What do diatoms and krill have in common?
[tex] \\ \\ [/tex]
=> Diatoms and Dinoflagellates are single-celled, eukaryotic algae. Both reside in marine environments. They are types of phytoplankton.
A life-form from another universe is found to have nucleic acid which includes six different bases - R,S,T,X,Y and Z. The percentage composition of R,S and T is always the same, and the percentage composition of X,Y and Z is always the same. Propose a reasonable hypothesis regarding the structure of the nucleic acid.
R, S, and T always have the same percentage composition, while X, Y, and Z always have the same percentage composition. Chargaff's rule is then a viable theory that can be used in this situation.
The DNA of any species of any organism must have a 1:1 stoichiometric ratio of the purine and pyrimidine nucleotides, according to Chargaff's principles. More specifically, the ratio of guanine and adenine to cytosine and thymine must be the same. This pattern is present in both the strands of the DNA.The formula comes as A + G = T + C = 1In this universe there are six base pairs R,S,T,X,Y and Z. composition of R,S and T is always same thus these can be considered the purines.The percentage composition of X,Y and Z is always the same thus these can be considered the pyrimidines.applying Chargaff's rule to these bases:R + S + T = X + Y + Z
= 1:1
Thus, the nucleic acid will contain six base pairs where bonds are formed between RX, SY and TZ.
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Of the following choices, what is the approximate LD50 of the least toxic substance? 20 mg/kg, 70 mg/kg, or 130 mg/kg
The approximate LD50 of the least toxic substance will be 130 mg/Kg.
The dose necessary to cause the death of 50% of a population under test after a predetermined test period is known as the LD50 value for a drug. Commonly used as a broad indicator of a substance's acute toxicity are LD50 values. Greater toxicity is indicated by a lower LD50. A low LD50 of 500 mg/kg or less implies severe toxicity. Moderate toxicity is indicated by an LD50 of 500 to 1,000 mg/kg. A modest toxicity level of 1,000 to 2,000 mg/kg is indicated.The species is especially vulnerable to the poison if the LD50 is low. The lethal dose (LD50) of a specific poison might change significantly between several animal species.Thus out of all the options, LD50 130 mg/kg will have the lowest toxicity and 20 mg/kg will be the highest.learn more about LD50 here: https://brainly.com/question/24845532
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Aerobic exercise uses enough oxygen for oxidative phosphorylation in the mitochondria of our muscles.
Explain how the products of cellular respiration change as we push our bodies harder. How does this affect our ability to continue exercising?
Aerobic is one that uses oxygen in the process of generating energy in the muscles. This type of exercise works a large number of groups rhythmically.
What happens in aerobic respiration?
Aerobic respiration is the one that participates in the control and can be probable in three steps: analysis of glycolysis, Krebs cycle and oxidative phosphorylation. When breathing, we soon imagine the inflow of oxygen and the outflow of carbonic acid through our airways.
With aerobic cellular breathing, more and more ATP is broken down so that it generates more energy so that we can continue to perform the exercises. This energy causes cells to break down fats.
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Place the steps of endochondral ossification in order, starting with the creation of a cartilage model and ending with the presence of epiphyseal plates between the diaphysis and epiphysis.
Answer bank:
1. The diaphysis center is vascularized, and osteoblasts deposit osteoid over calcified cartilage matrix.
2. Spongy bone and the medullary cavity form in the diaphysis.
3. Spongy bone forms in the epiphysis.
4. The epiphyseal center is vascularized, and osteoblasts deposit osteoid over calcified cartilage matrix.
5. A periosteal collar develops.
The correct steps of endochondral ossification is:
A periosteal bone collar develops.spongy bone and the medullary cavity form in the diaphysis.The diaphysis center is vascularized and osteoblasts deposit osteoid over calcified cartilage matrix.The epiphyseal center is vascularized and osteoblasts deposit osteoid over the calcified cartilage matrix.The spongy bone forms in epiphysis.Which bones grow by endochondral ossification?Long and short bones, such as the phalanges and femur, arise from a cartilage model formed by endochondral ossification. Distinguishing between these two types of osteogenesis does not imply the existence of multiple types of bone tissue.
Endochondral ossification mainly forms in two stages: modifications of the hyaline cartilage that ends with the death of chondrocytes and invasion of osteogenic cells and their differentiation into osteoblasts in the cavities previously occupied by chondrocytes for deposition.
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Using the Punnett square that you created in question number 5, what is the probability that the resulting child will be heterozygous for Huntington’s disease ?
A. 25%
B. 50%
C. 75%
D. 100%
Huntington’s disease is an autosomal dominant affection. Parental's genotype FF and ff. Cross: FF x ff. F1) 100% Ff, heterozygous individuals (Option D).
What is the Huntington’s disease?
Huntington's disease is caused by a mutation in the gene that codifies the Huntington protein (Htt).
The mutation produces an altered form of the protein leading to the neuron death in certain brain areas.
Huntington's disease characterizes for being,
Hereditary, passing from generation to generation. To express the disease the person must have been born with an altered gene.Autosomal, affecting men and women equally because the mutated gene is located on an autosomal chromosome.
Dominant, meaning that by inheriting only one copy of the altered gene from any of the parents, the receiving person will express the disease. The mutation in the gene dominates over the normal gene copy.Expressed by heterozygosis. Most people affected by the disease are heterozygous, with a normal copy and a mutated copy.
Question number 5
To produce only individuals with the genotype Ff, the parentals genotypes must be homozygous dominant and recessive. This is,
Cross: The cross is done between one homozygous recessive and one homozygous dominant individual
Parentals) FF x ff
Gametes) F F f f
Punnett square) F F
f Ff Ff
f Ff Ff
F1) 100% of the progeny is expected to be heterozygous Hh, expressing Huntingnot's disease.
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Complete the paragraph to compare Uranus and Neptune.
Uranus and Neptune are called “ice giants” because they experience very low temperatures. This is due to the fact that these two planets are very far from the
. Their atmospheres both contain
, which makes them appear blue in color.
is believed to have an active and changing atmosphere. Uranus and Neptune have rings and many moons and are part of a group called the
planets.
The Solar system is a gravitationally bound system, consisting of sun along with eight planets with their moons to revolve roughly it. These planets are not alone commodities, whereas some other cosmic objects such as dwarf planets, comets, meteoroids, and asteroids completes the entire solar system.
What are 2 similarities between Uranus and Neptune?
Uranus and Neptune have comparable masses and internal compositions. Their outer atmospheres are composed of hydrogen, helium and methane, while their mantles are a mixture of water, ammonia and methane ices, and their cores are a mix of rock and ice.
The planets like Uranus and Neptune are found at outermost part of the Solar system, since they are located after the asteroid belt.All of these outer planets are much larger then the internal ones so they are also known as "ice giants". The other reason for this name is that they are very distant from the Sun, so their temperature is low.Another feature they have in ordinary is their atmosphere which is composed of gases, including methane, which is accountable for their blue color, since methane absorbs red light.However Neptune is known for very short winds and storms in its atmosphere which is accountable for its high action and changes.
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Answer:im to lazy to say it so i copied and pasted and edg by the way
Explanation:
Complete the paragraph to compare Uranus and Neptune.
Uranus and Neptune are called “ice giants” because they experience very low temperatures. This is due to the fact that these two planets are very far from the
⇒ Sun. Their atmospheres both contain
⇒ methane, which makes them appear blue in color.
⇒ Neptune is believed to have an active and changing atmosphere. Uranus and Neptune have rings and many moons and are part of a group called the
⇒ outer planets.
Identify the results of humans removing large amounts of Earth's vegetation. Select all that apply.
Earth cannot control climate.
Earth cannot control chemistry.
Earth cannot control water.
Earth cannot control volcanoes.
Answer:
Earth cannot control chemistry
which of these urinary hydration biomarkers provides the best index of day-to-day hydration? a) urine color B) urine concentration. C) plasma osmolality. D) plasma volume
Answer: urine concentration is the best answer to this question
Explanation:
Urinary hydration biomarkers provide the best index of day-to-day hydration is urine concentration.
