A scientist is trying to identify an element. It contains 4 protons and two valence electrons

Answers

Answer 1
The answer is Helium

Related Questions

The best reason to assign tasks to each member of a study group is to

make learning easier.
share the workload fairly.
help meetings go faster.
make students study harder.

Answers

Answer:

share the workload fairly.

Explanation:

The best reason to assign tasks to each member of a study group is to share the workload fairly across the group.

Sharing the workload this way helps all students to learn and feel part of the study. Through such group works, the academic prowess of student can be assessed. Also, the group collaborating tendency of a student can be better projected.

Answer: share the workload fairly

Explanation: I got it right on edge 2020

In the food chain, how much energy is transferred from the Sun to a producer?

Answers

Answer:

1%

Explanation:

Your answer is A, 1 percent

Which are examples of lung diseases? Select all that apply

Answers

Answer:

1,2

Explanation:

Answer:

asthma and COPD

Explanation:

The viceroy butterfly is not poisonous but has coloration that is almost identical to the poisonous monarch butterfly. Which type of adaptation does this describe?

Mimicry

Warning coloration

Camouflage

Chemical defense

Answers

Answer:

mimicry

Explanation:

if im wrong then plz virtually slap me

Answer:

A - Mimicry

Explanation:

Which is an effect of short-term environmental changes?
A) adaptation
B) speciation
C) extinction
D) death

Answers

Answer:

d

Explanation:

I believe D death. Sorry if I am am wrong but I am pretty sure it’s D death. Hope this helps.

In simple dominance, the dominant allele the recessive allele.
O a. decides to not attend anymore parties until her friend returns the sweater she borrowed last winter
O b. discusses terms of surrender
O c. masks
O d. obliterates

Answers

Answer:

C. Masks

Explanation:

When we are talking about genetics dominance is a phenomenon of one allele of a gene on a chromosome that masks the effect of a different variant of the same gene on the other copy of the chromosome. Genes don't have parties and sweaters so A is not an option here. They also can't surrender and even if they did they couldn't discuss anything. And they most certainly don't obliterate each other.

Someone help!!! Please ASAPPP

Answers

do you have to come up with your own biome or did they describe one to you for you to figure out ? if so can you give me the description and if not let me know and i’ll come up with a biome for you !

Which pair of structures would provide a positive identification of a plant cell under a microscope?

endoplasmic reticulum, chloroplasts


large central vacuole, flagellum


chloroplast, large central vacuole


cytoskeleton, cell wall

Answers

Answer:

C. chloroplast, large central vacuole

Explanation:

3.11 Quiz on K12 .^.

Answer:

chloroplast, large central vacuole

Explanation:

2.08 Quiz: Plant and Animal Cells

The Earth does not need a continual supply of materials.
True
False

Answers

Answer:

I think it is false because the Earth has a very large population of people and animals and each and every one of them needs nutrients to survive so I think the statement is false

Breeders can use a Punnett square to predict the outcome of a genetic cross. If the genotype of both parents was Aa, what would be expected of the genotypes among their possible offspring?

Answers

Answer:

AA, Aa, Aa, and aa

Explanation:

If you do the punnet square to solve this, you will see these results!

Answer:B on edge 2020

Explanation:half would have the genotype Aa

1. If we were exploring the ocean at a depth of about 5,200 m, what part of the ocean would we be exploring?

A. continental shelf
B. mid-ocean ridges
C. ocean floor
D. coastal plain

Answers

Answer:

c

Explanation:

hope this helps!!

Plss answer all! Help!

(1) What are the two main types of cells?
1.
2.

(2) What is a prokaryotic cell?

(3) What is a eukaryotic cell?

(4) What are the similarities between prokaryotic and eukaryotic cells?

(5) What are the parts of a prokaryotic cell?

(6) What are some examples of prokaryotic cells?

(7) What are examples of eukaryotic cells?

(8) What is another name for the cell membrane?

(9) What does selectively permeable mean? Why is the cells ability to do so important?

