Answer:
D. It allows some molecules to pass through but prevents others from doing so.
Explanation:
Plasma membrane or cell membrane is a selective permeable membrane which allows light molecules to pass and prevents heavy molecules.
Hope this helps ;)❤❤❤
GEOLOGY Please help, need to turn it. Summarize the relationship between the composition, temperature, and volatile content of magmas and effusive vs. explosive eruptions.
Answer:
The classification of the single issue is outlined in the section represented in segment explanations below.
Explanation:
The highly unstable magma composition consists of small quantities of water as well as sewage, published as pressure decreases. The magmas established by regional metamorphism are also richly volatile in nature.The affectionate eruption has become a category of the explosion where the lava spreads rapidly at the on-the-surface eruption, individuals are most prevalent in sedimentary magmas, often occur spontaneously. Because of elevated heat, the fuels are withdrawn throughout magmas.However, in volcanic explosions, the magmas have been most aggressively ejected from the volcano whenever pressure at either the exhaust pipe is abruptly actually reduced.9. A finch population has genetic diversity. Some of the finches have an allele that gives them
longer beaks. Due to pollution, the ecosystem changes and seeds become harder to find. The
finches with long beaks can dig the seeds out more easily than the finches with short beaks.
a) Which type of bird is selected for in the polluted ecosystem?
b) How will the allele frequency change in the finch population?
c) is this an example of natural selection explain
Answer:
A) the finch with the longer beak
B) the allele will continue to become more prominent as the smaller beak birds die off
C) Yes, the birds with the longer beaks will continue to live on because the birds with the smaller beaks can’t find the seeds as easily.
Explanation:
Seeds are harder to find, so finches with larger beaks get selected in a polluted environment. This is a natural selection. If this continues, then the alleles for short beak will vanish.
What is natural selection?
Natural selection is a process in which nature selects an organism that can fit well. If an allele is selected in a population and present for a longer time, then it replaces other alleles in that population. Example: In a population, both short-beaked and long-beaked finches are present.
Due to pollution, long-beaked finches are able to find more seeds than short-beaked finches. Here, nature favors long-beaked finches over short-beaked finches. If this continues for a longer generation, then alleles for the short beak will vanish. Only alleles for long beaks will be in the population.
Hence, long-beaked finches are selected. It is an example of natural selection. The allele frequency of the long beak will increase while decreasing for the short beak.
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The function of hemoglobin is to The function of hemoglobin is to stimulate erythropoiesis. carry dissolved blood gases. carry bicarbonate ion. produce antibodies. aid in the process of blood clotting.
Answer:
Carry dissolved blood gases
Explanation:
Haemoglobin is a protein usually found in the red blood cells and is said to be what give the blood its characteristics red color.
Haemoglobin is a protein that also contain some iron atoms which binds oxygen; a gas to itself and aid in the transport of oxygen from the lungs in some group of animals and gills in others to the rest of the body allowing for aerobic respiration to occur in the body.
2. Where could you access research material or other
information that would help inform you understanding
about the importance of identifying biological molecules
and how each of the tests work?
Answer:
ljfkrejdmnc bdkcbkjdbjckbdkj idbb b b b
Explanation:
Biological molecules are involved in the process of life. The research material that enables understanding of the biological molecules and their analysis can be accessed from library databases and research tools.
What are biological molecules?Biological molecules have been defined by the organic and inorganic compounds that are present and function in the living cell. They are considered the fundamental unit of life that consists of "carbon, oxygen, hydrogen, sulfur, and nitrogen molecules".
The online research tools and library databases of various research universities are the best places where one can access the research materials and information that allows the understanding of the importance of the biological molecules and the tests used to identify them.
Therefore, libraries and databases are used to get research information.
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Why do you think the eukaryotic DNA requires multiple origins of replication?
A.
Multiple origins help make more copies of the same DNA simultaneously.
B.
Eukaryotic organisms have unique DNA strands for each specialized cell.
C.
Eukaryotes do not have topoisomerase, so multiple origins are created due to tension from unwinding of DNA strands.
D.
Eukaryotic DNA is much larger and replication at multiple origins helps reduce the time required for whole genomes to replicate.
E.
