Bacteria sample A utilizes citrate while sample B does not.
What is the result of a simmons citrate agar?Simmons citrate agar is a nutrient agar which contains the compound sodium citrate as a carbon source for microorganisms.
It is used to differentiate bacteria based on their use of citrate as a sole source of carbon.
A positive result for for citrate utilization will change the agar from green to blue while a negative result will remain green.
Therefore, since bacterial sample A produced a blue color while sample B agar remained green, A utilizes citrate while B does not.
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Water in central taxis comes from the Edwards aquifer tends to be hard which of the following would you expect to find in this water
The hard water from Edwards aquifer will likely contain dissolved calcium trioxocarbonate (iv) or magnesium and calcium tetraoxosulphates (iv).
What is hard water?Hard water refers to water that contains dissolved minerals in it.
The hardness of water may be temporary or permanent hardness.
Temporary harness is caused by trioxocarbonates of calcium in water.
Permanent hardness is caused by magnesium and calcium tetraoxosulphates.
Thus, the hard water from Edwards aquifer will likely contain dissolved calcium trioxocarbonate (iv) or magnesium and calcium tetraoxosulphates (iv).
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Match the following. Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer. ResetHelp 1. : Chemical or mechanical process of breaking down foodstuffs into simpler units. 2. : Wavelike smooth muscle contractions that move foodstuffs through the alimentary tube. 3. : Enzymatic breakdown of any type of food molecule. 4. : Process by which simpler chemical units pass through the lumen of the gastrointestinal tract into the blood or lymph.
Matching the following words to the appropriate blanks
Digestion is Chemical or mechanical process of breaking down foodstuffs into simpler units Peristalsis is Wavelike smooth muscle contractions that move foodstuffs through the alimentary tube Hydrolysis is Enzymatic breakdown of any type of food molecule Absorption is process by which simpler chemical units pass through the lumen of the gastrointestinal tract into the blood or lymph Processes of the digestive systemThe terms associated with the sentences listed are the various processes of the digestive system and they are Digestion ( a process of breaking down consumed food into simpler units for absorption ), Peristalsis, hydrolysis and Absorption which is the last phase of the digestive system.
During absorption the chemical units from the digested food passes through the lumen of the gastrointestinal tract into the blood where they are used by the body for the growth and daily activities of the body.
Hence we can conclude that the words matching the sentences are as listed above
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The missing words matched to the blanks
HydrolysisAbsorption DigestionPeristalsisBeverly and Carl are in a race. Their graphs show the data.
A graph with horizontal axis time (seconds) and vertical axis velocity (meters per second). An orange line labeled Beverly starts at 0 seconds 0 meters and goes straight to 10 seconds 15 meters and then to 50 seconds 35 meters. A blue line labeled starts at 0 seconds 0 meters and goes straight to 10 seconds 10 meters and then to 50 seconds 30 meters.
Which best describes the race?
Even though for a majority of the race they accelerated at the same rate, Beverly won because hethe r initial acceleration was greater than Carl’s.
How, explain your answer?The given parameters are listed as follows:
For Beverly: initial time of motion, t₁ = 10 s
initial velocity, u = 15 m/s
final time of motion, t₂ = 50 s
final velocity, v = 35 m/s
For Carl: initial time of motion, t₁ = 10 s
initial velocity, u = 10 m/s
final time of motion, t₂ = 50 s
final velocity, v = 30 m/s
In summary, Beverly and Carly had the same average acceleration for the majority of the race but the initial acceleration of Beverly was higher than that of Carl, hence Beverly won the race.
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Answer: c
Explanation: Even though for a majority of the race they accelerated at the same rate, Beverly won because her initial acceleration was greater than Carl’s.
What is a spring tide? When and why does it occur?
Answer:
Spring tides happen just after every full and new moon, when the sun, moon and earth are in line. That's when lunar and solar tides line up and reinforce each other, making a bigger total tide.
A spring tide occurs when there's a new or full moon. Because it follows the moon's lunar cycle, a spring tide happens twice per month. With the moon and sun roughly aligned the tides of Earth are on average slightly larger than usual.
source: https://ntslf.org › about-tides › tides
Which energy transformation occurs in the 2nd step of photosynthesis?
Who was the first person to classify organisms into two groups
The first person to classify organisms into two groups was Aristotle, but Lineu was recognized as the father of taxomy
Who were the main scholars of biological classification?One of the central figures in the history of biological classification was the Swedish naturalist Carl von Linné, popularly known in our country as Linnaeus (1707-1778). His classification system encompassed all organisms and was based on the similarities between them.
Moreover, Aristotle, as far as is known, was the first to classify living beings. He divided them into two groups: animals and plants.
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write the categories of classification in hierarchical sequence
Answer:
these are the seven taxonomic units:
Kingdom -it has the largest number of members and also the largest taxonomic unit
phylum (animals)/division (plants)
class
order
family
genus
species-it has the least number of members who freely interbreed to give rise to an infertile of spring
Explanation:
hope you got it! if there's any question feel free to ask .good day.
Answer:
Kingdom
Phylum/division
Class
Order
Family
Genus
Species
Explanation:
formulae
King
Philip/David
Can
Order
For
Green
Soaps
Assertion (A): A proton gradient cannot be established in the mitochondria.
Reason (R): Hydrogen molecules are pumped out of an internal space (the matrix) in the mitochondria.
Which of the following is TRUE for the above statements?
Both (A) and (R) are true, and (R) is the correct explanation of (A)
Both (A) and (R) are true, but (R) is not the correct explanation of (A).
(A) is false, but (R) is true.
(A) is true, but (R) is false.
Based on the nature of proton gradient, (A) is false, but (R) is true.
What is a proton gradient?A proton gradient is a gradient that exists due to difference in proton concentration between the inner and outer mitochondrial matrix.
An assertion is a statement or claim stating a given position.
Assertion (A): A proton gradient cannot be established in the mitochondria.Reason (R): Hydrogen molecules are pumped out of an internal space (the matrix) in the mitochondria.The assertion, A, is false because a proton gradient is established in the mitochondria due to the function of the proton pump which pumps out protons from the inner mitochondrial matrix to the outer membrane.
The reason, R is true as hydrogen molecules are pumped out of an internal space (the matrix) in the mitochondria by the proton pump.
Therefore, (A) is false, but (R) is true.
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Dihybrid crosses
1. In man, assume that spotted skin (S) is dominant over non-spotted skin (S) and that wooly hair (W) is dominant over non-wooly hair (W). cross a marriage between a heterozygous spotted, non-wooly man with heterozygous wooly-haired, non-spotted woman. Give genotypic and phenotypic ratios of offspring?
Explanation:
The phenotypes and genotypes of the progeny can be determined by a dihybrid cross of the parents.
The heterozygous male will have the genotype 'SSww' and the heterozygous female will have the genotype 'ssWW'.
When crossed, the F1 offsprings will have a hybrid genotype of 'SsWw'. These offsprings are heterozygous with spotted skin and wooly hair.
On self-crossing of the F1 hybrids, we find four different combinations of the alleles- SW, Sw, SW and sw. The probability of getting each of these combinations is 1/4.
Hence, the probability of any dihybrid type is 1 out of the 16 possible genotypes. Using Punnet square, we find
9 SSWW: 3 SSww: 3 ssWW : 1 ssww
This is the phenotypic ratio of the offsprings.
The ratio of the possible genotypes will be 1:2:1:2:4:2:1:2:1.
Which structure is found only in plant cells and
functions in the process of photosynthesis?
a) W
b) X
c) Y
d) Z
Thank you.
Answer:
B) Chloroplast
Explanation:
Chloroplasts are the organelle of photosynthesis. They make and store pigments that give petals and fruit their orange and yellow colours.
I hope this helps and have a good day!
The bacterial species Heliobacter pylori has been associated with the formation of stomach ulcers. The bacteria burrows into the mucosal lining of the stomach, degrading it and forming a hole. What type of innate defense is this bacteria overcoming
The type of innate defense this bacteria is overcoming is referred to as mechanical barrier.
What is Innate defense?This is referred to as the defense system which came with birth and they help protect the body from antigens.
The bacteria in this context also functions this way through overcoming mechanical barriers to attack the party of the body involved.
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which type of study that a student is doing by exploring the external features of an animal
Answer:
analyzing behaviors of living animals with a common ancestry
analyzing embryos and skeletons of animals of the same species
analyzing DNA sequences and embryonic development
analyzing the the fossilized remains of animals from different time periods
A biodiversity hotspot is a region that has lost at least
Answer:
diversity throughout all living organisms
What types of isolation lead to the formation of new species?
Help ASAP!!!!
I need to turn it in as soon as possible.
you have 30min to figure this out.
Thank you :)
Which compound refer to those that are produced by plants or animals?
Natural compounds
Synthetic compounds
Biotechnology
None of the above
natural compounds I mean all organic compounds
Explanation:
many organic compounds are obtained directly from the plants and animal sources by suitable method of installation a few filling here example are carbohydrate cellulose sugar and starches for prediction of hunters of useful organic substances such as solved synthetic rubber explosive and plastic
Which of these cell organelles is MOST
like a post office in that it receives,
packages/modifies, then sends
proteins and other cellular material?
the mitochondria
the Golgi body
Answer:
the golgi body
Explanation:
the golgi body
Answer:
Golgi body receives, packages/modifies, then sends proteins and other cellular materials to various destinations. So, it is MOST like a post office.
Explanation:
The Golgi bodies are made up of 4 to 8 cup-shaped, series of compartments known as cisternae which are flattened, disk-shaped, stacked pouches and connected by tubular connections.
Golgi bodies has following functions:
Its main function is the packaging, modification and secretion of proteins. It receives proteins from Endoplasmic Reticulum. It packages it into membrane-bound vesicles, which are then transported to various destinations, such as lysosomes, plasma membrane or secretion. They also take part in the transport of lipids and the formation of lysosomes.Enzymatic processing and post-translational modification occur near the membrane surface in Golgi bodies, e.g. phosphorylation, glycosylation, etc.Golgi apparatus is the site for the synthesis of various glycolipids, glycoproteins, etc.#SPJ2
the diagram below shows several of the processes involved in the carbon cycle, but they are not labeled. use the labels to correctly identify each process
Photosynthesis, Decomposition, Respiration and Combustion are the processes involved in the carbon cycle.
What are the processes of carbon cycle?The processes that are involved in carbon cycle are Photosynthesis, Decomposition, Respiration and Combustion. Photosynthesis occurs only in plants whereas respiration occurs in all organisms.
Decomposition done by bacteria and fungi on the dead bodies of organisms whereas combustion occurs when the a material is burnt.
So we can conclude that Photosynthesis, Decomposition, Respiration and Combustion are the processes involved in the carbon cycle.
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The labels to correctly identify each process is
Photosynthesis Breathing in animalsrespiration Using up precious fossil fuels natural combustionThis is further explained below.
What is carbon cycle?The process through which carbon atoms constantly go from the atmosphere to the surface of the earth and again back into the atmosphere is referred to as the carbon cycle.
Generally, Photosynthesis is simply defined as photosynthesis is the green pigment and other creatures create nutrition from carbon dioxide and water using sunlight
In conclusion, To put it another way: photosynthesis (by the patch of grass) breathing in animals (on top of the bull) Taking a breath (on top of the tree) using up precious fossil fuels (on top of the factory) just burning up in the atmosphere (by the small fire)
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What are some examples of jawed vertebrate fish?
Jawed vertebrate fishes include bony fishes, sharks, rays, and skates.
Jawed fishesJawed fishes are of two classes, namely:
Chondrichthyes: the cartilaginous fishes that include sharks, rays, and skatesOsteichthyes: the ray-finned and lobe-finned fishes which include bony fishes such as tilapia, tuna, salmon, etc.More on jawed fished can be found here: https://brainly.com/question/1078864
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Which of the following form(s) zygote (2n)?
Sperm + Ovum
n + n
Male gamete + Female gamete
All of the choices
Answer:
All of the choices
Explanation:
The n stands for 23 chromosomes, every cell has 46 chromosomes so 2n.
Male and female gametes have just n (23 chromosomes)
n + n = 2n
sperm and ovum are synonyms for the gametes
As an individual ages, new neurons and dendrites appear, but others atrophy. Compared to when they were adolescents, adults have fewer neural connections and their brain size _____ as they continue to age.
The brain and central nervous system shrink as we age.
What happens to the brain when we age?The brain is one of the most important organs in our body because all the nerve signals are produced there for our body to function.
In the brain we find nerve connections through neurons. A particular aspect of them is that during childhood and adolescence they multiply as we learn new things.
However, once we reach the stage of old age, these nerve connections deteriorate and are reduced, therefore, the size of the brain and the central nervous system decreases.
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The indigestible part of a plant is called ____. protein carbohydrates fats fiber
Roughage, also known as Dietary Fiber is the indigestible part of a plant.
Answer:
fiber
Explanation:
simply indigestible made of fiber tho
What are the defining characteristics of amphibians?
Amphibians represent a group of vertebrates that require water to survive.
AmphibiansThey are one of the major divisions of vertebrates along with fishes, birds, and mammals.
In addition to possessing the basic features of vertebrates, amphibians have the following characteristics:
They are cold-bloodedThey can breathe through their skin as well as using lungsThey need water for survivalReproduction is by laying eggs that are fertilized externallyThey are mostly carnivorousMore on amphibians can be found here: https://brainly.com/question/13744586
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High population densities in urban areas have advantages and disadvantages. List as many of each as you can and defend your conclusion. How could the disadvantages be eliminated or reduced? Use evidence to support your conclusion.
Advantages :- More human population so more workers in different fields,More economy growth,More tax payers, More funds, More diversity ,More share of people for particular programs.
Disadvantages ;- Burden on economy, More exploitation of natural resources, pollution, deforestation, More use of water resources, more competition for survival :) hope this helps thanks
Sample of practical recording
Aim:
Material required :
Procedure :
Observation :
Inference:
What do inhibitory neurotransmitters cause ?
According to the research, inhibitory neurotransmitters cause the diminution of an action potential.
What are neurotransmitters?They are substances used by neurons to transmit impulses within the nerve synapse, they drive and balance said signals.
It is involved in inhibitory effects on the neuron, decreasing the probability that it will fire an action potential.
Therefore, we can conclude that according to the research, inhibitory neurotransmitters cause the diminution of an action potential.
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The p wave on an electrocardiogram (ecg) represents the depolarization of cells in the:
The p wave on an electrocardiogram (ecg) represents the depolarization of cells in the sinoatrial (SA) node.
What is sinoatrial node?The sinoatrial node is close to the opening of the superior vena cava. This bundle of nerve tissue propagates electrical impulses and therefore governs sinus rhythm from minute to minute.
Electrocardiogram is a test, it is possible to detect the rhythm of the heart and the number of beats per minute.
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1.What is one cost and benefits of double window glazing?
2.what is one cost and benefit of green roof?
( Science teachers if you see this please answer )
Explanation:
1.Warmer in the winter – Double glazing is great for insulation, it can also help capture natural heat and store it in the winter. This is a great way of keeping your home insulated in the winter months.
Energy cost savings – Less energy is used up to heat or cool a room when double glazed windows are installed, this results in lower energy bills and money being saved. Adding more layers of glazing will increase the insulation levels and save more money.
Cooler in the summer – Double glazed windows can trap some of the rays coming through the windows on a hot summer’s’ day causing your room to be cooler. This means less air-conditioning is required.
Safety – With more units being on double glazed windows, the safety of your home increases. They are harder to break and are sealed tighter than other windows.
Less condensation – Double glazed windows reduce the amount of moisture on your window panes, as the airtight seal prevents the condensation from building up. Other windows often allow condensation to build up which causes window panes to have mould in.
Less noise – With more units comes less noise and a quieter home. If you live by busy roads or in a generally noisy area then double glazed windows are crucial to you
the second answer is photograph
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thanks for asking
On which structure do most neuron to neuron communications occur? group of answer choices
The structure on which most neuron to neuron communications occur is; Choice A; Structure 1.
Which structure is the site for most neuron to neuron communications?Neuron to neuron communications occur at junctions called synapses. At the synapse, a neuron interacts, more specifically, sends a message to another neuron. The synapses in discuss communicate using chemical messengers.
Remark;
A) 1
B) 2
C) 4
D) 3
E) 5
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A particular plant has two alleles that control the length of its stem. t represents the dominant allele that codes for a tall stem, and t represents the recessive allele that codes for a short stem. based on the punnett squares, which two statements are true about the genotype of the plant’s stem length?
A particular plant has two alleles that control the length of its stem. T represents the dominant allele that codes for a tall stem, and t represents the recessive allele that codes for a short stem. Based on the Punnett squares, which two statements are true about the genotype of the plant’s stem length?
First Generation
__t_ t
T Tt Tt
T Tt Tt
Second Generation
__T_ t
T TT Tt
t Tt tt
Select all the correct answers.
A) Plants with short stems are homozygous for that trait.
B) Plants with tall stems are always homozygous for that trait.
C) Both parent plants in the second generation are heterozygous.
D) Both parent plants in the second generation are homozygous.
The correct answers are options A and C.
How, explain your answer briefly?The Statement A says that the plants, which have a short stem is homozygous for the trait. According to the question, the allele for the short height is recessive. A recessive trait can only be observed, when the dominant allele is not at all present. Hence, the plant must have tt allele, so, the plant having short stem would be homozygous recessive.
The statement C says that the both parents in second generation are heterozygotes. It is given that the parents in the second generation have aa genotype Tt. In this case, both the alleles are different, hence, the parent plants are heterozygotes.
Thus, this could be the answer.
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Which of the following is a result of crossing over during meiosis?
O Gametes contain much less than one half of the genetic information of the parent that produced them.
Chromosomes with new combinations of alleles are created.
Gametes contain much more than one half of the genetic information of the parent that produced them.
O Dominant alleles tend to be inherited together.
Answer:
B) Chromosomes with new combinations of alleles are created