The chemical equation demonstrates that mass is neither created nor destroyed and it obeys law of conservation of mass as mass is restored in the products .
What is law of conservation of mass?According to law of conservation of mass, it is evident that mass is neither created nor destroyed rather it is restored at the end of a chemical reaction .
Law of conservation of mass and energy are related as mass and energy are directly proportional which is indicated by the equation E=mc².Concept of conservation of mass is widely used in field of chemistry, fluid dynamics.
Law needs to be modified in accordance with laws of quantum mechanics under the principle of mass and energy equivalence.This law was proposed by Antoine Lavoisier in the year 1789.
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Explain the effects of base substitution, insertions, and deletions in the framework
Substitution
A substitution is a mutation that interchanges one base for another (i.e., a change in a single “chemical letter” such as switching an A to a F). Such a substitution can:
change a codon to one that encodes different amino acids and causes a small change in the protein produced. For example, sickle cell anemia is caused by substitutions in the beta-hemoglobin genes, which alters a single amino acid in the produced protein.
Insertion
Insertions are mutations in which extra base pairs are inserted into a new place in the DNA framework.
Deletion
Deletions are mutations in which a section of DNA is lost, or deleted from the existing DNA framework.
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You work in a museum that has a huge, beautiful, stained glass window. Each panel tints the light a different color. Recently a new exhibit showcasing plants from around the world has set up a table in front of the window. Plant 1 is in front of an Orange stained glass, Plant 2 is in front of a yellow stained glass, and Plant 3 is in front of a purple stained glass. Which plant should you tell the museum director to move so it doesn't become malnourished?
A. AlI 3 plants
B. Plant 2
C. Plant 3
D. Plant 1
Plant 3 should be removed from preventing it from being malnourished .
Plant 3 is present in front of purple stained glass should be removed from begin malnourished. Main purpose of stain glass is to let light into buildings while keeping the building completely enclosed.
These glasses are also known as cathedral glasses , these are made up of different shapes of glasses with different colors. Each color have different effect on plant purple colors comes low under absorption spectrum . Hence, plant in front of purple glass should be removed .
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A scientist just discovered animal A. Animal A is a warm-blooded animal that lives underwater, breathes through gills, and reproduces in water. Animal A is not a fish. Why?
A. Animal A lives in the water.
B. Animal A breathes through gills.
C.Animal A is warm blooded.
D.Animal A reproduces in the water.
Animal A is not a fish because it is warm blooded (option C).
What is warm-blooded animal?In zoology, being warm-blooded means ability to maintain a relatively constant and warm body temperature, regardless of the ambient temperature, also called endothermic.
Members of the pisces class are called fishes. Fishes are cold-blooded vertebrate animal that lives in water, moving with the help of fins and breathing with gills.
According to this question, a scientist just discovered an animal A. This animal was found to be warm-blooded, lives underwater, breathes through gills, and reproduces in water.
However, Animal A cannot be considered a fish because it is warm-blooded rather than being cold-blooded.
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The carrying capacity of an ecosystem is
the maximum number of individuals of a
certain species the ecosystem can
support.
Which of the following can change the
carrying capacity of an ecosystem?
A. no change in predator populations
B. habitat loss
C. no change in prey populations
Answer:
B. Habitat loss
Explanation:
We can eliminate "A" and "C" because no change to the predator/prey populations means the ecosystem is unchanged. This means the limiting factors are unchanged, so the carrying capacity will not change either. This leaves "B", which makes sense because less space means fewer organisms can reside in the space.
Vera has the A antigen on her erythrocytes. What blood type does she have?
Vera has the A antigen on her erythrocytes. A is the type of blood that Vera have.
People can only have one of four blood types, A, B, AB, or O, according to the ABO test. If your blood's red cells contain: the antigen A.
Depending on the presence or absence of antibodies and hereditary antigenic compounds on the surface of red blood cells, blood is classified according to its type (also known as blood group) (RBCs).
Depending on the blood grouping system, these antigens could be proteins, carbohydrates, glycoproteins, or glycolipids. Other cell types from different tissues' surfaces also include some of these antigens.
A blood group system is made up of several of these red blood cell surface antigens, which can all be derived from the same allele (or alternative gene). The blood types that an individual has come from both of their parents and are inherited. The International Society of Transfusion has approved 43 different human blood group systems as of September 2022.
