Maintaining safe water for drinking is an important goal for municipal water supply strategy. One of the last step
in drinking water treatment includes disinfection, a process that is used to
O A. remove chlorine from water
O B. kill waterborne pathogens
O C. add iodine to prevent goitre
O D. remove mercury water
What would be worse for this food web,the removal of the mouse or the squirrel and why
Answer:
It appears that neither would be worse since they both have an equal impact on the ecosystem, not sure if this is an option though, goodluck with your assignment
Answer:
Either, because the removal of either one would have the same impact because they eat the same food and are preyed upon by the same predators.
For hundreds of years the island of Jamaica has warm tropical weather.
A. weather
B. climate
C. climate change
If a bacterium is ____ to a drug, then that drug can be used to treat bacterial infection
Resistant
Neutral
Aseptic
Sensitive
Answer:
sensitive
Explanation:
what are the bases found in DNA
Which helps prevent errors in DNA replication?
A. DNA polymerase makes five DNA molecules from each single strand, and keeps the best five.
B. There are no complementary base pairs in DNA
C. DNA is produced in the ribosomes
D. DNA polymerase checks the DNA for errors
Which body parts of an organism are most likely to be made into fossils?
Every copy of a particular protein manufactured by a cell shows the same incorrect amino acid at the same point in its structure. According to the central dogma of molecular biology, in which structure does this error originate?
1. mRNA
2. DNA
3. tRNA
4. rRNA
Answer:
Dna
Explanation:
I had this on a test and this was the answer
According to the central dogma of molecular biology, DNA does this error originate.
What are the functions of DNA?Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix.
DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins.
DNA is made of nucleotides. A nucleotide has two components: a backbone, made from the sugar deoxyribose and phosphate groups, and nitrogenous bases.
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Transcribe the DNA strand bellow into mRNA
CCACGGTGGGGATA
Answer:
GGUGCCACCCCUAU
Explanation:
The symbol on a weather map for a cold front is what?
A. a line with triangles on it
B. a line with semi-circles on it
C. a line with squares on it
Explanation:
A line with triangles in it
1. Why is air called matter?
Answer:
=>. Matter is anything that occupy space
and has mass is called matter
=> so, air also occupy space and has mass
so, it is called
=> Everything surround us to which can touch are called matter
hope it helps
Help plz!!!
1. explain how water and carbon cycles through the environment
2. relate the cycling of matter to the success of an ecosystem
3.explain the importance of effective resource management
Answer:
Animals and plants need to get rid of carbon dioxide gasses through a process called respiration carbon moves from fossil fuels to the atmosphere when fuels are burned the ocean and other bodies of water absord some carbon from the atmosphere the carbon is dissolved into water.
HELPPP PLEASE!!! during the summer of 2015, the New Horizon space probe provided the first fly by images of the dwarf planet Pluto. Which of the following distances best reflects the distance the New Horizon traveled from Earth to Pluto?
A. 32.63 astronomical units
B. 7 million kilometers
C. 4.67 light years
D. 600,000 miles
Answer:
A. The New Horizon space probe traveled about 3 billion miles, which is 32 AU (Astronomical units)
The distance best reflects the distance the New Horizon traveled from Earth to Pluto is 32.63 astronomical units. The correct option is A.
What are planets?Planets are revolving bodies of gases and material. There are eight planets in our galaxy. These planets are present at a proper distance from each other, and they all revolve around the sun. The distance between bodies of the solar system is measured by astronomical units.
The distance between these planets and the sun is measured by astronomical units. It is denoted by Au. A kilometer is used to measure the distance in the earth between two objects. Light years are used to measure the speed of light. Miles is the US measurement system used to measure the distance as a kilo meter.
Thus, the correct option is A. 32.63 astronomical units.
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structure that helps move bacteria is called a
Explanation:
Flagella - Flagella (singular, flagellum) are hairlike structures that provide a means of locomotion for those bacteria that have them. They can be found at either or both ends of a bacterium or all over its surface.
I NEEEDDDDD HEEEELPPP PLEASE
Answer:
25%
Explanation:
There are 3 chances out of 4 the plant produced will have a yellow allele, since yellow is dominant the pea plant will be yellow instead of green. There is only 1 chance out of 4 that the plant will have both green alleles, which is only a 25% chance that the plant will be green.
Answer: 25% I think
Explanation:
Which diagram shows the Moon when it is least visible from Earth?
HELP!!!!
The first diagram shows that moon is least visible from the earth due to darkness.
The first diagram shows that moon is least visible from the earth because the moon is present behind the earth or earth is present in between sun and moon. The moon is not visible due to its presence in the dark. If it is present at the side of the earth then the moon is more clearly visible due to the light of the sun so we can conclude that the first diagram shows the moon is least visible from the planet earth.
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Need help will give brainliest
Answer: 1. The epidermis, the outermost layer of skin, provides a waterproof barrier and creates our skin tone.
2. The dermis, beneath the epidermis, contains tough connective tissue, hair follicles, and sweat glands.
3. The deeper subcutaneous tissue (hypodermis) is made of fat and connective tissue.
Explanation: Hope this was helpful! :)
HELP!!!!! 50PTS!!!!!!
Most Swiss starlings produce four to five eggs in each clutch. Starlings producing fewer or more than this have reduced fitness. Which of the following terms best describes this situation? (3 points)
The bottleneck effect will result in a small gene pool with little genetic diversity.
Directional selection will happen because the population individuals will be unable to adapt, leading to extinction.
Disruptive selection will result in the population of birds' risk decline, due to reduced number of eggs.
Genetic diversity allows for birds to produce an ideal number of eggs, which leads to stabilizing selection. I think is D
Answer:
D: genetic diversity allows for birds to produce an ideal number of eggs, which leads to stabilizing selection.
Explanation:
Genetic diversity allows for birds to produce an ideal number of eggs, which leads to stabilizing selection. The correct option is D.
What is genetic diversity?The spectrum of various inherited traits inside a species is referred to as genetic diversity.
There would be many individuals with a wide range of different traits in a species with high genetic diversity. For a group of related species to adapt to changing environments, genetic diversity is mandatory.
Genetic diversity aids the populations to adapt to altering environments. More variation boosts the likelihood that some individuals in a population will have allele variations that are suited to the environment. Those people are more likely to survive and have children with that allele.
Birds can produce an optimal number of eggs due to genetic diversity, which leads to stabilizing selection.
Thus, the correct option is D.
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The elliptical shape of the earths orbit changes all the time
True or false
Answer:
true
Explanation:
it is true bc you know what I mean it is true
26. What about the structure of a fat molecule makes it useful for a cell and why?
The large number of carbon-hydrogen bonds allow for the storage of energy.
Fats serve as enzymes in the process of digestion.
The glycerol portion of the fat molecule is used to release energy
The fatty acid part of fats help digest food in cellular respiration.
the large number of carbon-hydrogen bonds allow for the storage of energy
The structure of a fat molecule makes it useful for a cell, and a large number of carbon-hydrogen bonds allows for the storage of energy. The correct option is a.
What is the structure of fat?A glycerol backbone and three fatty acid tails make up the two types of components that make up a fat molecule. It contains a glycerol molecule and is a little chemical molecule. Where the hydroxyl group occurs in the groups, there are three fatty acid tails.
They have a long hydrocarbon chain since that is what they are. This particular long hydrocarbon chain has a carboxyl group or oxy group attached due to the abundance of carbon-hydrogen bonds.
Energy can be stored in it. On the structure, it is excellent for storing energy. Energy can be stored in a specific structure.
Therefore, the correct option is a. Numerous carbon-hydrogen bonds to allow for the storage of energy.
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Please help. This model shows a strand of DNA. Identify how information for specifying the traits of an organism is carried in the DNA.
A)
DNA codes for the sequence of nucleotides in RNA.
B)
The nitrogen bases in DNA code for the sequence of amino acids that make
up a protein
C)
The nitrogen bases in DNA code for the sequence of nucleic acids that
make up a protein.
D)
The sugar molecules found in the backbone of a DNA molecule code for
the RNA nucleotides.
Answer:B
Explanation: I just did it
Answer:
the answer is B)
Explanation:
DNA is made of nucleotide nitrogen bases, witch turn into Amino Acids, and then finally into protein
___________________________ are bodily structures that are similar in structure, but different in function, due to sharing a common ancestor
Answer:
Homologous structure
Explanation:
Have a great day
Differentiate between the layers of the Earth based upon physical properties AND explain the flow of heat within and between the layers of the Earth.
Answer:
The Earth can be divided into 5 main layers according to their physical properties: the lithosphere (most superficial layer of the Earth: rigid and cold), the asthenosphere (Second most superficial layer of the Earth: soft and ductile), the mesosphere or lower mantle ( Middle layer of the Earth: rigid and hot, able to flow gradually), the outer core (Second innermost layer of the Earth: liquid) and the inner core (innermost layer of the Earth: solid). The flow of heat inside the Earth will depend on the temperature and the characteristics of the material. The crust behaves like a solid and has relatively low temperatures. The mantle behaves like a fluid and since convection is much more efficient in this case, that is the main means of transport, even though the relatively high temperatures make it possible for energy to also be transported by means of radiation.
Explanation:
As you descend into the Earth's interior, the temperature, pressure, and density of the rocks gradually increase. The Earth can be divided into five main regions based on its physical properties (temperature and pressure) and according to its mechanical resistance: lithosphere the chemical composition of this layer is notably different, it also acts as a unit that shows a rigid behavior (not can be bent), mainly because it is cold and consequently resistant, asthenosphere located in the upper mantle (at a depth of about 660 km), there is a comparatively plastic soft layer, mesosphere (lower mantle) more rigid layer and it is because as the pressure increases, it counteracts the effects of the higher temperature and the resistance of the rocks increases gradually with depth. Despite their resistance, the rocks of the mesosphere are still very hot and are able to flow in a very gradual way, the outer core is a 2270 km thick liquid layer. The convective currents of iron in this area are those that generate the Earth's magnetic field and the inner core of the material is more resistant than the outer core (due to the enormous pressure to which it is subjected) and behaves like a solid. When penetrating the crust of the Earth a change in temperature is observed, in general it increases; this variation in temperature with depth is called a geothermal gradient. The heat flux on the Earth's surface is calculated as the product of the geothermal gradient and the thermal conductivity of the rocks, these two parameters being directly determined. The Earth is basically made up of three concentric layers: the innermost core has a composition of cast iron at a temperature of over 4,000 ºC; the mantle that is the intermediate layer formed by iron and magnesium silicates and its temperature varies from 4,000 ºC in its contact with the core to 800-1000 ºC of its outer surface that contacts the crust that is the most superficial layer and visible by man. This crust has a variable thickness of 5 to 35 km and is made up of aluminum and magnesium silicates, its temperature varying between 800-1000 ºC of contact with the mantle and 15-20 ºC of the surface that we know.
HELP!! WILL GIVE BRAINLIEST TO 1ST ANSWER!!! NO SPAM PLS!!!!!!!
If germinating seeds could only use fermentation to obtain energy, what changes would you expect in the rate of respiration and growth?
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Answer:
There is reduced cellular respiration or energy production if only fermentation is used and this will lead
to lower growth for the germinating seed.
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I need the the answered for the lab report ASAP!!!!!!!! 90 brainly points it’s the disease spread lab it’s to late for me to do it HELPPPPPPPPP
Answer:
Lab data order... I don't know what ur really asking.
25 POINTS PLEASE HELP. Check the correct column(s) for each description *
Prokaryotes
Eukaryotes
Contains cytoplasm
Do NOT have membrane-
bound organelles
Cells do NOT have a nucleus
Can be unicellular or
multicellular
Have ribosomes
Have cell membranes
Have genetic material
(DNA/RNA)
Plants and animals
Answer:
1. Both
2. Prokaryotes
3. Prokaryotes
4. Eukaryotes
5. Both
6. Both
7. Both
8. Eukaryotes
Write two statements expressing the relationships between voltage and current and resistance and current.
Explanation:
The current flowing in a circuit is directly proportional to the applied voltage and inversely proportional to the resistance of the circuit, provided the temperature remains constant.If we increase the amount of voltage applied, and do not change the resistance, we will also increase the current.please answer the question in the picture if you know the answer and thxxx :) :) :)
Alexander Fleming discovered a type of
that kills bacteria, which led to the development of Penicillin.
Answer:
mold
Explanation:
Alexander Fleming was a Scottish physician and scientist. He was known for the development of penicillin.
Alexander Fleming discovered a type of mold that kills bacteria, which led to the development of Penicillin.
The mold created around itself a bacteria-free circle.
Fleming experimented further and named the active substance penicillin.
Answer:
Alexander Fleming discovered a type of mold that kills bacteria, which led to the development of Penicillin.
Explanation:
How many types of muscels are there? Write their functions in breif.
Answer:
There are three types of muscle, skeletal or striated, cardiac, and smooth. Muscle action can be classified as being either voluntary or involuntary. Cardiac and smooth muscles contract without conscious thought and are termed involuntary, whereas the skeletal muscles contract upon command.
Explanation:
I HOPE IT'S HELP