The answer is option B.urine concentration
What is the best index for day-to-day hydration?Plasma osmolality, urine osmolality, and urine particular gravity are the maximum widely used markers of hydration. however, urine shade has also been used with reasonable accuracy while laboratory analysis isn't to be had or while a short estimate of hydration is vital.one of the easiest methods to check your hydration is thru toilet frequency and urine color. urine should be light yellow and also you have to be emptying our bladder on common 5-8 instances according to day. some other way to decide hydration stages (especially after a run) is a sweat take a look.Learn more about urinary hydration here:-https://brainly.com/question/1301665
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Leaves absorb oxygen to make food
True or false
Answer:
false *
Explanation:
because leaves prepare their food by using raw materials .
How many nitrogen bases are there in the codon for one
amino acid?
A 1
B 2
C 3
D 4
Answer:
C.) 3
Explanation:
A codon consists of three nucleotides. Each nucleotide has one nitrogen base. Therefore, one codon has three nitrogen bases.
Using what you know about mutation, cellular division(mitosis), and DNA replication, explain how damaged DNA in a stem cell could cause a large impact to an organism.
Answer______________
_____________________
____________________
____________________
_______________________
Answer:
It could largely impact the way you look.
Explanation:
Since 100% of your DNA decides how you look, if even one thing changes, one part of your look would change. Sometimes it's something big like eye color, or sometimes like a small change in skin color.
The assistance you provide a resident with dementia will not change
throughout the progression of the disease.
False because as the diseas
Receptors are needed for which type(s) of cell signaling?
A. Long range signaling
B. Direct contact
C. Short range messaging
D. Short and Long range
Receptors are needed for both Short and Long range cell signaling.
What are receptors?In the cell, there are some special proteins who play the role of receiving external signals. These are what we call receptors.
These receptors could function for both long and short range cell signaling. Hence, Receptors are needed for both Short and Long range cell signaling.
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A farmer stopped maintaining a field that was once used to grow crops. Over time, the fi eld eventually became a forest. These changes best illustrate the process of
Answer:
plants
Explanation:
because plants grow over the period of time the farmer stopped maintaining the field
In some British hospitals as late as the 1960's flowers and plants were removed from patients rooms at night and placed at the end of the nearest hallway, then returned the next morning. This is no longer done. Can you think of a reason for this practice to have existed in the first place. (Hint: Think in terms of cellular respiration and photosynthesis, not allergies or something else.)
The reason the flowers and plants were removed from patients rooms at night was to prevent the carbon dioxide emitted from affecting the patient.
What is Photosynthesis?This is the process in which green plants manufacture their food in the presence of sunlight.
The light dependent reactions cannot occur at night due to the absence of sunlight thereby resulting in more carbon dioxide being produced during aerobic cellular respiration.
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Which results from an increase in the greenhouse effect?
Answer:
nitrogen?
Explanation:
Burning fossil fuels like coal and oil puts more carbon dioxide into our atmosphere. NASA has observed increases in the amount of carbon dioxide and some other greenhouse gases in our atmosphere. Too much of these greenhouse gases can cause Earth's atmosphere to trap more and more heat. This causes Earth to warm up.
Carbon dioxide (CO2) makes up the vast majority of greenhouse gas emissions from the sector, but smaller amounts of methane (CH4) and nitrous oxide (N2O) are also emitted. These gases are released during the combustion of fossil fuels, such as coal, oil, and natural gas, to produce electricity.
Insulin is an important hormone that allows the body to use glucose from food. After an individual eats a meal, glucose travels through the blood stream and reaches beta cells in the pancreas. The glucose causes the beta cells to release insulin. Insulin then travels through the blood stream and attaches to insulin receptors on other cells, which allows them to take in glucose and use it for energy.
What does this information best demonstrate?
A.
Cells interact with other cells for regulation and homeostasis.
B.
A hormone is a protein that performs many functions in the body.
C.
Only certain cells can use glucose to produce energy.
D.
Beta cells are not necessary for glucose to be utilized.
The best-demonstrated information is
A. Cells interact with other cells for regulation and homeostasis.
C. Only certain cells can use glucose to produce energy.
One of the important hormones in the human body is insulin. How the human body uses food to meet its energy needs is explained by knowledge of insulin and its workings.
Typically, food-derived glucose that enters the bloodstream is what causes blood sugar levels to rise. The pancreas is a gland that aids in the release of insulin to regulate blood sugar levels. Based on the blood sugar level, insulin often releases itself in a feedback system.
The insulin mechanism best exemplifies the following:
Together with glucagon, insulin contributes to the maintenance of the constant condition known as homeostasis in the human body.Considered essential for cells to use glucose and obtain energy is insulin.As a result, the mechanism of insulin in the human body shows how various cells use energy and how insulin is crucial for preserving homeostasis.
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The process that occurs only in the small intestine to increase the absorption of food and nutrients by mixing food
Answer:
I may be wrong I'm sorry
Explanation:
The walls of the small intestine absorb water and the digested nutrients into your bloodstream.
Which statement best explains the purpose of pathos? It uses imagery to highlight the author's description of place. It uses logic to make the author's beliefs seem reasonable. It appeals to authority to show that the author is trustworthy. It appeals to emotions to emphasize the author's point of view.
Answer:
It appeals to emotions to emphasize the author's point of view.
Explanation:
One cell from an organism has a cell wall but no mitochondria will this organism be multicelluar or unicelluar
Put the following steps for creating a genetic fingerprint in the correct order.
A. Extraction, Hybridization, Development, Extraction, Digestion
OB. Separation, Extraction, Digestion, Development, Hybridization
OC. Extraction, Digestion, Separation, Hybridization, Development
D. Digestion, Extraction, Hybridization, Development, Separation
The steps used for creating a genetic fingerprint in the correct order include the following and is denoted as option B.
SeparationExtractionDigestionDevelopmentHybridizationWhat is Fingerprint?These are referred to as the impressions in the form of ridges which are present on the finger. Each individual has his/her unique fingerprint and DNA present for identification.
DNA which is referred to as deoxyribonucleic acid contains genetic instructions and are separated , extracted and then hybridized so as to enable the identification of the specific DNA sequences through the use of substances such as enzymes etc.
This is therefore the reason why option B was chosen as the most appropriate choice.
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Answer: Serparation, extraction, digestion, development, hybridization
Explanation:
What is true about the thickness of the ozone layer?
It has gradually decreased in the last couple of years.
It has remained the same in the last couple of years.
It has entirely disappeared in the last couple of years.
It has gradually increased in the last couple of years.
Answer:
A
Explanation:
The top answer is correct, over time it has become weaker.
Answer: The answer is A (It has gradually decreased in the last couple of years)
Over the Earth's surface, the ozone layer's average thickness is about 300 Dobson Units, or a layer that is 3 millimeters thick.The thickness of the ozone layer changes due to increasing concentrations of ozone-depleting substances in the atmosphere.Air motions also increase the ver- tical thickness of the ozone layer near the poles, which increases the value of total ozone in those regions. Tropospheric weather systems can temporarily reduce the thickness of the stratospheric ozone layer in a region, low- ering total ozone at the same time.It is thinning due to the release of man-made compounds called chlorofluorocarbons (CFC). The net effect that CFCs have on the ozone layer is to recombine an oxygen atom with an ozone molecule to form two oxygen molecules. From 1978 to 1991, global stratospheric ozone levels have decreased by 3%.Which combination of alleles should be here ?number 2
It is important to learn effective ways to give feedback to be an effective communicator and professional. For this
discussion, think about the 4-Step formula from the lecture. Read the scenario below, then answer the prompts.
Scenario:
Jade is a senior marketing coordinator at a large communications company. One of Jade's responsibilities is to mentor
newly hired employees like Carla. Two weeks after Carla is hired, Jade notices that Carla's email messages are
sometimes too informal. As her mentor, Jade decides to give Carla feedback to help her improve.
Hi Carla,
I saw your recent report to the manager. I know that you are supposed to send me the reports to proofread for you, but I kind of assumed you would proofread
them for basic errors before you sent them to me. I think we all were hired because we know how to use professional communication skills, so I was kind of
hoping you would do a better job of fixing your report for major errors before you sent it to me. Can you start doing that please? I am really finding it time
consuming to fix mistakes you could have spotted easily.
1. Describe if you felt Jade's feedback was effective or not based on what you learned about feedback from the lecture.
2. List suggestions on how Jade could improve her feedback to Carla.
No, I don't think that Jade's feedback was effective because she was not very direct.
What is Feeback?This refers to the response that is given to a person based on a query and is a part of effective communication.
Therefore, some suggestions that Jade can use to improve her feedback to Carla are:
Be clear and directDo away with words like "I thought", "I kind of assumed", etc.Give a procedure that can be easily understood by CarlaRead more about feedback here:
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Occurs when the individual inherits only one (female) X Occurs when the individual inherits only one (female) X chromosome
Turner syndrome occurs when the individual inherits only one (female) X chromosome.
What is Chromosome?This is referred to a thread like structure which contains DNA and protein components.
An individual inheriting only one female X chromosome means that the child will have turner syndrome which is characterized by short height, heart defects etc.
The complete question is:
Which condition occurs when the individual inherits only one (female) X chromosome?
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A. Watch the video B. Answer questions below 0:00 5:05 This In The Clinic video will task you 1x O 1.Briefly explain why S. salivarius was selected 2.Briefly explain why the S. salivarius can not be cultured 3. Briefly explain steps how PCR works 4. In the crime scene, which specimen was used for PCR testing? 5. Explain why PCR testing is used in this crime scene 6. What is the purpose of gel-electrophoresis? 7. Briefly explain steps how gel electrophoresis works. 8. Briefly explain how the case was solved. S
The S. salivarius is chosen because it the predominant gram positive bacteria that colonizes the oral cavity shortly after birth.
What is PCR?Polymerase chain reaction(PCR) test is a type of test that is used to identify a particular deoxyribonucleic acid of an organism.
Streptococcus salivarius cannot be cultured especially when the test sample is contaminated with other body normal flora.
The steps of PCR testing include the following:
Denaturation by heatAnnealing Primer to Target SequenceExtensionEnd of the First PCR CycleOn a crime scene, the specimen that can be used for PCR testing are blood and body secretions.
PCR testing can be done on a scene with blood spills.
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Which of these is a living organism that can be
used by scientists to "infect" plants (such as the
soybeans shown here) with genes that can benefit
humans?
A. amino acids
C. Agrobacterium
B. amoebas
D. genetic clones
The living organism that can be used by scientists to "infect" plants (such as the soybeans shown here) with genes that can benefit humans is Agrobacterium.
The answer is option C.Agrobacterium
What is genetic engineering?Agrobacterium tubefaciens is used as a plant vector for plants.Genetically engineered microorganisms and other microorganisms are presently used to produce human insulin, human increase hormone, a protein utilized in blood clotting, and different prescribed drugs.The technology of altering and cloning genes to supply a brand new trait in an organism or to make a biological substance, including a protein or hormone. Genetic engineering mainly entails the advent of recombinant DNA, that's then inserted into the genetic fabric of a mobile or virus.microinjection of DNA into the nucleus of anchored cells;electroporation : where DNA is delivered thru mobile membrane pores via pulsed electrical fees;polycationic neutralization of the cellular membrane and the DNA to be brought to enhance passive uptake;
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PLS HELP ME WILL GIVE 100 PONITS:Explain how to compare 3 and 7 by writing the correct number or symbol in the blanks. 4 12
3 4 8 12 7 9 1
< > = 12 12 2
First, I would rewrite 3 as an equivalent fraction with a denominator of _____. 4
The equivalent fraction is ____. Then, I would compare the equivalent fraction to 7 . 12
So,
3 7
4 1
SUBJECT: science
Some examples of equivalent fractions include:
3/6 and 2/4 are both equivalents because they are equal to 1/225/50 and 50/100 are both equivalents because they are equal to 1/2, etcWhat is an Equivalent Fraction?This refers to the type of fractions that has different denominators and numerators but have the same value when broken down to the smallest terms.
Furthermore, some more examples of equivalent fractions are:
40/80 and 60/120 are both equivalents because they are equal to 1/2100/200 and 150/300 are both equivalents because they are equal to 1/2Please note that your question is unclear, so I gave you a general overview to help you get a better understanding of the concept of equivalent fractions.
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The higher the standard of living for a population, the
the carrying capacity.
Select one:
O a. higher
O b. lower