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Flooding, fires, volcanoes, and human changes can all damage ecosystems. The process of regrowth in an ecosystem tends to restore a state of equilibrium. Which is an example of how a damaged ecosystem will begin the restoration process?
An example of how a damaged ecosystem will begin the restoration process is:
some species of pine trees only release their seeds following the extreme heat of a forest fire; option D
What is the process of regrowth in an ecosystem?The process of regrowth or restoration in an ecosystem is the process by which the ecosystem recovers when a drastic change occurs in the ecosystem that alters the equilibrium in the ecosystem.
Such changes could be caused by factors such as flooding, fires, volcanoes, and human activities.
The process of regrowth starts with primary producers first colonizing the disturbed ecosystem before other organisms then start habiting the ecosystem.
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Complete question:
Flooding, fires, volcanoes, and human changes can all damage ecosystems. The process of regrowth in an ecosystem tends to restore a state of equilibrium. Which is an example of how a damaged ecosystem will begin the restoration process?
A Seasonal turnover in a lake replenishes oxygen to deep water and cleanses waste products from the lake.
B Rain forest species can spread their seeds over a wide area to begin growing in new regions.
C Mining companies plant trees and add wildlife to restore an area after a mining operation.
D Some species of pine trees only release their seeds following the extreme heat of a forest fire.
What is the name of the embedded protein that provides a channel for
the hydrogen ions to pass through the membrane?
Answer:ATP Synthase
Explanation:
Snake venom is modified saliva that is secreted from glands on the sides of the snake's head.
Some types of venom functions by changing the shape of the enzyme cholinesterase in the
snake's prey. Cholinesterase is an enzyme that functions as a neurotransmitter that allows
the brain to control muscle movement.
What is the result of the shape change in the enzyme cholinesterase?
F The enzyme will no longer catalyze the reaction, which causes the prey to lose muscle
control.
G The substrate will change shape to match the enzyme so that the prey muscles continue
working.
H The enzyme will be capable of binding to more substrates that allow the prey to escape
the snake.
J
A new product will be made that causes the prey's muscles to not function as well as
they should.
The cholinesterase enzyme's altered shape prevents it from catalyzing the reaction, which makes the prey lose control of their muscles.
Where do snakes' venom glands reside?The venom gland, a salivary gland modified, is found slightly below and behind the eye. The size of the venom gland depends on the size of the snake, and this figure depicts the Timber Rattlesnake's venom gland's approximate size in relation to its skull (Crotalus horridus).
What are the names of venom glands?Before being transported by a duct to the base of channeled or tubular fangs, the venom is first stored in huge glands called alveoli.
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7.Name the stages of photosynthesis and explain them in brief.
16. Write About It Suppose you are a doctor with
patients who are mountain climbers. Write a
letter to these patients that explains how gas
exchange is affected at the top of a mountain,
where air pressure is lower and there is less
oxygen than at lower elevations.
Dear mountaineers, There are different factors that affect the gas exchange at the top of a mountain like air pollution, temperature, particular matter the ozone layers and among others.
What is Gas Exchange?
During the process of gas exchange, the oxygen passes from the lungs to the blood stream and at the same time a waste gas called carbon dioxide passes from the blood stream to the lungs.The carbon dioxide is then released from the lungs through breathing and the good gas called oxygen is inhaled.what is the air pressure at a height?
As we go up in the heights, the air pressure starts to lower down and it becomes difficult to breathe properly. At the top of a mountain, the air pressure forms air paper-thin, that results in less oxygen in the air to inhale.To learn more about Gas Exchange and Air Pressure, check this link:
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Which
hypothesis is
correctly
written?
A. What will happen if a
plant is put under green
light rather than
another color?
B. If the plant is put
under green light, then
it will grow the largest.
C. Plants put under
green light tend to be
larger, but no one
knows for sure.
Answer:
I think C
Explanation:
Plants put under green light tends to be larger, but no one knows for sure
I think it's correct because hypothesis's are guesses so if no one knows for sure, it could be correct
When two mechanical waves have a displacement in the same direction, and they overlap,
what will the resulting wave look like?
