Answers
Answer:
never become laws
Explanation:
trust
Related Questions
Name the landscape region that contains the youngest rock material.
Answers
Surtsey is a volcanic island that was formed off the coast of iceland in the 1960s. After the eruption that created the island, organisms slowly arrived and grew on the island. The first organisms were some bacteria and fungi. Within about two years, the first vascular plants had arrived and by the end of the first decade there were 10 species of vascular plants on the island. Forty years later, there were about 60 species of vascular plants. What is likely true about this situation
Answers
Answer:
The first organisms were some bacteria and fungi.
Explanation:
The first organisms were some bacteria and fungi on the Island of Surtsey because these bacteria and fungi are present in the surrounding air which can easily reach to that Island. The bacteria and fungi make the environment favourable for the growth of plants and animals. These bacteria and fungi ready the ground for the plants so that they can grow easily with the passage of time.
Surtsey an volcanic islandic island lies in V. archipelago that is the southern coast of island. It was created by a volcanic eruption at 130 meters below sea level.
After the eruption of the volcano on the island, some vascular plants have been found to grow on the northern shores. Mosses were found in 1967. and the lichens were the first to be found. Now the island is covered by the presence of mosses and lichens. This shows within about two years, the first vascular plants had arrived and by the end of the first decade, there were 10 species of vascular plants on the island.Learn more about the volcanic island that was formed off the coast.
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Cystic fibrosis is a disease. Find out a little about what it does, whether it is dominant or recessive, and whether or not gender has any bearing on the risk of inheriting the disease. Report your findings here.
Answers
Cystic fibrosis is an autosomal recessive condition caused by a mutation in the CFTR gene that alters Cl- and Na+ transport, leading to excesive mucus accumulation in aerial and digestive tracts.
What is Cystic fibrosis?Cystic fibrosis is an autosomal recessive condition in which the mutation of a diallelic CFTR gene that codes for the channel CFTR protein (cystic fibrosis transmembrane conductance regulator) is responsible for the affection.
The CFTR protein expresses in the luminal portion of the secretory and absorptive epithelial membranes, and it is involved in Cl- and Na+ transport.
Given that defects in the CFTR protein take to a defective regulation in the Na+ channel, cystic fibrosis characterizes by alterations in electrolytes secretions and absorption. There are two significant physiopathological mechanisms:
1) altered Cl- secretion in submucous glands,
2) increased Na+ absorption and consequent electrolytes hyperabsorption in the superficial epithelium.
Patients with cystic fibrosis are incapable of increasing their secretory transport. On the contrary, the increased epithelial Na+ conductance and the altered permeability to Cl- and water lead to hyperabsorption in the patient epitheliums.
The superficial liquid layer in the aerial vias decreases, mucus is not released from mucous glands, and the mucociliary clearance is strongly altered in aerial vias. Mucus accumulates in the lungs, digestive tract, and other areas.
Most people have two copies of the normal allele (h0m0zyg0us dominant genotype)and produce the functional CFTR protein form.
Patients with cystic fibrosis have two copies of the mutated allele (h0m0zyg0us recessive genotype), producing the protein's mutated and dysfunctional form.
Heter0zyg0us people possess only one normal CFTR allele and a mutated form of the same gene. These alleles are codominant, meaning that noth of them are expressed. They can produce a normal protein and a mutated protein.
Given that the normal allele produces enough functional CFTR protein, these individuals do not have any adverse effects, and the mutated allele is recessive at a physiological level.
To sum up, Cystic fibrosis is an autosomal recessive condition -not sex-linked- that causes the unfunctional form of the CFTR protein, and alters Cl- and Na+ transport. Consequently, there is an accumulation of mucus in the respiratory and digestive tract, among other organs, that might be lethal.
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What type of data is represented by the following example:
The sound of the frog's croak is louder than the sound of the cricket's chirp.
informative data
O qualitative data
O managed data
O quantitative data
Answers
Answer:
O qualitative data
Explanation:
Statistically, there are two major types of data namely: quantitative data and qualitative data. Quantitative data are those kinds of data that has to do with numbers and figures expression. For example, the length of a millipede measures 14cm etc.
On the other hand, qualitative data also called descriptive data are kinds of data that basically gives information about or describe a scientific observation. They are not numerical and hence cannot be measured. Example is the observation that the sound of the frog's croak is louder than the sound of the cricket's chirp.
what are the types of human grafts.somebody help
Answers
Allogeneic graft: The skin will be taken from another person
Isogeneic graft: The recipient and the donor will be genetically identical (identical twins)
Xenograft: Also termed as xenogeneic, the donor and the recipient will be of different species
Laboratory-grown: Under this one, the skin cells will be taken the patient or the donor, so as to grow new skin
Prosthetic: The procedure will be done using prosthetic implants, that is, synthetic materials such as metal, plastic, or ceramic
What is something that happens during translation
Answers
Answer:ribosome uses the sequence of codons in mRNA to assemble amino acids into a polypeptide chain
Explanation:
Will a lunar eclipse be visible from every place on Earth that is facing the moon? Explain the reasoning behind your answer.
Answers
Answer:
It's true that the Moon goes around Earth every month, but it doesn't always get in Earth's shadow. The Moon's path around Earth is tilted compared to Earth's orbit around the Sun. The Moon can be behind Earth but still get hit by light from the Sun. ... Unlike solar eclipses, lots of people get to see each lunar eclipse.
Explanation:
if u like this answer plz mark as brainlist and follow me
Most people need more daily allowances of servings from the what
food group
Answers
Answer:
According to the U.S. Department of Agriculture, you should consume the highest proportion of your foods from the grain group. However, you should consume almost as many portions from the vegetable group; fill your plate a little over one-fourth full with grains and add almost the same amount of vegetables.
Explanation:
An essential amino acid can be synthesized in the body if caloric intake is adequate. cannot be synthesized in the body in sufficient quantity to meet body needs. can be formed in the body from nonessential amino acids. can be synthesized in the body if there is a nitrogen source.
Answers
Answer:
cannot be synthesized in the body in sufficient quantity to meet body needs.
Explanation:
Amino acids are defined as the structural units which make up the proteins in our bodies. They help to break down foods, repair tissues, and serves many more functions.
Our body is not capable of making the essential amino acids that are required by the body. They should be come from the food we eat. And hence the essential amino acids cannot be synthesized in our body in the sufficient quantity to meet our body needs.
Which type of white blood cell is activated by antigens that are bound to antibodies?
monocytes
eosinophils
basophils
neutrophils
Answers
Answer:
basophils
Explanation:
Basophils are a class of white blood cells known as granulocyte, which also include neutrophils, eosinophils, and mast cells. These cells (basophils) are generated in the bone marrow as other white blood cells. When stimulated, basophils degranulate to release histamine, proteoglycans, and proteolytic enzymes and thus mediate immune responses. This process of degranulation occurs when a specific antigen binds to the IgE receptor on the basophil. Moreover, basophils may also be activated by inflammatory mediators (e.g., complement factors such as C5a and C3a, chemokines, etc).
whole meal bread, banana,lattuce and cabbage are a good source of
Answers
Answer:
they are good source of fibre
In a microarray analysis used to compare sporulating and nonsporulating yeast, a spot that appears yellow at a given time point is associated with a gene that is _______. View Available Hint(s) In a microarray analysis used to compare sporulating and nonsporulating yeast, a spot that appears yellow at a given time point is associated with a gene that is _______. is expressed roughly equally in both sporulating and nonsporulating yeast likely to play a role in the process of sporulation expressed in neither the sporulating nor the nonsporulating yeast present in sporulating, but not in nonsporulating yeast
Answers
Answer:
is expressed roughly equally in both sporulating and nonsporulating yeast
Explanation:
A DNA microarray (also called DNA chip) is a microchip-based testing platform which can be used to analyze and compare gene expression profiles between samples. A DNA microarray contains microscopic DNA spots attached to a solid surface, where each spot corresponds to thousands of copies of a specific DNA sequence (i.e., probes). Subsequently, cDNA 'target' molecules obtained by reverse transcription from RNA are then hybridized to a microarray. This process of hybridization can be quantified by using fluorophore-labeled targets that determine the level of the expressed gene (transcript) in the target sample. In a DNA microarray, the intensity and types of color in each spot indicate the presence and level of each specific transcribed gene in the samples. In consequence, the presence of yellow spots in the DNA microarray indicates approximately equal expression levels of the corresponding gene in both yeast samples.
Which two factors cause one part of Earth to have summer while another part
has winter?
Answers
Answer:
The earths axis
Explanation:
For the earth being on its axis causing it to be on the side so while one side is getting heat the other gets cold this also cause the days to change
who discovered that white light is a spectrum of colours rays
Answers
Answer:
Isaac Newton
Explanation:
Isaac Newton discovered that white light is a spectrum of seven colour rays.
e)Name the force provided by the leaves of tall trees which draws
more water due to adhesion.
Answers
Answer:
Capillary action
Explanation:
Capillary action helps bring water up into the roots. With the help of adhesion and cohesion, water can work it's way all the way up to the branches and leaves. Read on to learn more about how this movement of water takes place.
Question 2 of 26
A hiker adjusts a compass to account for declination, which is the angle of
difference between two directions: geographic north and magnetic north.
What is true of the adjustment?
A. The angle will be 180°, because the geographic north pole is the
same as the magnetic south pole.
B. It will need to be made again, because the magnetic and
geographic north poles both move over time,
C. It will need be made again, because the magnetic north pole
moves over time.
D. The angle will be 0°, because the geographic north pole and
magnetic north pole are in the same location
Answers
Answer:
hello again its d
Explanation:
A sperm fertilized an egg. Which two structures will the fertilized egg contact?
ovary and fallopian tubes
fallopian tubes and uterus
uterus and cervix
cervix and ovary
Answers
Answer:
B Edge 2021
Explanation:
I just took the test
When a sperm fertilizes an egg, the fertilized egg, also known as a zygote, will travel from the fallopian tube to the uterus, where it will implant and grow into a fetus. Therefore, the correct option is B.
What is a fertilized egg?A fertilized egg is also known as a zygote. It is a single cell that results from the union of a sperm and an egg during fertilization. Fertilization typically occurs in the fallopian tube of a female reproductive system when a sperm successfully penetrates and merges with the egg.
The egg is released from the ovary and travels through the fallopian tubes towards the uterus. It is in the fallopian tubes where the egg can be fertilized by a sperm, forming a zygote.
The zygote will then continue to travel through the fallopian tube towards the uterus. As it approaches the uterus, the zygote will undergo several cell divisions, forming a ball of cells known as a blastocyst.
The blastocyst will then implant into the lining of the uterus, where it will continue to grow and develop into a fetus. The cervix, which is the lower part of the uterus, plays a role in pregnancy by keeping the fetus inside the uterus during gestation and then opening to allow for delivery during childbirth.
Therefore, option B) the fallopian tubes and uterus is correct.
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Decide if each statement is a fact or a misconception about the theory of evolution by natural selection.
According to the theory,
individual organisms
can evolve during
their lifespan.
The theory suggests that
the organisms in a
population that are the
most well adapted are
those that are the largest.
The theory says that
natural selection gives
organisms everything they
need to live.
The theory explains the
origin of life.
The theory proposes that
while natural selection
acts on individuals,
only populations evolve.
The theory says that
organisms that are
better adapted to their
environments will have
higher survival and
reproduction rates.
Answers
Answer:
the theory suggests that the organisms that are well adapted to their environment will have higher survival and reproduction rates.
