The atomic mass of arsenic is 75 atomic mass units; a neutral atom of asennic has 33 electrons. how many neutrons does arsenic normally have?
a.33 b.42 c.75 d.108
Answer:
42
Explanation:
Atoms have a neutral charge overall, which means they have an equal numbers of positively-charged protons and negatively-charged electrons. Here, an atom of arsenic with 33 electrons must also have 33 protons.
The mass of any atom is contained in its nucleus, a part made up of protons and neutrons - particles with no charge. Both protons and neutrons are exactly 1 atomic mass unit each, so to find the atomic mass of an atom, we can use the formula
(# of protons) + (# of neutrons) = atomic mass
or equivalently:
atomic mass - (# of protons) = (# of neutrons).
For arsenic, we have an atomic mass of 75 amu and 33 protons, so using our formula:
# of neutron = 75 - 33 = 42 neutrons
1.what is the difference between focus and epicenter?
2.Why earthquakers are stronger near the epicenter
.
Proteins in eukaryotic cells which control the progression of cells through the cell cycle are –
cyclins
recyclins
cytokines
cytochromes
Answer:
cyclins
Explanation:
Which describes a group of organisms that are members of a species?
Answer:
They can breed and produce offspring that can breed.
Explanation:
The options you were given are the following:
They can breed and produce offspring that can breed. They are members of the same community. They live in the same ecosystem, community, and biome. They have similar physical characteristics.A species can be defined as a group of similar organisms that can reproduce and produce offspring that can produce as well. This is why the first option is the correct one.
In ecology, the term community refers to a group of populations of two or more different species that inhabit the same area. More than one species can be found in a biome and ecosystem as well, which is why the second and third options are incorrect.
Some organisms can look very similar but belong to different species. This is why the fourth option is not correct, either.
Which of these molecules is not a macromolecule made up of many smaller
organic molecules?
O A. Complex carbohydrate
B. Nucleic acid
O C. Protein
D. Water
SUBMIT
( i don’t think B. and C. are it) (might be wrong but have a feeling.
Answer:
D.
hope this helps!!:)
Explanation:
Answer:
D. Water
Explanation:
Water is not a macromolecule, it is a micromolecule.
In DNA what is the complementary strand to GGACG?
Answer:
CCTGC
Explanation:
Adenine (A) and Thymine (T) are base-pairs whilst Cytosine (C) and Guanine (G) are base-pairs as well. Although they only go in the order A-T and C-G, you will never see Adenine and Cytosine together on a DNA strand.
stion: Will human activity impact the sustainability of a major ecosystem (Biosphere) on Earth?
A student creates a list of characteristics for a human cell and a virus. 1. smaller than an organelle 2. absence of metabolic activity 3. grows by dividing 4. presence of enzymes in the cytoplasm 5. surrounded by a protein coat Which characteristics are associated only with a virus? O 1, 2, and 3 O 1,2, and 5 O 2,3, and 4 O 2,3, and 5
Answer:
1, 2, and 5
Explanation:
Viruses are pathogenic microorganisms that lack the ability to thrive and reproduce outside of a living host cell. Their structure is simple - they consist of a nucleic acid molecule surrounded by a protein coating and sometimes an outer envelope. They are too small to be seen by a light microscope.
As they are way smaller than living cells, viruses are smaller than organelles as well. They don't have their own metabolism. Their reproduction is not based on division. They don't have any organelles, including the cytoplasm. They are surrounded by a protein coat called the capsid.
Based on this information, we can see that the correct statements are statements 1, 2, and 5.
Describe the Law of Universal Gravitation and the role that gravity plays in our solar system.
Answer:
Explanation:
Gravity and our Solar System The Sun’s gravity is what holds our solar system together. Planets and Gravity Since Jupiter is the largest planet, it has the most gravity. Pluto has the least amount of gravity of all the planets. A theory from Sir Isaac Newton states that Gravity is greater when mass is larger and distance is shorter.
what are four different types of bases in DNA and how do they pair?
Answer:
Adenine, Thymine, Guanine, and Cytosine
They possess complimentary paring. Meaning the one will only bind another, and will not bind with and other one
Explanation:
DNA has four types of bases, such as adenine (A), guanine (G), cytosine (C), and thymine (T). Adenine forms double hydrogen bonds with thymine, while guanine forms triple hydrogen bonds with cytosine.
