HELLO EVERYONE
Which statement is correct?

A. The number of electrons of a neutral atom always equals the number of protons.
B. Atomic weight is identical to atomic mass.
C. The number of neutrons always equals the number of protons.
D. The number of neutrons always equals the number of electrons.

Answers

Answer 1

Answer:

A. The number of electrons of a neutral atom always equals the number of protons.

Explanation:

For Example

Sodium (Na)

Atomic Number = 11

number of protons and electrons = 11

Answer 2
It’s A.the number of electron of a neutral atom always equals the number of protons

Related Questions

Which option gives an accurate reason why ethical guidelines are needed for the way scientific information is communicated?
(Select all that apply)
Businesses can perform and fund research studies, which potentially creates bias.

Scientific journals have a long history of publishing questionable research.

Government funding of research studies has the potential to create bias.

Poor research could potentially impact the health and welfare of the public.

Answers

Answer:

Poor research could potentially impact the health and welfare of the public.

Explanation:

Scientific studies are generally believed to be based on thorough research. This implies that members of the public always trust scientific publications and rely on same as a source of accurate and trustworthy information.

Science, being empirical in nature is believed to eliminate bias in its research and reportage of studies. Scientific research publications is often a source of information for field practitioners in diverse disciplines as well as the general public.

Poor research will mislead a large section of the public, both professionals in that field as well as laymen. This poor research could potentially impact the health and well being of members of the public negatively because they may be led to believe false information which can be disastrous. This is the reason why ethical guidelines are needed for the way scientific information is communicated.

give examples of how hypothesis lead to new experimental methods

Answers

Answer:

Thomas Hunt Morgan continues on with the genetic research which is of Gregor Mendel but according to research Morgan used fruit flies.

Explanation:

Hypothesis is termed as an explanation which is being proposed for a phenomenon. There is a difference which is between scientific theory and scientific hypothesis.

what are the molecules that make up the DNA rail?

Answers

DNA rails are made up of deoxyribose (sugar) and phosphoric acid.

a.
Identify the biotic limiting factor from the choices below.
space
b. vegetation
C. water
d. climate

Answers

Answer:

b.

Explanation:

Plants are living things(biotic).

water and climate are non-living things (abiotic)

Power is measured in _______?​

Answers

Answer:

joules

Explanation:

i think

Power is measured in units

Which scenario causes gene flow

Answers

Answer: Migration is one way that genes are transferred from one population to another.

Explanation:  Gene flow is caused by a significant change in the population of individuals due to the addition of other individuals whose alleles are slightly different from those of the existing individuals

Answer:

Introgression refers to gene flow from another taxon. While low levels of gene flow between species are not uncommon, it is a serious issue when an introduced invasive species hybridizes with a native species and overwhelms its genetic constitution (genetic swamping). This is a major threat in canids, ducks, fish and plants. For example, exotic rainbow trout introduced into the habitats of native cutthroat trout in the Western United States led to hybrid swarms that eventually overwhelmed the local species. Introgression is readily detected by molecular genetic and genomic methods.

Explanation:

HOPE ITS USEFUL


What is the main function of the structure labeled A?


It attracts insects and other animals.
It moves the pollen to the ovaries.
It catches pollen.
It produces pollen.​

Answers

Answer:

D

Explanation:

I did the assignment

The main function of the structure labeled A is it produces pollen. Therefore, the correct option is D.

What is a pollen?

Pollen is a microscopic, powdery substance produced by the male reproductive organs of seed plants. It is made up of cells that contain the male gametes (reproductive cells) and is responsible for fertilizing the female reproductive cells (ovules) to produce seeds.

Pollen is often carried from one plant to another by wind, insects, or other animals, where it can then come into contact with the female reproductive organs of a different plant.

If the pollen comes into contact with a receptive ovule, it can fertilize the ovule and produce a seed. Therefore, the correct option is D.

Learn more about pollen, here:

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The question is incomplete, but most probably the complete question is,

What is the main function of the structure labeled A?

