Answer:
It can be explained by hybridization among human and neanderthal ancestral populations.
Explanation:
Next-generation sequencing (NGS) technologies coupled with bioinformatics tools have enabled to confirm admixture between Neanderthals and humans. The technique to identify admixture events consists in discovering nucleotide regions from neanderthal genomes that could be inserted in human genomes, thereby the observed sequence homology must be statistically significant (e-value). This emergent research field is known as paleogenomics.
How is global climate change is impacting our ecosystems ( in your own words not from google )
Answer:
Climate change impacts where species live and how they interact, also including the timing of biological events. Climate change can immense the capacity of ecosystems to extreme events and disturbance, such as wildfires, floods, and droughts.
Explanation:
Examples of stimulants include
a. Nicotine
b. Ecstasy
c. Dextromethorphan
d. A and B
Answer:
The answer to this question is d(A and B)
Explanation:
Hope this helps
Answer:
d but also c !
Explanation:
A and B are correct but also dextromethorphan has lower doses of stimulants
I need to figure out the structure of an unknown organism and what the main type of cell it is by only knowing: Organism’s cell are able to move Internal structures appears to be made of protein fibers Internal structures protein fibers measured 7.0 nanometers diameter Internal structures protein fiber appears to be two strands intertwined with each others
Answer:
the structure: microfilaments or actin filamentsthe main type of cell: eukaryoticExplanation:
In eukaryotic cells, the cytoskeleton is composed of three well defined filamentous structures: microtubules, microfilaments, and intermediate filaments. Each of these filamentous structures is a polymer of proteinic subunits united by weak, not covalent connections.
The microfilaments are the thinnest of the three structures. They have a diameter of 7 nanometers and are composed of many proteinic monomers united. This monomeric protein is called actin. Many monomers get combined to form a structure that assembles a double helix.
Due to the fact that these microfilaments are made of actin monomers, they are also known as actin filaments.
Actin filaments have directionality which means that their extremes have different structures.
Microfilaments interact with myosin filaments. These are associated with transmembrane proteins that have one domain in the cytosol and another in the cell exterior, therefore they participate in the processes of cell mobility.
Which puppy might have been placed into this litter by mistake
When jared gets to work, he looks at the latest data on wind speed, temperature, and humidity. Then, he uses a computer model to help him predict where storms may occur. In what field of earth science does jared work?
A.astronomy
B.meteorology
C.environmental science
D.geology
Answer:
B. meteorology
Explanation:
Someone who predicts weather based on patterns, models, and current atmospheric conditions is a meteorologist.
╭☞ When jared gets to work, he looks at the latest data on wind speed, temperature, and humidity. Then, he uses a computer model to help him predict where storms may occur. In what field of earth science does jared work?
ANSWER:╭☞ B. meteorology
Explanation: Because meteorology is a branch of the atmospheric sciences that includes atmospheric chemistry and atmospheric physics, with a major focus on weather forecasting. like your question.– Meteorologists are scientists who study and work in the field of meteorology.
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Congenital hyperinsulinism is a rare condition in which infants experience frequent episodes of hypoglycemia. Based on the functions of the two main hormones that control blood sugar homeostasis, which of the following would be effective at treating the hyperinsulinemia?
A. Glucagon
B. Glucocorticoids
C. Preventing insulin release or production
D. All of the choices are correct.
Answer:
Any treatment which involves reduction in the levels of insulin to curb excessive influx of glucose into the cells from the blood will be an ideal treatments.
Glucagon, which converts excess glucose to glycogen. Glucocorticoids induces insulin resistance thus raises glucose levels.
suppressing insulin release will be another option.
Therefore all options are correct.
Explanation:
Which of these statements are accurate? Hexokinase is a type of transferase that catalyzes the transfer of a phosphoryl group from ATP to a hexose. Hexokinase transfers the terminal phosphate of ATP to carbon 3 of glucose. The conformational shift that occurs when glucose, but not water, enters the active site prevents water from hydrolyzing ATP. Hexokinase consists of two domains, or lobes, that come together when glucose and the MgATP2–MgATP2– complex are bound. Most kinases require the presence of a monovalent metal ion cofactor to prevent ATP hydrolysis. Hexokinase is found in the mitochondrial membrane.
