Multiple choices :
A. test for chemicals that might poison fish and cause algae to grow
B measure the dissolved oxygen content in pond-water samples
C look for sources of pollution that may be affecting the pond
D measure the amount of light at various levels in the pond
Answer;
D. measure the amount of light at various levels in the pond
Fish in the pond feeds on the algae that grows in the pod.
Therefore; death of fish in the pond caused a large increase in algae populations.
Measuring the amount of light in the pond would not tell the student what caused the death of the fish in the pond.
What is the name of the condition in which tissue from the lining of the uterus grows outside the uterus answers?
Soldiers were given ______ not only to ease the pain of their injuries but also to relieve the symptoms of dysentery. heroin steroids methamphetamine morphine
Physical and chemical barriers prevent pathogens from getting into our body. the most comprehensive barrier is the waterproof layer of _______ that covers the body's surface.
TRUE OR FALSE the oxygen present in the modern atmosphere is very reactive and would tend to destroy any new kinds of organic molecules that might form from simpler compounds
A plant lacking a mineral or failing to make a needed vitamin dies before it can bear food for human consumption.
a. True
b. False
If one strand of a dna molecule has the sequence 5'tccgaat3', what is the sequence of the other, complementary strand?
During the elongation phase of translayion which site in the ribosome represemts thw location where a codon is being read
Sodium hypochlorite, naocl, is household bleach. it removes stains from clothing through a redox reaction in which the stain molecules are oxidized. sodium hypochlorite acts as a(n)
Final answer:
Sodium hypochlorite is a commonly used household bleach and disinfectant, acting as an oxidizing agent in removing stains. It is produced via the electrolysis of diluted sodium chloride solutions. Sodium hypochlorite solutions tend to decompose, releasing chlorine which contributes to their effectiveness.
Explanation:
Sodium hypochlorite, commonly known as household bleach or simply bleach, is widely used as a disinfectant and a bleaching agent. This chemical compound, with the formula NaOCl, is known for its ability to remove stains from clothing through a redox reaction where the sodium hypochlorite acts as an oxidizing agent. In this reaction, the stain molecules are oxidized, effectively breaking down the color-causing molecules and lifting the stains.
The production of sodium hypochlorite involves the electrolysis of cold, dilute sodium chloride solutions which lead to the formation of chlorine and hydroxide ions. These ions subsequently react to produce NaOCl. Sodium hypochlorite solutions can be unstable and decompose, releasing chlorine as the active ingredient, which explains its effectiveness in both cleaning and disinfection processes.
While historically liquid chlorine was used in the production of sodium hypochlorite by companies such as Clorox, there has been a shift towards shipping concentrated solutions and diluting them as needed. This change reflects advancements in production and distribution methods, making the use of sodium hypochlorite more efficient and sustainable. Furthermore, this chemical is not only limited to household use but also plays an important role in water treatment facilities.
Why must organisms eat? they eat to obtain potential energy stored in the chemical bonds. they eat to provide reactants for respiration to make atp. they eat to obtain the monomers of proteins, lipids, and carbohydrates constructed in organisms. they eat to obtain carbohydrates, proteins, and lipids. all answers are correct?
All the answers are correct.
The food we eat supplies the body with energy-rich molecules such as glucose. These molecules are then broken down into a series of steps and used in cellular respiration to form CO2 and H2O, releasing energy to be used by the body (ATP). Glucose is an example of carbohydrate monomer formed by hydrolysis of polymer (polysaccharides) which is ingested by food.
The proteins that bind to the dna near regions where gene transcription begins are called the proteins that bind to the dna near regions where gene transcription begins are called homeobox genes. mrna. the gray crescent. transcription factors. promoter genes.
The answer is transcription factors. These proteins bind to the promoter region and either enable the polymerase protein to bind to the promoter and start transcription (enhancers) or inhibit the binding of the polymerase to the promoter hence repress transcription (silencers).
The days are getting shorter and the temperature is dropping. The squirrel responds to these cues by A) migrating. B) hibernating. C) shedding fur. D) gathering food.
Caching or hoarding food, is a behavior characteristic for squirrels during winter. They usually do this by putting their food in a shallow hole which will serve as food when resources are scarce in winter. Also, squirrels maximize their food consumption and body mass making the reserves that will help the animals survive.
Answer:
Gathering food.
Explanation:I know cause I did it.
Which of the following plants is an angiosperm? fern moss pine rose
What organs are the biggest producers of lymph?
In what part of the female reproductive tract does fertilization typically occur?
A density independent limiting factor is a limiting factor of a population that can affect population growth no matter what the population density. what is a density independent limiting factor that can affect the human population growth of north carolina?
