Molecules of DNA are composed of long chains of?
two long polynucleotide chains
A DNA molecule consists of two long polynucleotide chains composed of four types of nucleotide subunits. Each of these chains is known as a DNA chain, or a DNA strand. Hydrogen bonds between the base portions of the nucleotides hold the two chains together
Molecules of DNA are composed of long chains of nucleotides.
What are nucleotides?Nucleotides are the building blocks of DNA and RNA adenine (A), thymine (T), guanosine (G), and Cytosine (C. In RNA, uracil (U) is present instead of thymine.
The pentose sugar is the ribose sugar in RNA and deoxyribose sugar in DNA. In deoxyribose sugar, oxygen is absent from the 3' carbon.
Phosphate groups are attached through the 5-C of pentose sugar by an ester bond. One polynucleotide chain is formed when the phosphate of one nucleotide forms a phosphodiester bond with the sugar of another nucleotide.
A double-stranded structure is formed by base pairing between nucleotides. The adenine binds to thymine by two hydrogen bonds and guanine binds to cytosine by three hydrogen bonds.
Therefore the molecules of DNA are composed of long chains of nucleotides.
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If a dog had the genotype Aa, what color (phenotype) would his fur be?
A. Brown
B. White
Answer:
A
Explanation:
For each of the genotypes below determine what the phenotype would be. ... AA DOM Ff ... In dogs, the gene for fur color has two alleles. ... phenotypes and genotypes of their possible puppies by using a Square.
Please help me with this question :} or I'll fail my class :{
For the genotype you just have to write the pair of letters
for the phenotype it's unclear what most genes represent but if one dominant allele is present the dominant trait will maniefest, considering all the cases are complete dominance
1.
q arm of chromosome
a.genotype Ff
phenotype the dominant trait(F)
b.genotype tt
phenotype: the recessive trait(since it's the only one present)
c.genotype Bb
phenotype: the dominant trait
d. genotype hh
p arm of chromosome
phenotype the recessive trait
e.genotype Rh+Rh+
phenotype positive rhesus factor
f.genotype mm
phenotype recessive trait
g. genotype CC
phenotype dominant trait
2.
q arm of chromosome
a.genotype Ff
phenotype dominant trait
b.genotype TT
phenotype dominant trait
c. genotype bb
phenotype recessive trait
d.genotype hh
phenotype recessive trait
p arm of chromosome
e.genotype Rh+Rh-
phenotype positive rhesus factor
f.genotype mm
phenotype recessive trait
g.genotype Cc
phenotype dominant trait
please help!! 15 points
Answer:
The answer is the age of the rock.
Explanation:
Scientists can use their tools and DNA to figure out the age of rocks.
Explain how PHOTOSYNTHESIS works in plants
Answer:
During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. ... This transforms the water into oxygen and the carbon dioxide into glucose. The plant then releases the oxygen back into the air, and stores energy within the glucose molecules.
Explanation:
What are the like terms in the expression: 2a + 3b+ 40 - 5a + 8 - 4
O 2,3,4,-5
O 2a, 3b, 4c
O-5a, 8
O2a, -5a, 8, -4
i need help plzz
Answer: 2,3,4,-5
Explanation:
it seems that 40 is supposed to be 4c.
the terms can be grouped in several ways
2a, -5a Contain factor ‘a’
8, -4. Simple integers/constants
2a, 4c, 8, -4. Even numbers
2a, 3b, 4c, -5a Contain a factor
Can’t group on + or - because values of a,b,c are unknown
From the available choices, only 2,3,4,-5 matches a logical group.
6.
Examples of molecules that can cross cell membranes by simple diffusion include
1. water.
m. oxygen.
n. carbon dioxide
0. all of the above
which layer of the earth is about 85% of iron
Answer:
the mantle
Explanation:
2885 kilometers thick and is the middle layer of the Earth
the earth's mantle
the mantle is made up of several minerals such as iron, magnesium, silica and oxygen.
Practice 5: Match the statement ends to the beginnings
A Shell
D. Cell wall
B. Provides protection and support for the cell
E. Controls what goes into and out of the cell
C. Cell membrane
1. All cells have a
2. Plant cells have a
3. The cell membrane
4. The cell wall
5. The cell wall's function is similar to, or like a
Answer:
A-4. the cell wall
D-5. the cell walls function is similar to, or like a
B-2. plant cell have a
E-3. the cell membrane
C-1. all cell have a
Jimmy and Marquis are conducting an experiment in class. They have
planted four seeds in four different pots. They placed the pots in different
places around the classroom: in a sunny window, on the work table, on the
floor near the window, and under the boys' desk. The boys watered the
pots every morning when they arrived at school. Once the seeds sprouted
the boys measured how much each seed grew. "Wowl" said Marquis, after
3 weeks of observing and measuring, "I can tell which seed was under our
desk!" Can you? Which seed was placed under the boys desk?
Measuring Plant Height
10
Plant Height (Inches)
Seed 1 Seed 2 Seed 3 Seed 4
a
A stone 'X' of mass 2 kg is at the height of 2 m from the ground level
Another similar stone 'Y' of mass 4 kg is at the height of 4 m from the ground
level. What is the difference between their potential energy?
un minutes Calculate
Answer:
120 joule.
Explanation:
Given
For the stone X
Mass (m) = 2 kg
Height (h) = 2 m
Acceleration due to gravity (g) = 10 m/s²
Then we have the formula to calculate the potential energy
P.E 1 = mgh
= 2 * 10*2
= 40 joule
Now for Stone Y
mass (m) = 4 kg
height (h) = 4 m
acceleration due to gravity (g) = 10 m/s²
Now
P. E2 = mgh
= 4 * 10* 4
= 160 joule
Now the difference between their potential energy is
= P. E2 - P. E 1
= 160-40
= 120 joule
Hope it will help you :)
Which of the following is a
mechanical wave?
A. Sound
B. Light
C. Radio
D. Gamma Rays
1. How does the human body respond to exercise?
Answer:
the heart pumps more blood and sends it to the muscles. to create more blood more oxygen is used and you start to breathe harder. if you work out hard then you might get some lactic acid build-up.
hope this helped!
Which chemical bond most likely stores the most energy?
A. C=C
B. C-C
C. H-H
D. H-O
Answer:
The chemical bond which stores more energy is the Double carbon-carbon bond.
Explanation:
What else is produced during the combustion of propane, C3H8?
H2O
C3H8
O2
C3H8O2
What else is produced during the combustion of propane, C3H8 is H20, but to understand this reaction, we need to know.....
Combustion of propaneWhen an oxidizer sold as a fuel, it is also called liquefied petroleum gas (LPG), which is a mixture of propane with small amounts of
PropyleneButane and butylene plus ethanethiolAs an odorant to prevent the normally odorless propane from going unidentified. when in leaks. It is used as fuel for stoves and in car engines.
The combustion of propane is a typically exothermic reaction with the evolution of heat:
C3H8 + 5 O2 → 3 CO2 + 4 H2O
With this information, we can say that the combustion product of propane is H2O.
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6. A characteristic common to both diffusion and active transport is that
the movement of molecules occurs
energy is needed
oxygen is moved across a membrane
O
molecules move from low concentration to high concentration
Answer:
oxygen is moved across a membrane O, cause the others are untrue.
Please help would mean a lot tried looking up the answer but I have to pay to get answers.
A vacuum cleaner helps collect waste that is left behind on the floor. Some vacuum cleaners even suction up liquids. The vacuum cleaner could represent which organelle in the cell?
Answer:
lysosome
Explanation:
It deals with food, and like a vacuum, stores things
A vacuum cleaner helps collect waste that is left behind on the floor. Some vacuum cleaners even suction up liquids. The vacuum cleaner could represent lysosomes.
What is lysosomes?Lysosomes are defined as membrane-enclosed organelles containing a variety of enzymes capable of degrading all sorts of biological polymers, including proteins, nucleic acids, carbohydrates, and lipids.
It can also be defined as sphere-shaped vesicles or sacs containing hydrolytic enzymes capable of breaking down nearly all types of biomolecules.
Lysosomes are hydrolytic enzyme-containing cell organelles. Hydrolytic enzymes can degrade undesirable cell components such as proteins, lipids, and carbohydrates, resulting in cell waste.
Vacuum cleaner is defined as a suction device used to remove dirt off floors, upholstery, drapes, and other surfaces It is usually powered by electricity.
Thus, a vacuum cleaner helps collect waste that is left behind on the floor. Some vacuum cleaners even suction up liquids. The vacuum cleaner could represent lysosomes.
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What is "A C G G A T C G" as an mRNA strand?
How many Calories of complex carbohydrates were converted to sugars?
What are the three main components of a DNA molecule?
A. a sugar, a nucleotide, and an amino acid
B. a sugar, a water molecule, and a nitrogenous base
C. a sugar, a phosphate group, and a nitrogenous base D.
a sugar, a phosphate group, and an amino acid
Answer:
a sugar, a water molecule, and a nitrogenous base
Explanation:
Answer:
a sugar, a phosphate group, and a nitrogenous base
Explanation:
i had it for study island that was the correct answer
What are the three main classifications that describe galaxies? By what one visible
characteristic do scientists categorize galaxies?
Answer:
Spiral Galaxies, Elliptical Galaxies & Irregular Galaxies
Explanation:
How did galaxies originate? Astronomers believe that after the big bang, the explosion which began the universe 10 billion to 20 billion years ago, gravity began to compress masses of free-floating gas. Two main theories, bottom-up and top-down, explain what happened next. According to bottom-up theories, clusters began to form and assembled together into the larger units we know as galaxies. Top-down theories suggest that galaxies formed first, and the stars and other objects within them were subsequently produced. They categorized different galaxies to maintain their tests from the other galaxies.
