Answer:
The concentration of the molecule may be too low to be detected
Explanation:
Negative essay results do not always mean the molecule is absent because the amount or percentage of the molecule to be detected could be too less to detect.
What are the negative assay results?
False-negative blocks haven't received as much attention as false positives, but they can lead to misdiagnosis and improper treatment candidate selection. Based on the failure of local anesthetic infiltration to relieve the pain from facet joint capsular distention, research on 15 volunteers who had MBBs with local anesthetic or saline and capsular distention estimated the rate of false-negative blocks to be 11%.
It was determined that "aberrant innervation" was a likely explanation for some instances of unsuccessful RF denervation in IA block responders. Vascular uptake is regarded to be one of the main sources of false-negative blocks. According to reports, this can vary from 6% to 30% per level. rates of 3.9% at cervical levels, 3.5% at lumbar levels, and 0.7% at thoracic levels, according to one research.
According to one study, even if the needle is relocated when vascular uptake happens, analgesia will only be experienced 50% of the time. Digital subtraction angiography has been demonstrated to increase the detection rate and is the most reliable method of identifying vascular uptake. Failure to distinguish between procedure-related discomfort and baseline pain, as well as missing a target nerve or nerves, are other potential reasons for false-negative blocks.
Therefore, a false negative result could be the result of low concentration.
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qué ventajas le trajo al ser humano el poder andar en 2 patas.
Answer:
The advantage that hominids had when they developed bipedalism is truly great. Walking on two legs instead of four allowed hominids to free up their arms. Using their arms they could now make tools, stretch trees, and use their hands for social communication. The development of bipedalism also allowed for long-distance walking and eventually endurance running. Bipedalism, basically, was a key step for hominids' "brains to grow".
[tex]{\sf{\boxed{\boxed{\tt\green{Las \: ventajas}}}}}[/tex]
La gran cantidad de ventajas que trajo el bipedalismo significó que todas las futuras especies de homínidos llevarían este rasgo. El bipedalismo permitió a los homínidos liberar completamente sus brazos, lo que les permitió hacerEnglish:
The advantages
The host of advantages bipedalism brought meant that all future hominid species would carry this trait. Bipedalism allowed hominids to free their arms completely, enabling them to make and use tools efficiently, stretch for fruit in trees and use their hands for social display and communication.#CarryOnLearning
What does codominance mean in genetics?
Both alleles are dominant.
O Both alleles are recessive.
O The alleles are neither dominant nor recessive.
O Each allele is both dominant and recessive.
Answer:
Yes each abele is both dominant and recessive
Explanation:
Because it’s true
having hair on the back of the hand is dominant (H) and not having the hair is recessive (h) a mother has Hh and a father has hh if they have a child which genotype will make their child not have hair on there back of the hand?
Answer:
No, but when the person grows up then yes everyone should grow hair everywhere some pleople like that becouse then people would have more work to do.
Explanation:
Everyone should get extera work done, That is apart of life and no one should be ashamed of do stuff.
two examples of molecular biology
good morning
its jess..
your answer is here
human blood protein are most similar to chimpanzee among all apesOnly plants and some algae have chlorophyll so they are most closely relatedExplanation:
hope it may help u
How will hormone travel to its target organs?
A. Carried by neurons
B. Sweat glands
C. Carried by the blood
D. Carried in the digestive tract
Answer:
the answer is C no
Explanation:
It is the ans
Answer:
c
Explanation:
endocrine glands hormones directly into bliidstream
A scientist is studying a cell from an unidentified organism. Which of these observations of the cell provide evidence for classifying the cell as PROKARYOTIC and NOT EUKARYOTIC? Select all that apply
The cell has a cell wall.
The cell lacks mitochondria, chloroplasts, and other membrane-bound organelles.
The cell has a cell membrane.
The cell has ribosomes in its cytoplasm.
The cell lacks a nucleus.
Answer:
hfdjjjjjjhgjluhb
Explanation:
Explicar las diferencias entre el concepto de alimento y el de nutriente
Can someone please answer these multiple choice questions. (29 to 32) Will mark as brainliest.
Which of the following describes an adaptation that relates to reproduction?