When two mechanical waves have a displacement in the same direction, and they overlap, then the resulting wave would have a higher amplitude or displacement compared to the original waves. This is referred to as constructive interference.
Any position along the medium where the two interfering waves have a displacement in the same direction will experience constructive interference. Because both waves in this instance have an upward displacement, the upward displacement of the medium is higher than the displacement of the two interfering pulses. Any site where the two interfering waves are moved upward will exhibit constructive interference. But it can also be seen when the displacement of both interfering waves is downward. This is seen for two downwardly displaced pulses in the picture below.
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What is the narrative perspective of this passage? "It was unthinkable, it was detestable (so he signaled to her across the table) that Augustus should be beginning his soup over again. He loathed people eating when he had finished. She saw his anger fly like a pack of hounds into his eyes, his brow, and she knew that in a moment something violent would explode, and then - but thank goodness!... He sat there scowling. He had said nothing, he would have her observe. Let her give him the credit for that! But why after all should poor Augustus not ask for another plate of soup? first-person second-person third-person omniscient third-person limited
Answer:
point of view
Explanation:
Which of the following describes an effect of an environmental issue experienced at the local level?
Warming temperatures and rising sea levels are affecting many island populations.
Highway noise and pollution have increased dramatically ever since this section of interstate was built.
Everyone left work for the day after mold was discovered growing on a ceiling tile.
An entire species of deer has become extinct because of overhunting.
The option that describes an effect of an environmental issue experienced at the local level is option B: Highway noise and pollution have increased dramatically ever since this section of interstate was built.
What environmental issues do the locals have to deal with?Some of the most pressing environmental problems India is currently dealing with include air pollution, inadequate waste management, increasing water scarcity, declining groundwater tables, water pollution, forest preservation and quality, biodiversity loss, and land and soil degradation.
Note that the negative impacts of human activity on the environment are known as environmental concerns. These include environmental issues including pollution, population growth, waste management, and the greenhouse effect, among others.
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How similar is human dna to other humans?
Human DNA is 99% identical to other humans.
Differences in the remaining 0.1 percent hold important clues about the causes of diseases.
Is the DNA of all humans the same?
The human genome is mostly the same in all people. But there are variations across the genome. This genetic variation accounts for about 0.001 percent of each person's DNA and contributes to differences in appearance and health.
Do all humans have 99.9 of the same DNA?
All human beings are 99.9 percent identical in their genetic makeup.
Thus, 99% of human DNA is identical to other humans.
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I don’t know how to do this
Answer: it is the first one
Explanation:
he was inspired by his father to be a doctor. And deep down his dream is to be a doctor
Describe briefly the modifications and mechanisms associated with the following feeding habits. (b) (i) Filter feeding in mosquito (ii) Parasitic feeding in tapeworm.
The modifications and mechanisms associated with the following feeding habits are the mosquito larva feeds by using its strainers to catch particles and plankton.
Filter feeding in mosquito larva: Using its strainers, the mosquito larva eats by capturing plankton and other particles. Mandible, maxillae, and brushes are present on the head. The pair of brushes at the sides of the mouth can sweep through water and entangle small food particles that are combed into the mouth by the maxillae and mandibles because the ventral surface of the head is angled upward.
Parasitic feeding in tapeworm: The tape worm's head (scolex), which has hooks, and a rostellum, is used for parasitic feeding. The organism is able to cling to the walls of its host's gut thanks to its hooks. The host's digested meal is absorbed throughout the entire body.
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stem cells have the ability to divide through ____ and produce unspecified cells. they can be developed into a required tissue because of their ability of _____
Stem cells have the ability to divide through mitosis and produce unspecified cells. They can be developed into a required tissue because they have the ability of differentiation.
Mitosis is the process of cell division where the number of chromosomes remain the same after cell division in the daughter cells. The process is accomplished in four phases: prophase, metaphase, anaphase, and telophase. It occurs in all the somatic cells of the body.
Differentiation is the ability of stem cells to stop dividing and showing growth and development in order to gain their fate. The fate of a cell is to mature and achieve a specific function after which it cannot divide further.
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Which structure is the site of the synthesis of proteins destined for export from the cell?
a. Lysosomes
b. Smooth ER
c. Rough ER
d. Free cytoplasmic ribosomes
e. Golgi vesicles
Answer:Golgi Vesicles
Which event occurs in photosystem I?
1. Water molecules are broken apart.
2. Light energy excites electrons.
3. Oxygen is released as waste.
4. Electrons are transferred to ferredoxin.
Answer: Electrons are transferred to ferredoxin.
Which activity describes the use of technology in science?
listening to a scientist talk about cells
viewing stars through a telescope
observing a plant through the bedroom window
creating a blank data table in a notebook
Answer:
creating a blank data table in a notebook
Answer:
The Answer is B. viewing stars through a telescope
Explanation:
All organisms use respiration, but?
a. only plants have mitochondria
b. only animals have mitochondria
c. only prokaryotes have mitochondria
d. only eukaryote have mitochondria
Answer:
I believe that it is D
Explanation:
Prokaryotes don't have mitochondria.
the inferior mesenteric artery supplies blood to the?
The inferior mesenteric artery supplies blood to the hindgut
The structures of the developing hindgut are supplied by the branches of the inferior mesenteric artery. These include the rectum, splenic flexure, descending colon, sigmoid colon, and the distal third of the transverse colon. The left colic artery, sigmoid artery, and superior rectal artery are the IMA's three main branches.
At the level of the third lumbar vertebra, the abdominal aorta gives rise to the inferior mesenteric artery. It has four major branches, the left colic, sigmoid, and superior rectal arteries, which supply the hindgut. Additionally, it aids in the development of Drummond's marginal artery. The digestive system reaches the rectum through the mouth. It is made up of several hollow organs that help us break down, digest, and absorb nutrients from the food we ingest.
Its numerous organs are designed to absorb specific vitamins and nutrients; for instance, the terminal ileum is where vital micronutrients like vitamin B12 are absorbed.
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4. Red-green colorblindness is inherited as a sex-linked recessive. If a colorblind
woman marries a man with normal vision, what would be the expected
phenotypes of their children?
The children would be 50% colorblind.
What is colorblindness?
Colorblindness refers to the inability to see colors in a normal way. Colors like blue, green, red, etc. in some very rare cases, a person cannot see any color at all. Colorblindness is also referred as Daltonism, named after its founder- john Dalton.
Types:
Monochromacy: 2-3 cone pigments are absent or damaged (red, green, blue). This leads to complete colorblindness.
Dichromacy: only one cone pigment is absent/ damaged (red, green, blue). This leads to partial colorblindness.
Color blindness is mostly a sex-linked recessive disorder. If a colorblind woman married a man with normal vision, the children would be fifty percent colorblind.
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B
Which type of bacteria
stain purple during Gram
staining?
Gram-negative bacteria
Gram-positive bacteria this
Answer:
gram positive
Explanation:
the bacteria is what makes it turn purple
Answer:
b) Gram-positive bacteria
Explanation:
Gram-positive bacteria stain purple during Gram staining and Gram-negative bacteria turns into red (or) pink. Hence, option (b) is correct answer.
Two lizard species both forage in fig trees in the Caribbean. To study potential competition between the species, you observe a sample of both species, observing the fraction of time they spend in the upper half and bottom have of the trees, as well as the fraction of their diet comprised of insects vs. fruit. Below are your data.
Answer choices:
A. Character displacement is occurring between these two species
B. Resource partitioning is occurring between these two species
C. These species appear to have a mutualistic relationship
D. These species appear to have a parasitic relationship
E. Competitive exclusion is likely to occur where these species are found together
Resource partitioning occurs when two species that share the same niche, make use of resources differently in order to avoid competition. Option B) Resource partitioning is occurring between these two species.
What are competitive exclusion, resource partitioning, and character displacement?Intra- or interspecific competition is an ecological and evolutive process very common in nature.
Competition between different species might be due to the same resource use (food, territory, shelter, etcetera). When a resource is useful for two or more species, and is limited, they compete to gain it.
The principle of competitive exclusion states that different species with the same requirements sharing the niche can not coexist indefinitely based on the same limited resource.
When two competing species coexist, this is because of resource partitioning or niche differentiation.
Differentiation of effective niche is closely related to character displacement.
Character displacement is the result of interspecific competition, in which two or more species that live in the same habitat manage to avoid competition by developing different traits.