What is the composition of the DNA?
DNA is called deoxyribonucleic acid. It is a polymer of nucleotides. Each nucleotide is made up of a phosphate, a pentose sugar, and a nitrogenous base. In DNA, there are four types of nitrogenous bases, such as adenine (A), guanine (G), cytosine (C), and thymine (T).
Adenine and guanine are purines and double-ringed structures. Cytosine and thymine are pyrimidines and single-ringed structures. A purine forms a bond with a pyrimidine. Adenine (A) forms a double hydrogen bond with Thymine (T), and Guanine (G) forms triple hydrogen bonds with Cytosine(C).
Hence, in DNA, four nucleotides are found: adenine (A), guanine (G), cytosine (C), and thymine (T). Adenine pairs with thymine, while guanine pairs with cytosine.
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Is mashing something a chemical change
Answer:
yes it is.... because the chemical has now changed it form
Explanation:
Is Mitosis is very similar to the first division in meiosis?
true or false?
Answer:
True
Explanation:
Can someone help me solve this???pls
Mark’s discovery has Emily concerned. She has blue eyes, while both of her parents have brown eyes. Is it possible for Emily to be their biological daughter?
(GIVING BRAINLIEST!!)
All planets in the solar system have surfaces that are made up of either one of two materials. What are the two materials?
A) Rock and gas
B) Water and dust
C) Ice and rock
D) Dust and gas
A) Rock and gas
The Solar System is the gravitationally bound system that includes the Sun and its orbiting components.
The four gas and ice giants, as well as the four terrestrial planets, are the largest of the worlds that orbit the Sun directly, followed by an unknown number of dwarf planets and uncountable minor Solar System components.
All planets in the solar system have surfaces that are made up of A) Rock and gas
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help please quickly i’ll mark brainlist
Answer:
Dextrose
Explanation:
answer these for brainlist and extra points!! ♥️
how does messenger rna work inside the cell
Answer:
A RNA polymerase separates the hydrogen bases of a gene to produce a strand of messenger RNA, which leaves to nucleus. When a ribosome attaches itself to the messenger RNA, it reads the RNA 3 bases at a time to build amino acids which are then folded into proteins.
More explained process:
Note: The description below will explain the process of “protein synthesis”, in which the mRNA (messenger RNA) takes part of.
In the process of protein synthesis, the first step is called “transcription”. In transcription, the mRNA (messenger RNA) unwinds DNA base pairs, and pairs it with the single strand of RNA (A,U,C,&G) . Then the mRNA moves out of the nucleus and into the cytoplasm to ribosome. That process is called “translation”. In translation, there is a molecule called tRNA (transfer RNA). There is an amino acid which corresponds to the base pairs of RNA in top, which will create a chain of amino acids. [ For example, the bases are AUC, the corresponding amino acid will be isoleucine (Ile). Next, the tRNA molecules carry the amino acids to mRNA, reads the RNA 3 bases at a time to build an amino acid chain which are then folded into proteins.
Which term refers to similar structures that related species have inherited from a common ancestor?
Answer:
homologous structures.
Explanation:
If two organisms look very similar during their early stages of development, this is evidence that the organisms. evolved from a common ancestor.
Which of these is a benefit of growing a crop that has been genetically modified to resist
insect pests?
O A. Pests can evolve to become resistant to the toxin produced by the modified
gene.
B. Farmers can grow the crop using fewer chemical pesticides than traditional
crops.
XO C. It will produce food that is more nutritious than that of traditional crops.
D. Its pollen can enter wild populations that serve as food for non-pest insects.
Answer:
B - farmers can grow the crop using fewer chemical pesticides
When a tall plant is crossed with a short plant, some of the offspring are short. What are the genotypes of the parents and the offspring? What is the phenotypic result in the offspring?
Answer:
Tall plant with genotypes Pp.
Explanation:
Make the question into a box represented what you are crossing and and the parents genotypes look like.
PP - Tall Plant
Pp - Tall Plant
pp - Short Plant
X P P
p Pp Pp
p Pp Pp
All of the offspring will be a Tall Plant with the genotype Pp.
Tall plants has genotypes [tex]\boldsymbol{Pp}[/tex].
Define genotypes.An individual's genotype is its entire set of chromosomes material. The alleles or variations that a person holds in a given gene or genetic region are referred to as genotype.
Some of the offspring of a tall plant crossing with a short crop are short, tall plants with genotypes [tex]\boldsymbol{Pp}[/tex]
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Which of these statements best explains why DNA is similar in most living organisms?
A. All organisms have the same number of chromosomes
B. All chromosomes have the same number of DNA nucleotide base pairs
C. All DNA contains the same bases that code the same amino acids
D. All SNA is passed from one generation to the next during reproduction
Answer:
D Hope this is right......
All DNA is passed from one generation to the next during reproduction. So the correct option is D.
What is the DNA?DNA or deoxyribonucleic acid is a polynucleotide molecule. Each nucleotide of DNA is composed of one nitrogen base, one deoxyribose sugar and one phosphate group.
The nucleotides are bonded with each other by the formation of phosphodiester bonds which liberate a water molecule.
The nitrogen base in the DNA is of four types. Adenine, Thymine, Cytosine and Guanine. The DNA is present in a double-stranded form and the nitrogen base is attached to each other in both the strands with the help of hydrogen bonds.
The nitrogen bases join with each other by the base pairing rule. Adenine joins to thymine and guanine joins to cytosine.
DNA a genetic material and a hereditary material. It is responsible for the functioning of an organism and the transmission of hereditary traits from one generation to the next.
Therefore the correct option is D.
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Over the years, scientific advancements have brought both benefits and disadvantages to society. Which of the
following is an area which has been both positively and negatively affected by scientific advancements?
a. food safety
b. waste production
c. climate
d. all of the above
Scientific knowledge is important to develop new technologies and solve problems. Scientific advancement in waste production brought both benefits and disadvantages to the society.
What is waste production?Waste production is the use of material and energy including the depletion of the Earth's renewable and non-renewable resources.
The recycling of waste can have many pros and cons, the benefits are:
Reduce energy consumption.Decrease pollution.Environmental friendly.Resource depletion in a slow rate.The disadvantages includes:
High cost.Recycled products are often of low quality.Thus, the correct option is b.
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Will you find different nitrogenous bases in humans and other animals?
Answer:
No
Explanation:
The universality of the genetic code refers to how the codons for amino acids are always the same in almost all species. Amino acids have corresponding nitrogenous bases in pairs of three called a codon. so to have the same amino acids, all species would need the same nitrogenous bases.
Alion eats the meat of a buffalo. How do the molecules in the buffalo most likey act as building blocks for the
lion?
Answer:
ATP production
Explanation:
When the lion eats the buffalo, the eaten material is broken down to give ATP (Adenosine Triphosphate), which in turn helps the body in its metabolic processes like the synthesis of carbohydrates and proteins, which act as a building block for the lion.
Which of the following statements would be an inference, NOT an
observation?
Answer all 3 for brainliest im giving alot of points
Answer:
17. C " TAAGCTG". It would be the replication strand because A always pairs with T and C always pairs with G, so replication strands just have the opposite base as the original strand
18. Transcription is the name given to the process in which DNA is copied to make a complementary strand of RNA. RNA then undergoes translation to make proteins. The major steps of transcription are initiation, promoter clearance, elongation, and termination.
19. Straight hair is controlled by a recessive allele because as you can see the one where is not shaded is the one that has the most. There are only 1 shaded circle or square, out of the 12 other circles or square that is not shaded. This means that it is the recessive allele because people are less prone to getting straight hair, as you can see in that diagram.
Hope this helped!
Have a supercalifragilisticexpialidocious day!
#3.) Which of the following is true about the carbon cycle?
a
Combustion reduces carbon dioxide gas.
b
Respiration uses carbon dioxide gas.
с
Decomposition recycles the carbon compounds in nature and produces carbon dioxide.
d
Photosynthesis removes carbon dioxide from the atmosphere and makes organic matter.
how is the energy liberated from the atp molecule?
Answer:
When one phosphate group is removed by breaking a phosphoanhydride bond in a process called hydrolysis, energy is released, and ATP is converted to adenosine diphosphate (ADP). ... Likewise, energy is also released when a phosphate is removed from ADP to form adenosine monophosphate (AMP).
How can the Nimitz ship float