Answer:Natural selection is the process by which organisms are able to survive and produce offspring who use their environment successfully as compare to those which are less adapted to their environment.
The theory proposes that while natural selection acts on individuals, only populations evolve. Fact
The theory suggests that the organisms in a population that are the most well adapted are those that are the largest. Fact
According to the theory, individual organisms can evolve during their lifespan. Misconception
The theory says that organisms that are better adapted to their environments will have higher survival and reproduction rates. Fact
The theory explains the origin of life. Misconception
The theory says that natural selection gives organisms everything they need to live. Misconception
two example of viruses
Answers
Answer:
Trojanic bomb.
Polymorphic virus.
Boot sector virus.
-Coronavirus
-Rabies
-HIV (AIDS)
-Influenza
-Hantavirus
-Ebola
-Dengue
-Diphtheria
-Hepatitis
-Rubella
-Smallpox
-Measles
-HPV
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How is matter converted into energy in the sun’s core?
A. Helium isotopes decay, releasing energy in the process.
B. Hydrogen nuclei collide and fuse, releasing energy in the process.
C. Hydrogen nuclei collide and fuse, consuming energy.
D. Hydrogen nuclei split apart, releasing energy in the process.
Answers
Mary determined that 5 pollen grains could fit along the diameter of the field of view of her microscope. If each pollen grain has a diameter of 0.3mm what is the diameter in millimeters of the field of view of Mary's microscope
1.5mm
15mm
4.7mm
5.3mm
Answers
Answer:
1.5mm
Explanation:
According to this question, Mary is trying to view 5 pollen grains under her microscope. She found out that the 5 pollen grains each with a diameter of 0.3mm could fit along the diameter of the field of view of her microscope.
This means that the diameter of the field of view of Mary's microscope can be calculated as follows:
Diameter of each pollen × no. of pollen that fit in
= 0.3mm × 5
= 1.5mm
Hence, the diameter of the field of view of Mary's microscope is 1.5mm.
A point mutation that changes a codon specifying an amino acid into a new codon coding another amino acid is called: a. Deletion mutation. b. Missense mutation. c. Nonsense mutation. d. Frameshift mutation.
Answers
Answer:frame shift
Explanation:
Which hormone can be found in many fruits and can become airborne and cause over-ripening and abscission
Answers
Answer:
Ethylene is a plant hormone that is released in the form of gas. It stimulates plant cells degradation making the fruits softer and sweeter. As a result, high ethylene levels may cause fruits over-ripening and abscission.
Explanation:
please tell me the answer
Answers
Answer:
1)the process being studied in the picture is transpiration I guess
3)the pot is covered with plastic sheet to trap the water (vapour) which is being evaporated
A. What are two of the principles of stratigraphy? (4 points)
Answers
Lithological Character
Palaeontological Characters . But there is also an important principle known as “Principle Of Superposition” which is under Axiom. Generally this principle generates a lot of confussion . That’s why it is not regarded as important principle of stratigraphy.
Compare and contrast the cell structures / organelles found in plant and animal cells
• list 3 organelle / structure plant and animal cells have that are the same
• list 2 organelles / structures plant and animal cells have that are different
Answers
Answer:
Explanation:I need to get some answers too
How can an allele frequency
increase?
A. Allele frequencies always stay the
same.
B. Random mating occurs within the
population
quency
C. An allele becomes more common in a
population.
Answers
Answer:
C
Explanation:
Natural Selection can cause micro evolution, or a change in allele frequency over time
An allele becomes more common in a population. So, the correct option is (C).
What is an Allele Frequency?Allele frequency is also known as gene frequency. It is defined as the relative frequency of an allele at a particular locus in a population, expressed as a fraction or percentage. It is the fraction of all chromosomes in the population that carry that allele over the total population or sample size.
It forms the basis of many population and medical genetic studies. Many evolutionary forces change allele frequencies where allele frequencies can be used to trace past evolutionary events.
