Answer:
Heart and artery
Explanation:
It consists of the Heart and the blood vessels running through the entire body.
Identify the graph that best represents a population to gree exponentially until it’s carrying capacity was met
Where’s the graph? Lemme know?
Graph C.
That goes up and then stops in the middle going in a straight line.
Important roles of bacteria include _____.
decomposition
significance in commercial products such as cheese and yogurt
sewage disposal
nitrogen fixation
the answer is decomposition.
Answer:
A. decomposition
B. significance in commercial products such as cheese and yogurt
C. sewage disposal
D. nitrogen fixation
Explanation:
took the test and got 100
What organisms belong to the phylum molluska
Answer:
Molluscans are very diverse animals and form an important part of the ecosystem in the world. Snails, octopuses, squids, oysters, clams etc. all belong to Phylum Mollusca.
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Which kingdom is made up of mostly, but not exclusively, unicellular organisms?
Plantae
Archaea
Animalia
Protista
Answer:
The correct answer would be protista.
Explanation:
The kingdom Protista includes the unicellular eukaryotes. Protists are a diverse kingdom of living beings that are mostly unicellular but some are multicellular. These multicellular organism does not show highly specialized tissues organization.
They show similar characteristics to animals, plants or fungi. Protists can be heterotrophic or autotrophic such as algae, kelp, Paramecium.
Thus, the correct answer is Protista
Marcia is given an incomplete chemical equation that includes the number of nitrogen atoms present in the products of the reaction. How can she conclude that the reaction started with three nitrogen atoms?
Answer:
She can conclude that the reaction started with three nitrogen atoms because she can be based in the law of conservation of matter which states that the amount of matter in a system is conserved: there were three atoms of nitrogen in the reactants and they produced three atoms of nitrogen.
Explanation:
In science, a law is a general statement that explains a large number of observations. One law that provides the foundation for understanding in chemistry is the law of conservation of matter: it states that in any given system that is closed to the transfer of matter (in and out), the amount of matter in the system stays constant, or in other words, the amount of matter in a system is conserved.
So, in this case, for Marcia to conclude that the reaction started with three nitrogen atoms, she can be based in the law of conservation of matter, and because the matter of that system is conserved, there were three atoms of nitrogen in the reactants and they produced three atoms of nitrogen.
Answer:
There would have to be three nitrogen atoms in the products. The law of conservation of matter states that the amount of substance before a reaction occurs should be the same as the amount of substance after the reaction.
Explanation:
the endosymbiotic theory evolution states that organelles is eukaryotic cells are derived from bacteria which statement is the strongest evidence in support of the endosymbiotic theory of eukaryotic evolution?
A. Eukaryote organelles are similar in size and shape to bacteria
B. Eukaryote organelles stop functioning outside of a plant cell
C. Eukaryote organelles can reproduce through sexual reproduction
D. Eukaryote organelles contain DNA similar to bacterial DNA
Answer:
D, eukaryote organelles contain dna similiar to bacterial dna
Explanation:
The strongest evidence in support of the endosymbiotic theory of eukaryotic evolution is that eukaryote organelles contain DNA similar to bacterial DNA. This is observed in the case of mitochondria and chloroplasts, which have their own DNA that is similar to bacterial DNA. This suggests that these organelles were once free-living bacteria that were engulfed by larger cells and became symbiotic.
Explanation:The strongest evidence in support of the endosymbiotic theory of eukaryotic evolution is that eukaryote organelles contain DNA similar to bacterial DNA. This is observed in the case of mitochondria and chloroplasts, which have their own DNA that is similar to bacterial DNA. This suggests that these organelles were once free-living bacteria that were engulfed by larger cells and became symbiotic.
Furthermore, these organelles also have their own ribosomes, which are similar to bacterial ribosomes, and they divide independently within the cell, just like bacteria. These characteristics further support the idea that mitochondria and chloroplasts were originally bacterial cells that became integrated into eukaryotic cells.
Although other options mentioned in the question are true to some extent, the presence of bacterial DNA in eukaryote organelles is the most compelling evidence for the endosymbiotic theory.
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Which of these best describes genetic drift?
