Answer:
A) True
Explanation:
In cell biology, what does the word queue describe?
Answer:
In cell biology, the word Queue describes the long arm of a chromosome.
Explanation:
The long arm of a chromosome is termed the q arm. All human chromosomes have two arms; the p arm which is the short arm and the q arm which is the long arm. The two are separated from each other only by primary constriction at the center called the centromere, the point at which the chromosomes is attached to the spindle fibers during cell division.
receptors are needed for which types of cell signaling
Answer:
Ion channel-linked receptors
Explanation:
Cell-surface receptors are involved in most of the signaling in multicellular organisms. There are three general categories of cell-surface receptors: ion channel-linked receptors, G-protein-linked receptors, and enzyme-linked receptors.
Receptors are needed ion channel-linked receptors, G-protein-linked receptors, and enzyme-linked receptors cell signaling.
What are the 3 types of Signaling receptors?
There are three general categories of cell-surface receptors ion channel-linked receptors, G-protein-linked receptors, and enzyme-linked receptors.
What receptor means?
A molecule inside or on the surface of a cell that binds to a specific substance and causes a specific effect in the cell.
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who is the father of genetics
Answer:
The father of genetics is Gregor Mendel. Gregor Mendel was considered the father of genetics during the 19th century.
Hope this helps! :)
The graph below shows the temperature of ocean water at different depths. Which part of the graph represents the thermocline? a. AB b. BC c. CD d. DE
Answer:
C
Explanation:
Generally temperature changes rapidly with the dept in aquatic bodies especially the oceans.The thin distinct or transition layer where the variation in temperature with depth is most significant is called Thermocline.
Its represents the gaps which separate the upper mixed layer from the lower deeper water bed below,it therefore represent the layer of mixture of the upper surface warmer water (C) below 200 meters, with the cooler water layer(E) below,from 1000 meters check the attachment.
It is caused by variation in intensity of sunlight.The latter hits the surface water layer and therefore raises the temperature.But,because of decrease in sunlight penetration,with increasing dept, the temperature of the lower water dept decreases.
1. How many bands did you detect in the lane with undigested plasmid? What size(s) were they? Explain each band. a. We detected there to be one band in the lane with the undigested plasmid.
Answer:
The aim is to eliminate organic matter by disintegrating it with said chemical compound
Explanation:
There are chemical compounds that clean the inorganic layers and others the organic ones.
In the case of sodium hydroxide, this hydroxide is capable of breaking down organic material by removing and removing it from surfaces.
Which type of mutation occurs only in gametes?
germline mutation
somatic mutation
point mutation
frameshift mutation
Answer:
Germline mutation
Explanation:
A germline mutation is a genetic change produced in the gametic-germline cells (i.e., male and female gametocytes). The mutations in the germline are inherited in the next generation, while changes in somatic cells are not inherited. Moreover, the germline mutations may occur either before the fertilization or during embryonic development (zygote morula, blastula and gastrula). This type of mutation may be induced by both endogenous (e.g., oxidative DNA damage) and exogenous (e.g., exposure to UV light) factors.
The type of mutation that occurs in gametes only is : ( A ) Germline mutation
Germline mutation is a type of mutation that occurs in the gametocytes ( male and female ) and is passed( inherited ) on to the offspring ( next generation ). while mutations occurring in somatic cells are not passed on to the next generation .
Germline mutation is induced by either endogenous factors or exogenous factors and this is because Germline mutations can occur before fertilization or after fertilization.
Hence we can conclude that the type of mutation that occurs in gametes only is Germline mutation.
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the period during which blood is being pumped past the semilunar valves into the elastic arteries
Answer: ejection
Explanation:
Uncellular eukaryotic organisms belong to?
All eukaryotic unicellular organisms belong to Protista.
Answer:
Unicellular eukaryotic organisms belong to kingdom protista.
Explanation:
Unicellular eukaryotic organisms belong to kingdom protista. They depend on other organisms for their food since they're not able to produce their own.
Hope this helps :)
The study of changes in phenotype that are not related to changes in the DNA and that may result from the interaction between the genotype and the environment:
Answer:
Epigenetics.
