10 points PLUS BRAINLIEST answer

1. Which of the following best explains the relationship between science and ethics?
A. There is no relationship between science and ethics
B. Every scientific question raises serious ethical concerns
C. Scientists should try and avoid ethical questions because they limit research
D. Science provides facts and ethics determines how to best use the information

2. The first European to cross the Atlantic ocean were?
A. Greeks
B. Italians
C. Vikings
D. Spanish
3. Which of the following best describe captain James cooks contribution to marine science?
A. Proving that humans were harming the ocean
B. Documenting the islands in the Atlantic for the first time
C. Creating records of marine life as he explored new regions
D. Requiring all ships in the navy to have a marine scientist on board

If you cut a flatworm in half, both halves can grow into a new individual by fission.

If you cut a flatworm in half, both halves can grow into a new individual by FISSION.

Answer:

convenience in using the numbers.

Explanation:

Very small numbers have too many digits, similar to large numbers.

This numbers can take too much space and therefore cause inconvenience during recording or calculation.

To avoid this inconvenience, scientists use scientific notations in representation of this numbers.

Some examples of the notations are:

Answer:

Explanation:

Scientists use scientific notation to represent very small or very large numbers because this notation increases the  

accuracy of measured quantities.

convenience in using the numbers.

number of significant figures.

precision of measurements.

if sodium entering and exitting the cell is observed, then it is clear that the cytoplasmic membrane is being looked at under the microscope.

Answer:

C. Plasma membrane

Explanation:

Plasma membrane is bilayer of phospholipids in which proteins are embedded. It serves as selectively permeable membrane and regulate the entry and exit of various molecules in and out of the cell. Hence, the observer is looking at the plasma membrane of the prokaryotic cell through which transport of sodium ion is occurring.

Option “C” is correct: Nephrons

Answer: it is nephrons on edg

Explanation: I know

Answer:

The answer would be A.

Explanation:

I. In a process called transpiration, some liquid water in leaves changes to water vapor. The water vapor is released into the air through tiny pores in the leaves. This allows more liquid water from the soil to be pulled up the roots and stem to replace water lost from the leaves.   So A would the correct answer.  I also got it right in my quiz

During photosynthesis, within the plant cell, the water is oxidized as it loses electrons. This transforms the water into oxygen.

During transpiration in plants, the water eventually released to the atmosphere as vapor via the stomata present in leaves.

It is the process of water loss in plants through evaporation from the stomata of plants.

During transpiration, the water near the surface of the leaves changes into vapor and evaporates when stomata are open.

Transpiration provide the water needed to plants for photosynthesis.

During photosynthesis below reaction takes place, where carbon dioxide and water under the sunlight converted into glucose and oxygen.

6 CO₂ + 6 H₂O → C₆H₁₂O₆ + 6 O₂

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I feel like it would be b

In addition to being a component of the integumentary system, the skin contributes to excretion through the production of sweat by sweat glands in the dermis, hence option B is correct.

The excretory and urinary systems are not the same because the excretory system is a collective term for all systems performing the function of removing waste from the body, such as excess water, urea, carbon dioxide, and lactic acid.

Whereas the urinary system focuses on removing excess water and urea from the body. Nevertheless, other organs also play a part in excretion.

Water and carbon dioxide are two waste products that are expelled by the lungs as part of the respiratory system. Another excretory organ that eliminates waste from the body through sweat glands is the skin.

Therefore, the integumentary system, respiratory system, and urinary system are three organ systems that combine to form the excretory system.

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Answer:

The chain moves from the 5' - 3' direction caused by the use of GTP and several protein-enzyme complexes. As the polypeptide chain is produced the t-RNA move from site A to site P, and then are released into the cytoplasm. The polypeptide chain continues to grow, and is held to the ribosome by the t-RNA at the P site.

Explanation:

The ribosome moves down one codon during the translation process in protein synthesis through translocation, which is powered by GTP hydrolysis and the action of EF-G. This step is crucial for the ribosome to read mRNA and synthesize proteins accordingly.

What stimulates the ribosome to move down one codon is a process called translocation, which is an essential part of the translation phase of protein synthesis. During translocation, the ribosome moves along the mRNA molecule towards the 3' end by a distance of one codon (three nucleotide bases). This movement is facilitated by the hydrolysis of Guanosine triphosphate (GTP) and requires the action of elongation factor-G (EF-G), also known as translocase. As a result of this, the tRNA that was in the A site moves to the P site, carrying the growing polypeptide chain, and the deacylated tRNA in the P site moves to the E site and is then released into the cytosol.

At the end of the translation process, when a stop codon is reached, release factors will bind, causing the polypeptide to be released and the ribosomal subunits to disassociate. The ribosome can then be reassembled for another round of protein synthesis.

Answer:

C. Semiconservative replication

Explanation:

Semiconservative replication is a mechanism of replication. Semiconservative model of replication states that in daughter cell, with new double-stranded DNA (cell after replication and mitosis) one strand is from the original template molecule while other is newly synthesized.

This is possible thanks to complementary pairing in DNA (each original strand of double-helix DNA is used as a template for the synthesis of the new strand).

The scenario presented in the question supports the Conservative replication model of DNA replication. In this model, the original DNA strand remains intact, and a completely new strand is synthesized. However, in the actual Meselson-Stahl experiment, they observed support for Semiconservative replication.

The observation described in the question would support the Conservative replication model of DNA replication. According to the Conservative replication model, the parental DNA strand remains intact, and an entirely new strand is synthesized. Thus, after one round of replication, you would observe one band of DNA at the 15N position (the original, 'heavy' parental molecule) and a separate band at the 14N position (the completely new molecule).

The Meselson-Stahl experiment is a classic in molecular biology, used to elucidate the mechanism by which DNA duplicates itself. The result described isn't what they observed, though, rather they saw a single band intermediate between 15N and 14N after the first replication, supporting the idea of Semiconservative replication: each new DNA molecule consists of one old strand and one new strand.

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Answer:

E) Elephants help other populations survive by repelling many large African predators

Explanation:

Elephants are large mammals. Elephants in Africa have a height of 4 meters and weigh up to 7 tons.

The role of elephants in the ecosystem is very important especially its impact both directly and indirectly on the environment. With a large size and height, other predatory animals such as lions, tigers, coyotes, hyenas do not want to get close to elephants. Elephants are animals that prefer to group. While still breastfeeding will be very protected by the mother for up to 3 years. Elephants have an average age of up to 70 years. Perhaps very few elephants have fallen prey to predators. Thus elephants are animals that indirectly protect other animals in Africa. Things like this also indirectly make grasslands become more fertile and other animal species also become more numerous.

So the most appropriate answer is E. E) Elephants help other populations survive by repelling many large African predators

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Class : Senior High

Subject : Biology

Keywords

- Elephants

- Ecosystem

Elephants are not the most dominant species in African grasslands, yet they influence community structure. The grasslands contain scattered woody plants, but they are kept in check by the uprooting activities of the elephants. Take away the elephants, and the grasslands convert to forests or to shrublands. The newly growing forests support fewer species than the previous grasslands. Which of the following describes why elephants are the keystone species in this scenario?

A) Essentially all of the other species depend on the presence of the elephants to maintain the community.

Shrubland is a plant community characterized by vegetation dominated by shrubs. According to this scenario, elephants are the keystone species because they have great affect on their ecosystem, and without them, the ecosystem would change or suffer

Which of the following describes why elephants are the keystone species in this scenario?

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Answer:

Tertiary Treatment stage

Explanation:

There are basically four stages of treatment of sewer/waste water

a)  Screening stage – In this stage of treatment, large objects and garbage is removed from the waste water through the use of grit removal equipment

b) Primary treatment stage (Physical treatment)

Physical processes such as aeration, filtration, sedimentation etc.  are used to remove the impurities from waste water after the screening stage

c) Secondary treatment stage (Chemical Treatment)

In this stage chemicals are used to coagulate tiny impurities into larger mass so that they can be easily removed through the process of sedimentation, filtration etc.  

d) Tertiary treatment stage (Biological Treatment)

In this stage, waste is acted upon by microorganisms that work either in the presence or absence of oxygen to remove organic impurities from the waste water.  

Thus, Derek saw the process of municipal wastewater treatment plant at the tertiary stage of waste water/sewer treatment.

Answer:

secondary treatment

Explanation:

I just did the test

Answer:

film sensitive to radiation that is removed and developed to measure exposure.

a device used for monitoring individual cumulative exposure to ionizing radiation.

Explanation:

Film badges are monitoring devices that contain photographic film which measures and record the wearer’s exposure to different ionizing radiation such as X-rays, gamma rays and beta particles. The photographic film within film badges is very sensitive, functions as a detector, and is enclosed in a vapor and light resistance cover which disallows chemical vapors, light or moisture to have an effect on the film. Film badges give a lasting radiation record and it can also differentiate between different energies of photons.

Answer:

Explanation:

just took it :)

Systems thinking focuses on the role of individual elements and their relationship with others in the system.

1. Systems thinking focuses on the ways in which systems interact with the environment.

2. An event that benefits one part while weakening another.

3. Human behavior causes a lot of issues with the ocean.

1. Systems thinking focuses on the ways in which systems interact with the environment. Therefore option C is correct.

Systems thinking is an approach that emphasizes understanding and analyzing systems as a whole, rather than focusing solely on the individual parts.

It recognizes that systems are composed of interconnected elements that interact with each other and their environment and that understanding these interactions is essential for understanding the behavior and dynamics of the system as a whole.

2. An event that benefits one part while weakening another. Therefore option C is correct.

Positive feedback in a system refers to an interaction or process that amplifies or reinforces a certain condition or behavior within the system. It is characterized by a chain reaction where the initial change leads to further changes that intensify the original condition.

Unlike negative feedback, which tends to stabilize or balance the system, positive feedback drives the system toward a specific direction or outcome.

3. Human behavior causes a lot of issues with the ocean. Therefore option B is correct.

Social science intersects with marine science because human behavior plays a significant role in influencing and impacting the oceans.

The study of marine science focuses on understanding the physical, chemical, biological, and ecological aspects of the ocean and its ecosystems.

However, human activities, such as pollution, overfishing, habitat destruction, and climate change, have profound effects on marine ecosystems.

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ANSWER; C                          carol and Jose's  plate  contains streptococcus bacteria that could be potential dangerous for humans.                                                                                                                              

The teacher cautioned the students not to open the cover of the culture plate to mitigate potential health risks considering the possibility of harmful microorganisms like bacteria, fungi, or virus present, which could spread and pose risk of infection.

The teacher warned the students not to open the cover of their culture plate due to potential health risks. When incubating samples collected from different surfaces, it's uncertain what types of microorganisms might be growing, including potentially dangerous bacteria, fungi, or virus. These can become airborne if the dish is opened, posing a risk of inhalation and infection. The exact reason isn't specified from the given options, but the general concern is clearly about preventing potential exposure to harmful agents.

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the answer is letter A

Answer:

Take in what they need and expel what they don't need. (Ans. A)

Explanation:

Endocytosis and exocytosis are two active transport processes which are helping macro molecules present in the cytoplasm to move inside or outside the cell across the plasma membrane. It is an energy requiring movement.

Endocytosis is known as a process which is capturing the particles from outside the cell by engulfing of them with the cell membrane. Endocytosis is mainly two types:

1) Phagocytosis, in this process cell is engulfing whole particle. It is also known as cell eating.

2) Pinocytosis, in this process cell is engulfing already dissolved food. It is also known as cell drinking.

Exocytosis, in this process where vesicles fusing with the plasma membrane which helping them to move substances out of the cell.

Answer: Old town Valdez, AK was originally built on unstable land. On March 27, 1964 (Good Friday), an 9.2 earthquake erupted 45 miles west of the town. The earthquake caused many landslides and loosened the already unstable soil under the city

Answer:

D) Of the four organisms, the calf and human are most closely related.

Explanation:

According to biogenetic law, stages of embryological development of an organism recapitulates its evolutionary history. The shared characters are exhibited by early embryological stages of various species while the derived features appear in later stages. Since the calf and the human embryo resemble during later stages of embryological development, they are most closely related to each other.

Answer:

The calf, human and tortoise are more closely related to one another than the fish.

Explanation:

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Answer:

reverse transcriptase

In recombinant DNA methods, a vector is a DNA molecule that functions as a vehicle to carry foreign genetic material into a host cell. Vectors can be plasmids, viruses or artificial chromosomes, and must have the ability to replicate within host cells and contain recognition sites for restriction enzymes and selectable markers.

In recombinant DNA methods, the term vector can refer to a DNA molecule used as a vehicle to artificially carry foreign genetic material into another cell, where it can be reproduced. Examples of vectors include plasmids, viruses, and artificial chromosomes such as yeast artificial chromosomes(YACs).

A vector must have three important characteristics: ability to replicate within host cells, recognition sites for restriction enzymes, and selectable markers which allow cells containing vectors to be selectively cultured.

It's the vector's ability to reproduce within the host cell that allows the foreign DNA to be replicated in the process. In other words, it's a medium through which we can produce multiple copies of a particular piece of DNA within a host organism. The DNA typically inserted into these vectors is often genes that a scientist wants to express (have the cell produce copies of them)

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it’s important for the spinal cord to intercept messages of pain because the spinal cord is responsible for an automatic movement in response to a stimulus that’s called reflex, and make responding to the stimulus faster.example: putting your hand on a hot stove, 1. the receptors in your hand detect stimuli (hot temperature). they send messages through nerves to your spinal cord 2. responding nerves signals travel directly from the spinal cord to muscles in your arm, and you pull your hand away 3. AFTER you respond to the stimuli, nerve signals travel from the spinal cord to the brain, and you feel pain.

Answer:

Option D. The available money is not a factor that impacts the stability of a society.

Explanation:

Social stability is a condition that all of societies aspire to, as the opposite condition known as social instability leads to conflicts between diverse internal groups within a community.  The stability of a society will be affected and, in some way relies, upon its population size, the availability of resources, and how the society manages its diverse practices. although money is a factor that can affect the stability of a society, it is not the available money that does so. There a plenty of societies that are not stable enough, that in theory have sufficient money available to be stable. Societies can print large amounts of money and still be unstable, as the value of money is affected by diverse factors.

I only answered some of them, the ones I knew for sure. Hope this helps

2. Oxygen.

3. Alveoli

4. Diaphragm

6. Trachea

8. Larynx

9. Heart

Answer:

Your answer would be (A). Hope this helps! <33

Answer:

The best answer choice for the question: What characteristics do non-perching birds have in common with tropical birds and owls, would be, A: Hooked beaks.

Explanation:

According to research done, this is probably one of the only commonalities between birds from tropical regions, like parrots, or cockatoos, and non-perching birds like the birds of prey, both diurnal and nocturnal, which are the  eagles, owls, hawks, and others. In all of them, what can be found in common is that they tend to have beaks that are shaped hooklike, and are very strong, giving them the capacity to catch strong prey and be efficient hunters.

Answer:

osteomalacia

Explanation:

Osteomalacia is the disease in which bones become abnormally soft, mainly due to a deficiency of calcium and phosphorus, usually related to a vitamin D deficiency, and can increase the risk of developing osteoporosis.

The disease in which the bones become abnormally soft due to a deficiency of calcium and phosphorus in the blood, necessary for bone mineralization, is known as osteomalacia. In adults, this condition is often caused by a vitamin D deficiency, leading to reduced bone mineral density and an increased risk of osteoporosis. While osteoporosis involves the bones becoming brittle, fragile, and thin, often resulting from a lack of calcium in the diet, osteomalacia specifically refers to the softening of the bones. Rickets is a similar condition that affects children and is also most commonly caused by a lack of vitamin D, but can also stem from deficiencies in phosphorous or calcium.