Answer:
A. The conformational shift that occurs when glucose, but not water, enters the active site prevents water from hydrolyzing ATP. True
B. Hexokinase consists of two domains, or lobes, that come together when glucose and the MgATP2–MgATP2– complex are bound. True
C. Hexokinase is a type of transferase that catalyzes the transfer of a phosphoryl group from ATP to a hexose. True
Explanation:
A. Hexokinase suffers and conformational changes by binding glucose in a reaction that prevents ATP hydrolysis.
B. Hexokinase is an enzyme with two domains that function by binding to the substrate (i.e., glucose). The region linking both protein domains is responsible for the catalytic activity.
C. Hexokinase is a type of transferase that catalyzes the transfer of a phosphoryl group from ATP to a hexose. During the first stage of glycolysis, the hexokinase transfers one phosphorous group from magnesium-ATP (Mg-ATP) to one hexose molecule, such as fructose, mannose or glucose.
False statements:
- Most kinases require the presence of a monovalent metal ion cofactor to prevent ATP hydrolysis. False: In canonical kinases, conserved amino acids bind to divalent metal ions before the transference of the phosphate group to their substrates.
- Hexokinase is found in the mitochondrial membrane. False: Hexokinase is found in the cytosol.
- Hexokinase transfers the terminal phosphate of ATP to carbon 3 of glucose. False: Hexokinase catalyzes the transfer of the terminal phosphate ATP to form glucose 6-phosphate.
What must occur in order for a matter to change states? A: Heat must be added or removed B: A chemical change must occur C: Other substances must be added D: The temperature must change
Answer:a chemical change must occur to change states
Explanation:
Chemical changes are irreversible, physical changes however dont affect the structure of the molecule of whatever it is
Answer:
Hey!
Your answer is A: Heat must be added or removed
Explanation:
For example...
To change water from a liquid to a solid, you have to change its molecular composition and change the bondages between the Hydrogen and Oxygen molecules...
This is only done when you add heat / remove through Vaporization / Condensation!
To change a substance's state is a REVERSIBLE process meaning you have to add or remove energy (heat) to change its state!
In humans, oculocutaneous (OCA) albinism is a collection of autosomal recessive disorders characterized by an absence of the pigment melanin in skin, hair, and eyes. That is, normal pigmentation (A) is dominant over albinism (a). For this question, assume it is a single gene with two alleles. Assume it is a single gene with two alleles. If two people have normal pigmentation, what possible phenotypes may be observed in their offspring?
Answer:
The definition of the problem is listed in the explanation segment below.
Explanation:
The parent phenotype is an albino on every one of them. Albino gene seems to be located primarily while it has its whole genotypes in such a recessive state called "aa". When this trait becomes autosomal, it does have an equivalent amount of alleles across both parent members. The gametes including its albino genotypes.⇒ [tex]Mother \ aa\times Father \ aa[/tex]
⇒ [tex]a\times a[/tex]
Genotype including its offspring - albino. Well, all offspring will also have albino phenotypes.So that the above is the right answer.
The results of gel electrophoresis are shown below. What can you determine
about the DNA from looking at the results of this test?
electrode
A. Strand 1 is the smallest.
B. Strand 2 is larger than strand 3
C. Strand 3 is larger than strand 4.
D. Strand 4 is the smallest
Answer:
A
Explanation:
Gel electrophoresis is an amazing technique that allows for DNA separation based on size (as in, length). Using electricity (and keeping in mind that DNA has a negative charge because of the phosphate groups), the shortest pieces will migrate the farthest.
So we can tell that the pieces are in ascending order of size. 4>3>2>1, in length.
A. Strand 1 is the smallest.
Answer:Given results of gel electrophoresis shows that strand 1 is smallest. The pieces are arranged in ascending order of size 4>3>2>1 . Thus,option A is correct.
Explanation:
What is Gel electrophoresis?
Gel electrophoresis is a laboratory technique used to separate mixture of DNA ,RNA or protein according to their molecular size.
The gel used in this technique is composed of polyacrylamide or agarose.
The main application of gel electrophoresis has been in the seperation of molecules and in restriction mapping.
The main advantage of gel electrophoresis is its capability to
simultaneously separate various samples in one round.
Therefore, strand 1 is the smallest according to the result of gel electrophoresis shown in figure. Thus, option A is correct.
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Why to use small beads for immobilizing enzymes
Answer:
Explanation:
Effects of bead size and bead amount on enzyme activity. Beads containing crude enzyme were prepared in the presence of sodium alginate (2% w/v) in CaCl 2 (5% w/v) solution. Each treatment was performed in triplicate.
A variety of factors influence enzyme activity. Substances that bind to the enzyme and interfere with substrate binding or catalysis are inhibitors. Identify the type of inhibition associated with each of the descriptions and examples by classifying each statement as irreversible, competitive, or mixed inhibition.
Answer:
Explanation:
Irreversible inhibitors are inhibitors whose action are not reversible. They function by modifying enzyme in a covalent way leading to the formation of new functional group.
Irreversible inhibitors are specific to certain enzymes. Examples is inhibitor that are suicidal they makes inhibitor reactive.
Competitive inhibition are Inhibitor that are competitive in nature they resemble one of the substrate of the enzyme and are been bind to by mistake. Example is an inhibitor that resemble folate an enzyme substrate. Enzyme therefore binds to the inhibitor assuming its folate because they are identical.
Are tanning beds safe?
Answer:
Tanning beds are NOT safer than the sun.
Explanation:
Science tells us that there's no such thing as a safe tanning bed, tanning booth, or sun lamp. Just one indoor tanning session can increase the risk of developing skin cancer (melanoma by 20%, squamous cell carcinoma by 67%, and basal cell carcinoma by 29%).
______ is the process responsible for the situation above. This process can cause DNA to change in many ways. Three such ways are ______, _____, and _____.
Answer:
Explanation:
Mutation can cause a change in DNA to change in many ways.
Mutation is the sudden change in the genome of an organism that can be heritable from parent by their offspring.
Missense mutation - This occur when a base pair is substituted for by another leading to the formation of an entirely new amino acid.
Nonsense mutation - This occurs when a base pair is substituted for by another leading to the formation of a new amino acid. The new amino acid form therefore send a stop signal to the sequence of amino acid been built.
Insertion or deletion - Insertion mutation inserts new base pair into the sequence changing the number of the DNA base while deletion deletes a base pair changing the number of DNA base from the amino acid sequence.
Describe the typical principles used to identify topogenic sequences within proteins and how these principles can be used to develop computer algorithms. How does the identification of topogenic sequences lead to prediction of the membrane arrangement of a multipass protein
Answer:
Topogenic sequences share a series of structural features, and thereby computational algorithms can be used to predict these protein-membrane segments
Explanation:
Topogenic sequences are protein segments formed by alpha-helical transmembrane domains, which are required for the insertion of membrane proteins. These domains share a series of well-defined features: they are composed of segments of about 20 hydrophobic amino-acid residues. In consequence, computational algorithms can be designed to identify protein patterns that fulfill these structural requirements (i.e. segments with a length of 20 residues, hydrophobic level, etc). The models assign a similarity threshold (threshold value) that predict if the similarity level of the protein pattern is good enough to detect a topogenic segment.
What phase does homologous chromosomes are separated
Answer:
Anaphase 1
Explanation:
Arrange the isotopes of oxygen and carbon in order of decreasing number of neutrons.
Rank the isotopes from most o fewest neutrons. To rank items as equivalent, overlap them.
Answer:
C-12 > C-13 > C-14,O-16 > C-16,O-18
Explanation:
Generally, isotopes are described as atoms of the same elements with the same atomic number but different number of neutrons.
Hence,
For O-18, oxygen has an atomic number of 8 and neutron number of 10.
For C-14, carbon has an atomic number of 6 and neutron number of 8.
For C-13, carbon has an atomic number of 6 and neutron number of 7.
For C-16, carbon has an atomic number of 6 and neutron number of 10.
For carbon 12, carbon has an atomic number of 6 and neutron number of 6.
For O-16, oxygen has an atomic number of 8 and neutron number of 8.
