The volume of a right circular cylinder can be approximated as follows:
Volume = πr2h;
where r is the radius of the cylinder and h is the height of the cylinder;
π is a constant that is roughly equal to 3.
Using the simple approximation above, calculate the volume of a right circular cylinder with a radius of 2 meters and a height of 9 meters.
A.
2,916 m3
B.
14 m3
C.
108 m3
D.
324 m3
The correct answer is A.2,916 m3.
What is circular cylinder?A circular cylinder is a three-dimensional geometric shape that consists of two parallel circular bases and a curved lateral surface that connects the two bases. The shape of a circular cylinder resembles a can or a pipe, and it is a common shape in everyday objects and engineering applications.
To calculate the volume of a right circular cylinder with a radius of 2 meters and a height of 9 meters, we need to plug in the given values into the formula: Volume = πr2h. Since π is a constant that is roughly equal to 3, we can use 3 in place of π.
Therefore, the volume of the cylinder is equal to 3 x (2 meters)2 x (9 meters), which is equal to 2,916 m3.
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In the presence of saturating amounts of oxaloacetate, the activity of citrate synthase from pig heart tissue shows a sigmoid dependence on the concentration of acetyl‑CoA. When succinyl‑CoA is added, the curve shifts to the right and the sigmoid dependence is more pronounced.
Choose the statements that are reasonable explanations for the right-ward shift of the velocity curve caused by succinyl-CoA.
a. Succinyl-CoA competes with dissociation of CoA as a product of the reaction.
b. Succinyl-CoA binds covalently to the enzyme.
c. Succinyl-CoA binds at a regulatory site other than the active site.
d. Succinyl-CoA competes with acetyl-CoA for binding at the active site.
e. Succinyl-CoA competes with oxaloacetate for binding at the active site.
Answer:
c. Succinyl-CoA binds at a regulatory site other than the active site
Explanation:
The sigmoid saturation curve is a property of of allosteric enzymes which reflects the cooperaive interactions between the protein subunits in the enzymes.
Allosteric enzymes function through reversible, non-covalent binding of regulatory compounds called allosteric modulators.
Allosteric enzymes have different binding site for the substrate and for their allosteric modulator.
In the citric acid cycle, succinyl-CoA serves as as allosteric inhibitor of citrate synthase which catalyses the production of citrate from oxaloacetate and acetyl-CoA.
From the given options:
a. Succinyl-CoA competes with dissociation of CoA as a product of the reaction is wrong because it has its own binding site as an allosteric modulator.
b. Succinyl-CoA binds covalently to the enzyme is wrong because allosteric enzymes functions through non-covalent interactions.
c. Succinyl-CoA binds at a regulatory site other than the active site is true because citrate synthase is an allosteric enzyme
d. Succinyl-CoA competes with acetyl-CoA for binding at the active site is wrong because acetyl-CoA binds to the active site while succinyl-Coa binds to the regulatory site.
e. Succinyl-CoA competes with oxaloacetate for binding at the active site is wrong because oxaloacetate binds to the active site while succinyl-Coa binds to the regulatory site.
Hemoglobin is the blood protein responsible for the transport of oxygen. Carbon monoxide disturbs oxygen transport by
Answer:
Answered below
Explanation:
Hemoglobin is found in the red blood cells and is responsible for the transportation of oxygen from the lungs to the various body cells.
Oxygen binds to hemoglobin because it has a high affinity for it. This aids its transportation. When it gets to the cells it unbinds and get transported into the cell for use in energy production.
Carbon monoxide is an odourless, dangerous gas which has more affinity for hemoglobin than oxygen. Therefore when carbon monoxide is inhaled, it quickly binds to hemoglobin, thereby displacing oxygen. It binds to hemoglobin for a longer period and due to this, the body does not get any oxygen and cells begin to die.
Symptoms of carbon monoxide poisoning include dizziness, headaches, fatigue and coma.
Please help me come up with an answer for this question thankyou so much! Compare and contrast the processes of cellular respiration and photosynthesis. Think of as many similarities and differences as you can (things to consider: inputs and outputs, the role of energy, the types of organisms that do each process, the location within cells)
Explanation:
The end result is glucose, with oxygen being the waste product. The two processes are similar in that they both produce energy, albeit in two different forms. They are different in that photosynthesis assembles the glucose molecule, while cellular respiration takes it apart.
Which of the following techniques involves hybridizing a cDNA sample to a chip containing thousands of single-stranded DNA sequences, allowing one to study the expression of thousands of genes simultaneously?
A) PCR
B) Southern blot
C) FISH
D) Agarose gel electrophoresis
E) DNA microarray
Answer: Option E.
DNA micro array.
Explanation:
DNA microarray is a technique that involves hybridizing cDNA into a chip that contains thousands of single stranded DNA sequences. This technique enables one to study expression of thousands of genes at the same time.looks for extra (duplicated) or missing (deleted) chromosomal segments, sometimes called copy number variants (CNVs).
DNA microarrays are microscope slides which are printed with thousands of tiny spots in specific different positions, and each of the spots contain a known DNA sequence or gene.
primary use of DNA microarrays is transcriptional profiling.
The basic principle behind the DNA microarray is “ nucleic acid hybridization.
An example of genetic recombination is shown in the diagram. An example of genetic recombination is shown. 2 cells are connected but each have their own D N A. A structure is stretching from one cell to another. Which type of bacterial reproduction is depicted in the diagram? binary fission transduction conjugation transformation
Digram is not given in the question, so, the required diagram is attached below:
Answer:
conjugation
Explanation:
Conjugation is defined as a sexual process in which two organisms of the same species share their nuclear material or DNA with each other and form a new organism.
Binary Fission is defined as the process in which one organism divides into two daughter cells to form a new organism.
Transduction is the process in which a foreign DNA is transferred into a cell with the help of a vector.
Transformation is the process of genetic alteration in which a cell acquires genetic material from its surroundings.
Hence, the diagram is showing the process of "conjugation".
Answer:
the answer is C-conjugation
Explanation:
A pharmaceutical company is working on a drug to slow the spread of Ebola. Which of the following should be the company's focus?
a. Sanitizing the drinking water
b. Protecting the food supply
c. Person-to-person contact
d. Killing the insect vector
Answer:
C
Explanation:
Although Ebola isn't transferred by the air and through touch. Bodily fluids like sweat, saliva, urine, breastmilk, semen, and vomit all transmit the disease, if a person gets it in a cut or is directly introduced by it (sexual intercourse.)
whats 20x20? thank you
Answer:
400 yayyyyyy
Explanation:
yvhjghkkkkhhh
Answer:400
Explanation:
20
x20
_____
00
+400
--------
400
Match the following terms and definitions.
1
chlorophyll-bearing organisms lacking true stems, roots, or
leaves
kelp
fucoxanthin
2. a brown pigment of the algae
any one of certain large, tough, brown seaweeds; the source
3.
of potassium, iodine, algin, and sodium carbonate
4 a red pigment found in red algae and in a few cyanobacteria
algae
phycoerythrin
Answer:
match the following from definition
first chloro peak bearing organism lekin truls rate root all leaves have frock so thin second a brown pigment of the algae or one of the container
chlorophyll-bearing organisms lacking true stems, roots, or leaves - Algae
a brown pigment of the algae - fucoxanthin
any one of certain large, tough, brown seaweeds; the source of potassium, iodine, algin, and sodium carbonate - kelp
a red pigment found in red algae and in a few cyanobacteria - phycoerythrin
why the tropics have more species than the poles of the Earth
Answer:
the tropics have more species because of the more humid enviroments because not many warm blooded animals can live near the poles. because of the abnormally cold temperatures, not many animals can survive unlike in tropical areas where there is a more vaste amounts of food and plant species, also shelter.
The uterine cycle describes the cyclic changes of thickening and degeneration that the endometrium goes through in a month. What is the order of events in one uterine cycle
Answer:
During the uterine month there are different phases through which the uterus passes, these phases are regulated by hormones and are responsible for producing the cycle necessary for fertilization.
Phase where menstruation occurs: This phase only happens if the woman was not fertilized and did not develop the diploid cell together with a sperm, since not being fertilized, all the uterine preparation that had been planned in the body for fertilization will be released as that we know "menstruation", in this phase estrogens and progesterone are low. The inner walls of the unfertilized uterus are released.
Follicular phase, in the follicular phase the ovaries prepare to release an egg and estrogen begins to rise. (From the first day of the period until ovulation)
Proliferative phase, in the proliferative phase, new vessels proliferate and the outermost layer of the uterus prepares itself for possible fertilization, is where spiral arterioles can begin to form again in the external cut of the myometrium.
Ovulation, here is where the mature ovum is called Graff's follicle, at this time estrogen reaches its peak and then descends.
Luteal phase, in the luteal phase the production of the luteal body is generated, at this stage progesterone takes center stage, and it is the range between ovulation and menstruation (if not fertilized)
Last phase, secret phase, in this phase there are two possible ends, if the woman is fertilized, the egg cell implants and begins the development of the embryo and if it is not fertilized, the entire external cut of the myometrium is prepared to be secreted.
Explanation:
A very important fact to clarify is that women are born with a quantity of ovules that at the end of this uterine cycle ceases to exist, this process is what we know as menopause.
That is to say that women have a quantity of ovules that will one day run out, and the body releases them from the menarche or the first menstruation, generating that in each released ovule a uterine cycle is completed, the day they end the woman will have reached menopause and would have no chance of being fertilized or completing the uterine cycle.
superficial layer of the endometrium is shed
basal layer of endometrium grows, forms gland and blood vessels
enriched endometrial blood supply
endometrial glands secrete nutrients into uterus
Which of the following could be discovered by studying the gross anatomy of a cadaver?
The function of cells within the body
The types of cells within each organ
The function of the body's organs and systems
The structure of the body's organs and systems
Answer:
The structure of the body's organs and systems
Explanation:
In medicine, a cadaver is a dead human body dissected in order to study its anatomical structure. It is employed by medical students and other medical practitioners to study the structure of the human body.
Anatomy is a branch of science that has to do with the study of the structure of living organisms. Relating anatomy to cadaver, these dead bodies are dissected in order to view and study the structure of the different compartments of the body e.g organs, systems etc.
help asap giving branlist
Answer:
symbiotic relationship
Explanation:
Which of the following phenotypic classes reflect offspring that were generated as a result of a recombination event?
a. vestigial wings, red eyes
b. vestigial wings, purple eyes
c. full wings, red eyes
d. full wings, purple eyes
Answer:
The correct options are: A " vestigial wings, red eyes" and D "full wings, purple eyes"
Explanation:
female parent: vg+pr+/vg pr
(phenotype - full winged and red eyes)
male parent: vgpr/vgpr
(phenotype - vestigial winged and purple eyes)
Of these traits, vestigial wings and purple eyes are recessive traits. Hence, when a recombination event occurs, the offspring can potentially have a wild type trait paired with a recessive trait.
b. (state a differences between blood and inter cellular fluid
Which of these lymphoid organs destroys bacteria before it can breach the intestinal wall and generates "memory" lymphocytes for long-term memory?
Answer:
Peyers patches
Explanation:
Peyers patches are group of lymphoid follicles found in the ileum of the small intestine.
This part of lymphatic system form part of immune system that help to control bacteria population in the small intestine and prevent the growth of pathogenic bacteria in the small intestines. It plays an important role in immune surveillance where it recognises pathogenic bacteria and destroy the bacteria.
It is a lymphoid organs destroys bacteria before it can breach the intestinal wall and generates "memory" lymphocytes for long-term memory because it form the part of the immune system which help to fight infection or foreign substances in the body, also by generating lymphocytes which is a white blood cells of the immune system which generate long term memory of foreign pathogens and destroying it.
Knowing the epidemiology and causative agent of Legionaries disease what questions would you ask of the victims or of their surviving relatives?
Answer:
Answered below
Explanation:
Legionnaires disease is a type of lung inflammatory disease or pneumonia, which is caused by infection from the bacteria Legionella bacterium.
Legionella bacterium can be spread by inhalation from water or soil. People with weakened immune systems are most susceptible as are smokers. Untreated legionnaires disease can progress to a fatality.
Some of the questions to ask of a victim or of surviving relatives include;
1) Any visits to swimming pools?
2) Source of drinking water?
3)Any visits to fountains?
4) Contacts with victims and their personal belongings?
5)Is any relative or victim immunocompromised? Do they have diseases that might lower their immune response?
6) Are they smokers?
Which interaction is an example of commensalism?
O A. Insects helping plants reproduce while eating the nectar in their
flowers
O B. Bacteria living inside a human's stomach and making the person ill
C. Birds building nests in the branches of trees
O D. Mosquitoes eating the blood of cows and passing on a disease
SUB
Answer:
C
Explanation:
Commensalism is where one organism benefits while the other is neither harmed nor benefited.
A - Both parties benefit
B - Bacteria benefit, the human is harmed
C - Birds benefit, the tree neither
D - Mosquitoes benefit, cow is harmed
How did Dinosaurs diminished from earth?
Answer:
Hey there
It is believed that the dinoursars diminished from earth through a massive meteorite which weight 2 trillion tons which hit the earth causing maximum heat and it killed all the dinoursars
Explanation:
Have a nice day
How many more phases occur during meiosis than during mitosis?
none
two
four
six
Answer:
there are 4 more phases that occur during meiosis than mitosis
Answer:
The answer is.....
Explanation:
C. Four
Explain why chemogenetic based methods of regulating cellular signaling result in poor temporal control of biochemical pathways relative to optogenetic based methods.
Answer:
They use different detecting methods to assess neuronal circuits
Explanation:
Chemogenetics is a technique widely used in neuroscience research to explore signaling interactions by means of genetically modified receptors capable of interacting with small molecules. Chemogenetics was first used to determine the function of the chalcone isomerase gene by inducing mutations that altered its substrate specificity. On the other hand, optogenetics is a bioluminescence-driven genetic technique used to control genetically modified neurons that express light-gated ion channel genes. This technique is also used to monitor neuronal networks. In consequence, optogenetic and chemogenetic techniques have recently been combined in order to analyze neuronal circuits, it by analyzing the same actuator molecule.
1. One important feature of DNA is that it can be accurately copied and inherited from one generation to the next. Imagine if DNA was NOT accurately replicated. What errors could occur and how would they affect the offspring in the next generation
Answer:
Explanation:
If DNA is not accurately replicated it can lead to mutation. Mutation is a genetic disorder that occur when a change occur and affect the genome of an organism. It can be result in frameshift mutation shifting nucleotide arrangement.
When DNA is not accurately replicated, it could lead to formation of an entirely new protein different from the original which has a different function this could lead to a form of disorder in the offspring. The effect of this disorder depends on it severity.
why the swimmer push the water backward
Answer:
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Explanation:
Swimmers push water backwards to propel forwards. In other words, swimmers push their hands and legs against water to move forward. This is stated in the third law of motion, for every action, there is an equal and opposite reaction.
What common features do eukaryotic mRNA share? Please use one of these features to describe how you can isolate eukaryotic mRNA from the cell extract. (limit your answers in 4 lines)
Answer:
A common feature in mRNAs that allow extraction from the cell is the 5' cap region which has a Guanine nucleotide attached to the mRNA in an atypical five prime to five prime triphosphate linkage.
Explanation:
The 5' cap structure serves to protect the mRNA against damage from RNA phages and an extraction protocol an be used to isolate the mRNAs from the cells. Reagents such as Dichloromethane, sodium hydroxide and diethyl ether in aqueous solution helps separate the organic layer, a silica-gel column can be used to further isolate the mRNAs
what is the importance of autotrophic organisms for other organisms?
Answer:
the importance of autotrophic organisms with respect to energy flow and nutrient cycling in ecosystems. Primary producers usel solar or chemical energy to manufacture their own food and they use this energy through cellular respiration and growth and reproduction--energy used for NPP.
Which list below describes a possible path of rain through the water cycle? (2 points) Group of answer choices Evaporation, condensation, precipitation, runoff Runoff, ocean storage, evaporation, condensation Transpiration, condensation, precipitation, runoff Evaporation, precipitation, runoff, lake storage
Answer:
evaporation,condensation,precipitation,runoff
Answer:Evaporation, condensation, precipitation, runoff
Why were the advent of metagenomics, and the application of molecular techniques such as single-cell and next-generation sequencing, important for defining a microbial relationship
Answer:
Based on novel approaches, it has been seen that symbiotic associations prevails between a host and one to thousands of more microbes, which challenges the previous meaning of symbiotic association as one that takes place between the host and a single microbe. It was considered previously that symbiotic association’s takes place only between the pair of single microbe and host.
However, newer approaches has revealed that such kind of association can take place between one microbe and many other hosts. A symbiotic association can take place between microbe-microbe, plants-plants, microbe-plants, and others. However, symbiotic association has never been found to take place between a bacteria and animal host. The symbiotic associations are always not parasitic.
3. List the molarities at which water exited the potato strips. Why did water move out of the potato strips? Were these solutions hypotonic, hypertonic, or isotonic?
Answer:
The water came out of the strips of the potatoes because a process of balance and oxygen balance called osmosis occurs.
Explanation:
The potato was subjected to a hypertonic environment and it is considered hypotonic, that is why the water seeks to go out to the outside in order to generate that it finds a balance in relation to a solvent solvent.
Fill in the blanks.
1. The phylum contains most common animals you are familiar with su
as eagles, dogs, foxes, and frogs.
2. While the earth is home to many members of this phylum, earthworms are
a member of
3. The most successful phylum on earth is which contains insects,
spiders, and crustaceans.
4. An animal that molts it exoskeleton is called a(n).
5. are cells that have the potential to become any type of cell; they hav
not yet received their genetic programming.
6. All members of the animal kingdom are multicellular, heterotrophic and
7. A starfish is a bilaterian deuterostome with symmetrical adults.
8. Complete the chart by describing what kinds of organs or tissues each type
germ layer becomes:
Moi
Answer:
1. chordata
2. nematoda
3. arthropoda
4. ecdysozoan
5. stem Cells
6. eukaryotic
7. radically
Chart answer:
Endoderm = Lungs, liver, pancreas, lining of gut organs
Mesoderm = Bone, muscle, heart, circulatory system
Ectoderm - Brain, nervous system, skin
Explanation:
Answer:
1. chordata
2. nematoda
3. arthropoda
4. ecdysozoan
5. stem Cells
6. eukaryotic
7. radially
8. Endoderm… Mesoderm becomes… Ectoderm becomes…
Lungs, liver, pancreas, lining of gut organs
Bone, muscle, heart, circulatory system
Brain, nervous system, skin
Explanation:
What is one way to classify mud found in an ecosystem? organism population biotic factor abiotic factor
Answer:
abiotic factor
Explanation:
Mud, while hosting many multicellular and unicellular organisms, simply refers to the combination of water and dirt, neither of which are living.
Answer:
abiotic factor
Explanation: