Answers
Answer:
Regarding the effect of pH on the reaction rate of three different enzymes, what the graph shows is that each enzyme works better at different pH (option A).
Explanation:
Enzymes are specialized protein molecules whose function is to contribute to faster reactions with lower activation energy. To fulfill this function, enzymes must be in an optimal range of temperature and pH.
The graph shows three enzymes, one in an acidic medium, one in a neutral medium and one in a basic medium. The reaction rate of each enzyme is similar, indicating that each is working at an optimum pH. The best interpretation that can be drawn from the graph is that each enzyme works best at a different pH.
The other options are not correct because:
B. The variable "temperature" is not included in the graph.
C and D. Since the comparison of the reaction rate of a single enzyme at different pH is not being made, the graph is not useful to indicate whether an enzyme works better in acidic or basic conditions.
Related Questions
4. The diagram below shows the procedures scientists use to clone a frog from the nucleus
of another frog's skin cell.
Skin cells in
culture dish
Nucleus in pipet
Inject nucleus
into egg
Tadpole
Young
embryo
Adult frog
Untertilized e99
mo
Destroy nucleus
by irradiation
The procedure is evidence that
A. The nucleus of a skin cell protects the frog.
B. Only skin cells can be used to clone a frog.
C. The skin cells are the reproductive cells in frogs.
D. The nuclei of the skin cells of the frog contain all the DNA needed to clone the
frog.
Answers
Answer:
D
Explanation:
the nuclei of the skin cells of the frog contain all DNA needed to clone the frog
The branch of science which deals with the study of a living being is called biology.
The correct option is D
The branch of biology which deals with living things along with technology is called biotechnology. In the question, the genes from the Skin cell of the frog are injected into the egg cell.
This experiment is done because scientist wants to inject the skin cell and pass this character to the new frog without fertilization.
Hence the correct option is D that is The nuclei of the skin cells of the frog contain all the DNA needed to clone the frog.
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A coverslip should be used for preparing a
1.
frog for dissection
2.
solution of iodine for food testing
3.
wet mount of elodea (a simple plant)
4.
test to determine the pH of a solution
Answers
Answer:
3
Explanation:
wet mount of elodea( a simple plant)
An aquifer is a non permeable layer of rock that contains or transports
Answers
Someone please help me
Answers
Answer:
mass and volume
Explanation:
Matter is anything that has mass and takes up space
Which change is not likely to help a community reduce its use of fossil fuels?
O A. Giving citizens money to install solar panels on their homes
B. Lowering natural gas prices in the community
O C. Installing wind turbines in windy areas
D. Switching from coal to hydropower
Answers
Answer:
B
Explanation:
Lowering gas price's will only make the community use more fossil fuels
Translate this rna triplet : UUU
Answers
How is tone in poetry defined?
Answers
Answer:
The poet's attitude toward the poem's speaker, reader, and subject matter, as interpreted by the reader. Often described as a “mood” that pervades the experience of reading the poem, it is created by the poem's vocabulary, metrical regularity or irregularity, syntax, use of figurative language, and rhyme.
Explanation:
C. Suppose you catch 100 fish out of this pond. About how many of these fish would you expect to be
tagged? Explain.
Sot the Fish to catch to 100. Click Catch and check. How does the number of tagged fish shown
Answers
Answer:
C
Explanation:
The chemical reaction that represents photosynthesis is 6 H20 + 6 CO2 → C6H12O6 +6
O2. What are the reactants?
Answers
Answer:
The chemical equation for photosynthesis is 6CO2+6H2O→C6H12O6+6O2. 6CO2+6H2O→C6H12O6+6O2. In plants, the process of photosynthesis takes place in the mesophyll of the leaves, inside the chloroplasts. Chloroplasts contain disc-shaped structures called thylakoids, which contain the pigment chlorophyll.
Explanation:
In chemical reactions atoms are
Neutralized
Destroyed
Created
Rearranged
Answers
Answer: Rearranged
Explanation:
In chemical reactions, atoms cannot be destroyed, created, or neutralized, and that is why the only correct answer, in this case, is that atoms in chemical reactions can be rearranged.
They aren't destroyed and they can never be destroyed and also they cannot be created because of the law of conservation of energy in chemical reactions.
This law is considering that ''A matter cannot be created nor destroyed, it can only be formed in one way or the other.''
Marine science notes what is marine science
Answers
Answer:
The study of oceans and their life.
Explanation:
The study of oceans, including seawater, the ocean floor, and marine plants and animals.
Two genes (R or r) and (D or d), each with a dominant and recessive allele, are
inherited independently of each other. Which of the following combinations
could result in gametes of a plant with an Rr Dd genotype?
A. RD and rd
B. DR, Dr, Rd, dr
C. DD, Dd, dd, RR, Rr, rr
D. Rrand Dd
Answers
Answer:
B. DR, Dr, Rd, dr
Explanation:
This question involves two genes. Alleles D and R are dominant over alleles d and r. These two genes obey the law of independent assortment as proposed by Gregor Mendel.
Based on the question, a genotype RrDd will produce the following combination of gametes following the process of meiosis:
DR, Dr, dR, dr
Identify where replication and transcription take place.
Answers
Answer:
well the DNA replication occurs in the nucleus. DNA transportation occurs in the nucleus. mRNA translation occurs at ribosomes.
In 1998, paleoanthropologist Rick Potts published an article in The Yearbook of Physical Anthropology, a peer-reviewed journal. The article was titled “Environmental Hypotheses of Hominin Evolution.” Which statement would discredit Potts’s objectivity if it were included in the article?
Answers
Answer:
I believe the human race is capable of great things.
Explanation:
Describe: Fossil fuels are used in many ways. Using the Gizmo, describe the main use for each fuel.
Coal:
Petroleum:
Natural gas:
In each case, what is the end product of burning the fossil fuel, and where does it go?
Answers
Answer:
Coal:
Coal is primarily used as fuel to generate electric power
Petroleum:
heating and electricity generation, asphalt and road oil, and feedstocks for making the chemicals, plastics, and synthetic materials
Natural gas:
heating, cooking, and electricity generation.
it all end up in the atmosphere
Explanation:
The coal is burned and the heat given off is used to convert water into steam, which drives a turbine.
petroleum was formed from the remains of ancient marine organisms, such as plants, algae, and bacteria.
Like oil, natural gas is a product of decomposed organic matter, typically from ancient marine microorganisms, deposited over the past 550 million years. This organic material mixed with mud, silt, and sand on the sea floor, gradually becoming buried over time.
Coal and natural gas are burned in power plants to boil water. Steam from boiling water converts turbines into electricity. Carbon dioxide from burning fuel is released into the atmosphere.
This is about description of fossil fuels which are simply fuels that are formed from natural processes.
The uses and end products of fossil fuels are talked about in the explanations below;
1) (I) The primary use of the fossil fuel named coal is to generate electricity.ii) When coal is burnt, it produces a very high heat. This heat is so high that it converts water into high-pressure steam. What drives a turbine is a high pressure steam and this drive makes the turbine to produce electricity.
2) I) Petroleum products are used to set vehicles in motion, for asphalt on roads, production of electricity and heating of buildings.II) when petroleum is burnt to create energy, it produces high amount of carbon dioxide and other toxic gases into the atmosphere that can cause greenhouse effect.
3) I) Natural gas is used primarily as a source of energy for cooking, generating heat and for providing electricity.II) When it undergoes combustion is produces large amount of carbon dioxide and nitrogen oxides into the atmosphere.
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Explain the differences between DNA and RNA.
Answers
The DNA is a double-stranded molecule that has a long chain of nucleotides. The RNA is a single-stranded molecule which has a shorter chain of nucleotides. DNA replicates on its own, it is self-replicating. RNA does not replicate on its own.
Answer:
Explanation:
The difference between DNA and RNA is.....
DNA = Double-stranded
RNA = Singer-stranded
DNA = The sugar moiety is deoxy ribose
RNA = Ribose is the main sugar
DNA = Thymine is always there, but uracil is never found
RNA = Pyrimidine components differ. Thymine is never found
DNA = It follows Chargaffs rule (since it's double stranded)
RNA = Doesn't follow Chargaffs rule (since it's single stranded)
Hope this helped!
timeline of the discovery of Uranus
Answers
13, 1781: British astronomer William Herschel discovers Uranus—the first new planet discovered since ancient times - while searching for faint stars. 1787-1851: Four Uranian moons are discovered and named Titania, Oberon, Ariel and Umbriel. 1948: Another moon, Miranda, is discovered. Mar.
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The pedigree below shows two generations of individuals within a family. The pedigree shows
that a daughter has a genetic trait, even though neither of her parents nor her siblings have the
trait.
7. How can the daughter have the genetic trait if no one else in the family has it?
A. The trait is determined by a recessive allele.
B. The trait is not inherited.
C. The trait is determined by a dominant allele.
D. The trait is passed only from female to female.
Answers
Answer: B The trait is determined by a recessive allele
2. Select the systems below that are affected by cystic fibrosis:*
A. Reproductive
B. Lymphatic
C. Respiratory
D. Gastrointestinal
E. Neuro
F. Integumentary
OOOO
Answers
Answer:
ACDFHope it helps youThe systems affected by cystic fibrosis are the respiratory, gastrointestinal, reproductive, and integumentary.
Cystic fibrosis is a condition that damages organs in the gastrointestinal system or digestive system and the respiratory system. It can lead to damages in:
The lungs (respiratory system)The pancreas (gastrointestinal system)This condition is caused by the accumulation of mucus on organs due to a defective gene. This accumulation leads to negative effects in these systems but also in other systems such as:
Frequent respiratory infection (respiratory system)Damage to the airways (respiratory system)Digestive problems such as diarrhea or constipation (digestive system)Infertility (Reproductive system)Yellowing of the skin (integumentary system)Thus, the systems affected are the respiratory, gastrointestinal, reproductive, and integumentary; while others such as the lymphatic or neurological are not affected.
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Century
Page:
What
vestigial organs?
How do they support organic
evolution ?
Answers
Answer:
Explanation:
Structures that have lost their use through evolution are called vestigial structures. They provide evidence for evolution because they suggest that an organism changed from using the structure to not using the structure, or using it for a different purpose.
Which of the following is not a risk factor for metabolic syndrome?
A. Hyperglycemia (high blood glucose)
B. Hypertriglyceridemia (high blood triglycerides)
C. Low LDL cholesterol
D. Excess abdominal fat
Answers
Answer:
The answer is C
Explanation:
Among the following is not a risk factor for metabolic syndrome is - C. Low LDL cholesterol.
A metabolic syndrome is a group of conditions that can result in cardiovascular diseases such as heart disease, diabetes, stroke, and other health problems. Metabolic syndrome is classified only if a person has three or more of the following risk factors:
High blood glucose or hyperglycemiaIncreased levels of LDL (“bad”) cholesterol in the bloodHigh levels of triglycerides in the bloodLarge waist circumference or “apple-shaped” body due to excess abdominal fatHigh blood pressureThus, the correct answer is - C. Low LDL cholesterol
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A Mismatch occurs when:
A. organisms that were well adapted to one environment cannot evolve rapidly enough to adapt to new circumstances.
B. when an organism is well adapted to its environment
C. when an organism inherits a mutation that decreases its reproductive success
D. when a mutation increases the reproductive success of an organism
Answers
Answer:
A
Explanation:
A mismatch occurs when organisms that were well adapted to one environment cannot evolve rapidly enough to adapt to new changes in the environment. Hence, a trait that once confers an adaptive advantage becomes inimical due to the changes in the environment.
In order words, a mismatch occurs when a once adaptive trait becomes maladaptive or no longer confers an adaptive advantage to organisms due to a change in the environment but still persists in organisms.
For example, an organism with a body adapted to aquatic habitat suddenly finds itself in a terrestrial habitat due to climate change. The body that use to be adaptive to the environment would suddenly become maladaptive to the new environment.
The correct option is, therefore, A.
state two functions of a microscope
Answers
Answer:
what is microscope is a laboratory instrument used to examine objects that are too small to be seen by the naked eye.
FUNCTIONS : The microscope is one of the most important tools used in chemistry and biology. This instrument allows a scientist or doctor to magnify an object to look at it in detail. Many types of microscopes exist, allowing different levels of magnification and producing different types of images
State some changes in boys and girls during puberty
Answers
Answer:
Girls have a change in the way they act and behave, mood swings and changes in there body and growth. Boys have changes in growth and there voices might change.
Explanation:
There. Short answer sorry lol
Please choose the correct letter option below
Answers
Which line
represents
constant speed?
Answers
Answer:
b
Explanation:
During asexual reproduction, does the organism NEED to make a copy of two organisms or can it just be one?
Answers
is protozoans biotic or abiotic
Answers
Answer:
biotic duh!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Maturation refers to
A. Acquiring socially acceptable behaviors
B. Biological growth processes that influence development
C. Learned behavior patterns that accompany personal growth
D. The physical and sexual development of early adolescence
Answers
Someone please help me