A scientist is extracting the DNA of a multicellular organism. He finds that 20% of the strands bases are Thymine. Based on Chargaff's rule, what percentage of the
strands bases would be Adenine?
A. 20%
B. 70%
C. 40%
D. 60%
Answer:
A. 20%
Explanation:
A DNA molecule consists of four nucleotides viz: Adenine (A), Thymine (T), Guanine (G), and Cytosine (C). According to Chargaff in his complementary base pairing rule, these nucleotides pair with one another in such a way that A bonds to T, while G bonds to C.
Based on Chargaff's rule, the amount of Adenine in the DNA is equal to the amount of Thymine while the amount of Guanine is equal to that of Cytosine i.e. A=T, G=C.
A + T + G + C = 100%
Hence, in this question, a scientist finds that 20% of the strands bases are Thymine. This means that the amount of Thymine in that DNA will also be 20%. S
Since A=T = 20% in accordance to Chargaff rule.
What is the highest possible elevation shown on the map?
Answer:
Point B
Explanation:
7. How does the revolution of the Earth around the sun cause the seasons to change?
do you like this image i found on instagram???
Answer:
oh absolutely. he is the best boy. also yummy. i would not eat him tho.
Answer:
drop ur id ill add u though
Explanation:
Which of the following types of fats are most associated with heat disease? (They tend to be solid at room temperature)
A. Monounsaturated
B. Polyunsaturated
C. Phospholipids
D. Saturated fats
Answer:
Saturated Fats
Explanation:
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polyunsaturated
Explanation:
all dietary food contains(polyunsaturated)are solid
What might be some reasons why cellular communication is necessary?
Answer:
in single-celled organism,signaling allows population of cells to coordinate with one another and work like a team to accomplish tasks no single cell could carry out on its own. the study of cell signaling touches multiple biological disciplines 5 years developmental biology , neurontology, and endocrinology.
* explanation* : hope this helped you
What macromolecules provide instruction for growth
B. What is the largest cell called?
This is the largest cell in the human body. In
contrast, the sperm cell is the smallest cell in
the human body.
HELP ASAP!!!
From the giraffe story, give an example of the following:
1. Variation
2. Adaptation
3. A factor affecting the size of a population
Answer:
1. Each Giraffe's neck length is different
2. The tall neck Giraffes reproduced and their off spring inherited their genes
3. A drought occurred.
Explanation:
Calculate the volume in mL of a stock solution of 100% ethanol, required to prepare 2 L of a 70% solution of ethanol in dH2O
Answer:
For example, to make 70% ethanol from 95% ethanol, take 70 mL of 95% ethanol and add enough water to bring the volume to 95 mL. You will then have 95 mL of 70% ethanol. This works for any dilution and all that is required is a large enough graduated cylinder.
When using liquid reagents, the percent concentration is based upon volume per volume, i.e. #ml/100ml. Example 2: If one wished to make a 70% ethanol solution, 70 ml of 100% ethanol would be dissolved in 30 ml of water (or the equivalent for whatever volume was needed).
A cell’s nucleus will divide during mitosis. Whaat process must happened before it can divide?
What is the function of lipids?
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What is the difference in climates east and west of the Cascade Mountains in the Pacific Northwest?
There is more cloud cover and more rain in the east of the Cascade Mountains,
O There are colder winters in the west but milder winters in the east of the Cascade Mountains,
O There is more sunshine and less rain in the west of the Cascade Mountains
There are milder winters in the west but colder winters in the east of the Cascade Mountains,
Answer:
There are milder winters in the west and colder winters in the east
Answer:
There are milder winters in the west but colder winters in the east of the Cascade Mountains. or d/4th one
Explanation:
made it easier to read other one
1. How much force accelerate a bicycle and rider with mass 60 kg at 1.5 m/s?
Answer:
Force, F = 90 N
Explanation:
Given that,
Mass of the bicycle and rider, m = 60 kg
Acceleration of the bicycle and rider, a = 1.5 m/s²
We need to find the force acting on the bicycle and rider to accelerate. Let it is F. Its force is given by :
F = ma
F = 60 kg × 1.5 m/s²
F = 90 N
So, the force acting on the bicycle and rider is 90 N.
I NEED HELP RN!! PLEASE
An oven is a technological system. Which of the following describes an input into this system?
A. setting the temperature
B. Burning gas releases heat.
C. A thermostat monitors the temperature and increases the gas flow when the temperature falls too low.
D. A cake is baked.
Answer:
c got it right on my quiz
Explanation:
Fill in the blank
The length of __________ of dark period controls _________.
