Answer:
A. 15%
Explanation:
DNA is composed of four nitrogen bases: Adenine (A), Thymine (T), Guanine (G), and Cytosine (C). Chargaff's rule of base pairing states that A always pairs with T, while G always pairs with C. The total distributed percentage of the four 4 nitrogen bases must be equal to 100%. In this case, the C content is 35%, thereby G=35% (i.e., equal to C content), while the remaining 30% must be equally divided between T=15% and A=15%.
Cell walls are made of cellulose, a complex carbohydrate. Which of the following compounds is the basic unit of the cell wall?
a
a
Ob
sugars
amino acids
nucleic acids
lipids
(
c с
d
Answer:
sugars
Explanation:
What process must metamorphic rocks undergo to become igneous rocks? (metamorphic rocks + ? = igneous rocks)
*Who ever answer CORRECTLY gets mark brainliest*
Answer:
Metamorphic rocks underground melt to become magma. When a volcano erupts, magma flows out of it. As the magma/lava cools it hardens and becomes igneous rock.
Explanation:
So alot of HEAT
The genome of D. melanogaster consists of approximately 1.7 * 108 base pairs. DNA synthesis occurs at a rate of 30 base pairs per second. In the early embryo, the entire genome is repli- cated in five minutes. How many bidirectional origins of synthesis are required to accomplish this feat?
Answer:
9444.44 origins
Explanation:
From the given information:
The genome of D. melanogaster = 1.7 × 10⁸
1 sec = 30 base pair
1 min = 1800bp i.e. (30 × 60 = 1800)
5 Min = 9000 bp i.e. (1800 × 5 = 9000)
Suppose there was a single bidirectional origin, then the process would proceed as:
= 1.7 × 10⁸ / 2*(1 / sec / 30 bp)
= 2833333.333
SInce it only takes 300 seconds in ( 5 minutes), then:
There should be 2833333.333/300 = 9444.44 origins to accomplish suh feat.
What is observation used by scientists
Answer:
Scientists use observation to collect and record data, which enables them to construct and then test hypotheses and theories.
Explanation:
hope this helps
When a person pulls a wagon, the person puts a force on the wagon that makes it move.
The force of a person pulling a wagon is an example of?
Which of the following explains why pearl millet was one of the most important crops in China, India, and West Africa?
It thrived in dry and hot conditions.
It was on a stalk with many clusters.
It was easy to plant and grew rapidly.
It could be made into enough flour to feed many people.
Answer:
It was easy to plant and grew rapidly.
Explanation:
what are the values in biological education
Answer:
Education has the greatest value. All those activities that are good, useful and valuable from educational point of view are considered as educational values. Ruskin, “Education does not mean teaching people to know that they do not know, it means teaching them to behave as they do not behave”.
Explanation:
_______ forms from epiblast?
a. Chorion
b. Placenta
c. Amnion
d. Allantois
How do giant sequoia trees acquire the matter and energy they need to grow so large?
Answer:
Giant sequoias can grow more than 80 meters tall! molecules they need for growth using atoms from the water and air around them. ... Plants take in molecules from water and air around them to make different molecules that can be used for energy and growth.
the widows peak that is seen in some people is an example of what type of trait?
A. single-gene
B. polygenic
B. abnormal
Answer:
A. single-gene
Explanation:
It is controlled by a single gene that has two alleles. The allele for a widow's peak is dominant over the allele for a hairline with no peak.
If a dam is removed, the river and estuary ecosystem will recover
A True
B False
Answer:
true
Explanation:
If the whole world become pure vegetarian, what kind of imbalance in nature will occur
Answer: The animal population will have a dramatic increase
Which type of transport is this an example of? (100 points)
Answer: The Aswer is A.
What is the group number for Calcium and does it have cations or anions???
Answer:
the group number is 2
Explanation:
it is cations
Answer:
A Calcium is in group 2
explanation:
because it forms only the Ca 2+ ion. B Dihydrogen phosphate is the H 2PO 4 − ion (Table 2.4 "Common Polyatomic Ions and Their Names"). Two H 2PO 4 − ions are needed to balance the positive charge on Ca 2+, to give Ca(H 2PO 4) 2.
How has the wide spread use of antibiotics contributed to new Heath care problems
2. What fluvial landform is A?
Answer:
The landform marked with A is an ox-bow lake.
Explanation:
In the image, we can see a river and another fluvial landform right next to it. The river is meandering, moving through the plain in a zig-zag manner. The landform next to it has a half-circular shape, and it seems as it has been attached to the river until recently. In fact, the landform next to the river has been a part of the river until recently, but because of moving too far away from the base it became detached.
The landform in question is an ox-bow lake. This is a lake that has a short lifespan, and it usually has a half-circular shape, being just a few meters away from the river from which it formed. Initially, the ox-bow lake was actually part of the river and its meandering, but as the erosion was moving the water further and further away from the base of the river bed, the water was moving harder and harder, so naturally, the water moves in a direction where it is easier to do so. Little by little, the river starts to move in another direction, closer to its base, and the part of the meander that went too far away gets detached, thus forming an ox-bow lake.
Species in widely separated but similar biomes often appear to display similar characteristics 19 because of:_____.a. evolutionary drift.b. coevolution.c. mutations.d. convergent evolution.
Answer:
The correct answer is d.
Species in widely separated but similar biomes often appear to display similar characteristics because of convergent evolution.
Explanation:
Convergent evolution is called the evolutionary process from which two types of organisms totally unrelated to each other evolve to similar structures (they are morphologically similar as a whole or in parts) for a purpose, that is, they have adapted to means or similar ecological niches. Convergent evolution is manifested by the presence of similar or equal structures in species that belong to different evolutionary lines (they do not share a common ancestor).
Which of the following is release during cellular respiration
Which four abiotic factors make up climate?
temperature, moisture, sunlight, wind.
sunlight, water, biotic factors, the lithosphere.
the atmosphere, rain, light, organisms.
weather, plant life, biotic factors, water.
Answer:
temperature, moisture, sunlight, wind
Explanation:
Answer:
Tempature, Moisture, Sunlight, Wind.
Explanation:
I know this because i had a quiz with this question.
I hope that this helped! Remember Stay safe and Stay smart!!!
A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The dependent variable is
Answer:
The dependent variable is the biological sex of the alligator hatchling.
Explanation:
A hypothesis is essentially a suggested explanation for a specific phenomenon. These hypotheses attempt to offer well-tested reasons for certain observations through experiments.
Experiments are usually carried out under a variety of different conditions to test various hypotheses. To ensure reproducibility, accuracy, and validity of results, several factors must be identified when planning experiments.
For instance, various independent variables are strictly altered and observed while controls are kept constant - this ensures validity and can indicate if the experiment was influenced by external factors. Here, the factor being changed or tested is the temperature, and the factor being observed is the resulting biological sex of the organism.
Compare and contrast an ecosystem driven by photosynthesis to an ecosystem driven by chemosynthesis
Answer:
Chemosynthesis gets its energy from oxidation of inorganic substance, photosynthesis gets its energy from light.
Chemosynthesis could occur just about anywhere there are enough suitable chemicals to oxidize [metabolize], while photosynthesis could occur only when there is sufficient light.
What was the percentage change in length of the chip placed in the 0.0 M solution? (100 points)
I WOULD SAY 6 MY GUY
How do you think magma and sediment form?
Answer:
Clastic sedimentary rocks are made up of pieces (clasts) of pre-existing rocks. Pieces of rock are loosened by weathering, then transported to some basin or depression where sediment is trapped. If the sediment is buried deeply, it becomes compacted and cemented, forming sedimentary rock.
Magma forms from the partial melting of mantle rocks. These little blobs of melt migrate upward and coalesce into larger volumes that continue to move upward. As they rise, gas molecules in the magma come out of solution and form bubbles and as the bubbles rise they expand (as outside pressure gets lower).
Explanation:
Hope this answers your question!
please PLEASEEEE PLEASEE HELP
Answer:
rocks
Explanation:
LAYLA, YOU GOT ME ON MY KNEES.
im so sorry
Higher energy contained in the sugar molecules produced by photosynthesis comes from
A. light.
B. carbon dioxide molecules.
C. ATP. .
D. water molecules.
Answer:
A. light.
Explanation:
Photosynthesis is the process whereby green plants manufacture their food in form of sugars (glucose) in the presence of sunlight as energy source. The process combines carbon dioxide and water to produce glucose and oxygen, with light source from the sun providing the required energy.
High energy is stored in the bonds of the glucose molecule produced (C6H12O6). This energy emanates from the SUN (solar energy), which the photosynthetic process cannot so without.
Where does the energy go after it reaches the top predators?
Answer:
Energy that is not used in an ecosystem is eventually lost as heat. Energy and nutrients are passed around through the food chain, when one organism eats another organism. In each case, energy is passed on from one trophic level to the next trophic level and each time some energy is lost as heat into the environment.
Explanation:
Muscular dystrophy is a neuromuscular disease that weakens a person's muscles. Which main body systems would be involved in this disease? (1 point)
Item 2
nervous, muscular, and respiratory
Item 3
nervous, muscular, and vascular
Item 4
nervous, muscular, and urinary
Item 5
nervous, muscular, and skeletal
Answer:
nervous, muscular, and vascular
Explanation:
Muscular dystrophy (MD) is a group of inherited genetic conditions that cause progressive weakness and the loss of muscle mass. MD is caused by mutations in genes responsible for muscle function. MD not only leads to problems in the muscular system but also may cause disorders of the central nervous system and the circulatory system (especially the heart). For example, Becker muscular dystrophy is a condition associated with arrhythmias and cardiomyopathies. Moreover, MD may lead to vision and speech problems, and result in irreversible structural brain changes.
Answer:
Nervous, muscular and skeletal
Explanation:
A farmer has decided to dig an artesian well into the unconfined aquifer below his crops.
However, water does not fill his well. Why isn't his well working?
Answer:
Explanation:
An artesian well needs the pressure of a confined aquifer.
Answer:
An Artesian well needs the pressure of a confined aquifer.
Explanation:
yes I took the test ,
The basic principle on which Artesian well is working is actually the 'pressure', hence need the pressure to get water from confined aquifer.
Water is constantly in motion and_______. Pls answer ☯︎︎ᴥ︎☯︎︎
Answer:
still
on the top of the ocean or lake the water is always moving but down below the top of the water it will be still or nonmovent
2. What is the term used for low oxygenated waters? Ohypoxic hyperpoxic O aerobic
Answer:
In ocean and freshwater environments, the term "hypoxia" refers to low or depleted oxygen in a water body.