(10) Describe how the following are important in the makeup of the cell membrane:
1. Phospholipid bilayer
2. Proteins
3. Carbohydrates
4. Cholesterol

Answers

Answer:

there are two types of cell one eukaryotic cell that have true nucleus (genetic material enclosed in membrane) and membrane bounded organelles and other is prokaryotic cell that donot have have true nucleus (genetic material dispersed in cytoplasm) and membrane bounded organelles.

similarities between PC and EC is that both contains cell membrane, ribosomes (not a membrane bounded organelle) .

examples of PC are bacteria , paramecium,fungi etc

examples of EC are plant and animal cells

there are two names for cell membrane i.e plasmalemma, cell surface membrane,

selectively permeable or semipermeable means cell only allows those material to pass through its cell membrane which it needs.this cell'ability is important because to protection against the poisonous substance and to maintain cell needs .

A . producers
B . Consumer
C. Bacteria

Answers

The answer is B - Consumer

3. A section of DNA has been mutated.
The original DNA was TAC CTC ACC GAG CGT.
The mutated DNA is TAC CTC ACT GAG CGT.
What is the impact of this particular mutation on the organism? In order to find out, you need to transcribe and translate the codons.

Answers

Answer:

The mutation that involves the change in the sequence of DNA bases is reflected both in the transcription of mRNA and in translation, giving rise to an alteration in the protein, which may not function and whose impact on the organism is a morphological or functional alteration.

Explanation:

According to this scenario, the DNA has experienced a mutation by changing the sequence by one of its bases, Cytosine by Thymine, producing in the mRNA a termination codon that interrupts the normal synthesis of the protein, preventing that protein from fulfilling its function. This particular mutation is called Nonsense mutation.

For normal DNA

DNA      TAC CTC ACC GAG CGT

mRNA    AUG GAG UGG CUC GCA

Protein   Met - Glu - Trp - Leu - Ala

For the mutated DNA

DNA      TAC CTC ACT GAG CGT

mRNA   AUG GAG UGA CUC GCA

Protein  Met - Glu - STOP - Leu - Ala

The change of a cytosine by Thymine in the mutated DNA produces that the third codon of the mRNA is altered, encoding a UGA termination codon, which prematurely stops the protein synthesis and originates an incomplete protein, probably not functional, whose impact in the organism is a morphological or functional alteration.

Ostriches have wings but do not fly humans have an appendix with no apparent function whales contain bones for rear legs each of these are examples of

Answers

Answer:

vestigial structures

Ostriches have wings but do not fly, and humans have an appendix with no apparent function, whales have bones for their back legs, which are examples of vestigial structures because they were once functional but are no longer.

What is the importance of the vestigial organs in animals?

Vestigial organs have lost much or all of their ancestral function in the evolution process, for example, ostriches have wings that have lost the ability to fly and are now used for balance and courtship displays. The human appendix is another vestigial organ that once had digestive function but no longer does.

Hence, ostriches have wings but do not fly, and humans have an appendix with no apparent function, whales have bones for their back legs, which are examples of vestigial structures because they were once functional but are no longer.

Learn more about the vestigial organs here.

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what is respiration ​

Answers

Answer:

respiration is a process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic substances.

A person or organism Inhaling and exhaling oxygen

If black fur is produced by a recessive allele, which genotype is most likely to produce a black individual?

Answers

Answer:

bb

Explanation:

How much does the giant horse conch weigh?

Answers

Answer:

The giant horse conch can weigh up to eleven pounds.

Answer:

eleven pounds

I hope this helps

God bless

In order to test Lee for a genetic disorder, Dr. Aikenhed will probably take a sample of cells containing his genomic DNA by swabbing his cheek or taking a blood sample. Why is it important to use non-cancerous cells to test Lee for a genetic disorder instead of the biopsy tissue?

Answers

Answer:

Cancer is a chronic disease in which cells reproduce abnormally, exceeding the capacity of the body tissues to assimilate such reproduction, which causes alterations in these cells and in the organs they affect.

Therefore, if a sample is required to determine some type of genetic disorder in the patient, non-cancerous cells should be used, since these will contain genetic material free of any alteration caused by said disease and, therefore, will be a test of greater accuracy to determine said disorder.

The reason why non-cancerous cells is important to test Lee for a genetic disorder instead of the biopsy tissue is that that cancer cells often undergoes mutation in a short timeframe and also does gather a lot.

So therefore, an individual cannot know if a said mutation has been in the person since birth or otherwise.

It is very essential then to look the genetic makeup to normal cells and compare them to see as it could help in choosing personalized therapy for Lee.

Cancer cell's genes are very unstable in nature and they replicate very fast speed. The use of non cancerous cells will better tell if the cancer is genetic or not when compared to the use of biopsy tissue.

Germline testing is often carried out to know if an individual has a gene mutation that can increase the risk of developing cancers.

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Explain the electron pathway of the light reactions, and list the order in which each complex participates in the pathway.

Answers

Electrons are transferred sequentially between the two photosystems w photosystem I acting to generate NADPH and photosystem II acting to generate ATP the pathway of electron flow starts at photosystem II which is homologous to the photosynthetic reaction center of R (Brainliest Answer Will be appreciated:D)

What impact does altitude have on pressure?
Group of answer choices

It stays the same

It warms

It rises

It falls

Answers

Answer:

As altitude increases, the amount of gas molecules in the air decreases—the air becomes less dense than air nearer to sea level.

Explanation:

Answer:

It falls

Explanation:

I just took the test

Which of the following is true about mutations?
All mutations are harmful.
Every genetic mutation is expressed as a phenotype in the organism.
Mutations can be environmental or genetic.
Only some mutations involve a change in the DNA sequence.

Answers

Answer:

Mutations can be environmental or genetic

Only some mutations involve a change in the DNA sequence. Therefore option D is correct.

Mutations are changes in the DNA sequence of an organism's genome. Not all mutations are harmful; some can be beneficial or neutral.

Beneficial mutations can lead to advantageous traits, contributing to the organism's survival and evolution. Neutral mutations have no noticeable effect on the organism's phenotype.

Additionally, not every genetic mutation is expressed as a phenotype in the organism. Some mutations may occur in non-coding regions of DNA or be masked by other genetic factors.

Mutations can be caused by various factors, including environmental factors (e.g., radiation, chemicals) and genetic factors (e.g., errors in DNA replication, recombination).

Therefore option D Only some mutations involve a change in the DNA sequence is correct.

Know more about DNA sequence:

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3. A hydrophilic group is
a, attracted to water.
b. a polar and/or ionized group.
c. found at the end of fatty acids.
d. the opposite of a hydrophobic group.
e. All of these are correct.

Answers

The correct answer is E.

Which statement best describes the role of DNA in the body

Answers

Answer:

Long term storage of information

Explanation:

When norepinephrine is release at the synapse
Group of answer choices

blood pressure will be dropped.

neurons will be inhibited.

the heart rate will decrease.

the heart rate will increase.

Answers

Answer:

the heart rate will increase just googled it

All of the following are commonly used to monitor the health of a forest EXCEPT

A. Age of trees
B. Type of leaves
C. Number of trees
D. Thickness of bark

Answers

Answer:

B, type of leaves

Explanation:

A, the age, can be used to show on how long the trees have survived in their habitat

C, Number of trees can show how many are alive, and if the habitat is livable

D, Thickness of bark, The bark is the main part of the tree, if the bark is not thick and doing well, the tree can die

Answer:

Number of trees

Explanation:

Im not 100% sure tho i hope this helps

HELP! WILL GIVE BRANLIEST! (Question 4)

Answers

Answer:

The energy from the cell will block substances from being in the animal and stop the toxins from getting into the animal cell.

Explanation:

The job of this energy is to block everything from coming in and out of this cell membrane.

Can gold be created from other elements? why?

Answers

Answer:

yes, gold can be created from other elements. The process requires nuclear reactions and is so expensive that currently it would cost a lot more than the price of natural gold available, therefore, unprofitable. Gold is the chemical element with 79 protons in each atomic nucleus. Every atom containing 79 protons is a gold atom, and all gold atoms behave the same chemically. In principle, gold can be created by simply assembling 79 protons, (and enough neutrons to make the nucleus stable).

The nucleotide sequence of a DNA codon is TAG. In an mRNA molecule transcribed from this DNA, the codon has the sequence ______________. In the process of protein synthesis, a transfer RNA pairs with the mRNA codon. The nucleotide sequence of the tRNA anticodon is _____________. The amino acid attached to the tRNA is ____________.

Answers

Answer:

The nucleotide sequence of a DNA codon is TAG. In an mRNA molecule transcribed from this DNA, the codon has the sequence 5'-AUC-3'. In the process of protein synthesis, a transfer RNA pairs with the mRNA codon. The nucleotide sequence of the tRNA anticodon is 3'-UAG-5'. The amino acid attached to the tRNA is Isoleucine.

Explanation:

In the process of protein synthesis the mRNA contains the sequence of nucleotides —transcribed from the DNA— that defines the sequence of amino acids that a synthesized protein will have.

