Answer:
the mass of an object is the amount of material it contains.
Weighing is more accurate than volumn measurement.
in measuring dry ingredients,it should level with th back of a knife.
4
5
if the adjacent tryptophan codons in the trp operon leader sequence are mutated to alanine codons, what is the predicted effect on trp operon regulation?
Attenuation may occur in response to high alanine levels.
What is Attenuation?Given that transcription and translation occur simultaneously in bacteria, attenuation is a suggested regulatory mechanism in some bacterial operons that results in the premature termination of transcription. A provisional stop signal, found in the DNA segment corresponding to the mRNA leader sequence, is involved in attenuation.
The ribosome gets stuck inside the attenuator region of the mRNA leader during attenuation. The attenuator either blocks production at that point or permits read-through to the structure gene portion of the mRNA and the production of the appropriate protein depending on the metabolic diseases.
Attenuation is a regulation mechanism that causes premature transcriptional termination and is present in all Archaea and Bacteria.
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How can a particular trait be both advantageou and disadvantageous?
Answer:
An organism that develops a trait that helps it survive in its environment will have a better chance of reproducing and passing that trait on to the next generation. As a consequence, organisms with this helpful trait will become more prominent while other organisms of the same species die out.
Explanation:
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in a consecutive sample of patients referred to a treatment program for substance abuse after TBI, nearly 20% of patients had been light drinkers or abstainers prior to the injury, and showed heavy use after injuryZ.M. Weil et al. / Neuroscience and Biobehavioral Reviews 62 (2016) 89–99 91
Please help to formulate a well-sculpted statement/point.
Statement: A significant proportion of patients referred to a substance abuse treatment program after Traumatic Brain Injury (TBI) experienced a transition from light drinking or abstinence to heavy alcohol use following the injury.
The statement highlights a finding from a study by Z.M. Weil et al. published in the journal Neuroscience and Biobehavioral Reviews in 2016. The study investigated patients who had undergone treatment for substance abuse after TBI. The statement indicates that approximately 20% of these patients had a history of being light drinkers or abstainers before their brain injury. However, after the injury, they exhibited a shift toward heavy alcohol use.
This finding is significant as it suggests a link between TBI and changes in alcohol consumption patterns. The transition from light drinking or abstinence to heavy alcohol use may be influenced by neurological and psychological factors associated with brain injury. Understanding this relationship can have implications for the development of targeted interventions and support for individuals who have experienced TBI to prevent or address substance abuse issues.
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Will award points and give Brainliest answer asap
Evaluate the following argument from a Darwinian perspective: Humans are still evolving, I am a human. Therefore, I am evolving. True or False?
Answer:
True i think
Explanation:
Where is cranial nerve 2?
Cranial nerve 2, also known as the optic nerve, is located in the head and is one of the twelve pairs of cranial nerves that originate in the brain.
It is responsible for transmitting visual information from the retina of the eye to the brain, allowing us to see and perceive the world around us.
The optic nerve begins at the back of the eye, where the axons of the retinal ganglion cells converge to form the optic disc or optic nerve head. This is the point where the nerve fibers exit the eye and travel through the skull via the optic canal, a bony tunnel located in the sphenoid bone of the skull.
Once inside the skull, the optic nerves from each eye join together at the optic chiasm, a cross-shaped structure located at the base of the brain, just below the hypothalamus. At the optic chiasm, the nerve fibers from each eye partially cross over to the opposite side of the brain, before continuing on as the optic tracts, which ultimately connect to the visual cortex in the occipital lobe of the brain.
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Which of these is different from the others? NSF, UL, ASNI, TLE
The item that is different from the others is TLE. Therefore the correct optionis option D.
The National Sanitation Foundation, UL (Underwriters Laboratories), and ANSI (American National Standards Institute) are all organisations that create and maintain product safety and performance standards. They are all well-known organisations involved in the testing, certification, and accreditation of a wide range of products and industries.
TLE, on the other hand, is not an organisation that sets criteria for product safety and performance. TLE is difficult to define without more context, but it is not tied to product safety and performance requirements like the other organisations.
