Answer:
Friedrich Miescher discovered nucleic acids in blood cells.
Nuclein was discovered by Friedrich Miescher in 1869
Explanation
In the somewhat early 1880s Albert Kossel further purified the substance and discovered its highly acidic properties. Then he later discovered the nucleobases. In 1889 Richard Altman creates the term nucleic acid. Friedrich Miescher was the first scientist to ever isolate nucleic acid.
Friedrich Meischer was the first who discovered nucleic acids in blood cells. The correct option is A.
Who was Friedrich Meischer?Miescher, Johannes Friedrich, was indeed a Swiss physician and biologist. In 1869, he became the very first researcher to extract nucleic acid.
He also discovered protamine and managed to make several other discoveries.
In the winter of 1868 the adolescent Swiss physician Friedrich Miescher carried out experiments on the chemical composition of leukocytes in the research lab of Felix Hoppe-Seyler at the University of Tubingen, which resulted in the discovery of DNA.
Thus, the correct option is A.
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Which of the following is a false statement about sensation?
A) When sensory information is detected by a sensory receptor,
sensation has occurred.
b) Sensation refers to the way sensory information is organized,
interpreted, and consciously experienced.
c) There are differences in sensation between species.
d)
We have more than five senses.
Answer:
Tha answer is D.This is because all senses depend on sensory receptor cells to detect sensory stimuli and transform them into nerve impulses. Types of sensory receptors include mechanoreceptors (mechanical forces), thermoreceptors (temperature), nociceptors (pain), photoreceptors (light), and chemoreceptors (chemicals).
The statement i.e. false related to the sensation should be option d. It contains more than five senses.
What is sensation?In terms of neurology and psychology, sensation refers to the experience that resulted from the stimulation of the particular sense organ or the sense area in the brain. All types of senses should be based on the sensory receptor cells for detecting the stimuli of sensory and then converted into the nerve impulses.
Therefore, The statement i.e. false related to the sensation should be option d.
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What are DNA machines, according to Kraves?
Answer:
they are machines or devices build to find la DNA trace and copy it multiple times.
Explanation:
DNA machines are machines built to find a DNA line and copy it multiple times, so scientists can read, observe, and find information about the DNA strand. For example, DNA machines can determine if someone is related, if someone has cancer, and it can distinguish a person’s ancestry. Mainly this is how forensic science uses to determine when there's a suspect in a crime.
Answer:
Machines that can find any specific line of genetic information. They then copy the target gene until we are able to visualize it
Explanation: I watched the actual video
Which two statements describe organisms found in the kingdom Plantae?
O A. Their cells lack cell walls.
O B. They have prokaryotic cells.
O C. They are mostly autotrophic.
O D. They are multicellular.
SUBMIT
Answer:
C. They are mostly autotrophic.
D. They are multicellular.
Explanation:
I did this question on A P E X and it’s right hope this helps!!
Proof:
The statements that describe organisms found in the kingdom Plantae is that they are mostly autotrophic and they are multicellular. Thus, option C and D is correct.
What are Eukaryotes organisms?Eukaryotes organisms are organisms whose cells have a nucleus and membrane-bound organelles; whereas prokaryotic organisms are unicellular organisms that do not have membrane-bound structures and/or organelles. Eukaryotic organisms include animals (kingdom Animalia), plants (kingdom Plantae), fungi (kingdom Fungi), and protists (Kingdom Protista).
Multicellular organisms are organisms composed of two or more cells. Multicellular organisms include plants, animals and fungi. Photosynthetic organisms are organisms that make their own food from sunlight (e.g., plants).
Therefore, The statements that describe organisms found in the kingdom Plantae is that they are mostly autotrophic and they are multicellular. Thus, option C and D is correct.
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homeo- comes from a greek word means still the suffix stasis comes from "stoppage" or "standstill" how does this relate to homeostasis
Answer:
The greek word homeo- relates back to homeostasis, as homeostasis is the body keeping it from doing something extreme. Homeostasis tries to maintain your body instead of letting systems wander all over the place, so it is "stopping" it from doing anything irrational.
Explanation:
The connection between producers and consumers is that only
a: heterotrophs can perform photosynthesis to produce energy for all life
b: heterotrophs can perform cellular respiration producing oxygen for all organisms
c: producers use cellular respiration to produce energy for all life
d: autotrophs can use sun energy to produce energy for all organisms
What are the applications of Bioanalytical Service?
Explanation:
hope its wht u r searching for
The atmosphere is necessary for life on earth. Which one of the
following is not one of the life-supporting functions of the
atmosphere?
Select one:
a. Stores aerosol pollutants in the troposphere.
b. Contains gases necessary for cellular respiration.
c. Protects living organisms from harmful solar radiation.
d. Absorbs the sun's energy.
e. Plays an important part in the water cycle and many
nutrient cycles.
Answer:
A.
Explanation:
It is true that aerosol pollutants are present in the atmosphere, but they are usually harmful for life, so it doesn't support life functions. The other choices do help support life functions, so A is your answer.
Plants absorb sunlight through Photosynthesis. Which characteristic of life is this an
example of?
A. Obtains and uses energy
B. Responds to stimuli
C. Grows and develops
D. Homeostasis
Answer:
A. Obtains and uses energy
The characteristic of life shown here is plants obtain and use energy.
What is photosynthesis?By using the energy from sunlight, plants, some bacteria, and some protozoa make sugar, which cellular respiration then transforms into ATP, the "fuel" that all living things use. The green pigment chlorophyll is responsible for the transformation of inefficient solar energy into useful chemical energy. The photosynthetic process makes use of water and emits the oxygen that is vitally necessary for our continued existence.The overall reaction of photosynthesis is:6H₂O + 6CO₂ + light energy → C₆H₁₂O₆+ 6O₂
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Daniel’s doctor is trying to determine the cause of his recent onset of asthma symptoms. Of the information Daniel provided, which would his doctor find most helpful in determining a cause?
a.
Daniel had never experienced asthma symptoms until now.
b.
Daniel notices the asthma symptoms occurs more often during cross country practice.
c.
Daniel’s worst symptom is shortness of breath.
d.
Daniel’s sister was diagnosed with asthma at an early age.
Daniel worst symptom is shortness of breath.
That is also one of the emerging cause in asthma patients
Shortness of breath is the worst symptom which can help doctor determine his onset of asthma symptoms. Therefore, option (C) is correct answer.
What is asthma?A illness that affects your lungs is referred to as asthma. Although it is more prevalent in children than in adults, asthma is a chronic condition that can affect people of any age. In people who suffer from asthma, nighttime and early morning coughing, wheezing, shortness of breath, and chest tightness are common symptoms.
Even though there is no cure for asthma at this time, medication can help control the symptoms so that you can lead a normal, active life. The most common form of treatment involves the use of inhalers, which are handheld medical devices that deliver medication via inhalation. If your asthma is severe, you may also need to take tablets and participate in other therapies.
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What is a similarity between a tulip and a crocodile? A function of both of their outer coverings is to reduce water loss. In both the tulip and crocodile the male reproductive organ is the testes. The tulip and crocodile both have internal skeletons that support them. The outer coverings of the tulip and crocodile both protect the organism.
Answer:
A function of both of their outer coverings is to reduce water loss
Explanation:
Crocodile and Tulips are both distinct species of organisms. Crocodile belongs to Kingdom Animalia while Tulips belong to Kingdom Plantae. However, despite their elaborate differences, they do have one feature in common, which is the function their outer covering performs.
Tulips are temperate plants I.e. like cold regions, hence, their outer covering functions to prevent excessive loss of water. On the other hand, the scaly skin of the crocodiles help them against water loss. This is common between the two different species.
Scientific explanations are the result of scientific reasoning. Whenever scientific reasoning is used,
takes place.
Answer:
The options are
A.) an active consideration of alternative explanations.
B.) a process to totally disprove alternative explanations.
C.) a process to prove a given explanation with logic.
D.) the collection of completely accurate observations.
The answer is D.) the collection of completely accurate observations.
Scientific reasoning results in a thoughtful process and consideration of several informations. This results in Scientific explanation as to the occurrence of such an event.
It is therefore imperative that whenever scientific reasoning is used there is the collection of completely accurate observations.
Three students test the effect of fertilizer on bean plant
growth. Each student conducts one trial. They plant 10
bean seeds in each of three large pots of soil with different
amounts of fertilizer. After two weeks, they measure the
heights of the plants in each pot. Then they find the
average height for each amount of fertilizer. The table
summarizes the results of the experiment.
Effect of Fertilizer on Height of Bean Plants
Amount of fertilizer Average height after 2 weeks (cm)
Trial 1
Trial 2
Trial 3
None
18.9
21.5
40.2
A little
19.5
32.7
39.7
A lot
34.3
33.2
16.5
Which statement describes a pattern shown in the data?
Answer:
i think it b if it not i can look in too it more if you need
Explanation:
The the trend in the data for trial 3 shows that plants grow taller if given more fertilizer, the correct option is b.
What is fertilizer?A fertilizer, also known as a fertilizer, is any natural or synthetic material that is applied to soil or plant tissues to supply plant nutrients.
Fertilizers can be distinguished from liming materials or other non-nutritional soil amendments. There are numerous fertilizer sources, both natural and man-made.
Fertilizers are plant food. Fertilizers replenish the essential minerals lost by crops in the soil. Crop yields and agricultural productivity would be significantly reduced if fertilizers were not used.
It provides nutrients to the plants throughout the growing season. The base fertilizer, along with presowing fertilization and top dressing, forms the fertilizer system used in crop rotation.
The data from Trial 3 show that plants grow taller when given more fertilizer.
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How are air and ocean currents linked?
A. Cold water
produces low-lying,
high-pressure wind
currents and warm
water produces
higher, low-pressure
wind currents.
B. Low-lying, high-
pressure wind
currents produce cold water currents and higher, low-pressure wind currents produce warm water currents
C.Warm water produces low-lying, high-pressure wind currents and cold water produces higher, low-pressure wind currents.
D.Low-lying, high-pressure wind currents produce warm water currents and higher, low-pressure wind currents produce cold water currents.
Answer:
c
Explanation:
because the ocean current circulates the warmth into cold wind current during the day
PLEASE HELP ME!! ASAP Why is it so difficult to tell the impact of pollution in the deep ocean region?
Explanation:
THE OCEANS ARE so vast and deep that until fairly recently, it was widely assumed that no matter how much trash and chemicals humans dumped into them, the effects would be negligible.
hope it helped
All forms of pollution eventually taint water. Air pollution contaminates lakes and oceans. An underground stream, a river, and ultimately the ocean could all become contaminated due to land contamination.
What is the impact of pollution in the deep ocean region?The consequences of the toxins aren't usually obvious or simple to spot. Only in the cases of marine debris, man-made noise, and acidification by atmospheric CO2 can cause and effect be clearly shown.
The unfavorable climate makes it difficult to study the ocean floor. Instruments like sonar can be used to pollution study the seafloor in an indirect manner.
In contrast to mapping the land, the sea floor can't be directly measured from space using radar, since the water there absorbs the radio signals.
Therefore, With the aid of unique vehicles, it may be directly researched. To the ocean floor, certain vehicles transport scientists and their equipment.
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Cilia in the sinuses sweep away: air. carbon dioxide. irritants. water.
Answer:
air and carbon dioxide
Explanation:
Answer:
c
Explanation:
While an important source of freshwater, groundwater is not as widely used as rivers and springs. Please select the best answer from the choices provided T F
Answer:
False
Explanation:
EDGE 2021
While an important source of freshwater, groundwater is not as widely used as rivers and springs. This is a false statement because groundwater is widely used.
What is the use of ground water?The fresh water is present in lakes, springs, rivers, and ponds, and some remains as groundwater. Apart from this, water is present in the ocean and sea, but that can't be used for drinking purposes. The fresh water can have a wide range of uses, such as drinking, using in industry, taking baths, etc.