A. It attracts insects and other animals.

B. It moves the pollen to the ovaries.

C. It catches pollen.

D. It produces pollen.​

Is the greenhouse effect good or bad

Answers

it is a good thing because it helps reduce the radiation that the earth emits

What are the commercial uses of yeast and bacteria? Explain.​

Answers

Answer:

commercial use of yeast are:

Explanation:

1. yeast is microorganism which is used for large production of alcohol. this alcohol is used in making of wine, beer, whisky as well as industrial spirit.

2. yeast is capable of converting sugar into alcohol .


1.
Which list below describes the next steps of evaporated water through the water cycle? (3 points)
Condensation, precipitation, runoff, ocean storage
Transpiration, condensation, precipitation, ocean storage
Precipitation, condensation, runoff, groundwater
Evaporation, condensation, precipitation, runoff
2.


What is a possible cost of using nonrenewable energy resources? (3 points)
Greenhouse gases
Less water pollution
Sustainable energy
Costs more money
3.


What is the benefit of recycling plastic and paper products to wildlife? (3 points)
Less expense
Clean fuel
Sustainable energy
Fewer landfills
4.


What is the next phase of the carbon cycle for the carbon source labeled A? (3 points)

Label A shows a collection of coal, oil and gas. Label B shows a collection of trees and vegetation. Label C shows sky and open atmosphere.

Photosynthesis
Ocean storage
Fossil fuel emissions
Transpiration
5.


Where is the last storage location for melted snow? (3 points)
Rivers
Ocean
Streams
Mountains
6.


How can the carbon stored in plants reach the atmosphere? (3 points)
Evaporation
Diffusion
Photosynthesis
Cellular Respiration
7.


Which statement best describes the role of plants in the water and carbon cycles? (3 points)
Plants release oxygen when they decompose take in oxygen for photosynthesis.
Plants take in carbon dioxide during photosynthesis and absorb water through their leaves and roots.
Plants take in oxygen during photosynthesis and absorb carbon dioxide through their leaves and roots.
Plants use oxygen to perform photosynthesis and release carbon dioxide as a by-product.

Answers

Answer:

1. d  

2. a  

3. d  

4. probably c  

5. b  

6. d  

7. b

Explanation: Got straight A's in all my biology classes, hope this helps!

Find the area o o
Trabezium whose parallel
sides are 57cm & 33cm and the distance between
them is 13cm​

Answers

Answer:

585 cm²

Explanation:

base lengths= 57 cm and 33 cm

height= 13 cm

area= 1/2(57+33)*13= 585 cm²

[tex]\huge{\mathfrak{\purple{Question}}}[/tex]

Find the area of Trapezium whose parallel

sides are 57cm & 33cm and the distance between them is 13cm

[tex]\huge{\mathfrak{\purple{Answer}}}[/tex]

585 cm²

[tex]\huge{\mathfrak{\purple{Explanation}}}[/tex]

Given

Sides of Trapezium ( Length )= 57 and 33 cmDistance Between them ( Height ) = 13 cm

To find Area of Trapezium

Formula of Area of Trapezium

Formula of Area of Trapezium = 1/2 X ( Sum of Length ) X Height

= 1/2 X ( 57 + 33 ) X 13

= 1/2 X 90 X 13

= 585 cm²

#HopeItHelps

within which structure does the placenta normally develop ?

Answers

Answer:

Uterus

Explanation:

Answer:

Uterus

Explanation:

The female reproductive system mainly takes place here

why is the nucleus command center of the cell

Answers

It codes for all the processes within the cells and contains the DNA.

Answer: The nucleus is the largest and most prominent of a cell's organelles (Figure 3.7). The nucleus is generally considered the control center of the cell because it stores all of the genetic instructions for manufacturing proteins.

Explanation: Plz can I have brainlest.

how could the presence or absence of a protein determine a phenotype

Answers

Answer:Proteins Dictate Phenotype

Genotype controls phenotype because genes direct the production of proteins . ... Some proteins serve structural functions (for example, in the maintenance of cell and/or tissue shape and rigidity) while others are involved in the transport of molecules and communication between cells.

Answer:

Each protien is essentially a code for a genotype (what the DNA is "saying"). Different genotypes (or DNA combinations) cause the person, plant, animal, etc. to look different.

Read the information for transcription and then answer the question. Protein Synthesis Explain the process of transcription.

Answers

Answer:

Please find the explanation below

Explanation:

Transcription is the first process that occurs in protein synthesis. It involves the use of the stored information in the DNA molecule to synthesize a mRNA molecule.

Transcription, which occurs in the nucleus of eukaryotes and cytoplasm of prokaryotes, is catalyzed by an enzyme called RNA polymerase. RNA polymerase binds to the double-stranded DNA and begins to unwind it (Initiation). This unwinding causes the nucleotide bases to be exposed in order for the RNA polymerase enzyme to read.

The enzyme reads the bases of the DNA and begins to synthesize RNA nucleotides using the complementary base pairing rule (Elongation) i.e. Adenine base paired with Uracil base (RNA), and Guanine paired with Cytosine etc.

The single-stranded mRNA is released at the end of the transcription process (termination). This is basically what occurs in transcription.

The gene coding for the protein untwists and unzips.

RNA nucleotides form complimentary base pairs with the DNA bases.

Hydrogen bonds and sugar-phosphate bonds form and the mRNA strand is synthesized.

mRNA peels off the DNA and moves to the cytoplasm.

Analicen el cariotipo humano y den dos ejemplos de pares de cromosomas metacéntricos, dos ejemplos de pares telocéntricos y dos ejemplos de pares acrocéntricos.

Answers

Analyze the human karyotype and give two examples of pairs of metacentric chromosomes, two examples of telocentric pairs, and two examples of acrocentric pairs.

Answer: The test that is conducted to evaluate and identity the shape,size and number of chromosomes in cells of organism is called the Karyotype.

Metacentic chromosomes   are X -  shaped chromosomes. They have centromere at the middle, which makes the arms of the chromosomes equal in length. Therefore any type of chromosomes with equal length of arms is said  to be Metacentic.  Thus  chromosomes  on position  1,13, 16 , 19  and 20 are examples.

When a pair of chromosomes showed  a regular segregation at anaphase  of meiosis, they are said to be telocentric. They are type of chromosomes in which the centromere are located  at the terminal ends of the chromosomes, with the telemeres extending from theses ends.Hence during segregation, the ends of  telocentric chromosomes are orientated towards the poles of the cells. example is the alphabets ''i'' shaped chromosomes in mice and 29 pairs autosomes  in Angora goats.

When the centromere is located in such a way that one arm lenght of a chromosomes is longer than the other, then this is called acrocentric. Example is chromosome 21 of down syndrome.others are 13, 14, 15, 22, and Y-chromosomes.

Explanation:

If a lunar eclipse occurs tonight, the next lunar eclipse would occur?

Answers

Answer:

in 10 years

Explanation: im pretty sure

Answer:

every 2.5 years

Explanation:


Which correctly describes a difference between the male and female
reproductive systems?
O A. Males store gametes in the ovary.
O B. Females produce gametes every day.
C. Males receive gametes from females.
D. Females produce fewer gametes​

Answers

What describes the difference between the male and female reproductive systems is that "Females produce gametes every day". Option B. This is further explained below.

What is reproductive systems?

Generally,  The reproductive system is simply defined as the organs that are involved in the production of children.

In conclusion, The reproductive systems of males and females bear differences affiliated with gametes production.

Read more about Reproduction

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Answer:

D. Females produce fewer gametimes

Explanation:

Do I really need to?