A. Hawks have sharp beak to help them quickly catch their prey
B. Elks attach leaves and grasses to their antlers to help them appear larger
C. Polar bears have white fur to help them blend into their surrounding
environment
D. Whales have a thick layer of fat called blubber to help keep them warm
Answer:
Explanation:
A is the correct answer
As Elks attach leaves and grasses to their antlers to help them appear larger, it shows adaptation relating to reproduction, i.e., option B.
What is an Elk?The elk or wapiti is a species of deer included in the Cervidae family which is one of the largest terrestrial mammals in North America, Central, and East Asia.
Female Elks are generally attracted to the larger male Elk which aids in reproduction.
Thus, the correct option is B.
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how can we apply the principle of transpiration in producing clean water?
Explanation:
Transpiration is a process that involves loss of water vapour through the stomata of plants. The loss of water vapour from the plant cools the plant down when the weather is very hot, and water from the stem and roots moves upwards or is 'pulled' into the leaves.
Answer:
During photosynthesis, the layer of TiO2 absorbs light, breaking down toxic pollutants in the water, while the gold layer emulates the transpiration of a leaf and harnesses sunlight to evaporate the water at the surface. The resulting vapor condenses into completely-purified water.
Explanation:
Which of the following is true about the group Archaea?
A. Archaea has more genetic similarities to Bacteria than Eukarya
B. Archaea and Bacteria both have a nucleus
C. Bacteria and Eukarya are both prokaryotes
D. Archaea has more in common genetically with Eukarya than Bacteria.
Answer:
D. Archaea has more in common genetically with Eukarya than Bacteria.
Explanation:
Archaea are unicellular, prokaryotic microorganisms that differ from bacteria in their genetics, biochemistry, and ecology. Some archaea are extremophiles, living in environments with extremely high or low temperatures, or extreme salinity. Only archaea are known to produce methane.
Answer:
D. Archaea has more in common genetically with Eukarya than Bacteria.
Explanation:
Yes, archaea has more in common genetically with Eukarya than Bacteria. Archaea constitute a domain of single -celled organisms.
What is the evidence of variation when individuals in a population or group differ in some trait of interest
Answer:
When the more dominat trait starts to show up in most of the population while keeping the specis the same. This can be very benifitial to the population or harmful depending on the trait that is getting passed down.
Explanation:
explain why you would recommend the nguni cattle meat to consumers in your locality?
Answer:
Due to their natural growth.
Explanation:
I would recommend the meat of Nguni cattle to consumers in the locality because of their pure quality. These cattles have excellent resistance to internal and external parasites with natural immunity to kill borne diseases. There is no injections or vaccines are given to these cattles which enables them to grow in natural environment. So due to their natural growth, the meat have higher quality as compared to other cattle's meat.
cells are surrounded and protected by
Answer:
Plasma membrane or cytoplasm
Explanation:
Is digesting food a physical or chemical chnage?
Explain how you know what kind of chnage occurred
Answer: Digesting food is a chemical change.
Explanation:
Chemical changes cannot be undone so digesting the food is considered a chemical change.
Weeding is a cultural farmer’s practice? TRUE OR FALSE
Answer:
This is true.
Explanation:
All practices include:
mulching.
thinning out.
pruning.
stirring.
fertilizer application.
earthing-up.
pest control.
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If Charles Darwin could return to the Galapagos Island today, which of the following is an example of a change he might see?
O A. no changes
O B. more islands
O C. more tortoises
OD. new species of iguanas
If Charles Darwin could return to the Galapagos Island today, an example of a change he might see a new species of iguanas.
What are the discovery of Charles Darwin ?Charles Darwin has had many Discoveries are The Expression of Emotions in Humans and Animals. (1872) which explains how animals emotions are different from humans and how they express and different from us.
The Descent of Man (1871) where he explains how us and animals aren't different but extremely different, he also explains how we process things differently and how differently we live.
Darwin's Beagle Diary(1831 - 1836), here he explained about everything he sees and finds throughout his trip, showed how the animals live and how they adapt to the area.
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Identify what holds DNA, the hereditary information of a cell?
(Its not the nucleus)
PLEASE HELP!
Answer:
chromatin network or chromosomes
Choose the verb form that correctly completes the sentence.
Why_? you at work yesterday?
wasn't
aren't
weren't
isn't
Answer:
the answer is weren't
Explanation:
wasn't = was not
aren't = are not
isn't = is not
Kingdoms are a more specific (less broad) category in the taxonomic hierarchy.
A. True
B. False
true helpful answer to your question
Answer:
false
because if you actually order the levels of classification from MOST specific to LEAST specific, kingdom would be somewhere last.
shape size and any structures at the lowest magnification and record what you see under each magnification identify any cell structuresyou see
Hello. Unfortunately your question is incomplete, which makes it impossible for it to be answered. However, through the context, we can see that your question is asking you to describe the cellular structures that you can see through a microscope.
To answer this question, you will need to look at biological material under a microscope to see what cells this material has and the structures it has. To do this, you will need to determine what material you will be using. This material can be a leaf, flower, a piece of fruit, or any other material that contains cells. After choosing the material, you need to search for a protocol, a tutorial, that shows how this material can be prepared so that the cells can be visualized through a microscope. This protocol can be found on the internet and in articles. You must follow the entire protocol to the letter, to be able to identify the cellular structures.
pairing of density dependent and density independent
Answer:
Density-dependent regulation can be affected by factors that affect birth and death rates such as competition and predation. Density-independent regulation can be affected by factors that affect birth and death rates such as abiotic factors and environmental factors, i.e. severe weather and conditions
Explain the advantage of an increase in the number of mitochondria in slow twitch fibres. Include at least 2 points in your response
Answer:
To produce more ATP molecules.
Explanation:
The advantage of an increase in the number of mitochondria in slow twitch fibers is to provide more ATP is provided to the muscles. These large number of mitochondria is responsible for the production of large amount of ATP which is a fuel that is used by the muscles of the boy in order to continue working. There is high burden on the slow twitch fibres in order to continue its movement, more mitochondria is needed.
Rocky shore and sandy shore similarities
Crossing over occurs during Prophase II.
A. True
B. False
Answer:
B. False
Explanation:
Crossing over not occurs in prophase II. It occurs only during prophase I.
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Excess carbon dioxide in the lower atmosphere acts like a(n)_____, which traps solar energy and leads to the greenhouse effect
A. funnel
B. electrical wire
C. mirror
D. glass pane
Answer:
D
Explanation:
because a glass pane acts lIke an insulator , which does not allow heat to escape
Which level of organization is shown in the diagram?
Answer:
which diagram, tell
you haven't shown any diagram.
Answer:
Organ
Explanation:
This Is For Edgennuity Q:10
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They overgrazed on the parks vegetation and grasses.
What type of RNA acts as a temporary copy of DNA's instructions and provides details on how to assemble a polypeptide
chain?
Answer:
mRNA
Explanation:
There are three types of ribonucleic acid (RNA) viz: messenger RNA, ribosomal RNA (rRNA) and transfer RNA (tRNA). These three RNA types function differently from one another. mRNA is a type of RNA that conveys genetic information that was previously stored in DNA into the ribosome for translation i.e. synthesis of amino sequence.
In other words, mRNA acts as a temporary copy of DNA's instructions and provides details on how to assemble a polypeptide chain using the amino acid sequence that arise from translating it in the ribosomes.
How does convection cause ocean currents?
A. During the process of convection, energy is transferred to the atmosphere forming winds. These winds power surface currents.
B. During the process of convection, the heating of surface water by the sun results in upwelling.
C. During the process of convection, energy in warm water is lost to its surroundings. The water cools, becomes denser, and sinks.
D. During the process of convection, more minerals and gases dissolve in warm water. This increases the density of the warm water and causes it to sink.
Answer:
C. During the process of convection, energy in warm water is lost to its surroundings. The water cools, becomes denser, and sinks.
Explanation:
Convection refers to the process of transference of heat from one place to another by the movement of gas/liquid particles. Convection occurs when a gas or liquid substance is heated, thereby it expands (increase its volume) by gaining kinetic energy and moving far apart. Energy in the atmosphere and oceans is transferred mainly by convection. In the atmosphere, convection produces wind belts. Moreover, an ocean current is the result of the continuous movement of seawater caused by different forces acting upon the water (i.e., wind, the Coriolis effect, waves, temperature). In the oceans, convection produces currents because the seawater heats up becoming less dense and moves above cooler seawater, emitting heat during the process and causing the continual circulation of water.
Answer:
c
Explanation: