Answer:
a phosphate group, a pentose sugar, a nitrogen base
Explanation:
nucleic acid is a polymeric macromolecule made up of repeated units of monomeric 'nucleotides' composed of a nitrogenous heterocyclic base which is either a purine or a pyrimidine, a pentose (five carbon) sugar (either ribose or 2′-deoxyribose), and one to three phosphate groups.
Jenny was worried about how some pollutants in a lake near her home were affecting the levels of dissolved oxygen in the water, so
she designed the following experiment.
First, she collected five 10-gallon aquariums and filled each with water from her tap. Then, she tested the initial oxygen level of the
tap water.
Next, she put a tablespoon of different pollutants, including gasoline, cooking oil paint, and lawn fertilizer, in each of four of the
tanks. She stirred those four tanks for 1 minute each to help the pollutant dissolve or spread out in the tank.
Finally, she tested the oxygen level in each tank once every hour and recorded her results in the table below.
Tank
Pollutant
in water
Initial
O2 level
(without pollutants)
O2 level O2 level
after 1 hour after 2 hours
1 none
2 gasoline
3 cooking oil
4 paint
5 lawn fertilizer
What is the dependent variable in Jenny's experiment?
OA. initial oxygen level in tank without pollutant
OB. levels of Oz in each tank
OC. amount of pollutant put in each tank
OD. pollutant in each tank
Answer:
levels of o2 in each tank
Explanation:
You can control the pollutant levels.I am super bad at explanations but i answered this question and got it right .
if your leg was to get cut off where would you feel the pain?
The thigh area will feel much more pain as when leg is cut off , all nerves are together in thighs, so more pain will be there.
Hope it helps you... pls mark brainliest if it helped you
Answer:
The nerve(s) in your leg.
Explanation:
It's not your leg that will hurt but the nerve in your leg. So wherever the leg is cut, the nerves will have to be cut as well, but also after one of your limbs is amputated, you may feel like the limb is still there. That's called phantom sensation. You might feel pain in your limb even though it is physically not there.
describe how the principle of osmosis is applied when preserving mangoes using sugar solution and making salted fish by using salt
Proteins can be denatured in many ways.
Which of the following will NOT denature
a protein?
A. pH
B. temperature
C. too many enzymes
D. salt content
Answer:
Explanation:
However, at very high salt concentration, the increased surface tension of water generates a competition between protein and salt ions for hydration. Salts strip off the essential layer of water molecules from the protein surface eventually denaturing the protein
Too many enzymes cannot denature protein.
Enzymes are a type of protein so they will not get denatured in presence of one another.Enzymes are proteins that speed up any biochemical reaction in the body.What is denaturation of protein?It is a process of modifying the molecular structure of a protein.It involve breakage of many of the weak bonds within the protein molecule that are responsible for the structure of protein and its order.It can happen due to high temperature, pH, salt concentration and mechanical concentration.To know more about denaturation of protein here
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How do scientists study life?
Answer:
Scientists usually conduct research in laboratories using a wide variety of other equipment. Some conduct experiments involving animals or plants.Biological scientists can now manipulate the genetic material of animals and plants, attempting to make organisms more productive or resistant to disease.
Explanation:
Scientists usually conduct research in laboratories using a wide variety of others equipment. Some conduct experiments involving animals and plants. Biological scientists can now manipulate the genetic material of animals and plants , attempting to make organisms more productive or resistant to diseases. Biological scientists study living organisms and their relationship to the environment. scientists usually conduct research in laboratories using a wide variety of other requirements.
The taxon between the class and family is the ________.
a genus
b order
C species
d phylum
Answer:
The answer is order.
Explanation:
Kingdom, phylum or division, class, order, family, genus, species.
Why is sugar essential to life?
Which of the following is an example of adaptive radiation?
Answer:
Australian marsupials ,
cichild fish
Darwin's finches
a striking example is the radiation, begin in the paleogene periods of basal mammalian stuck into form adapted to running ,liping, flying, and swimming.
What is cholinergic urticaria and what are the treatment options?
Answer:
below
Explanation:
Cholinergic urticaria is when your skin forms hives and makes your skin red in those specific areas. This usually forms when your body temperature rise, for example, being in the sun, exercising, etc. There is no 100% cure but you can treat it to the best of your ability at home by keeping your body temprature down.
Best of Luck!
A strain of bacteriophages was grown in BrdU. BrdU is a base analog, that when incorporated into DNA, causes the DNA to fluoresce yellow. Another culture of the bacteriophage strain was grown in media containing cysteine (an amino acid) linked to a red fluorescent molecule. Each strain of bacteriophage was allowed to infect unlabeled cells. Follow the patterns of fluorescence through infection. How would this experiment help prove that DNA is the genetic material
During transformation,
a. a prokaryote is changed into a eukaryote.
b. a cell takes in DNA from outside the cell.
c. foreign RNA is inserted into a plasmid.
d. a clone is produced.
Answer:
b. a cell takes in DNA from outside the cell.
In a human population of 1000 ,840 are tongue rollers and 160 are not tongue rollers .What is the frequency of the dominant allele
Answer:
0.6
Explanation:
What microscope would be appropriate for viewing the surface texture of a salt molecule?
Transmission Electron Microscope
Scanning Electron Microscope
Dissecting Microscope
Light Microscope
Answer:
the scanning one
Explanation:
it's just choice
The optic nerves pass through the ----- of the ------- bone.
Answer:
sphenoid bone
Explanation:
Extracranial. The optic nerve is formed by the convergence of axons from the retinal ganglion cells. These cells in turn receive impulses from the photoreceptors of the eye (the rods and cones). After its formation, the nerve leaves the bony orbit via the optic canal, a passageway through the sphenoid bone.
write two advantage from the study of life cycle of mosquito
Answer:
Knowing the different stages of the mosquito's life will help you prevent mosquitoes around your home and also help you choose the right pesticides for your needs, if you decide to use them. All mosquito species go through four distinct stages during their life cycle: Egg - hatches when exposed to water.
The two advantage from the study of life cycle of mosquito are:
•It enables us to have better understanding of the ways to reduce and prevent mosquitos bites.
•It helps us to go for the right mosquitos spray that will help in controlling the spread of mosquitos.
Mosquitoes is an insect that be found any where which is why preventing measure needs to put in place so as to avoid or prevent them from biting you skin so as to suck up blood or transmit virus.
Mosquitos are often very energetic especially at sunset to sunrise and they can be found at:
• Home
•Outside Home
•Where their is stagnant water etc
The disease or virus transfer by mosquitos is Malaria, this is cause by Anopheles mosquitoes as it tend to carry the virus in which after biting it victim it transfer the virus into the blood stream of the victim causing what is called Malaria .
Inconclusion The two advantage from the study of life cycle of mosquito are:
•It enables us to have better understanding of the ways to reduce and prevent mosquitos bites.
•It helps us to go for the right mosquitos spray that will help in controlling the spread of mosquitos.
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state why in 2010 the number of people living with HIV increased but the number of newly infected people decreased
Answer:
because There were approximately 37.6 million people across ... marking a 30% decline in new HIV infections since 2010.
Environmentalists claim that climate change could lead to major biological change on Earth. Which of the following statements supports the biological predictions related to climate change?
A) Sea levels will fall, causing migration of 50% of the world's human population.
B) Carbon dioxide levels and temperature changes are direct related in the studies.
C) Studies show that atmospheric carbon dioxide has increased over the past 150 years.
D) The distribution of many organisms has already shifted as a result of warming.
Answer: D: The distribution of many organisms has already shifted as a result of warming.
Explanation: I just took the quiz on FLVS
The statement that supports the biological predictions as it relates to change in climate is : ( D ) The distribution of many organisms has already shifted as a result of warming
What is climate change ?Climate change is the long term change in the Average weather conditions of a region, province or territory. Climate change is associated to global warming caused by the activities of man which affects the weather conditions of a given region in the long term.
As the climate continues to change, many organisms begin to redistribute themselves to regions with favourable weather conditions, and this is the biological prediction/effect of climate change on the environment.