Question 5
is to the Calvin cycle.
Chlorophyll is to the light reactions as
O NADP+
O carbon dioxide
O ATP
O ATP synthase
O RuBP

Answers

Carbon dioxide because it’s so light that you can’t smell or feel it

Think back about your experience in this lab using a dichotomous key. What might make it hard for someone to use a dichotomous key? Make a list of possible reasons.

Answers

Answer: why it is hard to use dichotomous key in the lab are;

If the organisms you want to use it for are similar.

If you can't see the little characteristics posses by the organisms you are using it for.

If all the pictures does not reveal all the important features of the organisms.

It is very difficult to use it to determine the anatomical structure.

Explanation:

Dichotomous key is an important method that is use in biology to identify organisms by separating or dividing the organisms into two groups. It is a tool created by scientists to help them identify organisms or objects. Once the organisms are group into two, more information is revealed more individually.

Answer:

The person who commented before me was correct. They should get brainliest. Below is the same thing they wrote just in paragraph form.

If the organisms you want to use it for are similar. If you can't see the little characteristics posses by the organisms you are using it for. If all the pictures does not reveal all the important features of the organisms. It is very difficult to use it to determine the anatomical structure.

Based on the genotype of AB blood, what relationship do the A and B genes have?
A is recessive.
B is recessive.
They show incomplete dominance.
They are codominant.

Answers

Answer:

They are codominant.

Explanation:

A and B are  both expressed , when they are both inherited.

Answer: PLATO answer:

They are codominant

Explanation: The A and B antigens are equally present on the red blood cells, so the relationship of the A and B genes is codominant.

Rashida doesn’t think that skepticism should play an important role in the scientific process. She says that skepticism interferes with scientific consensus. Which statement best describes Rashida’s conclusion?
It is incorrect because skepticism helps scientists recognize when ideas are not supported by evidence.
It is correct because skepticism prevents the acceptance of creative ideas and new discoveries.
It is correct because skepticism prevents scientists from testing new ideas and communicating with other scientists.
It is incorrect because skepticism leads to the acceptance of new ideas, which can eventually gain scientific consensus.

Answers

Answer: b

Explanation: sorry if im wrong

ATP molecules, which are used for energy by cells, are built during all three stages of cellular respiration. Which stage of cellular respiration generates the most ATP molecules? (1 point) The Krebs cycle Glycolysis The electron transport chain Fermentation

Answers

Answer:

Electron transport chain.

Explanation:

What did you include in your response? Medications can be tested on cell cultures instead of being injected into patients unnecessarily. Cancer cells continue to grow in the cultures uncontrollably allowing scientists to test multiple medications on the cancer cells. Specific treatments that are shown to fight the growth of cancer cells in the culture can be used on patients. Cultures are safer to use than injections of unneeded medications into patients.

Answers

Answer:

The statements are correct.

Explanation:  

Cell culture is a technique widely used in molecular biology where cell lines are grown in controlled conditions, thus allowing to make experiments and to test compounds that may result useful to treat diverse diseases, including cancer.  

Immortalized cell lines are characterized for their ability to proliferate indefinitely which are derived from oncogenic tissues. In cancer research, these lines are used as models to test different drugs and to study cellular mechanisms associated with cancer progression including, among others, proliferation, invasiveness, vascularization, etc. In addition, the mechanisms associated with the death of cancer cells such as, for instance, apoptosis, may also be studied by using immortalized lines.

Explain how is it possible to have twins that are not identical​

Answers

Fraternal (dizygotic) twins come from 2 different fertilized eggs that both grow in the mother's womb. They have different DNA (2 eggs from the mother, 2 sperm from the father) and are not identical, although they often look alike.

Identical (monozygotic) twins come from one fertilized egg that has split in two. These twins share the same DNA and are completely identical.

Identical twins develop from the same egg and sperm,the embryos split and form identical twins ,they are the same sex. But some are fraternal twins, they develop with two diferent sets of sperm and eggs by the same parents. They can be from diferent, this is like having diferent babies at the same time.