Answer:

If you study ecology then you are studying plants

Ecology is the study of life.

The steps of a G-protein signal transduction occur in the following order: a signal molecule binds to and activates the receptor, the receptor changes conformation and binds an inactive G Protein, the G Protein is activated by the dissociation of GDP and binding of GTP, the G protein dissociates from the receptor, and finally, the G protein activates an effector protein, leading to a cellular response.

G-protein signal transduction is an important biological process that occurs in response to a specific signal molecule. The steps of this process, in the order that they occur, are:

A signal molecule binds to the receptor, activating it (c).

The receptor changes conformation and binds an inactive G Protein (e).

The G Protein is activated by the dissociation of GDP and binding of GTP (d).

The G protein dissociates from the receptor (a).

The G protein activates an effector protein, leading to a cellular response (b).

Each of these steps are integral to the signaling process and ensure that the cell responds appropriately to external signals.

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Answer:

Copying the book would be analogous to transcription

Explanation:

The copies made from the copying process would be analogous to mRNA. Taking the copy to a workbench would be analogous to  the mRNA moving from the nucleolus to the ribosomes in the cytoplasm. The actual building of the dog house would be analogous to the ribosome assembling up the protein using amino acids. Following the instructions of the copy would be analogous to the ribosome reading the codons and bringing in the  respective amino acids.  

Only one kind of gamete(ab)

Answer:

B.) high purchase price

Explanation:

The hybrid cars are the newest models of cars that are much more environment friendly. They have been heavily promoted, and lot of people do want to have them instead of the traditional cars. The main reason why people are attracted to them is because these cars pollute little to nothing, so compared with the gasoline driven cars that pollute a lot, they are a much better choice for everyone that wants to contribute to the preservation of the environment. The big problem in all of this, and why these cars haven't been selling massively, is that they are much more expensive than the other cars. The majority of the people are just not able to afford them, so despite having a good thought about the environment, and wanting to help, they can not buy these cars.

Answer:

A. Costs a lot initially

Answer:

Toxycology

Explanation:

Toxycology includes:

Factors that determine the toxicity of a chemical for an organism are dosage, age, environment, species...

According to the cladogram for the six-kingdom system;

B) the Archaebacteria gave rise to the eukaryotes.

All of the six kingdoms have common ancestors. First divergence gave rise to the Eubacteria and Archaebacteria. The other major branching gave rise to the ancestors of the four eukaryotic kingdoms.

New six-kingdom classification of organisms was recently devised by scientist, and according to the cladogram for the six-kingdom system, the Archaebacteria gave rise to the eukaryotes, that are in option B among all other options.

The six-kingdom classification is a system of organizing and classifying living organisms into six distinct groups such as mentioned here :archaea, bacteria, protista, fungi, plantae and animalia and each of them have unique characteristics. Bacteria are also known as eubacteria that are single-celled microorganisms that are found in most of the place, and others such as protista are eukaryotes and unicellular etc.

Hence,  the correct answer here is that in six-kingdom classification, the archaebacteria gave rise to the eukaryotes that are in option B among all other options..

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B because in hydrolysis, water is used in order to break things apart. The only reaction here that has only water breaking things apart is B. (A has acid rain which has other chemicals, C has carbonic acid, D is with just oxygen)

Answer: B. Because of a reaction with water, feldspar is changed into clay minerals.

Explanation:

Hydrolysis is defied as the chemical breakdown of a substance when it is made to react with water. The word hydro means water, and the word 'lysis' mean to break down.

Water seeps down into the ground and comes in contact with the feldspar contained in the granite and convert it into clay particles which weaken the rock.

A. Because of a reaction with acid rain, sandstone develops black surface deposits is an example of carbonation.

C. Because of a reaction with carbonic acid, limestone is dissolved is also an example of carbonation.

D. Because of a reaction with oxygen, iron changes into rust is an example of oxidation.