Answer:
Friedrich Meischer discovered nucleic acids in blood cells.
Explanation:
Nucleic acid is one of the four biological molecules. It is a polymer made up of monomeric units called Nucleotides. Nucleic acids make up two important molecules namely: DNA and RNA.
Nucleic acid was first discovered in the 1860's by a then young Swiss scientist called Friedrich Miescher. He was working on white blood cells and discovered a new compound that was different from the already known biomolecules i.e. carbohydrates, proteins, and lipids etc. This compound isolated by Friedrich Miescher was then called "NUCLEIN" because he got it from the nuclei of a blood cell.
His discovery was later proven to be Deoxyribose nucleic acid (DNA), the genetic material.
Friedrich Meischer first discovered nucleic acids in blood cells. Therefore, option A is correct.
Nucleic acids are large biomolecules. They play a fundamental role in the storage, transmission, and expression of genetic information in living organisms. They are composed of monomeric units called nucleotides, which are linked together to form long chains. They are of two types: DNA (deoxyribonucleic acid) and RNA (ribonucleic acid).
The arrangement and sequence of nucleotides in nucleic acids provide the basis for the storage and transmission of genetic information.
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Is Central Park a biome yes or no and explain please
Answer:
no it is not,it is part of a biome but it it self is not one
Explanation:
Fionna was told by her doctor to eat more foods that are high in calcium and potassium. Which statement best explains why Fionna’s doctor made this recommendation? Fionna’s bones are weak and break easily. Fionna’s bone marrow is not making enough blood. Fionna’s joints are swollen and do not move properly. Fionna’s tendons are strained, and she cannot walk.
Answer:
option A
Explanation:
Potassium and calcium are critical for bone development and repair. Deficiency can lead to easy breakage.
ARE FINS LIMBS?? GOOD ANSWER OR ELSE I WILL REPORT YOU.
Answer:
Fins are limbs.
Explanation:
A limb is considered an appendage of any body. Since a fin is an appendage of an animal body, it is indeed a limb.
1) explain how a normal eye accommodates to focus on a nearby object ?
2) why is accommodation not possible after cataract operation ?
plz help me !!!!!!!
will give the brainliest!
pls answer correctly.
arteriolar dilation throughout the body causes ur ine production to decrease because:
A) osmotic pressure of the blood plasma increases
B) blood pressure in the glomerular capillaries decreases
C) blood pressure in the glomerular capillaries increases
D) osmotic pressure of the blood plasma decreases
HELP ME PLEASE!!!!
vasodilatation causes a decrease in blood preasure so the answer is (B)
Which is the first step that geologists must do to compare rock layers at distant locations?
find the absolute age of rocks at both locations
compare a layer at one location to layers at other locations
identify index fossils in one or more layers at one location
collect fossils from different locations to study the organisms' lifestyles
Answer:
The correct answer is C
Explanation:
The first step a geologist would take in order to compare rock layers at distant locations is to Assign a date to the rock layers.
That is, they a relative age to a layer of rock at one point and then give the same age to matching layers at another point. By studying and identifying index fossils, geologists are able to match the rock layers.
Cheers!
The first step that geologists must do to compare rock layers at distant locations is to identify index fossils in one or more layers at one location. This is further explained below.
What are rock layers?Generally, rock layers is simply defined as Strata, another name for rock layers, and stratigraphy is the science of strata.it shows rock formation over time.
In conclusion, Rock layers are key to geological research of the Environment.
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What is regional terminology? a set of vocabulary words that healthcare workers use to refer to specific regions of the body a set of vocabulary words that healthcare workers use to refer to specific areas of the country a set of vocabulary words about the body that are specific to certain areas of the country a set of vocabulary words about the body that are different in different areas of the country
Early in earths history while the planet was in a melted state the most dense elements formed earths
A)core
B)crust
C)seas
D)atmosphere
Which type of cell is pictured on the right?
eukaryotic
prokaryotic
Answer:
Prokaryotic Cell
Explanation:
You can identify that it is a prokaryotic cell since it doesn't have a nucleus, and has a more box-rounded shape.
Hope this helps! :)
Describe how Stella’s view of these cells and their parts changed as she transitioned through the three levels of magnification. Be sure to identify at least one cell structure or part of the paramecium in your description.
Answer:
The paramecium body.
Explanation:
1. The objective lenses on a compound light microscope doess have powers that start of as smallest to highest power, 4x, 10x, and 40x on the maximum power setting. This means that the sample can be magnified either, 40x, 100x or 400x.
At 40x magnification Stella will see organism 5mm.
At 100x magnification Stella will be able to see organism 2mm.
At 400x magnification Stella will be able to see organism more closely, 0.45mm, or 450 microns.
2. Paramecia are shoe shape or molded and almost transparent and shrouded in a defensive pellicle.
Pellicle capacities like skin and shields them from the components. For movement they have cilia.
Answer:
At 40x, Stella could see the cells, but they looked really small. At 100x, Stella was able to see the cells to the point where she could see most of them up close. At 400x, Stella could see the cells one by one close enough. Some of the cells are shoe-shaped, which is one of the characteristics of paramecium. The brown at 400x next to the orange is the one that mostly looks like a shoe.
A student measures the range of sound frequencies that the human ear can hear by playing sounds for volunteers between 10 and 30,000 hertz
Answer:
B. Ordered
Explanation:
we found complete question that is: A student measures the range of sound frequencies that the human ear can hear by playing sounds for volunteers between 10 and 30,000 Hertz and asking them to raise their hand if they were able to hear it. What type of variable is the independent variable in this experiment?
A. Categoric , B. Ordered , C. Continuous , D. Discrete
solution
Volunteers between 10 and 30,000 Hz ask the human ear to raise their hand when the student is measuring the range of sound frequency and if they can hear it; This requires consistent answers from the experiment participants on whether or not they can hear the sound. Therefore, the category can be classified under the ordinal category ordered.
as eg. Highest Education Level has variable Elementary School, High School, many College and College Graduate
A wave travels at 48M/S and has a frequency of 12 HZ what is the wavelength of the wave
Answer:4 m
Explanation:
V(speed)=f(frequency)×lamda(wavelenght)
wavelenght=speed/frequency
Answer:4 meters
V (speed) = f (frequency) × lamda (wavelenght)
Wavelenght = speed/frequency
PLEASE HELP !!!
The biotic potential of a population
A. directly dependent on the size of the population.
B. causes changes in death rates without affecting birth rates.
C. is the maximum rate at which a population may increase.
D. causes changes in birth rates without affecting death rates.
Answer:
C- is the max rate at which a population may increase
Explanation:
A population of living species to increase under environmental conditions.
The biotic potential of a population is the maximum rate at which a population may increase. Hence option C is correct.
The abiotic potential is the maximum rate at which a population can grow under ideal conditions, such as unlimited food, water, and space. It is determined by the species' reproductive rate and the number of offspring produced each breeding season.
The biotic potential of a population is not directly dependent on the size of the population. In fact, the biotic potential of a population is usually the same regardless of the size of the population.
However, the actual growth rate of a population will depend on the size of the population, as well as other factors such as the availability of resources.
The biotic potential of a population does not cause changes in death rates or birth rates. It is simply the maximum rate at which a population can grow under ideal conditions.
The actual growth rate of a population will depend on a number of factors, including the biotic potential, the availability of resources, and the presence of limiting factors.
Therefore option C) is the maximum rate at which a population may increase is correct.
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which of the following are primary consumers
A) rat snakes
B) gray squirrels
C) red maple trees
D) sweet gum trees
Which of the following is an example of reproductive isolation? two populations of finches that cannot produce viable offspring two populations of finches that have different feather colors two populations of salamanders that live in different lakes two populations of salamanders that have different tail lengths
The correct answer is A. Two populations of finches that cannot produce viable offspring
Explanation:
Reproductive isolation is a biological and evolutionary phenomenon that prevents two species from successfully reproducing, this means they cannot produce offspring or the offspring is not fertile, even if these species had a common ancestor. Additionally, as a result of reproductive isolation, each species keeps its genes and features. This phenomenon is best exemplified in "Two populations of finches that cannot produce viable offspring " because this refer to the barriers for different species to reproduce or produce viable offspring, which is the focus of reproductive isolation.
Answer:
A on edge
Explanation:
Prepare a diet chart to provide balanced diet to a twelve-year-old child. The diet chart should include food items which are not expensive and are commonly available in your area.
Foods that you should consume in a diet:
Nuts, such as: Almonds
Fruits, such as: Apples, raspberries, etc.
Vegetables, such as: Carrots, pumpkins, etc.
Wild meats, such as: Fish, deer, etc.
Drinks, such as: Protein shakes, water, etc.
Hope this helps!
What did the peppered moths signify in evolution.
Answer: The evolution of the peppered moth is an evolutionary instance of directional colour change in the moth population as a consequence of air pollution during the Industrial Revolution. The frequency of dark-colored moths increased at that time, an example of industrial melanism.