HELPPPPPP MEEEEEEEEE PLZZZZZZZZZZ
Answer:
01). cells
02).seeing inside the cells
03).Robert hook
Water that falls onto land surfaces is either soaked into the ground or flows downhill into a body of water. The water that soaks into the ground is called groundwater.
Soil and rock that allow this water to pass through them are called ________.
A. aquifers
B. compacted
C. permeable
D. runoff
The capacity of a rock or other substance to let the passage of water is known as permeability, hence option c is correct.
What is groundwater?Groundwater may readily flow through permeable materials because the pore space is linked throughout the rock or sediment. Mud and clay are examples of materials with great porosity yet very limited permeability.
An aquifer is a water-bearing rock that easily transfers water to wells and springs, the aquifers may be dug into and water pumped out.
Therefore, water that falls onto land surfaces flows into water bodies or it may be soaked in the ground, this water flows through the soil and rock which are permeable, hence option c is correct.
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How are chromosomes arranged in a karyotype?
Answer: A karyotype test examines these dividing cells. The pairs of chromosomes are arranged by their size and appearance.
Explanation:
In a karyotype, the arrangement of chromosomes is generally done in the order of size, that is, from largest to smallest.
What is a karyotype?It is the number and appearance of chromosomes. It comprises the length of the chromosomes, the banding pattern, and the position of centromere.
In a human karyotype, the body chromosomes or autosomes are usually aligned in approximate order of size from largest to smallest, that is, from chromosome 1 to chromosome 22.
However, the chromosome 21 is shorter in comparison to chromosome 22. The arms of the chromosomes protruding from either end of the centromere may be classified as long or short, based upon their relative lengths.
The long arm is abbreviated as q and the short arm as p. Each arm is subdivided further and is designated by a number. The locations on chromosomes can be illustrated by using the naming system.
Thus, in a karyotype, chromosomes are arranged on the basis of their size, that is, from largest to smallest.
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2) Jean is a 12 year old girl who consumed chicken that was not fully cooked at a restaurant.
Thirty-six hours later, she started vomiting and was constantly having diarrhea. After a week,
she had a fever and swelling around her eyes and under her neck.
help me pls
Salmonella infection and campylobacteriosis cause diarrhea after eating partially cooked chicken. This causes food poisoning.
What is food poisoning?An illness called food poisoning is brought on by consuming tainted food. Most people recover without treatment in a few days and it's typically not dangerous. The food is typically contaminated with bacteria, such as salmonella or Escherichia coli (E. coli), or a virus, like a norovirus, in cases of food poisoning.
more than three days of diarrhea. A high fever (102°F or above) vomiting so frequently that it is difficult to swallow liquids. Dehydration symptoms include not peeing as frequently, a dry mouth and throat, and feeling lightheaded while standing up.
Hence, Jean suffered from food poisoning caused by salmonella infection.
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HELPPPPPPPP MEEEEEEEEE PLZZZZZZZZ
Answer:
hi
Explanation:
Answer:
What do you need help with?
Clouds are categorized by their shape and their elevation. Which list shows cloud type in order from lowest to highest in the sky?
Clouds are categorized by their shape and their elevation. Which list shows cloud type in order from lowest to highest in the sky?
The answer is C ( stratus, altocumulus, cirrus )
Answer: it’s C
Explanation:
Please help I'm behind
Answer:
The first answer is rainfall, and the second answer is the last one
Explanation:
1.
Rainfall is measured with a rain gauge in inches/millimeters - Most modern rain gauges generally measure the precipitation in millimetres in height collected on each square meter during a certain period, equivalent to litres per square metre. Previously rain was recorded as inches or points, where one point is equal to 0.254 mm or 0.01 of an inch.
2.
Climate is the weather conditions prevailing in an area in general or over a long period. The other 3 describe the weather conditions in a place for just a week, or day while climate is measured annually (basically over a long time)
Good luck with the rest of your exam, I hope you catch up with all your work and do well :)
Earth Science
Please Help!
Short term atmospheric conditions give information regarding the weather in an area.
True
False
Long-term precipitation and temperature data can give an indication of the climate of an area.
True
False
Answer:
true.
true.
both are true
Short term atmospheric conditions give information regarding the weather in an area and Long-term precipitation and temperature data can give an indication of the climate of an area, both statement true.
What are weather and climate conditions?Weather is the collective name for the momentary properties of the lower atmosphere, including precipitation, temperature, humidity, wind speed, direction, and atmospheric pressure. The possibilities are endless: it may be bright, cloudy, rainy, foggy, chilly, hot, windy, stormy, snowy, etc.
Seasons, documented climate cycles, or volcanism are frequently to blame for short-term climate change, which affects shorter timescales.
Long-term climate change affects longer time periods and may be brought on by human activity, variations in the sun's output, or a sluggish recovery from the Flood.
Therefore, weather refers to atmospheric circumstances for a brief period of time, whereas climate refers to long-term, predictable atmospheric conditions.
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