What do plant-like protists contain that make them similar to plants?
a) DNA
b) ribosomes
c) amino acids
d) chlorophyll

Answer:

Look below plz :))

Explanation:

1.) In a chemical change, the molecules in the reactants interact to form new substances. In a physical change, like a state change or dissolving, no new substance is formed. Explain that another way to say that no atoms are created or destroyed in a chemical reaction is to say, “Mass is conserved.”

2.) Carbon Dioxide and Water Out: During combustion, the atoms in ethanol and oxygen are rearranged into carbon dioxide and water. The carbon dioxide and water leave the top of the flame.

Diffusion, passive and active transport molecules move from one location to another.

Molecules move to the location and move away from  the location of the chemical change with the help of different types of transport such as diffusion, passive and active transport. In these types of transport some requires energy for moving the substances or materials whereas some moves without the expenditure of energy.

In plant body, the carbondioxide gas enter the plant body through the process of diffusion and water moves with the help of passive transport from roots so we can say that diffusion, passive and active transport molecules move from one location to another.

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Answer:

0.28

Explanation:

This allele has incomplete dominance and analysis indicated a phenotypic distribution of 600M, 4000MN, 400N.

Using p+q = 1

Where q is the frequency of the N allele-

400N/5000 = 0.08 is the genotypic frequency out of 5000 in total - q²

Thus the frequency of the allele N is √q² = √0.08 = 0.28

The frequency of the N allele is 0.48

Incomplete dominance occur when a progeny of a particular parents gives or have a phenotype that combines both parents gene.

This phenotype is intermediate of the two parents and often unique.

Total population of Thailand= 5000

Allele P= 600M

Allele pq= 4000MN

Allele Q= 400N

According to hardyweingberg principles,

P+Q= 1

p2+2pq+q2=1

Therefore, to calculate frequency of allele N in the population we have;

N for Q= 400/5000=0.08

N for pq= 4000/5000=0.8

since pq contain both allele q and p in equal proportion we have

N for pq= 0.5*0.8 = 0.4

Frequency of N in allele N and MN is

0.08+ 0.4 = 0.48.

Therefore, the frequency of the N allele is 0.48

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Quadriceps, hamstrings, and glutes muscle groups are used during riding, squats, push ups, planks, mountain climbers, trunk rotation, overhead press, lunges, arm extension.

Your hamstring muscles are essential for walking, running, bending your knees, and extending your legs. However, these muscles are also quite prone to damage, particularly if you play football or soccer or engage in other activities that include many pauses and starts.

Hamstring weakness can exacerbate knee pain and raise the risk of hamstring strain. Many people say they frequently stretch their hamstrings yet they never seem to get more flexible.

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Answer:

Carrying the genetic information that determines where a fungal spore can survive

Explanation:

Proteins are one of the four major biological molecule in living systems. They are very vital to the survival of any orgamisn as they perform series of functions in the body ranging from transport to being enzymes or hormones. According to this question, Isabel observed that particles she is studying relied on proteins to function.

These function that can be performed by proteins are:

- Transport proteins which assist molecules across a bacteria's cell membrane.

- Capsid, a protein structure around a virus particle's DNA.

- As Enzymes that speed up a reaction that breaks down glucose in a single-celled parasite.

However, the function of carrying the genetic information that determines where a fungal spore can survive is carried out by NUCLEIC ACID biomolecules.

Answer:

Option C

Explanation:

I think it is C distance changed

The distance from the earth to moon changed is most likely caused the difference in the apparent size of the Moon in photographs A and B.

One of the solar system's most recognizable objects is the Moon. Due of its closeness to Earth, it has enormous cultural value and is crucial to the regulation of the planet's tides.

The Moon has essentially little atmosphere, thus it cannot retain heat or act as a surface insulator.

The Moon's surface reaches 127°C in full sunlight, which is far over the boiling point of water. High temperatures last for 13 and a half days, followed by 13 and a half days of darkness.

Therefore, The distance from the earth to moon changed is most likely caused the difference in the apparent size of the Moon in photographs A and B.

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Answer:

extract of beet roots could be used as antifreeze for water systems

Explanation:

In science, a prediction can be defined as a plausible conjecture that is subsequently proved (or rejected) using the scientific method. In other words, a prediction is the expected result obtained if the hypothesis is true. Scientists make predictions based on falsifiable hypotheses which can be tested through experimental and/or observational procedures. In this case, it could be predicted that the extract of beet roots could be used as anti-freeze for water systems in cold climates.

The answer is false. A temperate phage does not always lyse its host cell. Unlike a virulent phage, which always causes lysis and destruction of its host cell, a temperate phage has two possible life cycle pathways: the lytic pathway and the lysogenic pathway.