Hence the rank from the fewest neutrons would be C-12>C-13>C-14,O-16>C-16,O-18
Photon energy is proportional to which of the following?
period of the light wave
frequency of the light wave
speed of the light wave
color of the light wave
PLZ ANSWER 20 POINTS
Do all vertebrates have the same number of bones? Please answer
Answer: no
Explanation: vertebrates vary in sizes and shapes! humans have 206 bones but when born they have 300!
wild right?
Answer:
no
Explanation:
humans have 206 bones when you where born you have 300
Chris talked to his grandma on the phone, and she asked what birthday presents he received. Chris picked up a toy bat
and said, "This is what I got,"fully expecting his grandma on the other end of the phone to see the toy bat, too. What
aspect of development is Chris showing?
concrete operations
egocentrism
abstract thinking
sensory motor skills
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Answer:
I think it's concrete operations
Answer:
1
Explanation:
Drag the tiles to the boxes to form correct pairs match the type of water with the location in which it is found
The correct answers are water vapor- atmosphere; surface water -river; ice- glacier; and groundwater -well
Explanation:
Water is an abundant substance on Earth that exists in all states in it. This includes liquid water, which can be found on the Earth surface in water bodies such as rivers, oceans, lakes, ponds, etc. This implies the word that matches surface water is rivers. Additionally, this type of water is usually the ecosystem for many organisms. Besides this, liquid water can be found under the surface, which is known as groundwater, this is located under rocks and soil, despite this, it can be extracted and used for consumption, and one way to do this is through wells. Thus, the word that matches groundwater is well.
On the other hand, water can be found in a gaseous state as this evaporates from the surface of Earth, then raises to the atmosphere, and forms clouds. Thus, the main source of water vapor is the atmosphere. Also, this changes its states as it condensates and falls in the form of rain. Finally, water can be found in solid-state in ice, which is abundant in glaciers, the poles of the Earth, and at high elevations, because ice is the result of water being exposed to low temperatures. Thus, the word that matches ice is glacier.
Answer:
Ice: glacier
Groundwater: A Well
Water Vapor: Atmosphere
Surface Water: The river
Explanation:
PLATO answers
phosphate from atp is removed to make adp and a free phosphate molecule
Answer:
ATP is a nucleotide consisting of an adenine base attached to a ribose sugar, which is attached to three phosphate groups. ... When one phosphate group is removed by breaking a phosphoanhydride bond in a process called hydrolysis, energy is released, and ATP is converted to adenosine diphosphate (ADP).
Fat mobilization is the breakdown of fats in adipose tissue into metabolic products that enter the bloodstream place the steps of fat mobilization in order
Actual Answer:
1) body releases epinephrine
2) epinephrine binds to fat cells in adipose tissue
3) tricylglycerols are hydrolyzed to glycerol & fatty acids
4) metabolic products enter the bloodstream
Answer:
The complete steps are:
1. Body needs energy for activity
2. body releases epinephrine
3. epinephrine binds to fat cells in adipose tissue
4. triacylglycerols (triglycerides) are hydrolyzed to glycerol and fatty acids
5. Fatty acids transported to tissue
Explanation:
Mobilization of fat is a gluconeogenetic process (a process that sequesters energy from a compound other than carbohydrates), in which fat molecules in the adipose tissues are metabolized for energy production.
The process starts when the body is in an energy-deprived (hypoglycemic) state, leading to the release of glucagon by the pancreas and the release of epinephrine (adrenaline) from the adrenal medulla of the brain.
These hormones activate gluconeogenesis and glycogenolysis (breakdown of glycogen) in the liver, it also activates lipolysis in the muscle cells and liver, as well as inhibiting fatty acid synthesis. This is mediated through the binding of these hormones to specific receptors on the surface of fat cells, leading to the activation of lipases (enzymes catalyzing lipolysis). Lipases catalyze the hydrolysis of triglycerides (common fat in diets) to glycerol and three molecules of free fatty acids. These free fatty acids are released into the blood where they attach to serum albumin; a protein for transporting the hydrophobic fatty acids to the muscle cells where they are taken up and utilized to produce energy and C0₂.
Which step of the scientific method do you perform after you collect data and
observations?
Answer: Draw a conclusion about your hypothesis
Explanation:
If the results match up, then the data supports the hypothesis and thus, the hypothesis itself SUPPORTS the idea that you're studying. Afterward, discuss the experiment with your peers.
Never say that a hypothesis has been proven, because you are not proving anything, it is support.
what is the function of the pancreas
Explanation:
the function of the pancreas that it secretes enzymes that work in tandem with bile from the liver and gallbladder to help breakdown substances for proper digestion and absorption.
Answer:
Releases insulin.
Explanation:
Which of the following is true regarding limestone and dolostone? Group of answer choices A.Limestone only visibly reacts to acid if powdered. B.Dolostone only visibly reacts to acid if powdered. C.They both react to acid in their solid form. D.They are very similar, except limestone has magnesium in addition to calcium carbonate.
Answer: B.)
Explanation:
The statement is true regarding limestone and dolostone is as follows:
Dolostone only visibly reacts to acid if powdered.Thus, the correct option is B.
What is Dolostone?Dolostone may be defined as a sedimentary carbonate rock that possesses a high percentage of the mineral dolomite, CaMg(CO3)2.
Limestone is composed of the mineral calcite (CaCO3), while dolostone is composed of the mineral dolomite. They are both very similar to one another.
Limestone reacts with acids in solid form while dolostone visibly reacts with acids, if powdered.
Therefore, the correct option for this question is B.
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Select the correct answer.
Why is the Circum-Pacific belt shown on this map called the Ring of Fire?
OF
Aleutian trench
Mt. Garibaldi
Mt St. Helens
RUNG
Kunie trench
Japan trench
izu Ogasawara trench
Ryukyu trench
Philippine
Mt Piatubod trench
Marianas trench
y Mayon
Challenger Deep
Krakatoa
Bougainville trench
FIRE
Middle America
trench
Equator
Java (Sunda)
trench
Tonga trench
Peru-Chile trench
Kermadec trench
ОА.
ОВ.
C.
A fire burns continuously there.
It is prone to earthquakes and volcanoes.
The entire region has a high risk of wildfires.
The best fireworks happen there.
These regions are on the equator and receive direct sunlight.
OD
O E.
Answer:
B
Explanation:
The Ring of Fire, also referred to as the Circum-Pacific Belt, is a path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes.
Suppose Stephen breeds snakes and wants to optimize production of offspring with both black bodies and brown eyes, which are coded for by two genes with the recessive alleles b and e, respectively. In snakes, B codes for brown bodies and E codes for red eyes. Stephen crosses two heterozygotes that produce 544 offspring. How many of these 544 offspring are predicted to have both black bodies and brown eyes?
Answer:
34
Explanation:
B codes for brown bodies.
E codes of red eyes.
b and e together code for black bodies and brown eyes.
Heterozygous brown body snake would have the genotype Bb.
Heterozygous red eyes would have the genotype Ee.
Individuals that are heteozygous for both trait would have the genotype BbEe.
Crossing two heterozygous individuals:
BbEe x BbEe
Progeny:
9 BBEE
3 B_ee
3 bbE_
1 bbee
Recall that black bodies and brown eyes requires be, hence the ratio of the progeny with black bodies and brown eyes is 1/16.
If the total number of offspring produced is 544, the number predicted to have black bodes and brown eyes would be:
1/16 x 544 = 34
Technology is often used in farming and agriculture. For example, farmers often use airplanes to spray chemicals on crops rather than spraying smaller amounts by hand. Which of the following is a negative side of using this technology?
7. A similarity between New Zealand and Australia is that- *
the native populations in both countries are the Aboriginies.
the monarch for both countries is Queen Elizabeth II.
neither country depends on tourism to boost their economy.
the nickname "Kiwi" refers to both Australians and New Zealanders.
Answer:
the monarch for both countries is Queen Elizabeth II.
Explanation: They are Island nations of the south Pacific.
The two countries were colonized by Abel Tasman, but were colonized by the British.Therefore recognized the Queen as the monarch. They both have a stable society and progressive movements. Both countries have good standard of living, with high sense of innovation and share almost the same type of food, wines, culture and music. They also have one of the best Diary farms in the world. They love the same sports-Rugby.