Answer: Option B.
Damage to the sun
Explanation:
Damage to the sun is not a negative way we use science because the sun is very far away from the Earth. The sun is so far away that light from the Sun, traveling at a speed of 186,000 miles (300,000 kilometers) per second, takes about 8 minutes to reach us. This means that The distance from the sun to the Earth is far and it's difficult for science to have negative effects on the sun. The sun is not easily accessible and sun damage is not easily affected compared to pollution, climate Change, overuse of resources which it's as a result of science negative effect.
Implanting an electrode that supplies a weak electrical current to specific brain areas is called _____. It is useful in the treatment of _____
Answer:
Deep Brain Stimulation (DBS)
Depression, Uncoordinated body movements such as in Parkinson's disease
Explanation:
Deep brain stimulation is a surgical procedure in which a device that sends electrical impulses to the brain by means of lead wires connected to electrodes placed in the specific areas of the brain, is implanted in the body, typically the chest region.
This surgical procedure is usually required to treat diseases in which there is irregular and improper nervous stimulation of the brain resulting in various nervous disorders such as irregular muscle movements as in Parkinson's disease as well as depression.
The impulses sent from the stimulator device to the electrodes in the brain through the wires, serves to stabilize and normalize nerve signals sent to the brain.
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.
Lysosomes are responsible for
Answer: the digestion of macromolecules, old cell parts, and microorganisms.
Explanation:
Answer:
(in the explanation)
Explanation:
This is a membrane-bound cell/organelle that includes digestive enzymes. They are included in many cell processes. They decompose or break down excess and worn down cells. They can build up your immune systems and kill and virus or bacteria.
Which activity involves a chemical change?
A. Ice melting into liquid water
B. A metal rod being bent into a ring
C. Colorless egg becoming a white solid
D. Salt dissolving in water
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option C is correct........
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Explain what are co-evolved mutations and how can they help with predicting protein structures?
Answer:
The correct answer is as follows.
Explanation:
Coevolution is a phenomena where two related species evolve at the same time since they share a close relation. For instance, the relation between a predator as its prey or a virus and its hostage. This phenomena helps to predict protein structures, since by revealing the higher order structure of a protein we can predict the structure of other protein that have coevolved with it. This has been used in several studies, such as one 2015 study of Pandini and collaborators entitled "Coevolved Mutations Reveal Distinct Architectures for Two Core Proteins in the Bacterial Flagellar Motor".
If there are 12 chromosomes in an animal cell in the G 1 stage of the cell cycle, what is the diploid number of chromosomes for this organism?
Answer:
The gametes are haploid, having half the number of cells as compared to somatic cells. The gametes or sex cells produced by the organism will have 6 chromosomes if the organism has 12 chromosomes
Explanation:
"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:
Three types of threats to biodiversity are:
habitat loss and fragmentation
the introduction of exotic, or non-native, species
overexploitation, or overharvesting
Determine the type of threat that each of the following statements describes.
a. Small rainforest remnants have less diversity than larger rainforest remnants.
b. Melaleuca trees from Australia displace native wetland vegetation in Florida.
c. Wild American ginseng populations have declined as a result of increased demand for the roots.
d. A wetland is drained to make room for a housing development.
e. Florida panthers were geographically cut off from other panthers about 100 years ago.
f. Cod are caught faster than they can reproduce.
g. South American rodents called nutria eat wetland plants and cause bank erosion in the United States,
h. Some fishing nets damage the seafloor.
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! :)
Which activity is part of managing water resources?
studying water to see whether it is polluted
taking a long hot bath to stay warm
drinking water and using it for swimmig and boating
transporting water to areas where it is needed
First and Last ones I think. Not sure.
Answer: D
Explanation: Studying water isn’t managing it, and taking a long bath isn’t either. Drinking water isn't really saving or managing so D.
A circular double-stranded DNA molecule contains 4200 base pairs. In solution, DNA is in a B-form helix, with about 10.5 base pairs/turn. The DNA has 12 superhelical turns. What is its superhelix density
Answer:
The correct answer is - 3 × 10⁻²
Explanation:
first find LKo = length of BDNA/ 10.5 bp/turn
= 4200/10.5
= 400
now calculate Δ LK= LK - LKo
ΔLK = 412-400
ΔLK = 12
now, superhelix density = ΔLK/LKo
⇒ 12/400 = 0.03
= 3×10⁻²
Thus, the correct answer is - 3 × 10⁻²
1. List five processes that are regulated by the hypothalamus: A. __________________________________________ B. __________________________________________ C. __________________________________________ D. __________________________________________ E. __________________________________________
Answer:
Answered below
Explanation:
The hypothalamus is a small part of the brain located at it's base near the pituitary gland. It has three main regions and each region contains different nuclei. These neurons perform different important functions in controlling the many physiological processes and in the maintenance of homeostasis in the body. Five of such processes that are regulated by the hypothalamus include;
1) The hypothalamus regulates the release of hormones by producing hormone releasing factors which trigger or inhibit the release of hormones form other parts of the body.
2) Regulation of body temperature.
3) Regulation of blood pressure and heart rate.
4) Regulation of appetite and weight control.
5) Regulation of the volume of body fluids.
How did the Rf values differ between pigments and solvents?
Answer:
The Rf values indicate how soluble the particular pigment is in the solvent by how high the pigment moves on the paper.
Explanation:
The Rf values indicate how soluble the particular pigment is in the solvent by how high the pigment moves on the paper. Small Rf values tend to indicate larger, less soluble pigments while the highly soluble pigments have an Rf value near to one.
Which of the following describes a benefit of membership in a research community?
Answer:
knowledge and valuable resources are shared among scientists
Explanation:
The best benefit and reason for joining a membership in a research community is that knowledge and valuable resources are shared among scientists. Since the entire community is working towards a common goal, then gaining information from everyone in order to get closer to that goal is priceless. Also, the ability to use high-end resources that would be impossible to use as a lone scientist due to its high price is also a very valuable benefit.
What does swelling of the Lymph nodes indicate
Answer:
Swelling of the lymph nodes is a sign that they are being overworked.
Explanation:
Unnecessary waste could be building up in your lymph nodes and this can also signal that you may have an infection.
Hope this helped! :)
Which of the following statements is true?
-Diffusion describes the concentration gradient in a solution.
-Diffusion regulates which molecules can and can't pass through a plasma membrane.
-Diffusion is the movement of water across a selectively permeable membrane.
-Diffusion does not require energy and is therefore a form of passive transport.
Answer:
Diffusion is the movement of water across a selectively permeable membrane.
Explanation:
Hope it helps.
The statement which is true about diffusion is as follows:
Diffusion does not require energy and is therefore a form of passive transport.Thus, the correct option is D.
What is Diffusion?Diffusion may be defined as the movement of substances from a region of higher concentration gradient to a region of lower concentration gradient through a semipermeable membrane.
Diffusion not only facilitated the movement of water across a selectively permeable membrane but also other substances as well. Diffusion only regulates the movement of those molecules which can pass through a plasma membrane.
It is the means of movement of substances that do not require any form of energy. And thus, diffusion is significantly a form of passive transport.
Therefore, the correct option for this question is D.
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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.
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
the clean water act ___
set maximum contaminant levels for drinking water
required industries to reduce or eliminate point source pollution in surface waters
established national ambient air quality standards
requires that pollution control devices be installed on cars and trucks and at factories
Answer: The Clean Water Act required industries to reduce or eliminate point source pollution in surface waters
The order Primates includes Group of answer choices monkeys, prosimians, humans and apes. only monkeys. only humans. only apes. only monkeys, apes and humans.
Answer:
monkeys, prosimians, humans and apes
Explanation:
The correct answer would be monkeys, prosimians, humans and apes.
Primate represents an order within the Mammalian class. The group consists of animals that fall into two sub-orders - the strepsirrhines which consist of lemurs, lorisoids, etc, and the haplorhines which consist of monkeys, apes, and humans.
Collectively, the apes and the monkeys are categorized as simians while all other animals primates are referred to as the prosimians.
Hence, monkey, prosimimians, humans, and apes tend to cover all the groups under the primate order.
Answer:
monkeys, prosimians, humans and apes
Explanation:
AMSCO
Why is it difficult to establish rules, regulations and laws to protect sea turtles over their entire range
Answer:
The reason why it is difficult to create rules, regulations and laws to protect sea turtles over their entire range is that, it would take a concerted effort on a global scale to achieve that. The logistics and administration of such efforts of would take some years to work out.
Explanation:
Answer:
The reason why it is difficult to create rules, regulations and laws to protect sea turtles over their entire range is that, it would take a concerted effort on a global scale to achieve that. The logistics and administration of such efforts of would take some years to work out.
Explanation:
Sea turtles can be found around the world. The efforts described above, therefore, would require that many different countries and cultures would have to cooperate as well as own their share of the responsibility required to make it so.
Legislation with regard to the efforts would need to be executed if not simultaneously, at least over approximately the same block of time.
Not only that, it would require tons of research as the peculiarity of each geographical location would be considered.
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The Law of Overcompensation and Overload allows for which of the following in regards to intensity?
A. Progressively increase over a period to time
B. Progressively decrease over a period of time
C. Remain the same
D. Acute decrease over a period of time
Answer:
A. Progressively increase over a period to time
Explanation:
The law of overcompensation states that the environment compensates for any factor by twice the amount and the overload theory states that challenges should be increased while working on a certain task to improve the results.
The laws allow for the following:
Option A. Progressively increase over some time.
The laws can be explained as:
In fitness and sports, the laws of overload and overcompensation are widely used. The overload principle says that the intensity and exercise duration should be increased gradually to see an improvement in endurance, strength and muscles.According to the overcompensation theory, the body recovers from any injury or harm the body does not quit there and will be stronger compared to before.Thus, overcompensation and overload increase over time.
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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 specialized soft tissue manipulation technique used to ease the pain of conditions such as fibromyalgia, movement restrictions, and temporomandibular joint (TMJ) disorders is known as _____.
Answer:
myofascial release
Explanation:
The study of living and non living things is called
how is mitosis different in plants and animals A. in plants, a new cell wall forms to split the cell B. in plants , the DNA is not duplicated C. in animals there is no g0 phase or g2 phase D. in animals the DNA is one circular chromosome
Answer:
A. In plants, a new cell wall forms to split the cell
Explanation:
In animal cells, they don't have a cell wall. During mitosis, they just split the cell membrane in order to create 2 new cells. In plant cells, they have cell walls. During mitosis, they create a new cell wall and place it in-between the 2 cells to create 2 new cells.
what happens when we eat a lots of fried food
Answer:
Eating a lot of fried food can cause a greater risk of developing heart disease, chronic disease, and obesity.
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. .
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.
Which structure of a paramecium is analogous to a “reserve copy” of all the cell’s genes
Answer:
micro nucleus
Explanation: