Answers
Answer:
1. Chloroplasts and cell wall
2. Plant cells are square or rectangular, while animal cells are round.
3. Absorbs sunlight to carry out photosynthesis
4. To store water
Answer:
1. Cell wall and chloroplasts
2. Plant cell have cell wall around cell membrane which determines shape of plant cell and In animal cells cell membrane is outermost structure which is semi fluid and elastic, can help to cell in changing shape
3. produce energy through photosynthesis
4. functions to hold various solutions or materials.
Explanation:
Related Questions
Sheryl is observing ovarian slides taken from a female ape. All the cells show crossover chromosomes. What is this stage?
A.
meiotic prophase I
B.
meiotic prophase II
C.
meiotic metaphase
Answers
The ovarian slides taken from the female ape will show crossover chromosomes in (A) meiotic prophase I.
Crossing over is the event that occurs during Prophase of Meiosis I. During this event, the exchange of genetic material occurs between two non-sister chromatids of two homologous chromosomes. This occurs to produce the recombinants having genotype different from both the parents.
Meiotic Prophase I is the longest and most complex phase of Meiosis. The phase is further divided into stages. These are: Leptotene. Zygotene. Pachytene, Diplotene and Diakinesis. Many of the crucial events of Meiosis like synapsis formation, recombination, etc. occur in this phase.
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If the genetic code consisted of codons with 4 nucleotides, how many different codons could there possibly be?.
Answers
If the genetic code consisted of codons with 4 nucleotides, there could be 256 different codons possible.
The genetic code is a set of rules that living cells use to convert information encoded in genetic material into proteins. Each gene's code employs various combinations of the four nucleotide bases of DNA — adenine (A), cytosine (C), guanine (G), and thymine (T) — to spell out three-letter "codons" that specify which amino acid is required at each position within a protein.
A codon is a unit of three adjacent nucleotides that codes for an amino acid. Codons, which are three-letter nucleotide chains, make up the genetic code. Each codon represents a single amino acid.
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this virulence factor is common to many members of the enterobacteriaceae and it allows them to inject proteins directly into the host cell: group of answer choices porins. pili. type iii secretion system. fimbriae. a glycocalyx.
Answers
Many species of the enterobacteriaceae share the type iii secretion system, which enables them to inject proteins right into the host cell.
What characteristics make Enterobacteriaceae virulent?The Enterobacteriaceae antigenic structures, the O, H, and K antigens, and the polysaccharide capsules are additional defined bacterial virulence factors. Less research has been done on the virulence factors important for urinary tract infections in Gram-positive pathogens.
What constitutes E. coli's primary virulence factors?We may categorize E. coli pathotypes into four primary virulence classes: colonization, fitness, toxins, and effectors; each is composed of a number of distinct virulence factors with a clear purpose and activity (Table 1). It's important to highlight that several enteric and extraintestinal pathotypes of E.
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a mutant dna polymerase that increases the frequency of strand slippage would increase the frequency of which type of mutation?
Answers
The frequency of triplet-repeat expansion would rise in the presence of a defective DNA polymerase that boosts strand slippage.
What is DNA polymerase?A DNA polymerase belongs to a group of enzymes that catalyzing the synthesis of Dna strands using nucleoside triphosphates, which are the basic building blocks of DNA. These enzymes, which are necessary for DNA replication, typically function in groups to split one single original DNA duplex into two identical DNA duplexes. One nucleotide at the a time, DNA polymerase inserts nucleotides to a DNA strand's three primary (3')-end. DNA polymerases are needed to duplicate a cell's DNA each time it divides in order to send a replica of the original DNA molecule to each daughter cell. This is how genetic information is transmitted down through the generations.
These enzymes help the chemical process to happen.
Deoxynucleoside Triphosphate + DNAn ⇌ Pyrophosphate + DNAn+1.
What does a DNA polymerase do?A dual DNA molecule is duplicated to two identical DNA molecules during the dna replication Process, which is carried out by DNA polymerase. With the help of the polymerase chain reaction, generally known as PCR, scientists have been able to duplicate DNA molecules inside test tubes. DNA polymerase alpha (Pol ), DNA polymerase delta (Pol ), & DNA polymerase epsilon (Pol ) are at least 3 DNA polymerases needed in eukaryotic genome replication (1). By creating an RNA/DNA hybrid primer, Pol starts the synthesis of both the leading & lagging strands of DNA.
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In a prokaryotic cell, it's DNA is contained in the nucleus. TrueFalse
Answers
The answer is False.
Prokaryotes do not have nucleus.
A __________ is a membrane covered structure that contains all of the materials necessary for life
THANKS!
Answers
Answer:
a cell
Explanation:
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hope it helps
individual organism can adaptTrue, But it has to increase their fitnesssometimes, it depends on where they are located if the adoption is helpful or notfalse, only a population can adapt
Answers
Organisms can adapt to different environments, however, this usually occurs over generations and at the population level. At the level of the individual, an example is mutations, in which the offspring may have different characteristics from the progeny. However, these adaptations of the offspring will either be detrimental or give an advantage depending on the environment in which it is
Because these changes occur gradually over generations, individual organisms cannot increase their fitness on their own. And although there are special cases in which an organism can adapt to environmental changes through a phenomenon called phenotypic plasticity, this is not common in all species and is not due to a genetic change in the individual. Therefore, the answer would be B (sometimes, it depends on where they are located if the adaptation is helpful or not).
What was the reason for Mendel to use pea plants in his experiments?
Answers
Answer:
He chose peas because they had been used for similar studies, are easy to grow and can be sown each year.
What sentence best supports the staternent that hormones are involved in the regulation of homeostasas? The hormone melatonin induces sleep and its production is slowed by exposure to light. The hormone cortisol suppresses the immune system and is produced when the body is under stress. The hormone oxytocin promotes labor contractions of the uterus during childbirth. The hormone erythropoeitin increases the production of red blood cells when oxygen levels are low.
Answers
The sentence that supports the statement that hormones are involved in the regulation of homeostasis is: The hormone erythropoietin increases the production of red blood cells when oxygen levels are low.
Homeostasis is the condition of maintaining the adequate conditions inside the living body that are most suitable for its survival. It is the state of steady internal, physical, and chemical conditions. The correct temperature, adequate oxygen concentrations, adequate fluids inside the body are the examples of homeostasis.
Erythropoietin is the hormone produced by the kidney cells that enhances the production of RBCs in the body. This in turn enhances the oxygen concentration inside the body.
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What is the main way that fossil fuel use impacts the environment?A. water useB. invasive speciesC. global climate changeD. soil degradation
Answers
During the burning of fossil fuels, a greenhouse gas is discharge into the air which trap the heat in the atmosphere. This results to global warming.
Answer - C. global climate change
What level of transcription would you predict for a gene whose promoter is heavily methylated?.
Answers
Low transcription if promoter is heavily methylated.
In genomics, transcription is the process of creating an RNA copy of a gene's DNA sequence. This copy, known as messenger RNA (mRNA), transports the protein information encoded in the gene's DNA. A gene cannot be used to make a protein in a cell if it is not transcribed. If a gene is transcribed, it will almost certainly be used to produce a protein (expressed). Generally, the more a gene is transcribed, the more protein is produced.
Gene expression is specifically regulated on two levels. First, transcription is controlled by limiting the amount of mRNA produced by a specific gene. The second level of control comes from post-transcriptional events that regulate mRNA translation into proteins.
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Write a paragraph describing how muscles and bones work together to create movement. Be sure to include the following words in your paragraph.
Tendon(s), ligament(s), cartilage, bone(s), muscle(s), skeletal system, muscular system.
Answers
Musculoskeletal system works to help you with diverse body movement. human body have206 bones and more than 600 muscles, connected by ligaments, tendons and soft tissues.
Bones support your body, protect organs and tissues, store calcium and fat and produce blood cells. Cartilage is connective tissue, cartilage cushions bones inside your joints, spine and in your ribcage. Bones together makes joints these joints have a large range of motion .Muscle is made of thousands of stretchy fibers. they helps to move, sit upright and stand still. Ligaments are tough collagen fibers, ligaments connect bones and help stabilize joints. Tendons connect muscles to bones tendons are tough but not very stretchy.
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Which is most likely to cause groundwater pollution?leaking underground storage tankacid precipitationdeforestationparticulate matter
Answers
Deforestation can lead to runoff of water, it does not imply contamination.
Particulate matter of natural origin would be processed by decomposers, increasing nutrients in the soil and in groundwater (if leaching takes place).
Acid precipitation can change pH and mineral composition in the soil, It does not have a direct impact on groundwater.
Answer: leaking underground storage tank is a way of pollution that definitely have an impact on groundwater.
where would you expect hydrophobic amino acid residues to be found in a completely folded protein? where would hydrophilic residues be found?
Answers
Hydrophobic amino acids are frequently present in the interior of proteins that are found in the watery environs of cells.
What is hydrophilic and how will it work?Non-polar molecules make up hydrophobic compounds, which resist water bodies while drawing in other neutral molecules including non-polar solvents. Alkanes and other types of lipids are examples of these compounds.
What causes water to be hydrophobic?The hydrophobic interactions are caused by these two characteristics of water, namely polarization and its capacity to form potent hydrogen atoms with other polar molecules. Water's polarity allows it to easily form hydrogen bonds with other polar molecules, which allows it to dissolve other polar molecules.
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If an organism has a diploid number of 6 chromosomes, how many different combinations of maternal and paternal chromosomes are possible in its gametes?.
Answers
Eight distinct pairings both sister chromatids are possible in an organism's gametes if it contains six diploid chromosomes.
Why do gametes matter?
Gamtes are a term used to describe an organism's reproductive cells. the cells is another name for them. gametes are also known as sperm for males and oocytes or egg cells for females. gametes are composed of haploid cells, which contain only one copy of each chromosome per cell.
Are there gametes in humans?
The pair of chromosomes in gametes, which are also known as reproductive cells, is also referred to as haploid. human gametes is haploid cells with 23 chromosomes, one of which is found in each of the chromosome pairs found in diplod cells.
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how can recycling rubber tires into materials that make track surface affect the use of natural resources
Answers
Recycling rubber tires into materials that make track surface affect the use of natural resources by maximizing it.
What is Recycling?This is referred to as the process in which waste materials are converted into new materials such as in this scenario in which rubber tires are used to make track surfaces. This process helps to reduce the degree of pollution in the ecosystem thereby making it a safer place to live.
Recycling ensures that materials are used for other purposes and is not wasted which therefore maximizes its use and is therefore how it affects the use of natural resources.
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NEED THIS DONE NOW. URGENT.
Describe a theory about where the moon come from. Do you think there's enough evidence?
Answers
The Apollo missions brought back over a third of a tonne of rock and soil from the Moon.
'When the Apollo rocks came back, they showed that the Earth and the Moon have some remarkable chemical and isotopic similarities, suggesting that they have a linked history,' says Sara.
'If the Moon had been created elsewhere and was captured by the Earth's gravity we would expect its composition to be very different from the Earth's.
'If the Moon was created at the same time, or broke off the Earth, then we would expect the type and proportion of minerals on the Moon to be the same as on Earth. But they are slightly different.'
The minerals on the Moon contain less water than similar terrestrial rocks. The Moon is rich in material that forms quickly at a high temperature.
'In the seventies and eighties there was a lot of debate which led to an almost universal acceptance of the giant impact model.'
Lunar meteorites are also an important source of data for studying the origins of the Moon.
'In some ways meteorites can tell us more about the Moon than Apollo samples because meteorites come from all over the surface of the Moon,' adds Sara, 'while Apollo samples come from just one place near the equator on the near side of the Moon.'
In trisomy 21, an error during meiosis results inthree copies of Chromosome 21, leading to developmental deficits.three copies of Chromosome 19.the normal two copies of Chromosome 21, and no developmental deficits.a point mutation.
Answers
By definition, a trisomy is an aneuploidy in which a person has three copies of a chromosome instead of two. Therefore, a trisomy of chromosome 21 is an extra chromosome to the existing two copies of chromosome 21.
We can conclude that the correct answer is:
Answer:Three copies of Chromosome 21, leading to developmental deficits.
Determine the number greater than 19 and less than 34 that is divisible by 6 and 10. (1 point)
24
O 20
O 30
O 60
Answers
Answer:
30
Explanation:
Its 30 because 30 is divisible by 10 and 6.
30 divide 10 = 3
30 divide 6 = 5
Question 1: 2.
Question 2: 30.
Question 3: 29.
Question 4: 27.
Question 5: neither prime nor composite.
Brainliest appreciated!
please help im confused
Answers
Answer:
see explanation
Explanation:
1. Margaret is wondering why her African violets aren't blooming
2. She discovered that her violets need nutrients, watering, and lots of sunlight
3. She was already following the salesperson's instructions so she decided maybe her soil was low in nutrients. She buys her plants nutrients in specific amounts.
4. After giving one of her plants' nutrients, and giving the other none she found out that the nutrients are exactly what her plants needed
5&6. I can't figure out
7. Buying her plants some fertilizer (i think)
8. Low nutrients in the soil.
9. The African violets needed fertilizer in order to produce flowers.
10. Feed the rest of her plants, and continue taking precise care of the violets.
Sorry if any of these are wrong!
help pls. i’ll give u brainliest fr
Answers
Answer: Covalent Bond
Explanation:
When carbon atoms bond with each other, it makes a covalent bond.
which of the following is not a necessary life function? select one: a. nutrients b. reproduction c. metabolism d. movement
Answers
Nutrients are not a necessary life function as it is not directly necessary to maintain the life of the individual organism. It only helps in the breakdown of food to give them energy.
What are the life functions?
Living organisms are systems made from cells and are capable of life functions such as organization, metabolism, responsiveness, movements, transport, respiration, excretion, digestion, responsiveness, growth, regulation, differentiation, synthesis, and reproduction.
All living organisms have certain characteristics that distinguish from non-living forms. All of these processes are interrelated. From smallest cell to a complete body system do not work independently.
Metabolism is the sum total of all the chemical reactions occurring in the body. One of the reactions includes catabolism which helps to break complex substances into simpler building blocks. Another phase of metabolism is anabolism in which complex substances are formed from simpler ones. Responsiveness or irritability is concerned with detecting changes in the internal or external environments and reacting to that changes.Differentiation is a developmental process by which unspecialized cells change into specialized ones with distinctive structural and functional characteristics.Digestion is the process of breaking down complex ingested foods into simpler molecules that can be absorbed into the blood.Hence nutrients are not directly a necessary life function.
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How is the law of conservation of matter observed in making pizza dough?
Answers
The law of conservation of matter states that matter can neither be created nor destroyed in a physical or chemical reaction. Similarly, the chemical changes which occur during the formation of a pizza dough follow the same law of conservation of matter.
The law of conservation of matter also suggests that matter can be transformed from one form to another. Likewise, the chemical changes that take place during the preparation of a pizza dough such as rising of dough obeys the law of conservation of matter.
During dough preparation, salt, yeast and warm water are added to the flour and mixed thoroughly. As a result the yeast digests complex sugars and liberates carbon dioxide, which enables the dough to rise.
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Roberto creates an animation titled “Flying through an Atom.” The animation makes it seem as if the viewer passes all the way through an atom, starting from one side, then through the atom’s center, and then leaving through the other side.
What is the best description of the order of events in the animation?
Answers
he going there the atom seeing everything in it until the end form the start
what is the relationship between tissues, organs, and organ system?
Answers
Answer:
.
Explanation:
Cells make up tissues, tissues make up organs, and organs make up organ systems.
during the karyotyping procedure, the cell pellet is suspended in a solution which causes the cells to swell and the chromosomes to spread out from each other. this type of solution is called a(n) solution.
Answers
To enlarge and the chromosomes to disperse from one another. The term "hipotonica solution" refers to this kind of solution.
In the human body, what is a chromosome?Long DNA strands are carried by chromosomes, which are found in the nucleus of cells. The substance that contains genes is DNA. The foundation of the human body is it.
What do you name a chromosome?The DNA molecule is bundled into chromosomes, which are thread-like objects located in the nucleus of every cell. The proteins known as histone proteins that stabilize that organization of the each chromosome are formed of DNA that is tightly wound lots of times.
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A RESEARCHER, WHILE ISOLATING AN ENZYME, FINDS AN INCREASE IN THE ACTIVITY OF THE ENZYME, AFTER A SPECIFIC PHASE THE SITUATION. HOW DO YOU THINK YOU CAN EXPLAIN THIS INCREASE OF TOTAL ACTIVITY?
Answers
The enzyme of this exercise could have increased its activity after their isolation, due to an increase in the substrate this enzyme acts on. For example, after we eat our food at dinner, the concentration of our bodies' insulin increase, due to a higher concentration of glucose from that aliments provenience from the digestion on our stomachs. This also can cause a positive feedback reaction in our bodies, which means that a little amount of enzyme, can produce more of this molecule, and they are those kinds of metabolic processes which usually are involved in maintaining our bodies' homeostasis.
We can see an example of this in the following picture, where the presence of a substrate, activates the enzyme.
would a crocodile be a good index fossil? why or why not?
Answers
Yes, a crocodile would be a good index fossil because it has a long-life span and can be easily recognised.
What is an index fossil?Index fossil is any ancient remains of a plant or animal that lived during a specific geological period and that can be used to date the containing rocks.
A useful index fossil must have the following characteristics:
Distinctive or easily recognizableAbundantwide geographic distributionshort range through timeIndex fossils are the basis for defining boundaries in the geologic time scale and for the correlation of strata. Index fossils, also called key fossils or type fossils, are those that are used to define periods of geologic time.
Some common index fossils include ammonites, crinoids, rugose corals, brachiopods, bryozoans, and mollusks
Therefore, it can be said that a crocodile can be a good index fossil because it can live long.
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the diagram shows a model of an atom. Who first proposed this model?
Answers
Answer:
Hi! The answer is Option D Bohr
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Order the planets from nearest to farthest from the Sun.
Venus
Mars
Mercury
Uranus
Neptune
Jupiter
Earth
Saturn
Answers
Saturn
Earth
Jupiter
Neptune
Answer:
mercury
venus
earth
mars
jupiter
saturn
uranus
neptune
Explanation:
pls tell me if wrong