periodic table of elements an atom contains 11 protons and 12 neutrons, its atomic number will be_ and the mass number will be _.

a 1, 23
b 11, 23
c 12, 11
d 23, 11

Answer:

Explanation:

Both ferns and cedar trees rely on wind-dispersed pollen to successfully fertilize themselves.

Ferns are a group of vascular plants that reproduce via spores. These spores are produced in clusters called sori, which are found on the underside of fern fronds. The spores are released from the sori, and are carried away by the wind to fertilize other ferns.

Cedar trees, which are coniferous trees, also rely on wind to disperse their pollen. The male and female cones of the tree are separate, with the male cones releasing pollen into the air which is carried by the wind to fertilize the female cones on the same or nearby trees.

Both ferns and cedar tree do not produce flowers or rely on animal vectors (like bees or butterflies) for pollen transport, they use the wind to move their reproductive cells and complete the fertilization process.

Carcinogens are the agents that cause cancer in an organism and can be man-made or natural. Latex is not a type of carcinogen. Thus, option a is correct.

Carcinogens are the substances that can be a chemical or a biological compound that are capable of causing cancers. They can be natural agents like UV rays from sun, solar radiations, or viruses or can be a man-made substance like tobacco, nicotine, fumes.

These substances are capable of causing genetic mutations by altering the genomic sequence and the nitrogenous base that affects the genotype and the phenotype. The carcinogens leads to growth of abnormal and cancerous cells. Latex is a secondary metabolite that doe not causes cancer.

Therefore, option a. latex is not a carcinogenic agent.

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Answer:

Burning of woods has a negative impact on the climate.

Explanation:

Burning of woods for heating has a negative impact on our climate because it releases carbondioxide gas which is a greenhouse gas that trapped the reflected solar radiation and leads to global warming. We have to used alternative methods for heating such as electric heater instead of burning of wood which produce no pollution and can fulfill the requirement of heating so from the above discussion we can say that the activity has a negative impact on the environment.

Answer:

C. Clones

Explanation:

Clone definition: An organism or cell, or group of organisms or cells, produced asexually from one ancestor or stock, to which they are genetically identical.

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In photosynthesis, matter components are chlorophyll, water, carbon dioxide and glucose. Energy components are light energy, chemical energy, thermal energy.

Chlorophyll: a pigment found in the chloroplasts that absorbs light energy

Water: a molecule that is oxidized during the light-dependent reactions

Carbon dioxide: a molecule that is used as a source of carbon for the synthesis of organic compounds

Glucose: a simple sugar produced as a result of the light-independent reactions.

Light energy: energy from the sun that is absorbed by the chlorophyll to drive the reactions of photosynthesis

Chemical energy: energy stored in the bonds of glucose and other organic compounds produced during photosynthesis

Thermal energy: energy in the form of heat that is released as a byproduct of the reactions of photosynthesis.

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Common reduction techniques result in oxygen loss. For instance, the reduction reaction process is used to decrease ore.

To obtain metals, build electrochemical cells and transform ammonia into nitric acid. Redox reactions, or reduction-oxidation processes, are the simultaneous reduction and oxidation of chemical substances. Oxidized species lose electrons, whereas reduced species gain them. Even without oxygen present, oxidation can still take place. Oxygen has the chemical symbol O and an atomic number of 8. It belongs to the periodic table's chalcogen group and is a very reactive nonmetal.

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Whales accumulate carbon in their bodies during their long lifespans. When they die, they sink to the bottom of the ocean. Each large whale binds an average of 33 tons of carbon dioxide and removes this carbon from the atmosphere over centuries. Trees, on the other hand, only absorb up to 48 pounds of CO2 per year.

Rapid global warming has led to habitat loss for whales and dolphins, increasing competition for fewer and fewer prey species. It affects the timing and extent of migration, distribution and even fertility.

Scientists call large whales "ecosystem engineers." Research shows that whales cycle nutrients in the oceans, help produce the oxygen we breathe, and play an important role in mitigating greenhouse gases. Whales are not only amazing, they are breathtaking.

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DNA polymerase enzyme can proofread the DNA molecule, minimizing the mistakes made during the process of DNA replication.

Fortunately, cells have developed extremely complex mechanisms to correct most but not all of those errors. Some of the errors are fixed during replication in a step known as proofreading, while others are fixed in a step known as mismatch repair after replication. Replication is halted when an erroneous nucleotide is added to the developing strand because it has an exposed 3′-OH group that is in the incorrect location. DNA polymerase enzymes notice this during proofreading and swap out the wrongly inserted nucleotide to allow replication to proceed. About 99 percent of total corrections can be corrected through proofreading, but that is still insufficient for healthy cell activity.

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Answer:

D

Explanation:

When shellfish ingest dinoflagellates, a) they turn red. So,correct option is a.

Red tides are conditions when a dinoflagellate ingest builds to such gigantic numbers that it stains the water. This "sprout" might be brought about by supplement and hydrographic circumstances, albeit the natural circumstances which bring about red tides are not totally perceived. For dinoflagellate red tides, the water is stained red or brown due to as high as 20 million cells for every liter. These red tides are made fundamentally out of one types of dinoflagellate that has been quickly developing and gathering.

The dinoflagellates are a monophyletic gathering of single-celled eukaryotes comprising the phylum Dinoflagellata and are generally viewed as green growth. Dinoflagellates are generally marine tiny fish, yet they likewise are normal in freshwater natural surroundings. Their populaces differ with ocean surface temperature, saltiness, and profundity. Many dinoflagellates are photosynthetic, yet a huge part of these are truth be told mixotrophic, consolidating photosynthesis with ingestion of prey (phagotrophy and myzocytosis).

Hence,correct option is a.

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In toxicity testing, the dose of a chemical above which there is a measurable decline in the health of the organism being tested is referred to as the toxicity threshold.

A level of the dose above which the toxic effects of the dose can be observed in an organism is known as the toxicity threshold.

Below the threshold dose, no toxic effects are observed. Toxicity testing, also referred to as safety testing or toxicity analysis, is the study of the extent to which an interested substance adversely affects an organism’s normal functions, based on exposure time, exposure route, and concentration of the substance.

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Answer:

a

Explanation:

Answer: D

Explanation: resources are called non-renewable not because they have been completely used up or will never replenish but because they take a long time ie about thousands or millions of years to replenish.

Answer:

since it says producer im thinking maybe wheat because you can eat wheat, it has to be wheat

Explanation:

the following is a true statement regarding photoreceptors is Rods are responsible for night vision.

Two types of photoreceptors reside in the retina: cones and rods. The cones are responsible for daytime vision, while the rods respond under dark conditions. The cones come in three varieties: L, M, and S types.

Photoreceptors in the retina are classified into two groups, named after their physical morphologies. Rod cells are highly sensitive to light and function in nightvision, whereas cone cells are capable of detecting a wide spectrum of light photons and are responsible for colour vision.

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The true statement about photoreceptors is-"Rods are responsible for night vision".

There are four photoreceptor types in the human retina- Short-wavelength cones (blue), medium-wavelength cones (green), long-wavelength cones (red) and rods.

Photoreceptors are specialized neurons found in the retina that convert light into electrical signals that stimulate physiological processes. Signals from the photoreceptors are sent through the optic nerve to the brain for processing.

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Our atmosphere also contains it as carbon dioxide, or CO2. Calcium, magnesium, potassium, or sodium ions are released as the acid dissolves the rocks, a process known as chemical weathering.

As carbon dioxide, or CO2, it is also present in our atmosphere. Rain starts the transfer of carbon from the atmosphere to the rocks, or lithosphere. Rain is a result of the weak acid, carbonic acid, which is created when atmospheric carbon and water interact.

Therefore, When animals perish, volcanoes erupt, fires burn, fossil fuels are consumed, among other processes, carbon is released back into the atmosphere.

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Answer: A composer may want to alter or highlight a rhythm or a tone to create a desired effect or mood. By emphasizing certain rhythms or tones, a composer can create a sense of urgency, tension, or excitement. Additionally, by altering the rhythm or tone, a composer can add texture or depth to a piece of music, making it more interesting and unique.

It is true that If LaL turns into a gel when exposed to a sample, it means the sample is contaminated with gram-negative bacteria.

