Answer: A
Explanation: :3
Example of Gateaway drugs
Depressants
Stimulants
Narcotics
Hallucinogens
Inhalants
Answer:
hallucinogens
Explanation:
they make one to hallucinate.
In the diagram, which organism is a producer?
all of these answer
dandelion
wheat
clover
Answer:
since it says producer im thinking maybe wheat because you can eat wheat, it has to be wheat
Explanation:
What does nucleotrophic mean?
If you know the answer to this question please help! 7th grade
need help asap
question 9
- 20 points
When shellfish ingest dinoflagellates, a) they turn red. b) they can become poisonous. c) they enter into a symbiotic relationship.
When shellfish ingest dinoflagellates, a) they turn red. So,correct option is a.
Red tides are conditions when a dinoflagellate ingest builds to such gigantic numbers that it stains the water. This "sprout" might be brought about by supplement and hydrographic circumstances, albeit the natural circumstances which bring about red tides are not totally perceived. For dinoflagellate red tides, the water is stained red or brown due to as high as 20 million cells for every liter. These red tides are made fundamentally out of one types of dinoflagellate that has been quickly developing and gathering.
The dinoflagellates are a monophyletic gathering of single-celled eukaryotes comprising the phylum Dinoflagellata and are generally viewed as green growth. Dinoflagellates are generally marine tiny fish, yet they likewise are normal in freshwater natural surroundings. Their populaces differ with ocean surface temperature, saltiness, and profundity. Many dinoflagellates are photosynthetic, yet a huge part of these are truth be told mixotrophic, consolidating photosynthesis with ingestion of prey (phagotrophy and myzocytosis).
Hence,correct option is a.
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Please help!! Need answers asap : )
Answer:
D
Explanation:
What happens during the reduction?
Common reduction techniques result in oxygen loss. For instance, the reduction reaction process is used to decrease ore.
To obtain metals, build electrochemical cells and transform ammonia into nitric acid. Redox reactions, or reduction-oxidation processes, are the simultaneous reduction and oxidation of chemical substances. Oxidized species lose electrons, whereas reduced species gain them. Even without oxygen present, oxidation can still take place. Oxygen has the chemical symbol O and an atomic number of 8. It belongs to the periodic table's chalcogen group and is a very reactive nonmetal.
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Which of the following images shows a transition from biosphere to the
atmosphere?
Answer:
I believe it is B
Explanation:
The biosphere is where life is, which has trees. The smoke from the trees is going into the atmosphere.
Got it wrong the first time, I’m not sure and I only have 1 attempt left
It’s not survive & reproduce, and die
As habitats change, some organisms survive and reproduce, move out of the habitat, die options are correct.
How do animals adapt to changing environmental conditions?There are only three ways for animals to respond to climate change: they can move, adapt, or die. In an effort to escape the warming temperatures, many animals are moving to higher altitudes and latitudes, but most species may not be able to outrun the changing climate in time.
Alteration of the local environmental conditions that a specific organism lives in. Natural occurrences that can change habitat include droughts, illnesses, fires, hurricanes, mudslides, volcanoes, earthquakes, slight variations in seasonal temperature or precipitation, etc.
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What was indicated in the Mendel's first hypothesis?
Mendel was greatly involved in the field of genetics, and provided first hypothesis or law named as law of segregation.
Mendel's First Law, also known as the Law of Segregation, states that the alleles for a trait separate during the formation of gametes and randomly unite at fertilization. This means that when two parents with different alleles for a trait produce offspring, each offspring will receive one allele from each parent. This law helps to explain why certain traits are inherited, as well as why the ratio of certain traits can be predicted.
The Mendel made all the observation for the hypothesis or law using Pea plant, that was the best model he selected by careful observation skill that he possessed. The Law of segregation was proven by the pea plant as plant producing violet flower having heterozygous condition could give rise to white flowers in next generation, confidently explaining the process of segregation.
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If LaL turns into a gel when exposed to a sample, it means the sample is contaminated with gram-negative bacteria
It is true that If LaL turns into a gel when exposed to a sample, it means the sample is contaminated with gram-negative bacteria.