Multiple origins of replication ensure that there are no lagging strands and replication takes place at the same pace.
.
Answer:
D.
Explanation:
Prokaryotic DNA exhibit single origin of replication while eukaryotic DNA has multiple origins of replication because eukaryotic DNA is much larger and multiple origin of replicate helps them to replicate the whole genome in short time duration.
Large DNA of eukaryotes contain high amount of material to be replicated and multiple origin sites helps them to replicate in short time. DNA replication initiate at each origin site independentaly and terminate at corresponding termination sites.
Hence, the correct answer is D.
Answer:
D
Explanation:
i took the test
Explain how nondisjunction can lead to aneulodies
Answer:
nondisjunction can lead to aneulodies by results in daughter cells with abnormal chromosome numbers (aneuploidy). (if u want a more in depth answer just look it up and you'll find one, but i hope this was somewhat helpful lol)
A triglyceride molecule consists of: a. two trans-fatty acids attached to a sterol molecule b. three fatty acids attached to a molecule of glycerol c. three sterol molecules bonded to a molecule of glycerol d. three glycerol molecules e. three trans-fatty acids attached to a sulfur atom
Answer:
d. three glycerol molecules
Explanation:
Hope it helps.
Which of the following are formed during photosynthesis?
A. C6H1206 and 02
B. C2H4O2 and H20
C. C2H4O2 and 02
D. C6H1206 and H20
During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose. The plant then releases the oxygen back into the air, and stores energy within the glucose molecules.
Explanation:
Leon was a relatively successful attorney before developing schizophrenia. He has now stopped working and prefers to wander the streets in preparation for an "airlift" of humans by extraterrestrials. He has lost all his property and stays on the streets. His poverty has further aggravated his psychotic symptoms. Leon's story lends credibility to which hypothesis regarding the relationship between social class and schizophrenic symptoms?
A. Social causation hypothesis
B. Milieu hypothesis
C. Downward social drift hypothesis
D. Double bind hypothesis
Answer:
C. Downward social drift hypothesis
Explanation:
In the scenario, being described Leon's story lends credibility to Downward social drift hypothesis. This hypothesis states that there is a clear relationship between mental illness and social class, in which the illness leads the individual to have a downward shift in social class. This is the case with Leon, since he was an upper-class individual until he developed schizophrenia, which ultimately caused him to drop lower and lower in social classes. All the way down to homeless.
Instructions on how to control your cells are contained in what part of the DNA?
Answer:
Genes
Explanation:
The genes are specific fragments of the DNA molecule that contain the information necessary to synthesize different types of RNAs, including messenger RNAs (mRNAs) which are subsequently translated into proteins required for different cellular functions including replication, cell cycle, proliferation, apoptosis, etc. Genes are first transcribed to RNA during transcription. In eukaryotic organisms, the genes contain both exonic and intronic sequences that are jointly transcribed into the primary mRNA, and then the introns are removed during RNA splicing. The genes have a specific initiation signal sequence known as start codon (AUG) and termination codons (UGA, UAA, UAG) that terminates the translation of the mRNA.
What happens when organisms populate a new area and are isolated geographically from other populations of the same species?
Answer:
The geographically isolated population will acquire genetic differences that eventually will lead to its speciation
Explanation:
Geographic isolation is a biological process produced by the physical separation between organisms of the same species, which may be caused by different types of geographical barriers such as, among others, mountains, earthquakes, rivers, etc. Geographic Isolation produces genetic differences between the separated groups. Over time, these genetic differences will lead to the reproductive isolation of the new population, thereby leading to the formation of a new species in the course of evolution, in a mechanism referred to as speciation.
An eight-year-old boy dramatically increased his upper body strength after following a six month resistance training program. Which of the following is most likely responsible for this gain?
A. Increased number of muscle fibers
B. Enhanced cross-sectional area
C. Greater muscle density
D. Improved neuromuscular functioning
Answer: D. Improved neuromuscular functioning
Explanation:
The neuromuscular functioning is one of the main reason for a person to become stronger, so the correct answer will be this one.
CAN YOU MARK ME BRAINLIEST?