Allele Frequency is expressed as:
[tex]1 = p^2 + 2pq + q^2[/tex]
p and q each represent the allele frequency of different alleles.
Thus, an allele becomes more common in a population. So, the correct option is (C).
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The lipid bilayer membrane of a neuron is impermeable to charged molecules or ions. To enter or exit the neuron, ions must pass through special proteins called ion channels that span the membrane. Ion channels have different configurations: open, closed, and inactive. Some ion channels need to be activated in order to open and allow ions to pass into or out of the cell. Which ion channels are used in the production of electrical signals (Action Potential) in neurons
Answers
Answer:
The correct answer is: in neurons, the most used ion channels in the production of action potentials are the channels that allow fo passage of sodium and potassium.
Explanation:
Neurons must be able to transmit and receive signals in order for the nervous system to operate. Because each neuron has a charged cellular membrane (a voltage differential between the interior and the exterior), the charge of this membrane can vary in response to neurotransmitter molecules generated by other neurons as well as external stimuli. The membrane potential is the difference in total charge between the interior and outside of the cell. This membrane potential exists thanks to the state of ion channels that may or may not allow the passage of certain ions.
A substance called a neurotransmitter allows a neuron to accept input from other neurons. The neuron will transmit the signal to downstream neurons if the input is powerful enough. The opening and shutting of voltage-gated ion channels, which produce a transient reversal of the resting membrane potential to form an action potential, are used to transmit a signal within a neuron (in one direction only, from dendrite to axon terminal). The polarity of an action potential changes across the membrane as it travels down the axon. The signal then activates other neurons once it reaches the axon terminal.
The target neuron is depolarized to its threshold potential (-55 mV) by a stimulation from a sensory cell or another neuron, and Na+ channels in the axon hillock open, initiating an action potential. The neuron totally depolarizes to a membrane potential of around +40 mV after the sodium channels open. As Na+ channels open, the action potential moves along the neuron.
The cell's membrane voltage is "reset" to the resting potential after depolarization is complete. The Na+ channels shut, signaling the start of the refractory phase in the neuron. Voltage-gated K+ channels open at the same moment, allowing K+ to escape the cell. The membrane potential returns to a negative state as K+ ions exit the cell. The cell becomes hyperpolarized when K+ diffuses out of it, resulting in a membrane potential that is lower than the cell's usual resting potential. The sodium channels revert to their resting state at this moment, ready to open again if the membrane potential rises over the threshold potential again.
The smell of freshly cut grass occurs because the plant is signaling it is in distress, simultaneously warning other plants, trying to attract a creature to save it, and signaling to the cells around it to divide to close the wound. This type of signal would most likely be:
A. Local signaling
B. Synapse
C. Enzyme
D. Hormone
Answers
Answer:
A. local signaling
Explanation:
However, by comparing the of these organisms, many similarities between them are revealed. These similarities suggest that they're linked. This type of study is called developmental biology.
Answers
Complete Question:
1. Organisms don’t all reproduce the same way. However, by comparing the ____ of these organisms, many similarities between them are ____
2. of these organisms, many similarities between them are revealed. These similarities suggest that they’re ___ linked. This type of study is called developmental biology.
Group of answer choices.
A) Cells B) Embryos C) Mode of reproduction D) Evolutionarily. E). Revealed.
Answer:
embryo; revealed; evolutionarily.
Explanation:
Reproduction can be defined as a biological process which typically involves living organisms producing an offspring.
Basically, there are two (2) methods of reproduction and these are;
I. Asexual reproduction: it involves the cloning of a living organism to produce an offspring because there is only a single parent.
II. Sexual reproduction: it involves the combination of the genome (gamete) of a male and female living organism during fertilization.
It's a fact that all living organisms do not reproduce the same way.
However, by comparing the embryo of these organisms, many similarities between them are revealed. These similarities suggest that they’re evolutionarily linked.
Hence, we refer to this type of study as developmental biology
