Answer:
Cells have different shapes because they do different things. The shapes of cells have evolved to help them carry out their specific function in the body, so looking at a cell's shape can give clues about what it does. Neurons are cells in the brain and nervous system.
Explanation: Brainlest plz?
Explanation:
Cells have different shapes because they do different things. ... The shapes of cells have evolved to help them carry out their specific function in the body, so looking at a cell's shape can give clues about what it does. Neurons are cells in the brain and nervous system.
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
Is Mitosis is very similar to the first division in meiosis?
true or false?
Answer:
True
Explanation:
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
#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.
CAN SOMEONE HELP PLS (8th grade science)
Answer:
the answer A i think
Explanation:
What would need to happen in order for you to maintain your immune cells throughout your lifetime?
Answer:
Immunity is one of the most concern topic of human health now a days. So, to maintain our immune cells throughout our lifetime, we can follow the following tips:
Eat a healthy diet: It is important to take nutrient-rich diet so that our immune system can fight against the disease causing bacteria or virus and keeps us healthy enough.
Get active: Regular exercise and keeping ourselves active keeps our muscles and body fit and provide energy to our immune cells.
Get plenty of sleep: Sleeping is one of the way to stay healthy but it should be limited. Its important to give rest to your body so for that its important to take 6 to 7 hrs of sleep per day.
Maintain body weight: overweight can weaken our immune cells, so important to maintain our body weight with physical activity and eating a healthy diet that will keep our immune cells throughout our lifetime.
Quit smoking and other harmful habits: Smoking makes our immune cells weak and slowly our body get prone to diseases. So, to keep immune cells healthy one should quit smoking.
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.
Which model shows how an image appears to a person when they look through a concave lens
Answer:
A
Explanation:
Object appears smaller to the eye
Model A shows how an image appears to a person when they look through a concave lens.
What is a concave lens?A concave lens is a type of optical lens that has a curved inward surface, causing light rays to diverge after passing through it. It is also sometimes called a diverging lens. The opposite of a concave lens is a convex lens, which has a curved outward surface and causes light rays to converge.
In optics, the shape of a lens determines how it affects the path of light rays passing through it. A concave lens spreads out light rays, making them diverge, and the resulting image is usually smaller, inverted, and appears to be located behind the lens. Concave lenses are often used in applications where it is necessary to reduce the size of an image, such as in microscopes, cameras, and other optical devices.
It's important to note that the properties of a concave lens depend on its size and shape, as well as the distance of the object from the lens and the type of light being used. By manipulating these parameters, engineers and scientists can design concave lenses with specific optical properties for different applications.
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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 the following statements would be an inference, NOT an
observation?
help please quickly i’ll mark brainlist
Answer:
Dextrose
Explanation:
.
Proteins in eukaryotic cells which control the progression of cells through the cell cycle are –
cyclins
recyclins
cytokines
cytochromes
Answer:
cyclins
Explanation:
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.
(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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Students are observing an aquatic plant. They understand that the bubbles
they see rising from the cut stem of the plant are the gases produced
during photosynthesis. Which of the following observations provides the
best evidence that light is the source of energy for photosynthesis? *
Students are observing an aquatic plant, and from that, they get to know about the photosynthesis process and they observe that in the light of the sun, the bubbles intensify, and when the sun goes down, the bubbles lessen, that is the last option.
What is the significance of photosynthesis in aquatic plants?Photosynthesis takes place in plants, algae, and some bacteria, and they can make their own food using energy from sunlight and photosynthesis provides the energy source, which is the basis of the food chain. Photosynthesis is essential for regulating the Earth's climate, producing oxygen, and maintaining many important ecological cycles in ecosystems.
Hence, students are observing an aquatic plant, and from that, they get to know about the photosynthesis process and they observe that in the light of the sun, the bubbles intensify, and when the sun goes down, the bubbles lessen, that is the last option.
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Which statements correctly describe a cell after meiosis I? Check all that apply.
Daughter cells are gametes and ready for fertilization.
Two daughter cells have been created from one parent cell.
Daughter cells are genetically identical to the parent cell and one another.
Daughter cells contain sister chromatids for half the chromosomes of the parent cell.
Daughter cells still need to go through another meiotic division to separate sister chromatids.
Answer:b,d,e
Explanation:
Ill give brainliest... its currently 12:20 am and im too tired to re answer this "correctly". Please help a human out
Many pine trees grow in the taiga, the largest habitat in the world. Using credible sources, such as NASA, research the typical climate conditions in the taiga. Explain why the structure of pinecones helps ensure successful reproduction in the taiga.
NASA can research the typical climate condictions in the world. The structure of pinecones and what they are made of can be classified depending on the type of tree it came from. For example, moss and fungus that is found on the structure of the pinecone can be tested and can help ensure successful reproduction of the certain species. Finally, it can be reproduced depending on the environment the tree was raised in.
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.
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.
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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the concentration of carbon dioxide in the atmosphere has been increasing for many years, how might this increase affect photosynthesis
Answer:
the answer is
Carbon dioxide concentrations are rising mostly because of the fossil fuels that people are burning for energy.Increasing the light intensity increases the rate of photosynthesis, until some other factor a limiting factor becomes in short supply. At very high light intensities,photosynthesis is slowed and then inhibited, but these light intensities do not occur in nature.
Explanation:
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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How can the Nimitz ship float
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.
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Have a supercalifragilisticexpialidocious day!
Is mashing something a chemical change
Answer:
yes it is.... because the chemical has now changed it form
Explanation:
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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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).
will give another cookie if solved
Answer:
Oh this is Amplify! GREAT! Your answer is B.
Explanation:
answer these for brainlist and extra points!! ♥️
