Answer:
Force = mass x acceleration
So Acceleration = Force / mass
Given,
Force= 200 N
Mass = 15kg
SO, Acceleration= 200/15 m/s
=13.33 m/s
You place a cell in a solution that contains 12 more water molecules than the inside of the cell. How will you know when the cell reaches equilibrium?
A. when there are equal numbers of water molecules on both sides
B. when the water molecules stop moving across the cell membrane
C. both A and B
D. The cell will not reach equilibrium because water cannot pass through the cell membrane.
Answer:
B
Explanation:
the water molecules will stop moving across the
cell membrane because the cell membrane has
the same amount of water as in the solution.
This process is called osmosis.
Linda, a farmer, is cultivating corn and rice on her land. She also raises sheep and cows for their meat. Which type of farming Linda is practicing?
A.
mixed farming
B.
livestock ranching
C.
intensive subsistence farming
D.
nomadic herding
Answer: Mixed Farming
Explanation:
With Linda working with Rice and Corn, while still involving her cattle and livestock, this makes it a Mixed Farming situation with how she integrates the other options.
An mRNA sequence reads: GAA/GCU/AUA/CUA/UGU. What would the effect on the amino acid be if the second codon read GCA instead, and the third codon read AAU ?
A) Silent mutation on both, no changes whatsoever.
B) Silent mutation on second codon, third amino acid changed from PHE to STOP
C) Silent mutation on AAU only. Third amino acid is now HIS
D) Silent mutation on second codon, third amino acid changed from ILE to ASN.
Answer:
D) Silent mutation on second codon, third amino acid changed from ILE to ASN.
Explanation:
Silent mutations are usually point mutation where you change one nucleotide. Since, the nucleotide changed is the third position, it does not affect the protein being manufactured (it will still put the amino acid Ala) [look up the codon redundancy on youtub.e to understand how awesome nature is!]
On the other hand, the other mutation introduced is Missense mutation where a different Amino acid is added due to change in codon (goes from ILE to ASN).
Draw a Conclusion
Choose an answer.
Question: What types of
environmental changes does a
rabbit need to adjust to with the
change of the seasons every year?
Changes in temperature
Changes in food supply
Changes in habitat
All of the above
Answer:
D) all of the above
Explanation:
True/False: Mark the following statements as true (T) or false (F). If the statement is false, correct it to make it a true statement. _____ The periosteum contains osteoblasts and osteocytes. _____ Osteoclasts secrete bone matrix. _____ Compact bone is the hard, outer bone. _____ Compact bone is composed of spicules called trabeculae. _____ Spongy bone houses red and yellow bone marrow. _____ Circumferential lamellae are located between osteons.
Answer:
Explanation:
1. False and should read as - The periosteum contains osteocytes and osteoclasts.
2. True - Osteoclasts secrete bone matrix.
3. True - Compact bone is the hard, outer bone.
4. False and should read as - Spongy bone is composed of spicules called osteons.
5. True - Spongy bone houses red and yellow bone marrow.
6. False and should read as - Perforating fibers anchor the endosteum to the superficial surface of a bone
What is the monomer of DNA?
A. amino acid
B. monosaccharide
C. nucleotide
D. fatty acid
Answer:
The nucleotide is the monomer of DNA
Explanation:
This is because they are made up of (deoxyribose) and a phosphate residue. The four bases are adenine (A), cytosine (C), guanine (G) and thymine (T). Which are all components of DNA
Answer:
C. nucleotide
Explanation:
The monomers of DNA are known as the nucleotides.
When an enzyme becomes denatured, what often happens to the rate of reaction?
A. Rate of reaction increases
B. Rate of reaction stays the same
C. Rate of reaction decreases
Answer:
C
Explanation:
After a certain temperature, the reaction rate decreases because the heat starts to denature the enzyme so that it no longer can function.
Answer:
C. Rate of reaction decreases
Explanation:
As an enzyme becomes denatured, the rate of reaction decreases.
what factor is often responsible for the other three
1 increase in levels of toxins in freshwater
2 increased poverty and malnutrition
3 increase in human population
4 increased depletion of finite resources
Answer:
I think it's 4 hope it's correct
David was sitting in his hotel room reading a book, when he heard a knock at the door, and the sound of someone trying the door handle. He opened the door,
where he saw a man whom he had never seen before. The man said, "I'm terribly sorry... I thought this was my room. Wrong floor, I guess. He then walked
off down the hall toward the elevator. David went back into his room, thought about what had just happened, and then phoned the front desk, suggesting they
call the police, since the man at the door had obviously been a thief.
Why was David so sure the man had been a thief?
Answer:
if he thought that it was his own room, he wouldn't have knocked (because people don't knock on their own rooms)
Which of the following terms refers to the commercial production of decorative plants and flowers?
pomology
botany
floriculture
horticulture
Answer:floriculture
Explanation:
An example of something that can be used to support the theory of evolution. Explain.
3. In the mid 1970s, Sherwood Rowland and Mario Molina predicted a thinning of the stratospheric ozone layer over Antarctica. The thinning was confirmed in the late twentieth century and has continued into the twenty-first century. (a) Identify the class of chemical compounds that is primarily responsible for the thinning of the stratospheric ozone layer and describe TWO major uses for which these chemicals were manufactured. (b) Describe how the chemical compounds that you identified in part (a) destroy stratospheric ozone molecules. You may include chemical equations as part of your answer. (c) Identify the major environmental consequence of the depletion of stratospheric ozone and describe TWO effects on ecosystems and/or human health that can result. (d) Ozone formed at ground level is a harmful pollutant. Describe TWO effects that ground-level ozone can have on ecosystems and/or human health.
Answer:
Chlorofluorocarbon.
Explanation:
Chlorofluorocarbon is the chemical compound that is responsible for the thinning of ozone layer present in the stratosphere. This Chlorofluorocarbon is used in the refrigerators and aerosol sprays. The major environmental consequence of the depletion of stratospheric ozone is the melting of glaciers in the Antarctica. It also has adverse effect on humans because it is responsible for the skin cancer disease in humans. Breathing ground-level ozone can trigger a variety of health problems such as chest pain, coughing, throat irritation, and congestion.
The table describes the properties of four compounds.
Which compounds are most likely ionic?
Explanation:
where is table...add pic
Answer:
the answer was A and D
Explanation:
here is a pic
You are an aquatic biologist studying a small lake. The stream that drains into this lake runs by croplands. You are detecting a pesticide called atrazine in the insects and worms that live in the lake. The predatory birds such as herons and egrets have very high concentrations of atrazine in their blood. The birds prey on the frogs and small fish. What condition best explains the high atrazine level in the birds?
The condition best explains the high atrazine level in the birds is biological magnification. The correct option is D.
What is biological magnification?Biological magnification is the occurrence of any chemical in the body of a living organism than in outer space or the environment. The chemicals can be toxins or pesticides. They are present within the tolerant level in the tissue.
Here, the atrazine level is high in frogs and small fish than in the surrounding water, which is going in birds.
Thus, option D. biological magnification is correct.
The full question is attached in the image below:
Learn more about biological magnification, here:
https://brainly.com/question/14315613
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What are the three basic components of a nucleotide?
O Phosphate group, ribose and nitrogenous bases
O Adenine, thymine, and cytosine
O Oxygen, hydrogen and phosphate
O None of the above
Answer:
phosphate group ,ribose and nitrogenous bases
the four main types of macromolecules are organic. what does organic mean in this context.
A. it is made only of carbon
B. it is produced without the use of pesticides.
C. it is a very large molecule.
D. it is made from or produced by a living organism.
Is an adaptation on one organism necessarily useful on another? Explain with examples.
Answer:
Do you mean one organisms offspring or same species?
Question 16 of 36
Following a sports injury, while the team physician is testing the stability of the lower leg it
slides forward unnaturally. This injury can be explained by a tear to the
A. Medial collateral ligament
B. Posterior cruciate ligament
C. Anterior cruciate ligament
D. Medial meniscus
E. Lateral collateral ligament
North Carolina has more wind off its shore than any other Atlantic Coast state. How could this resource be best utilized to reduce carbon emissions and provide cleaner energy for the state?
Answer:
C. Offshore wind farms could be constructed to generate wind energy, which reduces fossil fuel use throughout the state.
Explanation:
Option C is the correct answer.
Actually, wind energy is another alternative to fossil fuel. If North Carolina has more wind off its shore, then it is best to utilize it to reduce carbon emissions. It will help produce cleaner energy for the state.
So, the best way it can be utilized to reduce carbon emission is by constructing offshore wind farms in order to generate wind energy. This wind energy will help to reduce fossil fuel emissions.
Answer:
C. Offshore wind farms could be constructed to generate wind energy, which reduces fossil fuel use throughout the state.
Explanation:
Wind power is an excellent option for North Carolina homes, farms, businesses, schools, and utilities interested in producing clean, independent electricity.
Which of the following is a job for a landscape architect?
planning a municipal park
conserving land on traditional farms
operating machinery on crops
cutting down trees on private land
Answer:
1 do i of
Explanation:
Answer:
Planning a municipal park
Explanation:
Landscape architects are dedicated to building squares, parks, places mainly for a public purpose.
Answer the following questions in your own words and in 3-5 complete sentences.
1. Where are the highest concentrations of the current population of Palmer amaranth?
2. Based on the climate model, how will the range change by 2050?
3. What do you think this change will mean for Palmer amaranth populations?
industrial preparation of oxygen from liquify air
Who were the scientists that came up with the shape of DNA?
Watson and Crick
Crook and Brown
O Gregory and Mendel
7
O None of the above
What is the difference between chromosomes
and chromatin?
A. the genetic information in it
B. the location in the cell
C. the structural form
D. the base pairs
what happens if plant protoplasts are placed in distilled water
Answer:
Protoplasts are plant cells that have had their cell walls removed. What happens if plant protoplasts are placed in distilled water? A They get larger and become turgid.When the plant protoplast is placed in distilled water ; It becomes Turgid
When protoplast is placed in a distilled water, the distilled water flows into the protoplast and this makes the protoplast to become turgid and this is due to absence of the plants cell wall and also the difference in the concentration of the contents of the protoplast and the distilled water. Protoplast represents the plant cell without the presence of the cell wall.
Hence we can conclude that when the plant protoplast is placed in distilled water it becomes Turgid.
Learn more : https://brainly.com/question/18740086
Compare and contrast genetic engineering to the process of natural selection. Select all statements that
are true.
tinn aonetic engineer
Answer:
Explanation:
Genetic engineering is faster than the process of natural selection.
Natural selection is natural process and it works over generations, while genetic engineering involves desired modification of traits.
Both genetic engineering and natural selection work on all organisms, including humans.
Answer pls i need help
The diameter of a metaphase chromosome is about 1400 nm, whereas that of the DNA double helix is 2 nm. This means that DNA is coiled into a structure with a diameter 700 times larger than itself. The diameter of a human hair is about 80 micrometers (0.003 inch). Of a human hair were coiled into a structure with a diameter 700 times larger than itself, the diameter of the coiled human hair would approximate that of a:
Answer:
The answer is "soda can (about 2 inches)".
Explanation:
In this question, when it is relative to the having the human hair with the d=80 mm (0.003 inches) and the collecting into the structure with the d=700 times larger than itself that will be produced with the coiled of human hair with the d that is = 80 [tex]\times[/tex]700 mm= 56,000 or 2.16 inches, that's why the answer is a soda can's which is equal to about 2 inches.
New molecules of DNA are synthesized by copying the genetic sequence of another molecule of DNA, which we call the template, so that __________. View Available Hint(s) New molecules of DNA are synthesized by copying the genetic sequence of another molecule of DNA, which we call the template, so that __________. the helical shape of DNA is conserved during cell division daughter cells are genetically identical to the mother cell there are two copies of each gene on a single DNA molecule DNA can serve as a template for the synthesis of other polymers such as proteins and carbohydrates
Answer:
during cell division daughter cells are genetically identical to the mother cell
Explanation:
DNA replication refers to the biological process by which two identical DNA molecules are produced from one original DNA molecule. DNA replication generates two identical DNA molecules known as sister chromatids which separate during mitosis. After this process, both daughter cells contain identical genetic information as the parent cell. Moreover, DNA replication is semiconservative because the two daughter DNA molecules that are synthesized have one parent (original) DNA strand and one newly synthesized complementary strand.
Can someone help me with this, please?
What are the eight major mineral groups?
Answer:
calcium, iron, magnesium, potassium, chloride, zinc, sodium, sulfur
Explanation:
Which of the following would a prokaryote have?
A. Cytoplasm
B. Nucleus
C. Mitochondria
D. Golgi apparatus