Explanation:
Epigenetics is the study of phenotypic changes which are heritable but not related to changes in the DNA sequence. It is influenced by several factors including the environment.
An example of epigenetics is DNA methylation: addition of methyl group to some part of the DNA that prevents that part from being expressed. Other examples include history modifications.
In summary, Epigenetics describes inheritance through other mechanisms than through the DNA sequence.
The beginning of life for human beings is different from the biological beginnings of other mammals in that it involves the creation of a body and a _______.
Answer:
The beginning of life of human beings is different from the biological beginning of other mammals, since it involves the creation of a body and a brain with the power of reason.
Explanation:
The human being, unlike other animals, his brain has the ability to reason, that is, to be able to manage with an intelligence center.
There are some animals that have developed feelings and that is what makes them be able to look more like humans, but in simple words the rest of the mammals are guided by their natural instinct while man also uses the rational weapon of life. .
A friend comes to you extremely agitated and says her husband beat her last night.She says she doesn't know what to do.You Can See She's Very panicky.Everything you suggest just seems to provoke more anxiety and fears.When you try to respond to one aspect of the problem.Your friend interrupt's frantically and jumps to another.Explain what can you do to help.
The image shows a world map.
60
Which ocean does the prime meridian divide into two
equal parts?
150120
520-15010
EUROPE
Arctic
ASIA
NORTH
AMERICA
Ano
bodan
Atlantic
Ocean
19
AFRICA
15
Pacto
boran
Indian
SOUTH
AMERICA A
coton
AUSTRALIA
O Pacific
00
7
ANTARCTICA
165135'10755' 15 15 15 15 105 135165
Answer:
the arctic ocean, hope this helps!!
Slowing Down Global Warming As Hite and Seitz (2016) discuss in Chapter 5: Climate Change, reputable scientific studies continue to show that the Earth is warming at an unsustainable rate because of a rise in the release of CO2 and methane gases. What is the relationship between population increases and climate change
Answer:
The increasing level of all the facilities like transportation, production, human waste, and developing new spaces for human beings among others are some of the most essential features of climate change. Thus, the demand for novel products, space, and facilities would also enhance with the increase in the population. This signifies that with the enhancement in the facilities, the environment would get influenced, which would eventually influence the climate.
There would be more emission of carbon dioxide and thus more pollution would develop with the increase in the population of human beings, this further would add up in climate change and global warming. Thus, there is a need in the control of the human population, however, technology is also important in helping humans to sustain a better life. This technology should be advanced and well-equipped so that our climate and environment exhibits no deleterious effects.
Novel technologies like the use of renewable energy, green building, prudent application of resources, and others would also assist the humans in sustaining the environment.
The high rate of diversification of HIV strains inside a host is a result of (SELECT ALL THAT APPLY):
Question:
The high rate of diversification of HIV strains inside a host is a result of (SELECT ALL THAT APPLY):
1. High mutation rates in the HIV itself.
2. Strong and varying selection forces caused by hypermutation of antibody genes in the lymphocytes.
3. Errors in transcribing the viral RNA from the host DNA.
Answer:
All the above options are correct.
Explanation:
According to research, Retroviral cultures evolve rapidly to fit the dynamic nature of their environs.
It is also established that errors in replication can provide the basis for diversity.
Cheers!
"Crossing two yellow mice results in 2/3 yellow offspring and 1/3 nonyellow offspring. What percentage of offspring would you expect to be nonyellow if you crossed two nonyellow mice
Answer:1/8
Explanation:
The study of living and non living things is called
Why is DNA called a macromolecule by scientists? A.)because the nucleotide bases in DNA contain nitrogen atoms which make it large B.)because DNA is a massive polymer that contains many different parts C.)because DNA is made of one large, complex molecule of sugar D.)because purines and pyrimidines connect in DNA to make it a large molecule
Answer:
B.)because DNA is a massive polymer that contains many different parts
Explanation:
DNA is also called Deoxyribonucleic acid and it is important in knowing the genetic composition of organisms. The DNA comprises of phosphate, a sugar called deoxyribose, and four nitrogenous base which are adenine, guanine, cytosine, and thymine.
These constituents named above form a long chain which could be in millions and billions. This is why it is regarded to as a macromolecule because it is a massive polymer that contains many different parts .
Answer:
because DNA is a massive polymer that contains many different parts
Explanation:
What was the population density of the original sample? What would have happened if you had inoculated an agar plate with 1 mL of the original sample?
Answer:
The sample was at a population density of 8.75x10^4 CFU/mL originally.
Explanation:
Had it been inoculated in the way as described in the question statement, the bacterial growth would have covered all of the agar plate and we would not have been able to distinguish individual colonies of bacteria. 1 mL is too much of a sample volume to use in cases like these.
As a health care professional, why do eukaryotic parasites need to be reported within 7 days instead of immediately
Answer:
Because there will be no trace of any infection before 7 days because eukaryotic parasites start spreadinv in 7 days and lasts till one month.
Explanation:
Eukaryotic parasites needed to be reported after 7 days because they start spreadinv in 7 days after exposure and last till one months. Before 7 days there won't be any trace of eukaryotic parasites because they will not have start spreading by then because eukaryotic parasites grow slowly that prokaryotic parasites so there will be slower disease progression.
Most damage caused by eukaryotic parasites is due to their growth inside host cell and eukaryotic infections are difficult to treat because their physiology is similar to that of man.
Eukaryotic parasites are parasites that live inside their host causing damage and having nucleus and membrane bound organelles.
11) Assume a population of deer has a crude birth rate of 26 per 1,000/yr, a crude death rate of 15 per 1,000/yr, an immigration rate of 7 per 1,000/yr, and a emigration rate of 9 per 1,000/yr. What is the population growth rate
Answer:
9 per 1,000/yr.
Explanation:
The population growth rate is 9 per 1,000/yr.
The rate of growth of population is determined by the following formula:
Growth rate = B - D + I - E
Where B = birth rate, D = death rate, I = immigration, and E = emigration
In this case, B = 26, D = 15, I = 7, and E = 9. Substitute these values into the equation of growth rate.
Growth rate = (26 - 15) + (7 - 9)
= 11 - 2 = 9
Hence, the growth rate of the deer's population is 9 per 1,000/yr.
7. What purpose did the incubator serve in this experiment? What changes could you make to this experiment to find the optimal temperature for the bacteria converting the milk into yogurt?
Answer:
to provide optimum temperature..
Explanation:
The main purpose of the incubator in this experiment is to provide favorable temperature to the microorganisms. Incubator is a device which is used for rearing the useful microbes such as bacteria and fungi etc. This incubator provides a close environment where temperature of the environment is constant. These useful microbes are very sensitive to external temperature so incubator is used as a growing medium. In this experiment, milk is kept in incubator in order to convert into yogurt by the action of beneficial bacteria. Change the temperature of the incubator in order to find the optimal temperature for the bacteria converting the milk into yogurt.
Based on your observation of the pictured TSI (triple sugar iron) media, which tube(s) could contain a Salmonella or a Proteus species?
The provided ques is incomplete as it lacks the picture showing different media and result, however, the correct question is attached in picture format:
Answer:
The correct answer is - B as tube B shows H2S production.we can see the black color formation.
Explanation:
TSI is a differential media that can distinguish both hydrogen sulfide and fermentation. It is additionally a rich medium permitting the development of particular species.
Sodium thiosulfate and ferrous ammonium sulfate present in the medium identifies the creation of hydrogen sulfide and is shown by the dark shading in the bottom of the tube.
The Triple Sugar Iron (TSI) test is a microbiological test generally named for its capacity to test a microorganism's capacity to ferment sugars and to create hydrogen sulfide. It is frequently used to separate enteric microbes including Salmonella and Shigella.
Thus, the correct answer is - B as tube B shows H2S production.we can see the black color formation.
Which of the following statements indicates the way in which the body's natural defenses protect the skin from the effects of UV damage?
Answer:
Prolonged exposure to the sun induces melanin dispersion, which in turn acts as a natural sunscreen
Explanation:
The statement that indicates the way in which the body's natural defense protect the skin from UV damage is "Prolonged exposure to the sun induces melanin dispersion, which in turn acts as a natural sunscreen." The correct option is D.
What are the effects of UV rays on skin?Psoriasis can be caused by UV rays emitted by the sun or contrived references such as sunbeds.
UV rays can lead to premature skin ageing process and sun damage symptoms such as age spots, bristly skin, liver spots, actinic keratosis, and solar elastosis. UV rays could also harm the eyes.
Ultraviolet radiation has an impact on both humans and wildlife. UV-B radiation hinders the cellular activities including almost all green plants.
There is concern that ozone depletion will result in the extinction of plant species and a reduction in global food supply.
Thus, the correct option is D.
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Your question seems incomplete. The probable missing options may be:
A)The skin is protected by increasing the number of epidermal dendritic cells, which help to activate the immune system.B)Carotene, which accumulates in the stratum corneum and hypodermal adipose tissue, is synthesized in large amounts in the presence of sunlight.C)The skin is protected by the synthesis of three pigments that contribute to the skin's color.D)Prolonged exposure to the sun induces melanin dispersion, which in turn acts as a natural sunscreen.Which of the following is not a possible environmental consequence of urban sprawl?
a.
deforestation
b.
pollution
c.
loss of natural resources
d.
none of the above
The correct answer is D. None of the above
Explanation:
Urban sprawl or the expansion of human settlements such as cities has multiple negative consequences on the ecosystems. This includes deforestation because trees are usually cut to build houses and other human structures. Indeed, most threes and plants are removed for human construction. This also implies a loss of natural resources that include a wide variety of plants, animals, and even water as nearby bodies of water might be polluted. Besides, this general pollution increases in the area this includes noise pollution, water pollution and air pollution that result from human activities. Thus, all are possible consequences of urban sprawl; therefore, the correct answer is none of the above.
Large-scale fires can lead to a decrease in atmospheric carbon dioxide,
Please select the best answer from the choices provided
ОТ
OF
Answer:
False
Explanation:
Fires produce carbon dioxide
If autophosphorylation of CheA protein does not occur, then Escherichia coli cells must be _________.
Options are no given in the question. The complete question is as follows:
If autophosphorylation of CheA protein does not occur, then Escherichia coli cells must be_________________.
A. in a gradient of a chemoattractant.
B. in a gradient of a chemorepellant.
C. tumbling.
D. rotating flagella clockwise.
Answer:
A. in a gradient of a chemoattractant
Explanation:
The autophosphorylation of CheA is described as the autophosphorylation of histidine kinase (s) (CheA protein) in the presence of MgCl 2 and ATP.
If autophosphorylation of CheA protein does not occur in Escherichia coli, then the cells of E.Coli undergo methylation events that allow cell in a gradient of chemoattractants which increases the activity of CheA and CheY-P and cells adapt according to the concentration of chemoattractant.
Hence, the correct answer is A.
What must scientists look for in their experiment or their data to make sure it is accurate? A. Sources of error B. Observations C. Hypotheses D. Dependent variables
Answer:
A SOURCE OF ERROR BECAUSE IFTHERE ARE MISTAKES THEN THE INFO ISNT ACCURATE
Explanation:
MARK BRAINLEST PLEASE
To ensure the accuracy of the experiment and the data the scientists must look for the sources of error.
What are variables?Any characteristic that can have different values is a variable.
What are the types of variables?Variables are of following types:
Dependent: These variables vary and their value depends on independent variableIndependent: These variables they are the cause. They are fixed and on their value the value of dependent variables depend.What is the meaning of accuracy of the experiment?How closely the outcome of an experiment matches the right or recognized value is considered its accuracy.
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Question 8 of 10
The term carbon footprint refers to the amount of carbon dioxide:
A. broken down due to a person's activities.
B. given off due to a person's activities.
C. stored by a person.
O D. consumed by a person.
SUBMIT
Pls help
Answer:
1 B carbon footprint refers to the amount of carbon dioxide given off due to the activities of particular individuals, organization or community
Huntington's disease, which causes degeneration of neurons, runs in Mark's family. Huntington's is a heritable autosomal dominant genetic disease, in an autosomal dominant disease, only one abnormal allele is required to cause the disease in offspring. However, it is possible not all offspring will receive the abnormal allele from an affected heterozygous parent.
Family members that have the disease include Mark's maternal grandfather and Mark's maternal aunts. Mark's maternal grandmother does not have the disease.
Because symptoms of Huntington's disease do not appear until later in life, genetic testing is necessary to determine whether a younger individual possesses the allele for the disease. These tests determined that Mark's mother does not carry the allele for Huntington's disease.
Mark's paternal aunt suggested that Mark create a pedigree to track the disease in his family. Use the symbols provided to complete the pedigree. Each symbol may be used more than once.
Answer:
As it is given that Mark's paternal grandmother and grandfather does not carry the disease. The symbols on the right side of the Punnett represent Mark's paternal family. If both his paternal grandparents are unaffected then his father and paternal aunt are also not affected by the disease.
His maternal grandfather is affected as mentioned and also his maternal aunts are affected. Mark's mother is unaffected as she does not have the disease-causing alleles determined by genetic testing.
Both of the marks parents are unaffected which indicates that marks also do not carry the allele of the disease.
Huntington's disease is an autosomal dominant disorder in which the presence of even one dominant allele can cause the disorder.
The autosomal disorder can not skip a generation, have to be present in every generation.
Condition Given:
Affected Member: Mark's Maternal grandfather and Maternal aunts.
Normal: Mark's Maternal grandmother and Mark's Mother.
As MArk's Maternal Grandfather is affected then his genotype must be Aa because Mark's Maternal grandmother is unaffected (aa), this is the only condition where Mark's mother will be normal.
A- Dominant (Huntington)
a- Recessive
Maternal means on the mother's side and paternal means on the father's side.
The diagram is attached below.
I-1: Mark's maternal Grandmother
I-2: Mark's maternal Grandfather
I-3&4: Mark's Paternal Grandparents
II-1&2: Mark's Maternal aunts
II-5: Mark's paternal aunt
II-3&4: Mark's mother and father respectively will not have the disease as both father and mother of Mark are normal.
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The population of the Earth is roughly eight billion people. If all free electrons contained in this extension cord are evenly split among the humans, how many free electrons (NeNeN_e) would each person get? Use two significant figures.
Answer:
Explanation:
the same question was in my book hehehe so i am telling this from my book
Drift velocity: 3.32\cdot 10^{-4}m/s
2) 5.6\cdot 10^{13} electrons per person
For a current flowing through a conductor, the drift velocity of the electrons is given by the equation:
v_d=\frac{I}{neA}
where
I is the current
n is the concentration of free electrons
e=1.6\cdot 10^{-19}C is the electron charge
A is the cross-sectional area of the wire
The cross-sectional area can be written as
A=\pi r^2
where r is the radius of the wire. So the equation becomes
In this problem, we have:
I = 8.0 A is the current
is the concentration of free electrons
d = 1.5 mm is the diameter, so the radius is
r = 1.5/2 = 0.75 mm =0.75.10^-3m
Therefore, the drift velocity is:
vd=8.0/(8.5.10^28)(1.6.10^19)π(0.75.10^-3)^2=3.32.10^-4m/s
2)The total length of the cord in this problem is
L = 3.00 m
While the cross-sectional area is
A=π ^2=π (0.75.10^-3)^2=1.77.10^-6m^2
Therefore, the volume of the cord is
V=AL(1)
The number of electrons per unit volume is n, so the total number of electrons in this cord is
N=nV=nAL=(8.5.10^28)(1.77.10^-6)(3.0)=4.5.10^23
In total, the Earth population consists of 8 billion people, which is
N^1=8.10^9
Therefore, the number of electrons that each person would get is:
N^e=N/N^1=4.5.10^23/8.10^9=5.6.10^13
hope it helps