Which function does a phytoplankton have in ocean ecosystems?


A.
producer

B.
consumer

C.
scavenger

D.
decomposer

50% of the progeny will be green and the other 50% will be white when the cross takes place between the heterozygous green plant and the homozygous white plant.

A monohybrid cross takes place between two parents with a single trait. An example is the color of a pea plant. Green colour is dominant over white. The green is represented by G. White is represented by g. The homozygous dominant for green is represented by GG. The heterozygous green is represented by Gg. The homozygous white is represented by gg. 

When there is a cross between the heterozygous green and homozygous white plant , 50% of green progeny and 50% of white progeny will be formed. The heterozygous parent will form two gametes, such as G and g. The punnett square is explained in the image. 

Hence, from the cross of heterozygous green parents and homozygous recessive parents, 50% of green offspring and 50% of white offspring would be formed. 

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The answer is unregulated mitotic division.

This occurs due to the failure of tumor suppressor factors such as the p53 proteins. These tumor suppressors are involved in the checkpoints of cell cycles especially when they are damage to DNA. They are also involved in the apoptosis of such cells. The unchecked activation of cyclin-dependent kinases causes unregulated progression of mitosis.

Answer:

Nucleus

Explanation:

Answer:

There are 6 definitions that are recognized in the QSEN  project and each of them are very important for the proper care and protection of the patients.

In your question the correct answer is SAFETY.

Explanation:

In the SAFETY aspect of QSEN the nurse need to minimize or better said eliminate the potential hazards while caring for the patient. Here the nurse is affected by accountability because is his/her responsibility to make sure that nothing pose a threat to the patient. Many times the relatives are not aware of the danger that a medicine that has expired will have on his beloved one but a nurse should always be aware of such a thing and never let a patient take medicine that has expired.

Astronomer's best estimates of the number of galaxies in the observable universe are one hundred billion. Thus the correct option is C.

A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems, all held together by gravity.

The astronomers counted the galaxies in a designated region, and then they multiplied their number up to estimate the number of the whole universe.

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The closest estimate of the number of stars in a galaxy is C. several billion stars. This is based on the fact that dwarf galaxies contain several billion stars, whereas larger galaxies like the Milky Way contain even more.

To determine the correct answer, it is important to understand that galaxies can contain a wide range of stars. For instance, dwarf galaxies have around several billion stars, while larger galaxies like the Milky Way contain between 100 billion and 400 billion stars.

Given these figures, the closest estimate among the provided options is C. several billion stars.

Indeed good sir (or ma'am), you are correct.

I did the quiz and surprisingly got them right! Turns out I don't have a smooth brain!

Answer:

The correct answer is option C.

Explanation:

Global warming has diverse negative effect on several ways to the environment and organism and crops. One of the important shift is, a change in the migratory pattern of some of the birds. This change in the migrating pattern of the birds has a diverse effect on the population of the birds.

Birds are moving early or late to their feeding ground and also did not move far. Migrating too early could end in less food at their migrating site or moving to not far south also let them assume it is the destination and end in fewer insects or food.

Thus, the correct answer is option C.

The outer edge of a frog blood cell is referred to as cell membrane.

Cells are the fundamental building blocks of all life. Many of cells make up the human body. They support the body's structure, absorb nutrients from food, convert those nutrients into energy, and perform specialized functions.

A cell is made up of three parts: the cell membrane, the nucleus, and the cytoplasm, which lies between the two.

The cytoplasm contains intricate arrangements of fine fibers as well as hundreds or even thousands of tiny but distinct structures known as organelles.

All living things, from microorganisms to humans, rely on cells for structure and function. Scientists consider them to be the tiniest form of life.

Thus, cell membrane is the outer edge of a frog blood cell.

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Answer:

She should minimize her UV exposure and get regular skin checks.

Final answer:

Sponges have specialized but independent cells like pinacocytes, porocytes, amoebocytes, and choanocytes which allow them to filter-feed and regenerate. These cells are not organized into tissues but work in unison to support the sponge's structure and functions.

Explanation:

How Sponge Cells Are Alike

The cells in a sponge are functionally specialized and exhibit a high degree of independence compared to the cells of more complex animals. Sponges are among the simplest of metazoans, with key cell types including pinacocytes (forming the outer layer), porocytes (forming pores), amoebocytes (involved in digestion and distribution of nutrients), choanocytes (filter-feeding and moving water), and splenocytes (forming a skeleton).

Crucially, these cells are not organized into true tissues but still create a cohesive multicellular organism. Sponges are able to regenerate if broken apart and passed through a sieve, with the different cell types reassociating to reform the sponge structure. This is in contrast to more complex organisms, where individual cell types cannot survive alone.

The choanocytes play a particularly critical role, as they bear resemblance to choanoflagellate protists and are essential for the sponge's filter-feeding mechanism. They possess flagella that draw water through the sponge, facilitating the extraction of nutrients and removal of waste through the osculum.

Answer:

Natural selection

Explanation:

What happened in the case of bed bugs and pesticides is natural selection at play. According to the natural selection theory propounded by Darwin, the environment selects for genes that able to withstand changes and organisms with such genes are able to survive, mate and pass on the selected gene to their offspring. Organisms without the selected gene gradually fades off from the population since they are not able to withstand the changes to the environment. Hence, after some considerable time, the desirable trait becomes dominant in the population.  

When DDT was in use, it was effective against bed bugs mutation in the genome of a few of the bed bug population conferred resistance against DDT on them. The environment selects this resistance trait because it is desirable. The resistant strains therefore, survive, mate and pass the gene to their offspring. After a while, bed bugs without the DDT-resistant gene die off the population while those with the resistant gene take over.

This might eventually happen to Pyrethrums too in the nearest future if natural selection law is to be considered.

Archaea and Eubacteria, kingdoms in the domains Archaea and Bacteria, are composed of prokaryotic organisms that lack a membrane-bound nucleus and are adapted to a wide range of environments, including extreme ones.

Archaea and Eubacteria are kingdoms composed of organisms that do not have a membrane-bound nucleus. These single-celled organisms are from the domains Archaea and Bacteria, which are classified as prokaryotes due to the absence of a nucleus. Both domains are known for their diverse habitats and functions, inhabiting environments ranging from moderate to extreme. Archaea, for instance, can often be found living in conditions such as hot springs, salt flats, and other challenging environments, showcasing their remarkable adaptability.

While prokaryotes lack a nucleus, they do possess a singular piece of circular DNA located in the nucleoid region of the cell, as well as ribosomes for protein synthesis. The cell walls of these organisms are also characteristic, with bacteria having a cell wall containing the polysaccharide peptidoglycan, contrasting with the varied composition found in archaeal cell walls.

These differences underscore the distinct evolutionary pathways of Archaea and Bacteria, with the former presenting uniqueness in genetics, metabolic pathways, and cell membrane structure when compared to their bacterial counterparts.

Final answer:

Temperature increases can lead to metamorphism either through the Earth's geothermal gradient as rocks are buried deeper, or by contact with magma which causes contact metamorphism. The range of temperatures for metamorphism is roughly 200°C to 700°C-1,100°C, during which rocks undergo recrystallization or formation of new minerals without melting.

Explanation:

How Temperature Increases Cause Metamorphism

Metamorphism occurs when pre-existing rocks are subjected to conditions that differ from those under which they formed. One of the most common causes of metamorphism is temperature increases. This could happen in several contexts:

Geothermal Gradient: There is a natural increase in temperature with depth in the Earth, known as the geothermal gradient. As rocks are buried deeper, they experience higher temperatures that can lead to metamorphic transformations.

Magma Chambers: Heat from nearby magma can also cause metamorphic changes in rock. This process is known as contact metamorphism, where the temperature increase from the intrusion of magma changes the mineralogy and texture of the surrounding rock.

Metamorphic rocks can form under a range of temperature conditions, typically between about 200°C and 700°C-1,100°C. Temperatures above this range may result in the rock melting to form magma, which is no longer classified as metamorphism.

Furthermore, metamorphic rocks are often found in areas where there has been significant tectonic activity, such as mountain belts, because these areas are subject to elevated pressures and temperatures. The changes in rocks due to temperature increases involve recrystallization or the formation of new minerals without the rock reaching the melting point.

A mutation in the RAS gene can cause cells to divide uncontrollably, which is a key feature of cancer. However, not all RAS gene mutations lead to cancer as other factors also play a role. A sketch could demonstrate a normal cell with a functioning RAS protein and a mutant cell with an overactive RAS protein causing uncontrolled cell division.

In a normal cell, a gene called RAS helps regulate cell division. Mutations in the RAS gene could lead to constant activation of this gene, causing cells to divide uncontrollably, which is a key feature of cancer. A sketch illustrating this may have a cell with a well-labelled RAS protein in a normal cell comparing this to a 'mutant' cell with an overactive RAS protein causing increased cell division.

It's important to note that not all mutations in the RAS gene lead to cancer. Other factors, such as cell environment and affected tissue type, also play a critical role in whether a RAS mutation will indeed lead to the development of cancer.

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Answer: climate

Explanation:

Climate can be define as the average state of the long term atmospheric condition. It can be describe as the stable weather condition which did not changed over a period of 30 years. It measured by determining the change in the patterns of the variations of temperature, atmospheric pressure, precipitation, humidity and other meteorological variables of a region for a long period of time.

The template strands must separate so that both can be copied.

Hence, B option is correct.

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