Both the color and the turbidity of LAL are used to identify endotoxins. The mixture turns yellow when the kinetic chromogenic LAL reagent reacts with endotoxins. By looking for pyrogenic responses in horseshoe crab blood cells, this identifies the presence of bacterial endotoxins. The outer membrane of Gram-negative bacteria contains endotoxins. In order to ensure product safety and quality in the medical and pharmaceutical industries, their detection is essential. Gram-negative bacteria's outer membrane and cell wall are primarily made up of endotoxins.

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(complete question)

If LaL turns into a gel when exposed to a sample, it means the sample is contaminated with gram-negative bacteria.

true or false.

Answer:

C. Light intensity

Explanation:

they need light to grow so they stay near the ocean surface because that's where the most light is

It is true when you don't consume enough protein, your body will start using your muscles and organs as a source of protein.

A structure composed of amino acids. The body need proteins to function properly. They serve as the building blocks for several bodily components, including the skin, hair, and enzymes, cytokines, and antibodies.

A severe protein deficiency can hinder children's growth, contribute to fatty liver and skin, induce edema, and worsen infections. True deficiency is uncommon in affluent nations, although a low intake can lead to muscular atrophy and an increased risk of fractures.

Additionally, a lack of protein over time might cause you to lose muscle mass, which will reduce your strength, make it more difficult for you to maintain your balance, and slow down your metabolism.

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Answer:

A is answer

Explanation:

A recent development to address food shortages in urban areas is to create community gardens. The city usually sets aside a space for people to grow their own food.

Answer:

Its b.

Explanation:

Answer:

I believe it is B

Explanation:

The biosphere is where life is, which has trees. The smoke from the trees is going into the atmosphere.

At the peak of depolarization, voltage-gated Na+ and K+ channels undergo a series of changes. Specifically, the inactivation gates of voltage-gated Na+ channels close and the inactivation gates of voltage-gated K+ channels open.

This allows for the flow of Na+ ions into the cell and K+ ions out of the cell, thus creating an electrical potential difference across the plasma membrane. The closing of the inactivation gates of voltage-gated Na+ channels is an important step in depolarization, as it allows for the influx of Na+ ions into the cell.

This influx of Na+ ions causes the cell to become more positively charged and thus more depolarized. The opening of the inactivation gates of voltage-gated K+ channels also plays an important role in depolarization, as it allows for the efflux of K+ ions out of the cell. This efflux of K+ ions causes the cell to become more negatively charged and thus more depolarized.

In addition to the inactivation gates of voltage-gated Na+ and K+ channels, the activation gates of these channels also undergo changes at the peak of depolarization. Specifically, the activation gates of voltage-gated Na+ channels close and the activation gates of voltage-gated K+ channels open. This allows for the influx of Na+ ions into the cell and the efflux of K+ ions out of the cell, further contributing to the depolarization of the cell.

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The conclusion of Mendelian genetics emphasizes particulate factors which are the determinants of inherited traits. These factors are referred to as genes. Each parent's cell contains a pair of genes for each trait under investigation. One allele for the dominant phenotype and one for the recessive phenotype are present in the F1 offspring of a cross of two pure lines.

In the 19th century, Mendel performed thousands of experiments with pea plants. He came to the further conclusion that genes are inherited as distinct, paired units from each parent. Mendel studied how parental genes diverged and whether they manifested in the offspring as dominant or recessive traits. The passing of mathematical patterns from one generation to the next was something he was aware of.

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Mendel was greatly involved in the field of genetics, and provided first hypothesis or law named as law of segregation.

Mendel's First Law, also known as the Law of Segregation, states that the alleles for a trait separate during the formation of gametes and randomly unite at fertilization. This means that when two parents with different alleles for a trait produce offspring, each offspring will receive one allele from each parent. This law helps to explain why certain traits are inherited, as well as why the ratio of certain traits can be predicted.

The Mendel made all the observation for the hypothesis or law using Pea plant, that was the best model he selected by careful observation skill that he possessed. The Law of segregation was proven by the pea plant as plant producing violet flower having heterozygous condition could give rise to white flowers in next generation, confidently explaining the process of segregation.

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Answer:

what is the assignment on

have a good day :)

Explanation:

Answer:

What's the main question of the assignment.