If a single cell dies in a multicellular organism, what happens to the organism

Answer: Vaccine

Explanation:

The weakened or dead form of pathogens that evoke immune response in the body of an organism is known as vaccine. They are used to generate the immune response against pathogens.

It contains an agent that typically resembles the disease causing microorganism, it is often made weekend or used in killed form of the pathogen that generates the same immune response as like of real disease causing microorganism.

The defense mechanism of body is prepared prior to the original exposure to disease causing microorganism.

The weakened or dead form of pathogens that evoke immune response in the body of an organism is known as vaccine. They are used to generate the immune response against pathogens.

There are many types of vaccines, such as:

Thus, option "B" is correct,  vaccine they are used to generate the immune response against pathogens.

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Answer: They divide the atomic mass by two

Explanation: I'm too tired to explain Lol

Alkaline and zinc-carbon batteries can be safely disposed of in your domestic trash in the majority of areas. Ship used alkaline and zinc carbon batteries to battery recyclers. Thus, option D is correct.

When batteries are thrown away in California, they are regarded as hazardous waste. This includes single-use and rechargeable AAA, AA, C, D, button cell, 9-volt, and all other batteries.

Rechargeable batteries are dangerous for the environment and human health because they contain hazardous heavy metals like lead, nickel, cadmium, and mercury.

It is advisable to recycle or properly dispose of rechargeable batteries.

Therefore, take used batteries to a recycling plant, so they can be used for some other purpose, is the least acceptable.

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Answer:

Object A, by 0.5 cubic centimeter      

Explanation:

Density (d) is given by :

[tex]d=\dfrac{m}{V}[/tex]

m is the mass of an object

V is its volume

For object A:

[tex]V_1=\dfrac{m_1}{d_1}[/tex]

[tex]V_1=\dfrac{9\ g}{10\ g/cm^3}=0.9\ cm^3[/tex]...........(1)

For object B:

[tex]V_2=\dfrac{m_2}{d_2}[/tex]

[tex]V_2=\dfrac{4\ g}{10\ g/cm^3}=0.4\ cm^3[/tex]...........(2)

From equation (1) and (2) it is clear that volume of object A is greater by 0.5 cm³. So, the correct option is (b) "Object A, by 0.5 cubic centimeter".

Answer:

Government aims to modify the policy and design rules accordingly and also aims to incentive's any study in this area by technocrats . In this way  United Kingdom is planning to use driverless cars beginning in 2015

Explanation:

As per the government strategy, it is believed that UK will first start using its driver less technology in mainly two segments -

a) Luxury riding services

b) Commercial vehicle  such as haulage, cargo vehicles etc.

After this, the government has planned to introduce this for the consumer segment where an individual can own  own (semi-) autonomous vehicles

Government has also planned to introduce a change in policy and design norms for the betterment of society. It has also attempted to partner with technological companies by providing incentives for citing their research and inventions in this era.

Answer:

C on edge

Explanation:

the answer is B) The same number of dots would appear in the diagram for carbon.

Answer: The same number of dots would appear in the diagram for carbon.

Explanation:

Electron dot structure are structure in which dots are used to represent the number of valence electrons of an element in compound. These electrons dots are placed around the chemical symbol of that element.

In electron dot structure of silicon, there are four dots present around the symbol 'Si' because their are four valence electrons present in the valence shell of the silicon atom.

Also in electron dot structure of carbon, there are four dots present around the symbol 'C' because their are four valence electrons present in the valence shell of the carbon atom.

So, the number of dots  would appear in the diagram for carbon will be same.

Answer:

Explanation:

In general, ergonomics involves knowledge and technologies that allow a comfortable and productive adaptation between man and the place where he works. The idea is to “shape” working conditions for greater comfort, efficiency and safety.

Although there are countless ways to improve our ergonomics, we can name four very useful ways to do this. These forms are:

...parent to offspring

Answer:

C (Third one)

Explanation:

Answer:

Option C, image 3

Explanation:

Hydrogen bonds are weak electrostatic bond that exist between hydrogen and an electronegative atom.

In order to have hydrogen bonding, the hydrogen must be bonded to an electronegative atom.

Generally molecules having hydrogen bonded to electrogegative atom, N, O and F show hydrogen bonding.

Hydrogen bonds may exist within a molecule or between two separate molecules.

Difference in electronegativity of hydrogen and electronegative atom develops dipole which responsible for electrostatic attraction.

In image 1 and 2, hydrogen bonding is shown between two oxygen atoms, which is not correct.

In image 4, hydogen bonding is shown between two hydrogen atoms, which is also not correct.

Hence, the correct option is image 3

Competition could be considered a limiting factor within an ecosystem because as the populations grow, they will compete for shelter and available resources. Also, as populations become denser, the risk of disease increases.   The competition can be considered as a limiting factor within an ecosystem because there is a limited supply of resources that can be used and consumed.

Invertebrates are animals that do not have a backbone or vertebral column, while non-vertebrate chordates are animals that possess a notochord at some stage of their development, but lack a vertebral column.

Chordates are a group of animals that are characterized by the presence of a notochord, a dorsal nerve cord, pharyngeal slits, at some point in their life cycle.

The notochord is a flexible rod-like structure that provides support to the body and serves as an attachment point for muscles.

The main characteristics that distinguish invertebrates from non-vertebrate chordates are:

Backbone: Invertebrates lack a backbone, while non-vertebrate chordates possess a notochord.

Complexity: Invertebrates are generally simpler in body plan and organization than non-vertebrate chordates.

Size: Invertebrates can range in size from microscopic to very large, while non-vertebrate chordates are typically small.

Diversity: Invertebrates are a very diverse group of animals, comprising the vast majority of animal species on Earth, while non-vertebrate chordates are relatively rare and include only a few species.

Symmetry: Invertebrates can exhibit a wide range of body symmetry, while non-vertebrate chordates typically exhibit bilateral symmetry.

Thus, these are the characteristics that distinguish invertebrates from non vertebrates chordates.

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Answer:

The correct answer is hominids.

Explanation:

The group, which comprises modern humans and their direct ancestors are termed as Hominidae. It is also known as great apes or Hominids. Basically, the term Hominidae is considered for only the humans and their closest relatives. However, some of the people still continue to use this term in its limited sense, rather than in the modern sense.

Final answer:

During metaphase, the chromosomes are lined up along the equator of the cell at the metaphase plate, which is a plane midway between the poles of the cell. The correct answer is option C, "lined up along the equator of the cell."

Explanation:

During metaphase, the location of the chromosomes is crucial for proper cell division. The correct description of their location at this stage is that they are lined up along the equator of the cell. Practically, this means they align in a plane known as the metaphase plate, which is situated midway between the two poles of the cell. Each chromosome is connected via its centromere to the microtubules that make up the spindle fibers, originating from the centrioles at each pole.

In this phase, sister chromatids remain attached to one another and the chromosomes are highly condensed, becoming maximally visible under a microscope. Visual identification is possible by looking for chromosomes that appear in a straight line across the center of the cell, signifying that the cell is in metaphase and not another phase of cell division.

Answer:

Answer: the answer is A Explanation:

Answer:

This plant is probably an angiosperm and its pollination is through insects.

Explanation:

We can conclude that this plant is an angiosperm because it is a plant that produces seeds.

Angiosperms produce root, stem, leaf, flower, seed and fruit. Considering these structures, note that in relation to gymnosperms, angiosperms present two "novelties": flowers and fruits.

Flowers can be eye-catching in color and shape; They also often give off a pleasant odor and produce a sugary liquid - nectar - that feeds the bees and other insects that will be responsible for pollination. There are also flowers that do not have colorful pieces, are not fragrant and do not produce nectar.

Answer:

           Carbon atom is responsible for this huge diversity of organic molecules.

Explanation:

Diversity of Structures:

                                    The diversity of organic compounds originate due to following properties of Carbon atoms.

                  i) Catenation: It is the unique property of carbon atoms of self linkage. This property allows carbon atoms to form a long chains.

                   ii) Multiple Bonds: Also, the carbon atoms can form multiple bonds along with single bonds. Therefore, those organic comounds in which double or triple bonds are present are known as unsaturated compounds while, that containing single bonds are termed as saturated hydrocarbons.

                  iii) Isomerism: This is very important property of organic compounds in which more than one structure can appear for a same molecular formula. Hence, resulting in increasing the number of compounds for a single molecular formula.

Carbon is the element responsible for the diversity of organic compounds in living organisms.

The element responsible for the huge diversity of molecules in living organisms is carbon. Carbon is unique in its ability to form covalent bonds with other atoms, including itself, allowing for the formation of long chains and complex molecular structures.

Carbon's ability to form multiple bonds and its flexibility in bonding with different elements gives it the versatility to form a wide range of organic compounds with unique structures and properties.

For example, carbon can form single, double, or triple bonds with other carbon atoms, resulting in the formation of different types of hydrocarbons such as alkanes, alkenes, and alkynes.

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Answer: D). Most rocks are a mixture of minerals

Rocks are the natural substances these are the aggregate of one or more number of minerals. These minerals are responsible for chemical and physical nature of rocks. These are responsible for type of particles, texture of particles and overall rock structure. Example of rock having mineral aggregate is granite which is a combination of minerals like quartz, biotite and feldspar.

Rocks are a mixture of minerals (D).

Further Explanation:

Minerals are made up of large element, most elements are simple substances that can not breakdown into any other substance.  

Most common example of minerals are Na,Si,Cl etc.

For example, SiO4  mineral contains large amount of element  

Rocks are aggregates of minerals, rocks are major of three types:

Igneous rocks are created when lava cools down and solidify in rock.

The metamorphic rocks are made by the subjection of igneous rocks and sedimentary rocks under high pressure and temperature.

The sedimentary rocks are created by continuous deposition of minerals, earlier rocks, and animal.

Example of igneous rocks are granite and made up of a mixture of element example SiO2 and Al2O3.  

Examples of sedimentary rocks are breccias and siltstone and of metamorphic rocks are marbles.

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Answer Details:

Grade: High School  

Subject: Biology

Chapter:Ecology

Key Words:  

Soil, rock, mineral, mixture, granite, breccias, siltstone, sediments, metamorphic, igneous rocks, sedimentary rocks, silicon, deposition,earth sciences, substances, breakdown, pressure, temperature, element.

Answer:

A. Explains how organisms change in response to the environment.

Explanation:

A scientific theory is an EXPLANATION of an aspect in the natural world. In other words, it just tells why something happens. Now it is not just a guess, it is well-supported by evidence and previous studies.

Now to knock out your other choices:

B. is wrong because:

A scientific theory does not predict. It can serve as a basis for a prediction, or what you call a hypothesis, but it does not predict an outcome.

C. is wrong because:

As mentioned earlier, a theory is WELL-SUPPORTED by evidence and previous research.

D. is wrong because:

A theory does not become a scientific law.

A. Explains how organisms change in response to the environment.

The correct answer is the flow of water through the body of a sponge.  

The sponges are multi-cellular species in which the organ systems like the nervous system, digestive system, circulatory system, and others are absent. They possess a specific feeding system in which they maintain the continuous flow of water through their bodies. This water movement helps them to attain oxygen and food and remove waste.  

The movement of water all through the body of the sponge is unidirectional in nature, it gets inside the body of sponge via ostia, and exit through the osculum. With the external pumping of water, the cells found in the walls filter out the food present in the water.  

Convection currents in Earth's mantle result from heat transfer from the core, causing mantle material to circulate in a pattern that drives tectonic plate movement. Hot mantle material rises, cools, and then sinks back, creating a continuous convective cycle.

The convection currents in Earth's mantle are movements of the mantle material caused by the internal heat from Earth's core. Think of it like a pot of water on the stove, where the heated water expands, becomes less dense, and rises, while cooler water sinks to replace it, setting up a continuous circulating pattern.

Inside Earth, heat is continuously transferred from the core to the mantle, causing mantle convection. Although the mantle is solid rock, it can flow very slowly over time. These mantle convection currents are the primary driving force behind the movement of tectonic plates. Underlying convection cells can push the plates apart at mid-ocean ridges, where new lithosphere forms, or cause them to converge, with one being subducted, at deep-sea trenches.

As the hot mantle material rises and reaches the surface, it moves horizontally, cools down, and eventually sinks back into the mantle, completing the cycle and forming a convection cell. This cycle is fundamental for many geological processes, including the formation and movement of tectonic plates.