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What type of landscape made up most of the land during the Carboniferous period
Answer:
Characteristic of the Carboniferous period (from about 360 million to 300 million years ago) were its dense and swampy forests, which gave rise to large deposits of peat. Over the eons the peat transformed into rich coal stores in Western Europe and North America. The name "Carboniferous" refers to this coal.
Explanation:
What animal did the SARS-COV2 virus come from?
Answer:
bat
Explanation:
Which of the following environmental factors belongs to biotic factors? 1. Wind 2. Salinity 3. Soil moisture 4. Microorganism
Answer:
4. Microorganism
Explanation:
Wind, Salinity, Soil moisture are abiotic factors, non living things.
why are echinoderms more advanced than arthropods and mollusks?
Name the organelles.
Answer:
A: Nucleus
B: Cytoplasm
C: Vacuoles
D: Cell Membrane
E: Mitochondria
Explanation:
in the evolution of the mammalian y chromosome, which is assumed to have occurred?it evolved from an autosome.it evolved from a barr body that underwent multiple rounds of replication.it evolved from an ancestral y chromosome found in insects such as drosophila.it evolved from an x chromosome found in some birds.it evolved from the fusion of two x chromosomes
In the evolution of the mammalian Y chromosome, it is assumed that: it evolved from: option (A) states an autosome.
An autosome is a non-sex chromosome that is found in all mammals and contains the genetic information that helps to determine physical traits. The Y chromosome is believed to have arisen from an ancestral Y chromosome, which was found in insects such as Drosophila.
This ancestor Y chromosome underwent multiple rounds of replication and underwent mutations that led to the creation of the mammalian Y chromosome. The Y chromosome contains genes that determine the sex of an individual, such as the SRY gene.
The Y chromosome is structurally and functionally different from the X chromosome, which is found in some birds. The X chromosome is not believed to have contributed to the formation of the mammalian Y chromosome.
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If one of your parents is blood type A and the other is blood type B, which of the following blood types would you likely be? any of these A AB O
If one of your parents is blood type A and the other is blood type B, then you are likely to be of blood type AB. Blood types are determined by the presence of antigens and antibodies in the blood. The ABO system is the most well-known blood typing system, and it categorizes blood types into four categories: A, B, AB, and O. The Rh system, which is sometimes used in conjunction with the ABO system, further categorizes blood types as Rh-positive or Rh-negative. Blood type inheritance is governed by genes that come from both parents. A person's blood type is determined by the specific combination of their parent's genes. When a gene is dominant, it will be expressed in the offspring, while when a gene is recessive, it will only be expressed if both parents pass it on. If one of your parents is blood type A and the other is blood type B, then you are likely to be of blood type AB. In this instance, your blood would contain both A and B antigens, making it AB blood. Blood type A or B may also be present in the population, but blood type O is not possible as both parents would have to carry two O alleles to produce an O offspring.
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if you find a brightly colored insect resting on a leaf, it is most likely to be
A. Poisonous
B. Harmful to plants
C. A predator of other insects
D. Harmful to humans
E. A pollinator
Answer: A
Explanation: most bright colored animals are poisonous
Answer:
A. Poisonous
Explanation:
If you find a brightly colored insect resting on a leaf, it is most likely to be poisonous. Any insects that are brightly colored is a warning to predators that they’re toxic.
Gause's experiments with populations of different species of Paramecium show that: a competitive exclusion can result in the extinction of a species b. species will always equally subdivide a limiting resource o character displacement will always prevent extinction of a species d. niche theory does not always hold true e. one species did not eat the same bacteria
Gause's experiments with populations of different species of Paramecium show that a competitive exclusion can result in the extinction of a species. The correct answer is a. Competitive exclusion can result in the extinction of a species.
Gause’s experiments were conducted with two different species of Paramecium (P. caudatum and P. aurelia) grown in isolation in a culture media consisting of the same bacterial species. The results of the experiment showed that P. caudatum died off when grown in competition with P. aurelia, which was attributed to competitive exclusion, resulting in the extinction of one species. The other species subdivided the resource equally.
As a result, a competitive exclusion can result in the extinction of a species. Competitive exclusion is the process by which two species compete for the same resource, leading to the extinction of one of the species. It is one of the fundamental concepts of ecology, and it plays a crucial role in shaping the structure and dynamics of ecosystems.