The goal of a statement of purpose is:
Answer:
Explanation, answer, persuade
Explanation:
a statement is a sentence with a period at the end of the sentence.
you can answer, and explain without using a question mark, or an exclamation mark
and of course, you can persuade with a period, question mark, or with an exclamation mark
( plz mark me as brainliest, that would be most appreiciated! )
If a mutation occurs in a somatic cell that leads to a non-functional protein, what will happen to that somatic cell?
A. It will prevent the cell from completing the cell cycle.
B. It will enable the cell to fix the mutation.
C. It will prevent the cell from finishing the S phase.
D. It will continue through the cell cycle as normal
If a mutation occurs in a somatic cell that leads to a non-functional protein, what will happen to that somatic cell?
A. It will prevent the cell from completing the cell cycle.
B. It will enable the cell to fix the mutation.
C. It will prevent the cell from finishing the S phase.
D. It will continue through the cell cycle as normal
Which of the following is correct about the polyadenylation mechanism?
Answer:
a long chain of adenine nucleotides is added to the 3' end of mRNA during termination of transcription
Explanation:
how does the nucleus control which proteins are made by the ribsomes
Answer: They receive their “orders” for protein synthesis from the nucleus where the DNA is transcribed into messenger RNA (mRNA).
Explanation: This mRNA travels to the ribosomes, which translate the code provided by the sequence of the nitrogenous bases in the mRNA into a specific order of amino acids in a protein.
Marissa is testing a hypothesis through experimentation. She believes that immersing ocean coral in carbonic acid will slow the coral’s growth. Which of these actions will prevent Marissa from introducing confounding variables into her experiment?
Answer:
The answer choices to this question are:
A) She releases cement particles into a random number of the coral samples.
B) She uses three different types of coral to establish her dependent variables.
C) She treats the coral samples identically with varying levels of carbonic acid.
D) She obtains her coral samples from coral reefs surrounding different continents.
Best Answer is:
A) She releases cement particles into a random number of the coral samples.
Theory:
It has been researched that ocean acidification caused by carbon dioxide emissions causes a decrement in the coral reef growth and this will keep slowing down unless steep and rapid reductions in greenhouse gas emissions are made. And the Coral reefs offered economic opportunities would advantage the surrounding communities from fishing and tourism.
i did this question so thats why i know the answer choices
hope this helpsss
Answer: C. She treats the coral samples identically with varying levels of carbonic acid.
Explanation: I just took the test and this is correct
Which is one common property of inorganic substances? They are solid at room temperature. They are poor conductors of electricity. They contain carbon. They burn readily.
Answer:
They are solid at room temperature.
Explanation:
Inorganic substances are substances that does not have carbon and hydrogen. Most inorganic compounds are metals or alkali metals which make them to be able to conduct electricity.
They are solid at room temperature which make them to be poor conductor of electricity at solid state. In the solid state, the individual particles of a substance are in fixed positions to each other because there is not enough thermal energy to be able to overcome the intermolecular interactions between the particles.
The graphic shows the citric acid cycle. A diagram of the citric acid cycle is shown. Acetyl C o A enters the citric acid cycle and combines with a 4-carbon compound to form citric acid. During the citric acid cycle, what happens to acetyl-CoA? It enters the citric acid cycle and gains carbon dioxide to form citric acid, and gains more carbon dioxide through redox reactions to form a 4-carbon molecule. It enters the citric acid cycle and associates with a 4-carbon molecule, forming citric acid, and then through redox reactions regenerates the 4-carbon molecule. It enters glycolysis and associates with a 5-carbon molecule through redox reactions, forming another acetyl-CoA molecule. It enters the citric acid cycle and associates with a 4-carbon molecule, forming a 5-carbon compound, and then through oxidation reactions regenerates the 4-carbon molecule.
Answer:
It enters the citric acid cycle and associates with a 4-carbon molecule, forming citric acid, and then through redox reactions regenerates the 4-carbon molecule.
Explanation:
Acetyl-CoA(2C) associates with oxalacetate(4C) to form citric acid(6C). Then through redox reactions, CO2 molecules result from decarboxylation (COOH becomes R-(R1)CH-R2). And through dehydrogenation H2 molecules are incorporated in NADH+ in FADH2, resulting in the 4-carbon molecule at the beginning (oxalacetate). That's why it's called a cycle(Kreb's cycle or citric acid cycle)
In the citric acid cycle, when acetyl-CoA enters the cycle, it associates with a 4-carbon molecule (Oxalacetate), forming citric acid, and then through redox reactions regenerates the 4-carbon molecule (Oxalacetate).