The structure labeled "A" open and close the sites where the gases, carbon dioxide and oxygen, are exchanged during photosynthesis. What is the structure labeled A?
The structure A in the question seems missing but the given answer is based on the description given in the question.
Answer:
The gaseous exchange of carbon dioxide(CO2) and oxygen(O2) occurs through small, regulated openings called stomata during photosynthesis.
Therefore the Structure A is Stomata
Cells use a molecule called
Choose...
to store and release energy like a battery. The energy is stored in chemical bonds between
Choose...
groups of the molecule, and the energy is released when the chemical bonds are broken.
Answer:
ATP & Phosphate
Explanation:
just took the quiz and got it right
Which of these best describes weathering and erosion?
A
They are tools people use to change landforms and create new ones.
B
They only affect one landform: islands.
C
They cause tiny changes to Earth’s surface that become enormous over time.
D
They significantly change the surface of the Earth every few days.
The best description of weathering and erosion should be considered as the option d. They significantly change the surface of the Earth every few days.
What is weathering and erosion?Weathering represent the break down or the rocks should be dissolved out and the minerals should be on the earth surface.
When the rock should be split down so this process we known as the erosion transports.
Therefore, the option d is correct.
Learn more about earth here: https://brainly.com/question/12004410
What's the term that describes all the chemical reactions taking place in an orgasm
Answer:
Metabolism
Explanation:
What dose the numbers on the map mean
Answer:
how far you need to go and the coordinate 55 south or something
Explanation: 55 south or something
Someone please tell me the closest planet and the farthest in order 1-8
Answer:
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Explanation:
Answer:Closest to farthest: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Explanation:
Use the diagram below to answer the following question.
Which of the following statements accurately describes the relative age of the fossils in these rock layers?
A) The yellow shell fossils are from 300 million years ago
B)The brown trilobite fossils are from 500 million years ago
C)The brown trilobite fossils are older than the yellow shell fossils
D)The yellow shell fossils are older than the brown trilobite fossils
Answer:
C) The brown trilobite fossils are older than the yellow shell fossils
Explanation:
How does water cause frost wedging?
A
Water attracts lightning, which breaks apart huge boulders into many smaller pieces.
B
Water carries sediment to large rocks, causing them to rub against each other.
C
Water freezes and thaws inside rock cracks, causing them to widen and then split.
D
Water slowly wears down a rock’s sharp edges, leaving behind a smooth surface.
Answer:
C. Water freezes and thaws inside rock cracks, causing them to widen and then split.
Explanation:
When water gets in the crack at the bottom and freezes, frost wedging occurs.
Frost wedging happens when water gets in crack, freezes, and expands. This process breaks rocks apart. When this process is repeated, cracks in rocks get bigger and bigger (see diagram below) and may fracture, or break, the rock.
Which is the process by which green plants use sunlight, water, and carbon dioxide to make food?
o photosynthesis
o cellular respiration
o anaerobic respiration
o fermentation
collection of monkey
Answer:
A group of monkeys may be commonly referred to as a tribe or a troop.
i think that correct?
Explanation:
does any one know whats wrong with my foot it has been in constant pain since yesterday now i dont know if it is a sprain or what plz help im in constant pain now i can hardly walk it is the long near the big toe right in the center of the long bone conecting to my ankle plz i need to know if i need to go to doctor.
Answer:
Yes. You need to go to the doctor.
Explanation:
Your foot could be doing this because the bone itself could be bruised or else it somehow got injured or is in some other type of pain.
Function of trichocyst
Answer:
Just read this and summarize it
Explanation:
There you go!
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At what point should health officials have started to control the spread of Ebola in West Africa? It needs to be an essay.
A student finds a beaker containing a substance in the laboratory. The student filters the contents of the beaker and notices that a solid is left on the filter paper.
What can the student conclude about the type of matter of the original material?
Answer:
These are my answer choices so I guess it's an mixture, it's a mixture of filtration .. so its a mixture
Explanation:
(1) The original material was a mixture.
(2)The original material was a compound.
(3)The original material was either an element or a compound.
(4)The original material was either a mixture or a compound.
A beaker containing a substance is in the laboratory. Upon filtering, a solid is left on the filter paper. We can conclude that the original material was a mixture.
Filtering is a method for the separation of heterogeneous mixtures. A filter paper is placed in a funnel and the mixture is poured over it. The liquid passes the filter while the solid is retained. Since this was the situation of the student, we can conclude that the original material was a mixture. After the filtering, the student will have 2 homogeneous systems.
A beaker containing a substance is in the laboratory. Upon filtering, a solid is left on the filter paper. We can conclude that the original material was a mixture.
You can learn more about filtering here: https://brainly.com/question/12423738