophase = 0.5 x 1440 minutes
Minutes spent in prophase = 720 minutes
According to this example, cells spend 720 minutes of their time in the prophase.
Now, I suggest you count how many cells do you have in your slide, and recognize how many are in each of the stages. Then you will be able to calculate the real-time spent per stage.
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Drag each tile to the correct box
Place the items in order from highest to lowest degree of internal organization
tissue
organ system
HID
&
Answers
Answer:
cell
tissue
organ
organ system
I hope this helps
Order from highest to lowest degree of internal organization are organ system, organ, tissues, cell.
What are the characteristic feature of tissue?A group of cells with similar structure and performing specific function called as tissue.
In animal it can be up four types such as connective, muscle, nervous, and epithelial tissue.
Connective tissue is made up of cells and gel like substances. Except lymph and blood all tissue contains collagenous fibers.
Fibers Of connective tissue help in binding of bones, movement of lungs, physical support to cell.
Muscle tissue are up different types like skeletal, cardiac and smooth muscle.
Skeletal muscle help in binding of tendons to bones followed by movement.
Cardiac muscle in heart and help in contraction to pump blood.
Smooth muscle in the intestine helps in movement of food through the digestive tract.
Nervous tissue is present in the brain, spinal cord, and peripheral nerves, made up of neurons.
Epithelial tissue are present on the surfaces the skin, the trachea, the reproductive tract, provide protection to organs.
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(1)Cells, like any factory, need energy to operate.
(2)Two different kinds of cellular power plants have evolved: some cells absorb energy directly from the sun, while others gather energy by eating other organisms that have stored it.
(3)Plants acquire energy directly from sunlight through the process of photosynthesis.
(4)In this process, molecules of chlorophyll or related pigments absorb photons from the sun.
(5)The photons’ energy is converted into chemical energy that the plant can use to grow and reproduce.
(6)In the course of this rather complicated chemical process, carbon dioxide and water from the cell’s surroundings are converted into glucose plus oxygen.
(7)The net effect of photosynthesis, then, is to remove carbon dioxide from the air, produce energy for the cell, and give off oxygen as a waste product.
(8)Animals, unlike plants, cannot convert the sun’s energy directly to food, and therefore must get theirs by eating plants or by eating animals that eat plants.
(9)The food you eat contains energy in the form of the bonds that hold its molecules together.
(10)After the food has been broken down, it is taken into the cells, where its energy is released by a process called respiration.
(11)This process allows molecules like glucose to combine with oxygen, thereby releasing the energy tied up in the molecular bonds.
(12)Its waste product is carbon dioxide, which you breathe out.
In sentence 7, the word net means
a. sensible.
b. final.
c. unlikely.
d. negative.
Answers
Answer:
The answer is option B.
Final
Hope this helps you
The frequency of purple pollen cones is 0.34 in a population of Virginia pine (Pinus virginiana). In the same population, the frequency of four needles per fascicle is 0.67.
If these two traits are independent, what is the probability that a single pine tree has both purple pollen cones and four needles per fascicle? (calculate to 2 decimals)
Answers
Answer: P(p and f) = 0.23
Explanation: The frequency of a specific trait is also the probability of that trait appearing in that population. So:
Probability of purple pollen cones: P(p) = 0.34
Probability of four needles per fascicle: P(f) = 0.67
Using multiplication rule:
P(p and f) = P(p)*P(f)
P(p and f) = 0.34*0.67
P(p and f) = 0.23
The probability of having both purple and four needles is 0.23
QUESTION 20 "Nitrous acid causes all possible transitions (A<-- -->G, C<-- -->T). If a protein has an alanine at position 65, what amino acid(s) would be likely to replace alanine as a result of nitrous acid mutagenesis
Answers
Answer:
Explanation:
Nitrous acid mutation occurs when a Nitrogenous base is replaced by a keto group.
Alanine is replaced by hypoxanthine,
Cytocine is replaced b Uracil
Guanine is replaced by Xanthine.
Nitrous mutation often affects Adenine, Cytocine and guanine. The Nitrogenous base is changed into another substance(keto group)
Alanine at position 65 would be replace by hypoxanthine a keto group which is a form of nitrous mutation.
Other forms of amino acid mutation
Mutation of amino acid nitrogenous base can either be transition or transversion.
Transition is the substitution of a purine base by another purine base. Since purine are Adenine and Guanine
Pyrimidine is cytocine and thymine or Uracil. Adenine can be substituted for by guanine or guanine by adenine
E.G A - G now G - A where Guanine substitute Adenine
Whole transversional substitution can also occur which involve a purine been substitued for by a pyrimidine or pyrimidine by a Purine.
A - G
Now C-G where cytosine substitute Adenine.
The Frank-Starling law of the heart states that stroke volume is proportional to ________.
Answers
Answer:
end diastolic volume
Explanation:
The Frank-Starling Law states that the stroke volume of the left ventricle will increase as the left ventricular volume increases.
After duplication, at what point does a cell become two cells with identical DNA? starting in prophase end of anaphase end of cytokinesis
Answers
Answer:
The correct answer is - end of cytokinesis.
Explanation:
Cytokinesis :- a procedure that partitions the cytoplasm and plasma layer of a cell, bringing about two indistinguishable cells that contain their own DNA, nucleus, nuclear membrane, and plasma membrane.
During the last phase of the cell cycle, cytokinesis permits the cell to complete the process of isolating, making two cells with indistinguishable duplicates of DNA
The cell squeezes in the equator area with the assistance of a ring of contractile protein filaments. The formed cleavage furrow develops until the two cells squeeze off totally.
Thus, the correct answer is - end of cytokinesis.
Answer:
end of cytokinesis
Explanation:
_____ combines the isolated gene of one organism with the DNA of a different organism.
Answers
Answer:
A transgenic, or genetically modified, organism is one that has been altered through recombinant DNA technology, which involves either the combining of DNA from different genomes or the insertion of foreign DNA into a genome.
Explanation:
Answer:
Recombinant DNA
Explanation:
Match the foods with their functions in the living organisms they come from.
1. tuna
2. milk
3. potato
4 . lettuce
5. black bean
6. egg
A. leaf from a plant; site of photosynthesis
B. a seed containing the embryo and food reserve
C.a high nutrient liquid produced by mammals
D.energy storage for plant
E. an energy supply for a growing embryo
F.the skeletal muscle used for voluntary movements
Answers
Answers:
1 - F
2 - C
3 - D
4 - A
5 - B
6 - E
Explanation:
tuna - the skeletal muscle used for voluntary movements.
milk - a high nutrient liquid produced by mammals.
potato - energy storage for plant.
lettuce - leaf from a plant; site of photosynthesis.
black bean - a seed containing the embryo and food reserve.
egg - an energy supply for a growing embryo.
Organize the levels of organization in the human body from the smallest (left) to the largest (right) component.
organ
organ system
cell
tissue
Answers
Answer:
Cell, Tissue, Organ, Organ System
Explanation:
Cell, tissue, organ and organ system are the levels of organization in the human body from the smallest to the largest component.
What is cell?Cell is the basic structural and functional unit of an organism.
What is tissue?Tissue is formed by the group of cells.
What is organ?Organ is formed by the group of tissues.
What is organ system?Organ system is formed by the group of organs.
What are levels?Levels are the arrangements.
What is organization?Organization is the hierarchy of biological systems.
Therefore those are the organization levels in the human body.
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What kind(s) of cells can develop from totipotent stem cells?
O A. Only cells that are identical to the original stem cell
B. Only cells that are closely related to the original stem cell
C. Any cells of the human body, but not cells of the placenta
D. Any cells of the human body or the placenta
Answers
Answer:
D.
Explanation:
Totipotent cells can make any of the 220 cell types in an embryo, as well as the cells found in a placenta!
Any cells of the human body or the placenta can develop from totipotent stem cells. Therefore, the correct option is D.
Totipotent stem cells have the unusual ability to differentiate into any type of human body cell, including placental cells. They have the ability to generate all types of cells, including endoderm, mesoderm, and ectoderm, the three basic germ layers. Because of their potential for development, totipotent stem cells can produce both extra-embryonic and embryonic tissues. Although cells produced from totipotent stem cells can differentiate into any cell type, due to maturation and specialization processes, they are not always identical to the original stem cell.
Therefore, the correct option is D.
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