--------------------
The resumed steps of the Citric acid cycle are as follows,
1) Acetyl CoA joins an oxaloacetate molecule, which is a 4C molecule. They release the CoA group and form a 6C molecule called Citrate.
Acetil CoA + Oxalacetato → Citrato + CoA group
2) Citrate turns into an isomere Isocitrate
3) Isocitrate oxidates and release 1 CO₂ molecule, producing an α- ketoglutarate molecule -this is a 5C molecule-. Meanwhile, NAD+ reduces to NADH.
Isocitrate + NAD+ → α-cetoglutarate + CO₂ + NADH
4) α-ketoglutarate oxidates and release 1 CO₂ molecule, producing a 4C molecule, which joins a Coenzyme A producing Succinyl-CoA. Meanwhile, NAD+ reduces to NADH.
α-cetoglutarate + NAD+ → 4C molecule + CO₂ + NADH
4C molecule + Coenzyme A → Succinil-CoA
5) CoA from Succinyl-CoA is substituted with a phosphate group, which then forms ATP. The final product is Succinate and ATP
Succinyl-CoA + Phosphate group + ADP → Succinate + ATP + CoA
6) Succinate oxidizes and forms Fumarate, a 4C molecule. FAD+ forms FAH₂
Succinate + FAD+ → Fumarate + FADH₂
7) A water molecule and Fumarate produce Malate, which is another 4C molecule
Fumarate + H₂O → Malate
8) Finally, malate oxidizes and oxalacetate regenerates -the initial 4C compound-. NAD+ reduces to NADH.
Malato + NAD+ → Oxalacetate + NADH
So, when acetyl-CoA enters the cycle, it associates with a 4-carbon molecule (Oxalacetate), forming citric acid, and then through redox reactions regenerates the 4-carbon molecule (Oxalacetate).
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Please help :( !!!
Which statement summarizes a change that occurs during photosynthesis?
Answer:
It converts light energy to chemical energy.
Explanation:
Fill in the blanks below with apropriate words:
a. Mentalis
b. Masseter
c. Frontalis
d. Sternocleidomastoid
e. Stylohyoid
f. Zygomaticus major
g. Digastric
h. Orbicularis oris
i. Hyoglossus
1. ____________elevates and protrudes lower lip.
2. _____________is a major chewing muscle.
3. _____________ raises the eyebrows. Sternohyoid .
4. _____________originates on the sternum and clavicle.
5. _____________one of the smiling muscles.
6. _____________consists of two bellies.
7. _____________depresses the tongue.
Answer:
1. Mentalis
2.Masseter
3. Frontalis
4. Sternocleidomastoid
5. Zygomaticus major
6. Digastric
7. Hyoglossus
Explanation:
1. Mentalis is a muscle which elevates and protrudes lower lip.
2. Masseter is a major chewing muscle. It is essential for mastication of substances in the mouth.
3. Frontalis raises the eyebrows.
4. Sternocleidomastoid originates on the sternum and clavicle.
5. Zygomaticus major is known as one of the smiling muscles. It is responsible for smiling and facial expressions.
6. Digastric consists of two bellies which are muscle masses and it is found between the jaw and skull.
7. Hyoglossus originates from the hyoid bone and it depresses the tongue.
The chromosome undergoes a transloation mutation during its replication. Which image best represents the translocation
What is Aquatic Habitat
habitat is physical enviroment in 2hich an animal or plant is usually found.
Answer:
An aquatic habitat is a habitat with water. It includes areas that are permanently covered by water and surrounding areas that are occasionally covered by water. Estuaries, rivers, and marshes are examples of aquatic habitats.
Explanation:
An aquatic ecosystem is an ecosystem in a body of water. Communities of organisms that are dependent on each other and on their environment live in aquatic ecosystems. The two main types of aquatic ecosystems are marine ecosystems and freshwater ecosystems.