Hence we can conclude that The distribution of many organisms has already shifted as a result of warming is the correct statement.
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*
Prior to the big bang, there was only
O Heat
O Space
O Energy
O Time
Answer:
O space
Explanation:
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HELP THSI IS 100 POINTS
A group of students is doing an experiment where they roll a ball down a
ramp and then measure how far across the floor it rolls. The factors that are
the same each time are: - the ball - the ramp, including its length and angle
to the surface - where on the ramp the ball starts from The students do
change the type of surface the ball rolls on. What is the independent
variable in this experiment? *
ramp
ball
distance
type of surface the ball rolls on.What is the independent variable in this experiment
Answer:
The ball
Explanation:
because it is the variable that is altered/used during this scientific experiment. It would not be the ramp or distance because the ramp is what's being tested or measured (dependent variable) and the distance is what stays the same (controlled variable).
Why is the stem of aquatic plants weak
Answer:
In general, aquatic plants need to bend to the force of water. Water is dense and exerts a strong force.
Explanation:
this is the answer
hope it helps
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:DD
Answer:
The stem of the aquatic plants is flexible.
Explanation:
Because it helps the leaves to float.
por que un globo con aire se agranda al sol y se achica en la heladera
Answer: El globo congelado se contrajo porque la energía cinética promedio de las moléculas de gas en un globo disminuye cuando la temperatura disminuye. Esto hace que las moléculas se muevan más lentamente y tengan colisiones menos frecuentes y más débiles con la pared interior del globo, lo que hace que el globo se encoja un poco.
Explanation:
Photosynthesis stops due to the atmosphere filled with dust after a meteor strike on Earth. Why would the dust cloud stop photosynthesis?
The rays of sunlight has been obscured by the dust cloud thereby stopping photosynthesis.
Photosynthesis is defined as the process which green plants use in the production of their own food. in the presence of sunlight.
A meteor strike occurs when an extraterrestrial object such as an asteroid or meteoroid passes through the earths atmosphere or hits the earth. this can lead to the atmosphere being filled with dust especially when the incident hits the earth surface.
In the process of photosynthesis, the light stage depends on sunlight to take place.
Because the rays from the sunlight has been hindered by the dust after the meteor strike, the light stage of photosynthesis is inhibited (stopped). Therefore, photosynthesis cannot occur.
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paul says that i the number 6367 one 6 is 10 times as great as the other 6 is he correct why or why not?
Answer:
hffbdhddjsndhhshdhuz
How can you detect and manage a patient’s cancer when it is constantly evolving and adapting?
Answer:
Cancer
Explanation:
they start to lose hair and they get sick because of cancer
Using the above pedigree, explain why Individual III-3 has albinism even though both of his parents lack this trait.
Answer:
Heredity | Khan Academy
Reading a pedigree · Determine whether the trait is dominant or recessive. If the trait is dominant, one of the parents must have the trait.
Answer:Using the above pedigree, explain why Individual III-3 has albinism even though both of his parents lack this trait.
Explanation:
Which explains why secondary succession generally occurs more rapidly in an area than does primary succession?
A) Average precipitation is higher
B) Moderate climatic conditions exist
C) Pioneer species are microscopic
D) Soil formation has already occurred
Answer:
Secondary succession usually occurs faster than primary succession because the substrate is already present. In primary succession, there is no soil and it needs to form. This process takes time, as pioneer species must colonize the area, they must die, and as this happens over and over again, soil forms.
Please identify the stimulus (S) and response (R).
A dog is hot so he lies in the shade.
Which is the stimulus?
A. Dog gets hot.
B. Dog finds shady spot.
Answer:
A. Dog gets hot
Explanation:
a stimuli reaction is where your body is reacting due to the change in environment. in this question the dog is trying to maintain homeostasis.
DO YOU THINK IT CAN BE COMPLEMENTED
WITH BIOMES? (The composting)
Answer:
yeah because some biomes r put n2 everything
Explanation:
please solve this fast
Which best describes the scientific process?
Answer:
making conjectures (hypotheses),I hope it's helps you