A) The movement of alleles between population
B) Random fluctuations in the gene frequencies within a population
C) A planned method to reduce the number of inferior genes in a population
D) The combining of alleles to create more genetic variations within a population
it's b ramdom fluctions in the gene fequinces within a poplation
Answer:
B) Random fluctuations in the gene frequencies within a population
Explanation:
Genetic drift is one of the evolutionary process that deviated the population from Hardy–Weinberg equilibrium. Genetic drift refers to the change in the allele frequency of population due to chance event alone. It does not include natural selection or gene transfer. It brings out random change in allele frequency in the population. Genetic drift is more effective in a small breeding population.
Complete these sentences by Matching the phrases.
Answer:
The Doppler effect- 3
Comic Microwave Background Radiation- 4
Particle Accelerators- 1
The Big Bang Theory- 2
Explanation:
Answer:
Explanation:
1). Scientists recreate early conditions of the universe using
Particle accelerates.
2). The prevailing idea about the beginning of the universe is called as
The Big Bang theory.
3). The speed of stars can be measured using
the Doppler's effect.
4). The heat left over from the beginning of the universe is
Cosmic microwave background radiation.
Ducks have waterproof feathers that help maintain their body temperature. Which body system are these characteristics a part of?
A.
reproductive
B.
respiratory
C.
immune
D.
endocrine
E.
integumentary
Answer:
E. integumentary
Explanation:
The integumentary system is consisted of hair, feathers, skin, glands, nerves, nails, with its main function being to act as a protective barrier of the body from the outside world. It helps in regulation of the body temperature, retaining body fluids, elimination of waste products, and protection form diseases. The waterproof feathers of the ducks are a nice example of this. They manage to keep their bodies warm in the water, thus helps them a lot in the regulation of the body temperature by being a barrier between the body and the water.
E: integumentary. hope this helps
Thanks to the development of transgenic plants, much of the food we eat has been altered so that it tastes better, looks better, and lasts longer. This change in agricultural production has lead to new careers in
A)embryology.B)forensics.C)genetics.D)geology.
Answer:
i believe the answer would be genetics since you are altering the DNA of the plants
The graph shown is a velocity-time graph of an object. What is the acceleration of the object from 6.0 to 10.0 seconds?
Answer:
1.8
Explanation:
The acceleration is given by the slope of the line. The middle section is the only section where the object is accelerating and the slope yields 1.8 m/s2.
Answer:
1.8 m/s^2
Explanation:
Which part of the brain is indicated by the arrow below?
Cerebrum
Cerebellum
Pons
Medulla oblongata
Answer: Cerebrum because it is the largest part of the brain
If you were digging a well, what would you need to dig down far enough to reach?
A. a cave
B. a karst
C. porous rocks
D. the water table
Answer:D.the water table
Explanation: when wells are dug , they are dug to the point where all the pore spaces are completely saturated so that they can be filled up with water, when the water table is reached.
This is where groundwater fills the sediments and porous rocks or cracked rocks.
Above the water table we find the unstaturated zone which is called zone of aeration since it is made up of soil that contains oxygen.
The height of water table depends on the land surface above it. The source of groundwater is rain , during precipitation water get seeped through soil surface . Changes in precipitation are responsible for the level of groundwater.
Which organelle is responsible for producing the energy for cellular processes ?
Can you take a picture of the whole screen please, I don’t know that the organelle letters are
Match each role within an atom to its correct subatomic particle
Answer:
1 = identity of the atom
2 = acts as a buffer
3 = chemical behavior of atom
Explanation:
The atomic number seen on the periodic table is because of the number of protons. Electrons are lost and gained in chemical reactions. Neutrons are neutral, but do add mass to the nucleus/atom.
Answer:
1. Identity of the atom, matchs with Proton.
2. Chemical behaviour of atom, matchs with Electron.
3. Acts as buffer between protons in nucleus to help stabilize nucleus and add mass to atom, matchs with Neutron
Explanation:
Protons are subatomic particles located in the nucleus, that has a possitive charge and that never change (number of protons remains always the same for a particular element). Because of this property are considered the identity of an atom and defines a constant variable called atomic number.
Electrons are another kind of subatomic particles that are located outside the nucleus and does not contribute with significan amount of mass to the atom. This kind of particles, freely moves around the nucleus and are responsibles for the interaction and formation of bonds between elements (it means of their chemical behaviour).
Neutrons are also located in the nucleus and signifficantly contributes to the total mass of an atom. The sum of neutrons and protons constitute the mass number of an atom.
Which type of reproduction involves only one parent?
Answer: Asexual reproduction involves one parent and produces offspring that are genetically identical to each other and to the parent.
Explanation:
What technique enables scientists to determine if this really is the body of jimmy hoffa
Teeth bones fingerprints foot
The technique that enables scientists to determine if this really is the body of Jimmy Hoffa is known as DNA fingerprinting.
What is DNA fingerprinting?DNA fingerprinting may be defined as a type of laboratory technique that is significantly utilized in order to determine the probable identity of a person on the basis of nucleotide sequences of certain regions of human DNA that are unique to individuals.
This laboratory technique is employed by forensic scientists in order to assist in the identification of individuals or samples by their respective DNA profiles. So, when it comes to determining the body of Jimmy Hoffa, it would definitely requires a technique of DNA fingerprinting.
Therefore, the technique that enables scientists to determine if this really is the body of Jimmy Hoffa is known as DNA fingerprinting.
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The blood passes through our body in a sytem called the circulatory system. We have a double circulatory system. Why is it called this and what are the two pathways that blood takes?
Answer:
We call it
Double circulation bcoz their are 3 circulation exist between heart, lungs and body organs.
EXPLANATION :
Flow of blood is left to right
1. Pulmonary circulation
Right ventricle -pulmonary artry - lungs - pulmonary veins - left artria
2. Systemic circulation
Left ventricle - systemic artry - body organs - systemic veins- right artria
A _______________ is a cell containing two complete sets of chromosomes, one from each parent.
Germ line cells are haploid, which means they contain a single set of chromosomes. In diploid cells, one set of chromosomes is inherited from the individual's mother, while the second is inherited from the father. Humans have 46 chromosomes in each diploid cell.
Hope this helps :)
A somatic cell or a diploid cell is a cell which contains two complete sets of chromosomes, one from each of the two parents.
What is a somatic cell?Somatic cells are the cells in the body other than the germ cells or gametes such as sperm and egg cells. In humans, somatic cells are diploid in nature. A diploid cell contain two sets of chromosomes, from which one set of chromosome inherited from each parent.
A diploid cell is a term which refers to the presence of two complete sets of chromosomes in an organism's cells. Humans, animals, and many higher plants belonging to gymnosperms and angiosperms are diploid organisms, and most of the cells in the body contain 23 chromosomes pairs that is 46 chromosomes.
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seasons occur because the earth revolves and is on its axos
Answer:
We have seasons because the earth is tilted (wonky) as it makes its yearly journey around the sun. The Earth's axis is tilted at an angle of 23.5 degrees. This means that the Earth is always "pointing" to one side as it goes around the Sun.
Explanation:
Which weighs more: a pound of feathers or a pound of lead? Explain.
A pound of feathers and a pound of lead, both weigh the same.
How is one pound of lead equal to one pound of feathers?One pound is always equal to a pound irrespective of the material. This concept literally holds good on any material such as iron, cotton, steel, etc
People may wonder that feather is very much less dense than lead.But to equate lead to feather, more quantity of feather may be required but ultimately it also reaches a point where it will way a pound.So, when the weight of feather and weight of lead is compared on a weighing scale, they will way the same.To learn more about weight as a physical quantity, refer:
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Which statement is correct about wind turbines?
A/ They create mechanical and electrical energy.
B/ They transform wind energy to electrical energy.
C/ Their total energy decreases when electricity is produced.
D/ Their total energy increases when electricity is produced.
Answer:
b
Explanation:
B should be your answer
which of the following joins two pieces of DNA together
DNA ligase is a DNA- joining enzyme. if two pieces of DNA Has matching ends, ligase can link them to form from a single, unbroken molecule of DNA. in DNA cloning, restriction enzymes and DNA ligase are used to insert genes and other pieces of DNA plasmids.
DNA Ligase joins two pieces of DNA together
What is DNA ligase ?DNA ligase is a DNA-joining enzyme.If two pieces of DNA have matching ends, ligase can link them to form a single, unbroken molecule of DNA.As synthesis proceeds, an enzyme removes the RNA primer, which is then replaced with DNA nucleotides, and the gaps between fragments are sealed by an enzyme called DNA ligase.Learn more about DNA Ligase here:
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An example of a single gene trait is
A) beak size in the Galápagos finches.
B) fur color in cats.
C) length of snails.
D) bands on a snails shell.
Please respond ASAP, thank you.
Answer:
the answer is c
Explanation:
What do scientists use to describe the climate of an area?
types of plants and animals
location and wildlife
precipitation and temperature
ages of the largest forest plants
Answer:
C
Explanation:
Though the wildlife is based on the weather (you wouldn't see a polar bear in the rainforest), the weather is not based on the wildlife. If you put a polar bear in the rainforest, it won't make it a tundra. The ages of the plants are also completely irrelevant.
PLS ANSWER THESE QUESTIONS WILL MARK BRAINLIEST
Answer:
Explanation:
This is process of mitosis in which there are 4 process simply called PMAT or prophase metaphase anaphase and telaphase
All cells have some universal features. Which of these is a universal feature found in every single cell on earth?
A. Ribosomes B. Mitochondria C. Cell wall D. Golgi apparatus
Answer:
Ribosomes
Explanation:
Universal features of all cells are features that are shared by all cells whether the cells are prokaryotic or eukaryotic. These universal features include; ribosomes, plasma membrane, DNA and cytoplasm.Ribosomes are organelles that are responsible for the synthesis of proteins through translation process.DNA is the genetic material in a cell. Plasma membrane is the outer covering of cell that regulates the movement of materials in and out of the cells.Cytoplasm on the other hand is the part of a cell where all cellular structures are suspended.All living things on Earth contain ribosomes, which are basic and universal cellular structures. Therefore, the correct option is A.
These small RNA and protein-containing organelles are essential for protein synthesis. They serve as the site where genetic data from DNA is translated into useful proteins, which are important for many cellular activities. Both prokaryotic (such as bacteria) and eukaryotic (such as plant and animal cells) cells contain ribosomes. The primary function of ribosomes is conserved in all organisms, despite some differences in their structure and organization, which emphasizes their vital importance in the process of protein synthesis and in the maintenance of life.
Therefore, the correct option is A.
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Why are there many niches of species in one mountain?
A. The leeward and wayward sides of the mountain have different elevations. B. There's no water on the top of a mountain to support life. C. The elevation changes of the mountain cause different climates. D. The biotic factors on the mountain force interspecific competition.
Answer:
b
Explanation:
Answer: Option D
Explanation:
In interspecific competition two species use the same resource that is found at a particular place in a limited amount.
A niche is can be defined as a place which defines a set of conditions, resources and interactions it needs.
This states that one mountain can have many niches as more than two species compete for the same biotic resource.
Describe homeostasis. How does the cell membrane maintain a stable internal environment?
Homeostasis involves maintaining balance of several factors that make a cell healthy. The job of the cell membrane is to regulate the passage of materials into and out of the cell. In order for any materials to go in or out of the cell, they must cross through the cell's membrane.
Hope this helped
- Danielle xo
homeostasis is the internal balance of the human body. the cell membrane maintains a stable internal environment by balancing the pH, temperature, glucose, and water balance
Does the following statement describe a function of DNA, a function of RNA, a function of both DNA and RNA, or a function of neither DNA nor RNA? It stores in the nucleus the information a cell needs to make its proteins with the right orders of amino acids.
DNA
RNA
both DNA and RNA
neither DNA nor RNA
Answer:
DNA
Explanation:
Answer:
DNA
Explanation:The DNA stripped of its protein is known to carry genetic information and to determine details of proteins produced in the cytoplasm of cells; the proteins in nucleoprotein regulate the shape, behaviour, and activities of the chromosomes themselves. The other major nucleic acid is ribonucleic acid (RNA). (can i have brainliest i have a test coming and i need points to study )