The groundwater is heavily used for drinking purposes, as this is considered to be less polluted. River and spring water are getting polluted due to the discharge of polluted water from industries. Ground water is misused, and due to heavy water loss, the amount of water keeps on declining. People from different areas are facing the issue of getting drinking water.
Hence, groundwater is heavily used. The statement is false.
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Please Help ! Look at the diagram. What type of cell is shown by number 5?
Answer:
it will be a neuron
Explanation:
it will be unipolar neuron.it has a branch also
i have a request plzz mark this answer as brainliest
Neuron is that cell which indicates by diagram number 5 because the shape is just like the cell of neuron.
Neurons are the fundamental units of the nervous system. These neuron cells are responsible for receiving sensory messages from the external environment and send to nervous system and brain. The brain and nervous system sending commands to the muscles through motor neurons. This neuron cell is different from other types of cell so we can say that the diagram 5 represents neuron cell.
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Why can the more complex sugar cellulose store more energy than the sugar
glucose?
A. Cellulose is made by plants.
B. Cellulose is smaller than glucose.
C. Cellulose has more chemical bonds.
D. Cellulose contains hydrogen atoms.
Answer:
Cellulose has more chemical bonds
Explanation:
It is complex carbohydrates molecule and stores thosands of energy as in glucose
The statement (C) is correct. The cellulose has more chemical bonds.
What do you mean by cellulose?Cellulose is an organic compound with the formula ₙ, a polysaccharide consisting of a linear chain of several hundred to many thousands of β linked D-glucose units. Cellulose is an important structural component of the primary cell wall of green plants, many forms of algae and the oomycetes.
Moreover, cellulose, a tough, fibrous, and water-insoluble polysaccharide, plays an integral role in keeping the structure of plant cell walls stable. Cellulose chains are arranged in microfibrils or bundles of polysaccharide that are arranged in fibrils (bundles of microfibrils), which in turn make up the plant cell wall.
Hence, cellulose is an insoluble dietary fibre consisting of glucose polymers present in all cell walls of plants.
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Match the type of rock with how it forms.
Sedimentary
?
Forms due to cooling
Igneous
?
Can form from decaying
animals
Metamorphic
?
Can only form
underground
Mainly three types of rocks are there namely igneous, sedimentary and metamorphic. Sedimentary rocks are formed by decaying animals, igneous by cooling and metamorphic from underground.
What are types of rocks?Rocks are the aggregates of minerals which have properties of all mineral traces. Each major rock can have different classification systems.
The major rocks can be of three types.
Igneous rocks: these are formed by cooling of magma or lava.Sedimentary rocks: these rocks are formed by dead and decaying animals.Metamorphic rocks: these are formed deep inside the Earth.Thus, the match will be like (i)b, (ii)a, (iii)c.
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why is the dominant allele called dominant.
A. There is always at least one dominant allele
b. there are always more dominant alleles in a genotype
c. it dominates the phenotype
d. the dominant alleles are the only kind that determine phenotype.
Answer:
It dominates the phenotype
Explanation:
Where does respiration take place in the cell?
Answer:
The mitochondria is the location in the cell where most of cellular respiration takes place, although a small amount of cellular respiration does take place in the cytoplasm. The mitochondria is often called the power house of the cell because it is involved with making energy for the cell.
Answer:
aerobic respiration happens in the mitochondria.
When an animal consumes
food what percent of the
food's energy is used for
growth?
A. 5%
B.30%
C.40%
D. 10%
Answer: The Answer Is D
Explanation: Because each of the Trophic levels pass on 10% of their energy to the Trophic level that ate it, if that can make sense.
Answer:
D. 10%
Explanation:
According to the 10% rule, ten percent of energy is passed from one energy level to the next.
Mechanical weathering _____ change the composition of a rock, whereas chemical weather ______. Question 8 options: Does; does not Does not; does
Answer:
Mechanical weathering does not change the composition
Chemical weathering does change the composition
Explanation:
Which is the immediate effect of being infected by last season's flu virus? A. get the last season's flu virus B. receive this season's flu vaccine C. Immune to last season's flu virus D. Produce antibodies that attach to this season's flu virus.