Morphological divergence, or any adaptative trait development, fixated genetically, is the product of niche segregation.
Species tend to differentiate morphologically in the presence of strong competitors. Traits divergence favors coexistence in the same place.
In the exposed example, we can see that,
both species (A and B) spend most of their time in the upper part of the tree. species A mainly preys on insects, while species B mainly feeds on fruits.These populations can share the same niche because of resource partitioning. Most of them feed in the upper part, but to avoid competition, one population feeds on insects, and the other one feeds on fruits.
This resource partitioning might lead to the occurrence of character displacement related to the feeding and digestive apparatus and predation strategies. However, the table does not reflect this information.
The correct option is B. Resource partitioning is occurring between these two species.
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How many tall, yellow plants would result from the cross of a heterozygous tall, green pea
plant and a homozygous, short, yellow plant?
Considering the genotype of heterozygous tall, green pea plant as TtYy and genotype of homozygous, short, yellow plant as ttyy, the number of tall, yellow plants obtained as offspring will be 4. The cross showing the obtained progenies is given in the image.
Homozygous condition of genotype is when both the alleles for any trait are similar. The homozygous alleles can either be dominant or recessive.
Genotype is the genetic composition of an individual. It can be for the the entire genome or for a particular trait. The genotype can be heterozygous or homozygous. For dihybrid heterozygous genotypes, 4 types of gametes will be obtained (TY, Ty, tY, ty according to the given question) and for dihybrid homozygous genotypes only type of gamete (ty) will be obtained.
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this cross, the tall, green plant is heterozygous for the trait of tallness (Tt) and the short, yellow plant is homozygous for the trait of shortness (tt). When the two plants are crossed, their offspring will inherit one gene for tallness and one gene for shortness from each parent.
Since the tall, green plant is heterozygous, it has one dominant gene for tallness (T) and one recessive gene for shortness (t). The short, yellow plant is homozygous, so it has two recessive genes for shortness (tt).
Since tallness is dominant and shortness is recessive, all of the offspring will inherit the dominant gene for tallness and will be tall. However, since the short, yellow plant is homozygous for the recessive trait of yellow, all of the offspring will also inherit the recessive gene for yellow from the short, yellow plant and will be yellow.
Therefore, the number of tall, yellow plants that will result from this cross is:
all offspring
This means that all of the plants in this cross will be tall and yellow.
Drag each tile to the correct box.
Beginning with the flow phase, arrange the biochemical processes in the order in which they occur during the menstrual cycle.
FSH and LH stimulate the follicles to develop and the oocyte to produce estrogen.
A breakdown of corpus luteum causes progesterone levels to drop.
A spike in LH causes the follicle to rupture.
The endometrial lining breaks down and low levels of estrogen stimulate the pituitary to release FSH and LH.
Rising estrogen levels suppress FSH production and development of other follicles.
High progesterone levels maintain the endometrial lining of the uterus.
During the menstrual cycle, it begins with endometrial lining breakdown to break down of the corpus luteum with a change in hormonal level.
What is the menstrual cycle?The endometrial lining is broken and due to low levels of estrogen begins to stimulate the pituitary to release FSH and LH, this hormone stimulates the follicles for developing oocytes to produce estrogen.
When estrogen level rise it suppresses FSH production and develop other follicles, gradual rise in LH causes the follicle to rupture then high progesterone levels maintain the endometrial lining.
Therefore at last a breakdown of the corpus luteum this progesterone levels to drop and complete the cycle.
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Which of the following is not an example of interactions between biotic and abiotic factors in an ecosystem?
Answer:
What are the options?
Explanation:
In the human body, many cell types do not continue dividing. Give two examples of cells that do not divide and two examples of cells that grow and divide rapidly and regularly.
Neurons and mature red blood cells do not divide. Skin cells and stomach cells grow and divide rapidly and regularly.
Neurons are cells of the nervous system that do not have centrioles because the centriole is an important organelle for cell division.
Red blood cells do not have nuclei or other organelles required for DNA and RNA synthesis. So they can't divide.
Skin cells lose dead cells every day. So they divide rapidly and regularly to replace the lost cells to prevent infection.
The cells lining the stomach undergo wear and tear during food absorption, digestion, and waste elimination. So these cells also divide rapidly and regularly to replace the lost cells.
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