What is the general term for any carbohydrate monomer?
Answer:
Monosaccharide are called as simple sugar because it consists of one sugar unit that can not be further broken down into the simpler form.
Answer:
Monosaccharide
Explanation:
Monosaccharide are called as simple sugar because it consists of one sugar unit that can not be further broken down into the simpler form.
ANSWER ASAP!!! Which of the following is not true concerning the elements of a quality life? a. It might include financial and physical security. b. They are considered stable over a lifetime. c. It is highly individualized. d. It depends upon personal environment and relationships.
Answer:
B. They are considered stable over a lifetime
Explanation:
The only statement that is not true concerning the definition of life in general is that "They are stable over time." This can be proven in the early years of earth's life wherein different microorganism and macroorganism lives. Over time, they evolved into another species that is most suitable to the kind of envionment the earth is evolving.
it acts to In hot air sterilization, the water that is removed from the cell is important to this type of sterilization mainly because Group of answer choices it acts to protec the organic molecules from oxidation it acts as products/reactants it acts to stablize the temperature it acts as a solvent
Answer:
it acts as products/reactants it acts to stablize the temperature
Explanation:
Dry heat sterilization is very useful to be used in materials that cannot come into contact with forms of heat sterilization such as steam. It is also widely used for objects that cannot come into contact with very high temperatures.
This type of sterilization is done by buckling, incineration, intra-red rays or hot air oven. In any case, it is important that the water is completely removed, both from the object and from the sterilization vehicle. This is because water is easily used by possible microorganisms to stabilize the temperature in their bodies, which can cause sterilization failures.
When water sticks to a cup as part of a science experiment, the attractive property is a/an _______ property.
Answer:
Adhesion
Explanation:
Technically, you need cohesion(water sticking to itself through attraction of hydrogen bonds) to get adhesion(water sticking to other surfaces through attraction of hydrogen bonds). They are rather intertwined. But for this basic answer, it is adhesion.
How many inherited traits are considered in a mono hybrid cross
Answer:You amswer is 2 or 7 ok
Answer:
Two monohybrid traits
Explanation:
help ;pleaseeeeeeeeeeeeeeeeeee
Answer:
11.) Litre - Just bigger than a quart
12.) Gram - Mass of a dollar bill
13.) Centimeter - width of a fingernail
14.) Kilometer - 0.6 miles
15.) Meter - Just bigger than a yard: 3.3 feet
16.) Kilogram - 2.2 pounds
17.) Millimeter - Width of your pinky
Hope this helps you
Answer:
11)Liter = just bigger that a quart
12)Gram = Mass of a dollar bill
13) Centimeter = Width of a your pinky
14)Kilometer = 0.6 miles
15)Meter = Just bigger than a yard :3.3 feet
16)Kilogram = 2.2 pounds
17)Milimeter = Width of a finger nail
Which ape virus is most closely related to the HIV virus that has killed about 39 million people due to aids
Simian Immunodeficiency Virus ape virus is most closely related to the HIV virus that has killed about 39 million people due to aids.
What are the symptoms of simian immunodeficiency virus?Simian immunodeficiency virus is a type of retrovirus that infects non-human primates of at least 45 different species on a long-term basis.
SIV is spread by direct contact with blood or other contaminated bodily fluids. It is ubiquitous among nonhuman primates, and in most species it does not appear to cause significant sickness.
The SIV virion is a dimeric pair of positive-sense single-stranded RNA genomes enclosed in a spherical to pleomorphic glycoprotein envelope measuring 110–120 nm, which is 110x50 nm in size.
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What happens to a population when its larger than the available resources can accommodate
Answer: They would die off.
Explanation:
simple .too many people would have to much of the resource used and then there would be no more resourses to use and the population would die off
A person's ________
is built on his/her cultural components and shapes the way he/she view's the world.
genetic makeup
status
background
health
Answer:
Background
Explanation:
True or false, diagram A is an energy pyramid with the correct simple concepts??
Answer:
True
Explanation:
according to the evolutionary approach what are the three body tyoes regarding personality
Answer:
ectomorphs, endomorphs, and mesomorphs
which letter a b c or d represents respiration photosynthesis
Answer:
Forgive me if I'm wrong but I believe the answer is ...
Respiration: D
Photosynthesis: A
Hope this helps!
- Quinn
Answer:
A = Respiration
C = Photosynthesis
Explanation:
Respiration is the act or process of breathing. Photosynthesis is the process in which green plants use sunlight to make their own food.
which is a reason that many organisms that have existed on Earth have left no fossils