Codons are triplets of nitrogenous bases present in mRNA, which encode an amino acid, as well as the start and end of protein synthesis.

Anticodons correspond to triplets of bases present in transfer RNA (tRNA), which correspond with mRNA codons. tRNA is responsible for coupling amino acids to the polypeptide chain being synthesized. In view of this:

- DNA triplet:               TAG

- Codon mRNA:      5'-AUC-3'

- Anticodon tRNA:   3'-UAG-5'

- Amino acid:           Isoleucine

What would happen if our skeleton are made up of a single bone.

Group 3
Q. Which type of movement would have been possible if:
a. our elbow had a fixed joint
b. we were to have a ball and socket joint between our neck and head.

Q.2. Define the following:
a. Joints b. Ligaments C. Cartilages

Answers

Joints:-Joints are the areas where 1 or more bones meet.Most joints are mobile,allowing the bones to move.Joints consist of the following:Cartilage . This is a type of tissuethat covers the surface of a bone at a joint.Next Ligaments:-Ligaments are short bands of tough,flexible tissue,made up of lots of individual fires,which connect the bones of the body together.Ligaments can be found connecting most of the bones in the body.The function of a ligament is to provide a passive unit to amount of movement between your bones.

Other Questions
In the following expression, both A and B are variables that can take positive values.2\sqrt(A)-(B)/(5)Which of these actions will cause the expression's value to increase?Choose 2 answers:(Choice A)Keeping A constant and increasing B(Choice B)BKeeping A constant and decreasing B(Choice C)CIncreasing A and keeping B constant(Choice D)DDecreasing A and keeping B constant Help This is due in 30 mins! PLEASE?What climate condition occurs during El Nio?dry heat throughout North Americawarm water moving toward the coast of South Americaheavy rain moving toward the coast of South Americaflooding throughout North America Chicken liver is placed into lemon juice for 10 minutes. What type of evidence of a chemical reaction would be expected to occur when H2O2 (hydrogen peroxide) were added? A) a lot of bubbles within a few seconds B) some bubbles within the first minute C) very few to no bubbles D) the liver will catch fire, explote and cause the school to evacuate. Which two statements describe causes for Egypts defeat against the Hyksos?The Hyksos and Assyrians formed an alliance.The Hyksos used horse-drawn chariots with bronze weapons.The Persians betrayed the Egyptians to the Hyksos.The Egyptians fought on foot with copper and stone weapons.The Egyptians were recovering from a famine. Who became the prime minister of Britain after the french and Indian war In this image, what represents space?Cartoon animals in a forest.the blue sky at the backthe white of the tree trunkthe leaves behind the branchesthe trees in the distant background Alex tried to solve the equation 14x+12=2. What was his mistake?:(( hellppp 3. You raise your hand in class to answer a question that the professor asked. Whichmuscle type did you just use? Briefly explain your answer. The Bill of Rights secures fair, legal treatment for citizens. Which of the following displays this treatment?O a Citizens shall be required to wait until the court system is ready to hear their trial, even if it takes a long amount of time.Citizens shall be required to pay large sums of money to be considered not guiltyCitizens shall be brought to trial, even if there is not enough evidence to show they committed a crime.Citizens shall not be charged for the same crime twice. Identify the equatorial rainforest area that is the largest, after the AmazonBasin.A Congo BasinB Indonesian islandsC south east Asia D Mehagreb region Which of the followings is not primary data *5 points1 test marketing reports2 focus group meeting notes3 surveys4 periodicals. Question 1 Give the correct number of significant figures for 4500, 4500., 0.0032, 0.04050Question 2 Give the answer to the correct number of significant figures:4503 + 34.90 + 550 = ?the correct number of significant figures.uction 2 Give If the product (2x + 3)(x + k) is 2x2 + 13x + 15, what is the value of k? In the diagram shown, M, N and P are collinear and QM=QN as shown. If mMQN = 48" andmNQP = 33. Justify why QNP must be isosceles. Is H20 > H2 + O2 a balanced equation? What is the Awnser to this? Write an example of an adjective coming AFTER a noun. One example that I know is "chica rubio", where it translates to " blond girl" but I wanted to know some more examples. Is sickle cell anemia caused by genetic or environmental factors 3If a is 63% of x and c is8the closest equivalent of the ratio of a to c? of x, which of the following isO CE Which of these molecules' monomers is a series of nucleotides? * DNA RNABoth Neither