Respiration occurs in the__________
1 nasal cavity
2 lungs
3 red blood cells
4 cells of the body

Answers

Answer:

cells of the body

Explanation:

Respiration happens in the cells of plants, animals and humans, mainly inside mitochondria, which are located in a cell’s cytoplasm, energy released during respiration is used by plants to make amino acids, and by animals and humans to contract their muscles to let them move. Don't confuse respiration with breathing. Respiration releases energy, while breathing

i am usually single-stranded. is it DNA O RNA ?

Answers

Answer:

RNA

Explanation:

DNA is double-stranded DNA mostly and RNA is single stranded mostly.

RNA is single and DNA is doubles

PLEASE HELP !!! Match the following terms and definitions.

1. the testing of a hypothesis in duplicate with only one factor being different
scientific method
2. an assumed explanation for a problem
hypothesis
3. a recognized means of inquiry to provide scientific answers to questions
theory
4. supported by evidence gathered over a period of time
controlled experiment

Answers

Answer:

Controlled experiment: the testing of a hypothesis in duplicate with only one factor being different.

Scientific Method: a recognized means of inquiry to provide scientific answers to questions.

Hypothesis: an assumed explanation for a problem

Theory: supported by evidence gathered over a period of time

Hope this is right!!!

What is phototropism???​

Answers

Answer:

Phototropism is an important light response in plants. Positive Phototropism leans towards the light and negative Phototropism growth away from the light.

Explanation:

Which is an example of matter cycling through the bodies of living things?
A. Whales swimming in the ocean
B. Whales eating plankton
C. People visiting the aquarium
D. Plankton moving with the tide



Answer: B whales eating plankton

Answers

Answer: I would say B. whales eating plankton

Explanation: Whales eating plankton causes the plankton to travel through the digestive tract and be converted to energy, so that answer would probably be your best bet.

Answer:

b

Explanation:

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Prepare a correct statement of comprehensive income.MONTY CORP.Partial Statement of Comprehensive IncomeSelect a comprehensive income itemDividendsExpensesNet Income / (Loss)Retained EarningsRevenueTotal ExpensesTotal RevenuesIncome Tax ExpenseOther Comprehensive IncomeUnrealized Holding Gain on Available-for-Sale SecuritiesIncome Before Income TaxesComprehensive Income$Enter a dollar amountSelect a comprehensive income itemDividendsExpensesNet Income / (Loss)Retained EarningsRevenueTotal ExpensesTotal RevenuesIncome Tax ExpenseOther Comprehensive IncomeUnrealized Holding Gain on Available-for-Sale SecuritiesIncome Before Income TaxesComprehensive IncomeEnter a dollar amountSelect a summarizing line for the first partDividendsExpensesNet Income / (Loss)Retained EarningsRevenueTotal ExpensesTotal RevenuesIncome Tax ExpenseOther Comprehensive IncomeUnrealized Holding Gain on Available-for-Sale SecuritiesIncome Before Income TaxesComprehensive IncomeEnter a total of the two previous amountsSelect an opening section nameDividendsExpensesNet Income / (Loss)Retained EarningsRevenueTotal ExpensesTotal RevenuesIncome Tax ExpenseOther Comprehensive IncomeUnrealized Holding Gain on Available-for-Sale SecuritiesIncome Before Income TaxesComprehensive IncomeSelect a comprehensive income itemDividends Expenses Net Income / (Loss) Retained Earnings Revenue Total Expenses Total Revenues Income Tax Expense Other Comprehensive Income Unrealized Holding Gain on Available-for-Sale Securities Income Before Income Taxes Comprehensive Income Enter a dollar amountSelect a closing name for this statementDividendsExpensesNet Income / (Loss)Retained EarningsRevenueTotal ExpensesTotal RevenuesIncome Tax ExpenseOther Comprehensive IncomeUnrealized Holding Gain on Available-for-Sale SecuritiesIncome Before Income TaxesComprehensive Income$Enter a total amount for this statement