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What is the term for a heritable feature that allows an organism to survive better
in its environment?
A) homologous structure
B) vestigial structure
C) adaptation
D) variation
DNA polymerases also have nuclease activities. Which of the following is not a use for the nuclease activity of DNA polymerase I?
-proofreading during synthesis
-trimming single-stranded ends
-removal of RNA primers
-degradation of viral DNAs
-removal of DNA lesions during repair
The use of the nuclease activity of DNA polymerase I that is not related to its function is degradation of viral DNAs. DNA polymerases have nuclease activity that helps in proofreading during synthesis, trimming single-stranded ends, removal of RNA primers, and removal of DNA lesions during repair.
DNA polymerase I has both 5' to 3' polymerase and exonuclease activity, which enables it to remove RNA primers and to proofread during DNA synthesis. The 3' to 5' exonuclease activity of DNA polymerase I helps in removing DNA lesions during repair by cutting out the damaged nucleotides from the strand. Additionally, it can also trim single-stranded ends during DNA replication, which is required to create blunt ends for ligation in cloning procedures. However, DNA polymerases do not have a specific nuclease activity for the degradation of viral DNAs. Thus, the nuclease activity of DNA polymerase I is primarily involved in DNA synthesis, repair, and modification and not degradation of viral DNAs.
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Why do you think it is important that our bodies can respond to stimuli around us?
Answer: it is important that our bodies can respond to stimuli around us because without it, you wouldn’t be able to detect and respond to changes in their internal and external environment. Cells called receptors, which detect stimuli (changes in the environment). The stimuli is part of our control system, it is very vital.
The hormone in males that induces the spermatogonium to begin cell division is.
The hormone in males that induces the spermatogonium to begin cell division is called the follicle stimulating hormone
What is the complimentary DNA sequence
for each of the following:
a) 5' TCGTAGGCT 3'
b) 3' CCGAATGCAT 5'
Answer:
a) 3' AGCATCCGA 5'
b) 5' GGCTTACGTA 3'
Explanation:
Based on complementary base pairing rules, T pairs with A, whereas C pairs with G.
In addition, because complementary strands run in complementary opposing directions, if the original sequence is in the 3' → 5' direction, our new strand is in the 5' → 3' direction, and the opposite for the original sequence that starts in the 5' → 3' direction.
why If a fire destroys all the above-ground vegetation, the bracken will still grow
Answer:
If a fire destroys all the above-ground vegetation, the bracken will still grow because bracken ferns have underground structures called rhizomes that are able to survive the fire and regrow from the surviving rhizomes. Bracken ferns are also able to release spores of their rhizomes that can grow into new plants. This means that even if the above-ground foliage is destroyed, the plant will be able to regrow from the surviving rhizomes. Additionally, bracken ferns are able to quickly colonize areas of disturbed land, such as those affected by a fire, making them a dominant species in many post-fire landscapes.
is mitochondria a plant cell animal cell or both
Answer:
both, because mitochondria is responsible for making ATP, and both plants and animals need ATP to survive.
A horse galloped at 40 km/hr, then it began to slow down. The horse slows down at 20km/hr. We know the kinetic energy of the horse (1 BLANK) by a factor of (2BLANK). The relationship between kinetic energy and speed is (3 BLANK).
1 blank: increased , decreased, or stayed the same
2 blank: 2x, 4x, 1/2x, 1/4x
3 blank: directly proportional, linear OR square, nonlinear
Answer:
decreased, 1/2x, linear
Explanation:
A horse galloped at 40 km/hr, then it began to slow down. The horse slows down at 20km/hr. We know the kinetic energy of the horse decreased by a factor of 1/2x. The relationship between kinetic energy and speed is linear.
What is average speed?The average speed has been defined as the total distance traveled by the object in a particular time interval. The average speed is a scalar quantity.
Kinetic energy has been defined as the energy of the object that occurs due to the motion of the object. The total work needed by the body to starts accelerating it by the help of given mass which has supplied from the rest position and its mentioned velocity.
The energy body gets due to the process of acceleration by this the body will able to main the kinetic energy of the body without changing the speed of the body. The energy which has been stored in the body or any object by the help of the particular position or the proper arrangement of the parts is known as potential energy.
There will be no effect of the outside environment on the potential energy that present inside the body. The kinetic energy decrease or increase with change in the velocity.
Therefore, A horse galloped at 40 km/hr, then it began to slow down. The horse slows down at 20km/hr. We know the kinetic energy of the horse decreased by a factor of 1/2x. The relationship between kinetic energy and speed is linear.
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Acids are corrosive
True
False
Answer:
True
Explanation:
Acid is naturally corrosive in nature.
More stronger an acid is, the more corrosive it is.
Answer:
its true !!!!!!!!!!!!!
What best describes the radiation emitted from the sun?
A. It travels at different speeds
B. It is made up of one type of electromagnetic wave
C. It is made up only of yellow light
D. It is made up of different frequencies of light
Answer: B. Radiation emitted from the sun contains one type of electromagnetic wave .
Because the earth has only a fixed amount of carbon, it is important that it gets recycled through the
Answer:
PLANTS
Explanation:
PHOTOSYNTHISIS
What cell structure do some eukaryotes and plant cells have that eukaryote animal cells do NOT have?
1. cell membrane
2. cell wall
3. ribosomes
4. cytoplasm
Answer:
The answer is 2.cell wall
Explanation:
Cell wall is only present in plant cell because it provide shape and rigidity to the plant cell and it allow any kind of substances to enter through it.
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select the correct answer from each drop down menu
complete the sentence about sea floor spreading
seafloor spreading is caused by ___ (divergent, convergent, transform) boundaries and results in ___ (more continental land, mountains on land, mid ocean ridges)
Answer:
divergent,mid ocean ridges
Explanation:
the seafloor diverge from each other causing the land to go thinner and thinner and thinner and make an opening between the floors and continue to move away from each other until they touch a more firm land to be able to stop, then the mid ocean ridges come between the floors where inside there is water and on the side there are the ridges
Scientists often ask questions to clarify data or guide scientific research. What are two scientific questions you have that could clarify relationships about the DNA or traits of these orchids?
Answer:
Plato
Explanation:
What traits would orchids have if the MADS-box genes were not duplicated?
If a genetic mutation changed the shape of the flowers, would pollinators still be attracted to orchids?
The two scientific questions that should have been asked about the DNA or traits of these orchids are:
1. What generations are these orchids?
2. What is the meaning of DNA?
What are scientific questions?A scientific question is one that can be answered and put to the test and explains a specific component of a larger investigation into nature. It is written in a way that responds to a scientific investigation.
An additional question cannot be appended to a scientific inquiry because it is too broad or complex. Instead, it looks for a solution to a specific facet of a more general topic.
The question can be resolved using conventional scientific methods. It should also be possible to duplicate it using the tools and procedures described in any international standard laboratory.
Therefore, the scientific questions are
1. What generations are these orchids?
2. What is the meaning of DNA?
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Eva investigates the number of daisy plants growing on the school playing field.
She uses a quadrat to count the number of daisy plants growing in different areas of the
field.
The table shows her results.
quadrat
1
2
3
4
number of daisy
plants
8
2
7
Each quadrat has an area of 0.25 m².
The school playing field has an area of 15000 m².
Estimate the population of daisy plants growing on the school field.
Eva investigates the number of daisy plants growing on the school playing field and uses a quadrat to count the number of daisy plants growing in different areas and the total number of plants in the field is 330,000.
What is the population density?
The population density explains the total number of individuals present in a given area, as the density of the population of an area may increase or decrease based upon the availability of foods and the climatic conditions.
Hence, Eva investigates the number of daisy plants growing on the school playing field and uses a quadrat to count the number of daisy plants growing in different areas and the total number of plants in the field is 330,000.
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The question is incomplete, the complete question is the below
Eva investigates the number of daisy plants growing on the school playing field.
She uses a quadrat to count the number of daisy plants growing in different areas of the
field.
The table shows her results.
quadrat
1
2
3
4
number of daisy
plants
8
2
7
5
Each quadrat has an area of 0.25 m².
The school playing field has an area of 15000 m².
Estimate the population of daisy plants growing on the school field.
a)682
b)82500
c)330000
d)1320000