Good luck. ... Brainliest please
Which animals are vertebrates
Answer:
Animal which have backbone in their body are called vertibrates. eg:tiger,human,bear
Answer:
Animals that have a backbone are vertebrates. those include mammals, birds, fish, amphibians and reptiles.
examples are humans, cows, snakes, frogs etc....
01:53:26 The main factors that determine the amount of runoff in an area include the shape of the land, how people use the land, the type of soil, and: a. amount of soil and vegetation b. amount of rain and vegetation c. amount of rain and amount of soil d. amount of rain and rock formations
Answer:
a
Explanation:
since runoff can be caused by little rainfall but in abundance of vegetation then it may decrease since they stop or slow down it's flow but runoff can not be affected by rocks since the velocity may even wear it
Answer:
The answer is a
Explanation:
i took the test its not that hard but its ok <3
Norepinephrine and epinephrine influence all of the following except __________ functioning. A. heart B. lung C. nervous system D. sex drive
Hey Again!!
Your answer will be D. Sex drive.
Hope This Helps <3!!
By ☆Itsbrazts☆
Answer:
Hey!
Your answer would be D. Sex drive!
Explanation:
Hope this helps!
:>
What do neurotransmitters do? A. Cause the pre-synaptic neuron to open voltage-gated gates. B. Diffuse across the synaptic cleft and bind to specific receptor sites on the post-synaptic cell. C. Cause calcium to diffuse across the synaptic cleft and bind to specific receptor sites on the post-synaptic cell. D. Diffuse synaptic vesicles which releases molecules into the synaptic cleft.
Answer:
D. Diffuse synaptic vesicles which releases molecules into the synaptic cleft.
Explanation:
Hope it helps.
Answer:
B.
Explanation:
Diffuse across the synaptic cleft and bind to specific receptor sites on the post-synaptic cell.
How does the cell wall protect a plant cell? A) The cell wall protect the cell by providing support and maintaining the cell's shape. B) The cell wall protects the cell by storing food so the plant doesn't run out. C) The cell wall is thin and flexible, which allows the cell to be moved without harming the organelles. D) The cell wall is on inside of the cell and serves to contain the contents of the cell.
Answer: the cell wall protects the cell by providing support and maintaining the cells shape
Explanation:
The cell wall protects the cell by providing support and maintaining the cell's shape.
CELL WALL:
The cell wall is a structure found in certain cells like plant cells, Bacteria cell etc. The cell wall is located outside the cell and bounds the cell content. The cell wall of plants majorly contain a polysaccharide called cellulose. The cellulose content of plants cell wall is responsible for its protective function by giving the cell a rigid shape. The plant cell wall helps protect the plant cell by providing support and maintaining the cell's shape.Learn more at: https://brainly.com/question/11898425?referrer=searchResults
Which statement best describes how Watson and Crick's model used other scientists' work to create a model of DNA? They used Chargaff's rule to determine that it contains ribose sugar. They used Franklin's photo to determine that DNA was a double helix. They used Levene's work to determine the number of base pairs in each strand. They used Nirenberg and Matthei's studies to determine that DNA is made of nucleotide
Answer:
The correct statement is-
They used Chargaff's rule to determine that it contains ribose sugar.
They used Franklin's photo to determine that DNA was a double helix.
Explanation:
Watson and Crick used pieces of information available from different researchers such as Chargaff's rules and Franklin.
Chargaff had explained that of the four kinds of nucleotides are present in a DNA molecule in such a manner that 2 types of nucleotides were always present in the same amounts and the other 2 types of nucleotides were also always present in same amounts.
The first X-ray picture of DNA, created by Rosalind Franklin using a technique known as X-ray crystallography, which led to Watson and Crick's model of DNA. It explained the helical shape of the DNA molecule.
The correct statement is-
They used Chargaff's rule to determine that it contains ribose sugar.
They used Franklin's photo to determine that DNA was a double helix.
Answer:
They used Franklin's photo to determine that DNA was a double helix.
Explanation:
Which of the following evidence must be stored in an airtight container? Bullet Casings, Gun Magazines, Hair, Wet Fluids, Tire Track Casts
Answer:
gun magazines
Explanation:
the others don't make sense.