Answer:hurricanes and flooding
Explanation: Due to the location of North Carolina being along a coastal line they are susceptible to hurricanes and as a resultant inland flooding
Answer:
Hurricanes
Explanation:
I just took a benchmark and i got that question correct
Once meiosis occurs gametes are formed with a reduced number of chromosomes. The gametes are
A. haploid.
B. uniploid.
C. homologous.
D. diploid.
Once oil is formed it must accumulate in concentrations that can be drilled and pumped, these concentrations are called
What is physical activity? question 24 options:
a.any bodily movement that is produced by the contraction of skeletal muscles and that substantially increases energy expenditure.
b.the ability to perform regular moderate to vigorous levels of physical activity without excessive fatigue
c.planned, structured, and repetitive bodily movement done to improve or maintain one or more components of physical fitness, such as endurance, flexibility, or strength
d.sitting on the couch and playing video ga?
Dna encodes the information necessary to produce the proteins needed by your body. to makes these proteins, dna first undergoes a process known as transcription. this is when information on a dna is transferred to a mol;ecule very similar to dna, known as
Why is the process of nuclear fusion important to life on earth?
Answer:
Earth gets energy from sun which in turn produces energy through nuclear fusion.
Explanation:
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Determination of the incubation period for a disease outbreak helps to: demonstrate the location of the outbreak show the distribution of cases by time of onset verify that an epidemic has occurred identify possible infectious agents
The right option is show the distribution of cases by time of onset
Determination of the incubation period for a disease outbreak helps to show the distribution of cases by time of onset. Incubation period is the time from the moment of exposure to a pathogenic organism to the time that signs and symptoms of the disease appear. For example the incubation period of Salmonella that causes typhoid fever is between 6 to 72 hours.
Making a group appear different from what is normally accepted is called _____.
Why do plant cell possess large size vacuole?
A 22-year-old man had a strong acid chemical splashed into both of his eyes. he is conscious and alert, is experiencing intense pain, and states that he is wearing contact lenses. treatment should include:
The treatment should include removing the
contact lenses and begin irrigating the eyes by introducing the flushing fluid
at the inner corner of the eye close to the nose and allowing it to run across
the eye to the outer edge. The flushing fluid washes the eye and helps to
relieve irritation, discomfort, burning and itching by removing the strong acid
chemical.
True or false? testing a baby's blood for hiv antibodies provides evidence of the mother's hiv status.
Bacterial cells protect their own dna from restriction enzymes (endonucleases) by _____.
Bacterial cells protect their own DNA from restriction enzymes (endonucleases) by methylation.
What is methylation?Methylation is a process by which a methyl group is added to a DNA molecule, which can affect its structure, function, and activity.
In DNA methylation, a methyl group is added to a cytosine base in the DNA sequence. It is a key epigenetic modification that plays an important role in regulating gene expression, chromatin structure, and cellular differentiation during development. It tends to be associated with gene silencing, as it can prevent transcription factors from binding to DNA and activating gene expression.
Methylation is carried out by a group of enzymes called methyltransferases, which transfer a methyl group from a donor molecule to the target molecule. Methylation is a reversible process. The removal of methyl groups is catalyzed by demethylases. Thus, Bacterial cells protect their own DNA from restriction enzymes (endonucleases) by methylation.
Learn more about methylation, here:
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A template dna strand contains the sequence 3'-atgctgac-5'. the corresponding sequence in the rna transcript is:
The corresponding sequence in the RNA transcript for the template DNA strand 3'-ATGCTGAC-5' is 5'-UACGACUG-3'.
When transcribing DNA to RNA, several key points must be remembered. First, the DNA and RNA strands are antiparallel, meaning they run in opposite directions. Second, RNA synthesis occurs in the 5' to 3' direction, opposing the 3' to 5' template DNA strand. Third, RNA uses ribonucleotides instead of deoxyribonucleotides, which includes replacing thymine (T) with uracil (U) when base pairing with adenine (A). Lastly, the complementary base pairing rules apply where A pairs with U (in RNA) and cytosine (C) pairs with guanine (G). Using these principles, the transcript sequence is derived as 5'-UACGACUG-3' which aligns opposite the given DNA template strand.
What do you use to make an inference in biology?
Both animals and fungi are heterotrophic. what distinguishes animal heterotrophy from fungal heterotrophy is that most animals derive their nutrition by ________. both animals and fungi are heterotrophic. what distinguishes animal heterotrophy from fungal heterotrophy is that most animals derive their nutrition by ________. ingesting materials using enzymes to digest their food consuming living, rather than dead, prey preying on animals
What are the names of the three stages of development that a fertilized egg goes through before birth?