Answer:
probley
Explanation:
A. get the last season's flu virus
or
C. Immune to last season's flu virus
Growing two species of
Paramecium in the same test
tube is an example of?
A. Intraspecific competition
B. The founder effect
C. Interspecific competition
D. A population bottleneck
Answer:
Intraspecific Competition
What plant physical structure or organ has a similar function to fish scales? Stem Stamen Bark Flower
Answer:
Bark
Explanation:
The scales on the fish serves as protection for the fish. And the tree bark serves as protection for the tree.
Bark has a similar function to fish scales and plant physical structure.
What is a fish scale?
"A fish scale is a small rigid plate that grows out of the skin."
What are the function of fish scales?
Fish scales primarily serve two purposes:
protection locomotionWhat is a bark?
"Bark is the outermost layers of stems and roots of woody plants."
What is the main function of a bark?
"The main function of bark is to protect the tree from the outside world."
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How would you explain to an athlete why damaged joint ligaments and cartilages are so slow to heal following an injury?
Answer: They have little to no direct blood supply.
Explanation: “Ligaments and cartilage injuries are very common injuries for people who practice sports. Damaged joint ligaments and cartilage are slow to heal because these structures don't have a significant blood supply, which brings necessary fluid and nutrients to the injured place. These nutrients and fluids are essential for damage repairing. If ligaments and cartilage become injured, their limited blood and nerve supply result in a longer recovery and healing period.”
The reason why damaged joint ligaments and cartilages are so slow to heal
is as a result of little blood flow within them.
Cartilages and ligaments are connective tissues which help to connect
bones and other parts together. This part of the body has very little blood
flow and a result blood carrying nutrients aren't adequately supplied to the
region.
Different nutrients and compounds which promote healing and repair of
worn out tissues are found in the blood and failure to reach these regions is
why healing is slow.
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Activity Many farmers and gardeners compost their plant and animal waste. The living material naturally decays in compost bins, forming a dirt-like substance that’s rich in nutrients. The next season, farmers use this substance as a natural fertilizer for their crops. A biology student has grown tomato plants for several years. Until now, he used an artificial fertilizer formulated for tomato plants. This fertilizer caused his plants to grow faster and taller than they grew in unfertilized soil. The student wants to know whether using natural compost will cause his tomato plants to grow faster and taller than his artificial fertilizer. Answer the following questions to plan an investigation using the steps of the scientific method and help the student find the answer to his question. Part A What are the student’s observations and inferences before he starts his investigation?
Answer:
OFFICIAL ANSWER (do not copy verbatim):
The student has observed that artificial fertilizer makes his plants grow faster and taller than plain soil. He knows that compost is a natural fertilizer. So, he infers that compost will make his plants grow at a faster rate than they grow in plain soil.
Explanation:
Which is one reason why hydrogen is considered a better fuel source for cars? It is nonrenewable. It produces carbon dioxide. It emits no harmful emissions. It combines with water to produce electricity.
Answer:
I’m pretty sure it’s .D
Explanation:
Hydrogen is considered a better fuel it emits no harmful emissions.
Hydrogen:Hydrogen is consider as clean fuel, when it is consumed with fuel cell produces only water. It is produced from variety of domestic sources such as natural source and renewable source such as solar and wind.
Hydrogen fuel can be used in:
Renewable liquid fuelsgasified biomassgasified coalDieselOnce hydrogen gas is generated it produces electrical power in a fuel cell, emitting water vapor and air. Hydrogen's energy content by volume is low.
Hydrogen storage is a challenge because it requires high pressures, low temperatures, or chemical processes to be stored compactly. Hydrogen fuel should now be feasible and easily available so that people can easily buy it.
Therefore, Hydrogen is considered a better fuel it emits no harmful emissions.
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does anyone know the answer to question 5 because i am really struggling?? thank you!!
Answer:
A. is correct... C and D are correct but B is wrong
Explanation:
hope this helped :)
u dont have to trust my answers! Lol i suck at this but good lucks!!! :))