Both the color and the turbidity of LAL are used to identify endotoxins. The mixture turns yellow when the kinetic chromogenic LAL reagent reacts with endotoxins. By looking for pyrogenic responses in horseshoe crab blood cells, this identifies the presence of bacterial endotoxins. The outer membrane of Gram-negative bacteria contains endotoxins. In order to ensure product safety and quality in the medical and pharmaceutical industries, their detection is essential. Gram-negative bacteria's outer membrane and cell wall are primarily made up of endotoxins.
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(complete question)
If LaL turns into a gel when exposed to a sample, it means the sample is contaminated with gram-negative bacteria.
true or false.
what enzyme can proof-read the dna molecule, minimizing the mistakes made during the process of dna replication?
DNA polymerase enzyme can proofread the DNA molecule, minimizing the mistakes made during the process of DNA replication.
Fortunately, cells have developed extremely complex mechanisms to correct most but not all of those errors. Some of the errors are fixed during replication in a step known as proofreading, while others are fixed in a step known as mismatch repair after replication. Replication is halted when an erroneous nucleotide is added to the developing strand because it has an exposed 3′-OH group that is in the incorrect location. DNA polymerase enzymes notice this during proofreading and swap out the wrongly inserted nucleotide to allow replication to proceed. About 99 percent of total corrections can be corrected through proofreading, but that is still insufficient for healthy cell activity.
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Which is an example of a recent development used to address food shortages in urban areas?
Answer:
A is answer
Explanation:
A recent development to address food shortages in urban areas is to create community gardens. The city usually sets aside a space for people to grow their own food.
Answer:
Its b.
Explanation:
What changes occur to voltage-gated Na+ and K+ channels at the peak of depolarization?
O Inactivation gates of voltage-gated Na+ channels close, while inactivation gates of voltage-gated K+ channels open.
O Inactivation gates of voltage-gated Na+ channels close, while activation gates of voltage-gated K+ channels open.
O Activation gates of voltage-gated Na+ channels close, while activation gates of voltage-gated K+ channels open.
At the peak of depolarization, voltage-gated Na+ and K+ channels undergo a series of changes. Specifically, the inactivation gates of voltage-gated Na+ channels close and the inactivation gates of voltage-gated K+ channels open.
This allows for the flow of Na+ ions into the cell and K+ ions out of the cell, thus creating an electrical potential difference across the plasma membrane. The closing of the inactivation gates of voltage-gated Na+ channels is an important step in depolarization, as it allows for the influx of Na+ ions into the cell.
This influx of Na+ ions causes the cell to become more positively charged and thus more depolarized. The opening of the inactivation gates of voltage-gated K+ channels also plays an important role in depolarization, as it allows for the efflux of K+ ions out of the cell. This efflux of K+ ions causes the cell to become more negatively charged and thus more depolarized.
In addition to the inactivation gates of voltage-gated Na+ and K+ channels, the activation gates of these channels also undergo changes at the peak of depolarization. Specifically, the activation gates of voltage-gated Na+ channels close and the activation gates of voltage-gated K+ channels open. This allows for the influx of Na+ ions into the cell and the efflux of K+ ions out of the cell, further contributing to the depolarization of the cell.
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Communication is the exchange of information. Investigations usually start
and end with communication. Which of the following steps in communication
is a scientist likely to take after completing an investigation?
A. Write a letter to the local newspaper announcing the results.
B. Do background research.
C. Discuss the results with scientists who have performed similar
investigations.
D. Form a hypothesis
HELP PLEASE A-PEX!!!
Why do you think a composer would want to alter or highlight a rhythm or a tone?
Answer: A composer may want to alter or highlight a rhythm or a tone to create a desired effect or mood. By emphasizing certain rhythms or tones, a composer can create a sense of urgency, tension, or excitement. Additionally, by altering the rhythm or tone, a composer can add texture or depth to a piece of music, making it more interesting and unique.
Which of the following is a true statement regarding photoreceptors? Check all that apply a. Rods are responsible for night vision. b. Rods are associated with photopic vision. c. Cones are associated with color vision. d. There are more cones than rods e. Cones function in brighter light.
the following is a true statement regarding photoreceptors is Rods are responsible for night vision.
What are the two types of photoreceptors?Two types of photoreceptors reside in the retina: cones and rods. The cones are responsible for daytime vision, while the rods respond under dark conditions. The cones come in three varieties: L, M, and S types.
What do rod photoreceptors detect?Photoreceptors in the retina are classified into two groups, named after their physical morphologies. Rod cells are highly sensitive to light and function in nightvision, whereas cone cells are capable of detecting a wide spectrum of light photons and are responsible for colour vision.
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The true statement about photoreceptors is-"Rods are responsible for night vision".
What are the four photoreceptors present in the eyes?There are four photoreceptor types in the human retina- Short-wavelength cones (blue), medium-wavelength cones (green), long-wavelength cones (red) and rods.
What is the main function of photoreceptors?Photoreceptors are specialized neurons found in the retina that convert light into electrical signals that stimulate physiological processes. Signals from the photoreceptors are sent through the optic nerve to the brain for processing.
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why does a frog have a dual mode of breathing? HOTS
What is the final set of instructions that the virus gives an infected cell so that more viral particles may be released into the body
These newly formed biological molecules are arranged into virus particles, which eventually mature into infectious virions. Finally, the virions are discharged from the cell, allowing the infection to continue.
The viral life cycle is divided into six stages: attachment, penetration, uncoating, gene expression and replication, assembly, and release.
In contrast, all viral particles have a protein coat that covers and protects a nucleic acid genome. The instructions for building the capsid's protein components are stored in the virus's nucleic acid genome.
The viral genome then takes control of the host cell's machinery, forcing it to replicate the viral genome and produce viral proteins in order to build new capsids..
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Recreate the sequence that occurs in the carbon cycle beginning with carbon dioxide gas.
Our atmosphere also contains it as carbon dioxide, or CO2. Calcium, magnesium, potassium, or sodium ions are released as the acid dissolves the rocks, a process known as chemical weathering.
What carbon cycle beginning with carbon dioxide gas?As carbon dioxide, or CO2, it is also present in our atmosphere. Rain starts the transfer of carbon from the atmosphere to the rocks, or lithosphere. Rain is a result of the weak acid, carbonic acid, which is created when atmospheric carbon and water interact.
Therefore, When animals perish, volcanoes erupt, fires burn, fossil fuels are consumed, among other processes, carbon is released back into the atmosphere.
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Kim learns how rocks can change from one type into another over a long period of time. She knows that a rock that undergoes extreme heat and pressure below the surface of Earth can be turned into a metamorphic rock. What processes could cause a metamorphic rock to return to the surface of Earth to be worn down again?
Choose the two that apply.
A. deposition
B. plate movement
C. chemical changes
D. wind or water erosion
Biodiversity Assignment
Answer:
what is the assignment on
have a good day :)
Explanation:
Answer:
What's the main question of the assignment.
In two or more complete sentences, describe an activity you perform that has an impact on climate change? Is it positive or negative? Can it be adjusted to improve our climate? Justify your answers in two or more complete sentences. Write your answer in the essay box below.
Answer:
Burning of woods has a negative impact on the climate.
Explanation:
Burning of woods for heating has a negative impact on our climate because it releases carbondioxide gas which is a greenhouse gas that trapped the reflected solar radiation and leads to global warming. We have to used alternative methods for heating such as electric heater instead of burning of wood which produce no pollution and can fulfill the requirement of heating so from the above discussion we can say that the activity has a negative impact on the environment.
What conclusion is on Mendelian genetics?
The conclusion of Mendelian genetics emphasizes particulate factors which are the determinants of inherited traits. These factors are referred to as genes. Each parent's cell contains a pair of genes for each trait under investigation. One allele for the dominant phenotype and one for the recessive phenotype are present in the F1 offspring of a cross of two pure lines.
In the 19th century, Mendel performed thousands of experiments with pea plants. He came to the further conclusion that genes are inherited as distinct, paired units from each parent. Mendel studied how parental genes diverged and whether they manifested in the offspring as dominant or recessive traits. The passing of mathematical patterns from one generation to the next was something he was aware of.
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How does carbon dioxide affect whales?
Whales accumulate carbon in their bodies during their long lifespans. When they die, they sink to the bottom of the ocean. Each large whale binds an average of 33 tons of carbon dioxide and removes this carbon from the atmosphere over centuries. Trees, on the other hand, only absorb up to 48 pounds of CO2 per year.
Rapid global warming has led to habitat loss for whales and dolphins, increasing competition for fewer and fewer prey species. It affects the timing and extent of migration, distribution and even fertility.
Scientists call large whales "ecosystem engineers." Research shows that whales cycle nutrients in the oceans, help produce the oxygen we breathe, and play an important role in mitigating greenhouse gases. Whales are not only amazing, they are breathtaking.
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What is a non-renewable resource?
A. A resource that has already been used up
B. A resource that is infinitely abundant
C. A resource generated at a rate that is much faster than it is used
D. A resource generated at a rate that is much slower than it is used
Answer:
a
Explanation:
Answer: D
Explanation: resources are called non-renewable not because they have been completely used up or will never replenish but because they take a long time ie about thousands or millions of years to replenish.
An ecosystem is represented below.
Key
A lege eeee eeee eeee eeee u sees
= Ocean surface
eeee
= Algae and
seaweed
co
जीनि
= Fish
= Mud and
sediments
The organisms represented as feet are found in the area shown due to which factor?
pH
B. sediment
C. light intensity
D. colder temperature
Answer:
C. Light intensity
Explanation:
they need light to grow so they stay near the ocean surface because that's where the most light is
Part A According to data presented in this chapter, which of the following statements is correct? Species are created independently of each other and do not change over time. The traits of populations become more perfect over time O Individuals -not populations -change when natural selection occurs. O When individuals change in response to challenges from the environment, their altered traits are not passed on to offspring. SubmitR Request Answer Provide Feedback
The correct statement is c)Populations - not individuals - change when natural selection occurs..So,correct option is c.
Natural Selection follows up on a life form's aggregate, or noticeable elements. Aggregate is many times to a great extent a result of genotype (the alleles, or quality forms, the living being conveys). At the point when an aggregate created by specific alleles helps organic entities make due and duplicate better compared to their friends, normal determination can build the recurrence of the supportive alleles starting with one age then onto the next - that is, it can cause microevolution.
Some important steps involved in evolution of natural selection
Natural Selection can cause microevolution (change in allele frequencies), with wellness expanding alleles turning out to be more normal in the populace.Wellness is a proportion of conceptive achievement (the number of posterity an organic entity leaves in the future, comparative with others in the gathering).Natural Selection can follow up not entirely settled by elective alleles of a solitary quality, or on polygenic (still up in the air by numerous qualities).Natural Selection not entirely settled by different qualities might appear as balancing out choice, directional determination, or troublesome choice.Hence,correct choice is c.
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(Complete question) is:
According to data presented in this chapter, which one of the following statements is correct?
a. When individuals change in response to challenges from the environment, their altered traits are passed on to offspring.
b. Species are created independently of each other and do not change over time.
c. Populations - not individuals - change when natural selection occurs.
d. The traits of populations become more perfect over time.
Categorize all the components involved in photosynthesis as either matter or energy!
In photosynthesis, matter components are chlorophyll, water, carbon dioxide and glucose. Energy components are light energy, chemical energy, thermal energy.
Matter:Chlorophyll: a pigment found in the chloroplasts that absorbs light energy
Water: a molecule that is oxidized during the light-dependent reactions
Carbon dioxide: a molecule that is used as a source of carbon for the synthesis of organic compounds
Glucose: a simple sugar produced as a result of the light-independent reactions.
Energy:Light energy: energy from the sun that is absorbed by the chlorophyll to drive the reactions of photosynthesis
Chemical energy: energy stored in the bonds of glucose and other organic compounds produced during photosynthesis
Thermal energy: energy in the form of heat that is released as a byproduct of the reactions of photosynthesis.
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