In the lysogenic pathway, the temperate phage integrates its DNA into the host cell's genome, becoming a prophage and replicating along with the host DNA without causing immediate cell lysis.

This integration allows the prophage to be passively inherited by the host cell's progeny during cell division. The host cell remains viable and can continue to replicate normally, carrying the phage DNA.

Under certain conditions, such as exposure to stressors or changes in the environment, the prophage can undergo induction, switching from the lysogenic to the lytic pathway.

During induction, the prophage excises itself from the host genome and enters the lytic cycle, leading to the production of new phage particles and lysis of the host cell.

Therefore, a temperate phage has the ability to both integrate into the host genome and cause cell lysis, depending on the circumstances and environmental conditions.

Its life cycle is characterized by the potential for either lysogeny or lysis, allowing it to adapt to different situations and maximize its chances of survival and propagation.

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Statement A. a. RecBCD displaces Rec A from the strand invasion complex. is False.

Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to shape a double helix sporting genetic commands for the development, functioning, increase and duplicate of all recognized organisms and plenty of viruses. DNA and ribonucleic acid are nucleic acids.

Deoxyribonucleic acid (abbreviated DNA) is the molecule that contains genetic data for the improvement and functioning of an organism. DNA is made from connected strands that wind around each different to resemble a twisted ladder — a shape referred to as a double helix.

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The new planet has more mass than Earth but the same radius. The mass of the astronaut will be calculated by the use of Newton's gravitational equation. The weight of the astronaut depends completely on its mass and the gravitational acceleration of the planet.

Gravitational acceleration is directly proportional to the mass of the planet and indirectly proportional to the radius of the planet. Hence, when the gravitational acceleration increases the planet's mass will increase therefore the radius will decrease. The astronaut's mass will depend on these factors.

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The endangered species Act is considered one of rhe strongest environmental law because option D: it requires that all countries of the world acknowledge species listed as endangered.

The U.S. Fish and Wildlife Service and/or the NOAA Fisheries Service must be consulted by federal agencies to ensure that any actions they authorise, fund, or carry out are not likely to endanger the existence of any listed species or cause the destruction or adverse modification of any designated critical habitat of such species, according to the law. As a result, option D is the best one.

The law forbids any activity that results in the "taking" of any listed endangered fish or wildlife species. Similar restrictions apply to the import, export, interstate, and international trade of the species listed.

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Where there is a lack of prostatic fluid, all of the following chemicals are decreased in the semen except D, acid phosphatase.

This is due to the fact that prostatic fluid accounts for around 30% of semen volume and has an acid pH of 6.5 to 7. This is because acid phosphatase is generated by both the prostate gland and the epididymis and is secreted by the prostate gland in semen.Acids phosphatase has its optimum activity at pH 5.5, so it is a marker for prostate gland function.

It is essential in the diagnosis and evaluation of prostate cancer, as well as determining the stage and management of the illness. It is also utilized to distinguish between seminal and non-seminal stains in forensic medicine. In summary, the answer to the question is D, acid phosphatase, is not chemicals that decreased in the semen where there is a lack of prostatic fluid.

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Answer:

His work was not accepted at the time because during that time DNA had not yet been discovered.

The correct answer is d. A and C are CORRECT.

a. The DRI (Dietary Reference Intake) for calcium is indeed higher for adolescents and older adults compared to young and middle-aged adults. This is because adolescents are still growing and developing their skeletal system, while older adults may have increased calcium needs due to age-related changes in bone health.

c. A level of intake above the UL (Tolerable Upper Intake Level) of calcium is associated with a decreased risk of kidney stones. Adequate calcium intake can help prevent the formation of kidney stones, which are solid masses that form in the kidneys.

b. The statement "Osteoporosis is the only concern associated with marginal levels of intake of calcium" is incorrect. Marginal levels of calcium intake can lead to various health issues, including an increased risk of osteoporosis, impaired bone health, and other related conditions.

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The organelle that is important during cell division, that directs the formation of the mitotic spindle is centriole.

The centriole is responsible for the formation of spindle fibres during cell division. The centrosome is a cellular organelle that is the a microtubule organizing center in an animal cell which regulate the process of cell cycle.

The centrioles are composed of tubulin protein and they present at right handed angle to each other. It present only in eukaryotes which is located in the cytoplasm of the cell near nuclear membrane.

The centrioles plays a role of organizing microtubules. They help determine the location of the nucleus and other organelles within the cell.

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Genetically modified organisms (GMOs) are living organisms whose genetic material has been altered using modern biotechnology techniques. This involves the transfer of a desired trait or gene from one organism to another, or the modification of an organism's existing genes to achieve a desired trait or characteristic.

1- The 2013 bill proposed to Hawaii's city council was to ban the cultivation, propagation, development, and testing of genetically modified organisms (GMOs) on the island of Kauai.

The bill, known as Bill 2491, passed on November 16, 2013, but was later vetoed by the mayor. The evidence of the papaya shows that genetically modified papayas helped save the papaya industry in Hawaii.

2- The consensus amongst scientists is that GMOs are safe for human consumption and the environment. Scientific research spanning over three decades supports this claim.

3- The agricultural problem in Uganda is the low productivity of smallholder farmers, which affects their livelihoods and food security. It is significant because agriculture is the backbone of Uganda's economy, and over 70% of the population relies on it for their livelihoods.

4- Seralini's rat study concluded that rats fed with GMO corn developed tumors and died prematurely. However, the study was widely criticized for its poor experimental design and statistical analysis, leading to its retraction from the scientific journal it was published in.

5- Monsanto is an American agrochemical and agricultural biotechnology company that produces genetically modified seeds and herbicides. The company has a negative reputation due to its aggressive business practices, including patent infringement lawsuits against small farmers and the production of herbicides like Roundup, which have been linked to cancer.

6- Bt crops are genetically modified to produce Bacillus thuringiensis (Bt) toxin, which is harmful to certain pests but harmless to humans and animals. Roundup-ready crops are genetically modified to be resistant to the herbicide Roundup, which allows farmers to control weeds more effectively.

7- GMO crops have resulted in both an increase and decrease in the use of herbicides and pesticides, depending on the specific crop and farming practices.

8- Organic farming is a method of farming that relies on natural processes and avoids the use of synthetic fertilizers and pesticides. Benefits include reduced environmental impact, improved soil health, and potentially higher nutritional content. Challenges include lower yields and higher labor costs.

9- Some roadblocks to making GMO crops available to farmers include regulatory hurdles, public perception and acceptance, and intellectual property issues.

10-  I don't have feelings or opinions. However, any documentary may have a bias, and it's important to evaluate its claims critically and with a balanced perspective.

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the downward velocity of the gases of combustion is 320.53 m/s (since the velocity is negative, it means the gases are going downward.

The mass of the rocket before the fuel and oxygen are burned is 1000 kg. After the fuel and oxygen are burned, the total mass becomes 1000 - 25 = 975 kg.
To find the velocity of the gases of combustion, we can use the conservation of momentum principle, which states that the momentum before a system is equal to the momentum after the system.
The momentum before the fuel and oxygen are burned is 1000 kg * 305 m/s = 305000 kg m/s (since the rocket is rising, the velocity is positive).
After the fuel and oxygen are burned, the momentum of the rocket and the gases of combustion must be equal to the initial momentum. Let v be the velocity of the gases of combustion, then:
975 kg * (-v) + 25 kg * v = 305000 kg m/s
Simplifying:
-975v + 25v = 305000
-950v = 305000
v = -320.53 m/s
Therefore, the downward velocity of the gases of combustion is 320.53 m/s (since the velocity is negative, it means the gases are going downward).

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Answer:

Nicotine which stimulates nAChRs produces the release of neurotransmitters, predominantly dopamine but also norepinephrine, acetylcholine, serotonin, GABA, glutamate, and endorphins. These neurotransmitters cause the various responses and behaviors after nicotine intake.

Dopamine is a chemical released by neurons to send signals to other nerve cells.

In order for neurons to send messages throughout the body, they need to be able to communicate with one another to transmit signals. However, neurons are not simply connected to one another. At the end of each neuron is a tiny gap called a synapse and in order to communicate with the next cell, the signal needs to be able to connect with other cells to reach the brain.

Explanation:

Does THIS help???

Based on the evolution of life on Earth, you would expect that the types of living organisms that would appear first on another planet are simple, single-celled organisms or microorganisms.

Life on Earth began with simple, single-celled organisms such as bacteria and archaea. These organisms were the first to appear and evolve, gradually diversifying and giving rise to more complex forms of life over billions of years. Given that the conditions for life on other planets may be similar to those on Earth, it is likely that the initial stages of life on another planet would also involve the emergence of simple, single-celled organisms. These microorganisms are better suited to survive and adapt to harsh environments and can serve as the building blocks for the development of more complex organisms over time.

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The correct answer is They stay at higher speeds in the outskirts of galaxies.

Galactic rotation curves refer to the plot of the rotational velocity of stars or gas clouds within a galaxy as a function of their distance from the galactic center. According to the laws of Newtonian gravity, the rotational velocity of objects within a galaxy should decrease as the distance from the galactic center increases. This is because the gravitational force exerted by the visible matter (stars, gas, etc.) in the galaxy diminishes with distance.However, observations of galactic rotation curves have revealed a different pattern. Instead of the expected decrease in rotational velocity with increasing distance, the observed rotational velocities tend to remain relatively constant or even increase in the outskirts of galaxies. This implies that there is additional mass present in the outer regions of galaxies that cannot be accounted for by the visible matter alone.

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Answer:

Explanation:

A

The magic bullet theory was developed by Dr. Paul Ehrlich in the late 19th century.

The magic bullet theory, also known as the "side-chain theory" or the "chemotherapy principle," was developed by German physician and researcher Dr. Paul Ehrlich in the late 19th century. Ehrlich's theory proposed that specific chemicals, or "magic bullets," could be used to target and destroy diseased cells without harming healthy cells. This was a radical idea at the time, as the prevailing belief was that drugs would affect the entire body, both healthy and diseased cells.

Ehrlich's research led to the development of many important chemotherapy drugs, which are still used today to treat cancer and other diseases. The magic bullet theory has since become a cornerstone of modern medicine and has been expanded upon and modified over the years to better understand the mechanism of action of drugs and the ways in which they can be used to treat diseases.

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A lot of enzymes breaking down substrates does NOT slow down or stop an enzyme's rate of reaction.

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The statement that best describes fertilization and subsequent growth in a mouse is B. Fertilization results in a single diploid cell. Through mitosis, this cell grows into a mouse made up of many diploid cells.

Fertilization is the fusion of haploid gametes (sperm and egg) to form a diploid zygote. In the case of a mouse, fertilization results in the formation of a single diploid cell, the zygote. This diploid cell then undergoes mitosis, a process of cell division, to produce more diploid cells. These cells continue to divide and differentiate, leading to the growth and development of the mouse. Throughout the growth process, the cells remain diploid, meaning they contain two sets of chromosomes. Therefore, option B accurately describes the process of fertilization and subsequent growth in a mouse.

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By interacting with a protein in the 305 subunit of the ribosome, the antibiotic streptomycin prevents the development of bacteria. This suggests that streptomycin prevents translation in prokaryotes. Option 3 is Correct.

Streptomycin was binds to the 30S component of the bacterial ribosome, just as other antimicrobial agents [1], causing early mistranslation before completely inhibiting translation over time. Numerous non-aminoglycoside antibiotics, such chloramphenicol, also completely stop translation from occurring.

A aminoglycoside is streptomycin. It functions by preventing the production of proteins by 30S ribosomal subunits, which causes bacterial death. The ribosome chooses aminoacyl-tRNAs for creating proteins that have anticodons that match the mRNA codon found in the small ribosomal subunit's A-site. By attaching near to the location, the aminoglycoside antibiotic streptomycin prevents decoding. Option 3 is Correct.

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Correct Question:

The antibiotic streptomycin inhibits bacterial growth by binding to a protein in the 305 subunit of the ribosome. Based on this information, streptomycin inhibits...

1. DNA synthesis

2. transcription in prokaryotes

3. translation in prokaryotes

4. translation in eukaryotes

Answer:

A: Nucleus

B: Cytoplasm

C: Vacuoles

D: Cell Membrane

E: Mitochondria

Explanation:

Answer:

A. 10%

Explanation:

Based on the data, you cannot distinguish whether the bacterial strain has a single stranded DNA genome, OR if it has been infected by a single-stranded DNA bacteriophage.

Nucleotide frequencies are the proportions of each nucleotide in a DNA molecule, which are calculated by dividing the total number of each nucleotide by the total number of all nucleotides. In general, the type of phage depends on the nature of the host bacterium and the type of nucleic acid (DNA or RNA) that forms the phage's genome. The nucleotide frequencies for the sequenced bacterial genome are as follows: A: 20%, T: 30%, G: 22%, C: 28%.

The bacterial strain cannot be distinguished as having a single-stranded DNA genome, or if it has been infected by a single-stranded DNA bacteriophage based on the nucleotide frequency data given above.

None of the options is correct.

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Our solar system is located about two-thirds of the way from the center of the Milky Way galaxy to the outskirts of the galactic disk.

Where is our Solar system located?

Our solar system, which includes planets, comets, and other celestial bodies, is located approximately two-thirds of the way from the center of the galaxy to the outskirts of the galactic disk. So, the correct answer is (c) about two-thirds of the way from the center of the galaxy to the outskirts of the galactic disk. It is a part of the galactic disk, which contains many stars, planets, and comets. However, it is not located at the center of the galaxy or near the far outskirts of the galactic disk, and it is not in the halo of the galaxy above the galactic disk.

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Answer:

Water's adhesion to other types of molecules

Explanation: