'A theory' is an element in the scientific process cannot be changed.
What is a theory?
A theory is an explanation or set of principles that attempts to explain a phenomenon. It is based on observations and hypotheses, and is used to make predictions about future events. Theories are often tested through experimentation and observation, and may be revised or rejected if the evidence does not support them.
A theory is an explanation for why and how something works that is supported by evidence and has been tested multiple times. Once a theory has been established, it cannot be changed.
Hence, Option A is correct.
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DNA is an example of a nuclei case acid true or false
Answer:
The term nucleic acid is the overall name for DNA and RNA.
Explanation:
They are composed of nucleotides, which are the monomers made of three components: a 5-carbon sugar, a phosphate group and a nitrogenous base. ... The two main classes of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).
What information about the organisms best helps the scientists to determine the evolutionary relationships among them?
Anatomical features
Reproductive strategies
DNA Sequences
Habitat types
Answer:
its c: DNA Sequences
Explanation:
I got it right
Why do cells continue to divide in adult organisms?
Answer:
Although most of the tissues in adult organisms maintain a constant size, the cells that make up these tissues are constantly turning over. Therefore, in order for a particular tissue to stay the same size, its rates of cell death and cell division must remain in balance.
Explanation:
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the greatest genetic variation in a species is found in a offspring that forms by...
A:Asexual Reproduction
B:Sexual Reproduction
C:Budding
D:Cell Division
how does the cell work
which of the following is a stimulus, which response?
A. The recess bell ringing in a elementary school
B. Your mouth watering at sight of food on a plate
C. A sudden drop in air temperature
D. A flu virus entering your body
E. Getting "butterflies" in your stomach before giving a speech
Answer:
A. Stimulus
B. Response
C. Stimulus
D. Stimulus
E. Response
Explanation:
I need help so I'm giving 100 points away if you help with this question
The use of grass filter _______ can help block nitrates and pesticides from washing into the water system in runoff from cultivated fields
there are no answer choices so please answer slowly and think about it
Answer:
buffer zones
Explanation: rather than planting the crop right up to the water you leave some as grass or actually plant grass in that buffer zone to filter out and prevent chemicals from reaching the water system
Explain how Charles Darwin’s theory of natural selection would account for evolution of populations. Use the following terms in your explanation: mutation, variation, competition, adaptation, fitness
Explanation:
charles darwin proposed thoery of natural selection.he had collected imnumerable specimens of plant and animals.he published concept survival of fittest. while explaining he says that There is always competition for food.only those organism survive which shows adptations in various reasons. it thoery of natural selection.
There are some objections,
1. natural selection is not only factor responsible for evolution.
2. darwin did not mention uesful and useless modifications.
3. There is no explanation about slow and abrupt changes
Astrology work help needed
Answer:
june 18 tell me if this is wrong i got it from goo gle
Explanation:
June 20 to 21 is the start of summer and longest day of sunlight in the Northern Hemisphere and the start of winter and shortest day of sunlight in the Southern Hemisphere. Though it might seem like the summer solstice would also be when the sun rises earliest and sets latest, it is not.
Question 1/7 The Nile River carries sediments to the ocean. Over time, the sediments are compressed as more sediments are deposited on top of them. Which type of rock will be formed?
Answer:
Sedimentary Rock
Explanation:
Sedimentary rocks are formed from pieces of sediments or other existing organic matter or rock.
The sedimentary rock formation process begins with weathering which involves the breakdown of the sediments into small fragments. The next process is erosion, where water like the Nile River carries them to other places - in this case, the Ocean.
Over time, the sediments settle and become compressed as more sediments are deposited on top of them.
This leads to the formation of Sedimentary Rocks.
how does cell division help in growth and development of somatic cells and in gamete formation?
════════ ∘◦❁◦∘ ════════
[tex] \mathbb{CELL\:DIVISION\:(MITOSIS)} [/tex]
════════════════════
Well, im not sure what somatic cell is. But, the reason why cell division help in growth and development is because the main goal of cell division is to make more cells right? This is also why we keep growing (like taller/bigger) because more cells in our body because of that cell division.
#see pic of how cells in our body divide during mitosis
#sorry i borrow this ans for my latex experiment :v
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Mitosis occurs in somatic cells this means that it takes place in all types of cells that are not involved in the production of gametes. Prior to each mitotic division, a copy of every chromosome is created; thus, following division, a complete set of chromosomes is found in the nucleus of each new cell.
A 154-lb adult man performs a moderate level of physical activity and regularly consumes 2700 Calories a day. State whether the weight of the man will most likely decrease, increase, or remain the same. Use information from the data table to explain your answer.
The weight of the man will...
Explanation...
Answer:
Increases.
Explanation:
A 154-lb adult man regularly consumes 2700 Calories a day and performs a moderate level of physical activity, the weight of that individual increases because a 154-lb adult man needs only 2450 Calories a day and that person consumes 2700 Calories a day which is higher than their needs so these extra calories stored in their body and as a result the weight of that person increases.
in which Domain & Kingdom would scientists classify an organism, whose cells contain a nucleus, has cell walls made of chitin, and does not have chloroplasts?
Answer:
The correct answer is -
Domain: eukarya
kingdom: fungi
Explanation:
A cell with a nucleus and cell wall made up of the chitin and does not have chloroplast, are all the characteristic features of an organism of kingdom fungi which is a group of eukaryotic organisms.
The cells with the nucleus are grouped in the domain eukarya while the prokaryotic organism does not carry a nucleus in their cell and divided into Archaea and bacteria. The chitinous cell wall without any chloroplast in the cell is one of determining features of the fungi kingdom.
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DNA molecules are the instructions to make what?
-proteins
-carbohydrates
-lipids
-plasmids
Answer:
A
Explanation:
DNA is used to make mRNA, which is then used alongside tRNA to make a polypeptide chain. This chain folds to make a protein.
__________ are surroundings with high levels of exposure to industrial chemicals.
A)
Second-growth forests
B)
Point sources
C)
Old growth forests
D)
Rangelands
E)
Toxic environments
Answer:
E)
Toxic environments
Explanation:
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Anxiety sensitivity is the apparent cause, origin, and development of a particular disease.
Please select the best answer from the choices provided
T
F
Answer:
False
Explanation:
Anxiety is rarely caused by physical diseases.
Anxiety sensitivity is not the apparent cause, origin and development of a specific disease.
What is anxiety sensitivity?It is the fear of sensations or behaviors related to the experience of anxiety, and a misunderstanding of such sensations as dangerous. Some of the sensations of the body associated with anxiety like palpations and nausea are misinterpreted as harmful experiences, which makes the fear or anxiety to intensify.
Anxiety sensitivity is not the apparent cause of a particular disease. It is however, the anxiety or fear, which one gets after getting a specific disease and mistaking it as a harmful experience.
Thus, the given statement is false.
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Question:
What is the oxidized form of the molecule found after glycolysis?
Possible answers:
A. ADP
B. Pyruvate
C. Ether
D. Lactose
E. Phosphate
F. Acetaldehyde
G. TCA
Answer:
What is the oxidized form of the molecule found after glycolysis Pyruvate
Explanation:
Pyruvate
Does anyone have gce o levels biology matters 2nd edition workbook answers?
no I don't have it as I am studying in 5th grade
temperature is the degree of_ or_ of a substance
Answer:
Temperature is the degree of hot or cold of a substance
Explanation:
Because temperature can be hot or cold
I hope it help you
Offline, create a complete pictogram that represents (1) the various sources of energy; (2) the percentage of global consumption for each as shown in the video; and (3) what each source is used for (electricity, transportation, heat). Use the illustration from the video as a guide.
Answer:
Solar energy, geothermal energy, wind energy, hydropower, nuclear and fossil fuels
Explanation:
Various sources of energy are solar energy, geothermal energy, wind energy, hydropower, nuclear and fossil fuels. The various sources of energy consumption for the generation of electricity was 41% produce from coal, 22% natural gas, 11% nuclear, 16% hydro, 6% from other sources such as solar, wind, geothermal, biomass, etc and 4% from oil.
when tropical cyclone has wind not more than 60 kilometers per hour(kph)is called a.typhoon b.tropical Strom c.super typhoon d.tropical depression
Answer This question or you will die in 5 second
Answer:
D. Tropical Depression
How was osmosis involved in the cause of Clark's seizures?
Answer:
after Clark was treated with a hypertonic solution? increased Na concentration in matrix of brain caused water from blood to move in to the brain which increased the matrix pressure. Pressure caused the neuron firing rate to increase which increased the likelihood of seizures.
It's forensic science
Answer: Loops: 65%, whorls: 30%, and arches: 5%
Explanation:
The loops are 65% in the population, 30% are whorls and arches are 5%. The fingerprints are the patterns which include the friction ridge characteristics also called minutiae characteristics. These can be found in the soles of feet and palms of hand. At the distal end of finger the typical friction ridge pattern forms patterns like loops, whorls, arches, and composites which are patterns including two or more patterns. The loops are most common in the population the ridges emerge and end on the same side in this pattern. The loops are radial or ulnar loops depending upon the side in which pattern ends of the side of the bone thumb in case of radial and little finger in case of ulnar loop.
What do you consider to be your culture? How do you feel about it?
Answer:
My culture is my Jewish culture.
Explanation:
I feel great about it.
Which best summarizes the composition of the surface of Earth? NEED HELP PLEASE THIS IS DUE TODAY!!!!
A.
Three-fourths of Earth’s surface is land.
B.
One-fourth of Earth’s surface is water.
C.
Earth’s surface contains more land than water.
D.
Earth’s surface contains more water than land.
Answer:
D
Explanation:
Because earths surface is 29% land, and 71% water
Which of the following are examples of a physical property of matter?
Iron (Fe) combines with Oxygen (O) to form rust.
the apple is red in color.
Copper (Cu) conducts electricity.
An apple oxidizes (turns brown) once it is cut and exposed to Oxygen (O).
Nickel (Ni) is magnetic.
Magnesium (Mg) combusts when exposed to Oxygen (O).
Water boils at 100ºC.
Answer:
the apple is red
copper conducts electricity
nickel is magnetic
water boils at 100
Explanation: the rest are chemical properties
Four differences between viruses and bacteria
Answer:
bacteria :
1. need microscope to see them.
2. need warmth moisture nutrients.
3. saprophyte or parasite.
4. can be harmful or useful.
viruses:
1. smaller than bacteria.
2. spend on living host.
3. always parasite.
4. where is harmful.
What are the inputs and outputs of cellular respiration and photosynthesis?
carbon
dioxide
oxygen
energy
Mater
sugar
Photosynthesis
Cellular Respiration
Inputs
Outputs
Answer: inputs of cellular respiration? Glucose, oxygen
outputs of cellular respiration? Carbon dioxide, water, energy (ATP)
In photosynthesis, water, carbon dioxide, and energy in the form of sunlight are inputs, and the outputs are glucose and oxygen.
Explanation:
HELP! I NEED THE ANSWER TO THIS QUESTION AS FAST AS POSSIBLE.
Which of the following is a source of genetic variation in sexually-reproducing organisms?
A.
meiosis
B.
mitosis
C.
translation
D.
all of these
Mendel's law of segregation is describing or explaining which process?
a mitosis
b. binary fission
c. meiosis
d. asexual reproduction
Answer:
meiosis
Explanation:
because Mendel's law of segregation states that: “During the formation of gamete, each gene separates from each other so that each gamete carries only one allele for each gene.” Same applies to meiosis the chromosomes separate.