To speed up a chemical reaction it is necessary to add more
Answers
Answer:
The rate of reaction is sped up with: higher reactant concentration, higher temperature, higher pressure, greater surface area, catalysts and when the reactants are in the same phase.
Explanation:
Related Questions
Nicotine replacement and self-management techniques are two approaches to smoking__________________.
What is the name of the method in which a smoker tries to avoid tempting situations and manages feelings that lead to nicotine use?
True or False Most people pick up smoking habits in adulthood.
Making sure your friends know you are tobacco-free and sticking to that decision in the face of pressures and influences requires ________________skills.
Critical Thinking Identify 5 health benefits of smoking cessation (stop smoking) that occur throughout the years after you quit, as well as those you see within a few days.
Can someone pls help me.
Answers
Answer:
It requires trolling your friends skills
What is the most commonly used time unit, all of which have corresponding time-stratigraphic units? a. formation b. biozone period c. series d. nonconformity
Answers
The most commonly used time unit, which also has corresponding time-stratigraphic units, is the geologic period. Therefore, the correct answer is option b. biozone period.
Geologic periods are major divisions of geologic time that represent long intervals of Earth's history. They are based on significant changes in Earth's fossil record and are used to categorize and understand the sequence of events and the evolution of life on Earth. Each geologic period is further subdivided into epochs, stages, and zones, which provide more detailed time divisions.
Biozones are specific intervals of time characterized by distinctive fossil assemblages or specific species. These biozones are used to define and correlate strata in different regions and provide a means of studying the distribution and evolution of organisms throughout geologic history.
While formations (option a) represent distinct rock units and nonconformities (option d) are geological discontinuities, the most commonly used and recognized time unit with corresponding time-stratigraphic units is the geologic period, which includes biozones and allows for the study of Earth's history and life's evolution over time.
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Which is the SI unit for length
Answers
Answer:
The Meter.
Explanation:
Write a short note on broyophytes?
Answers
Answer:
Bryophytes are an informal group consisting of three divisions of non-vascular land plants: the liverworts, hornworts and mosses. They are characteristically limited in size and prefer moist habitats although they can survive in drier environments. The bryophytes consists of about 20, 000 plant species.
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\(Write~ a ~short~ note ~on~ bryophytes?\)
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Bryophytes are a loose classification of three non-vascular land plant embryophytes: liverworts, hornworts, and mosses. They are typically small and prefer damp surroundings, however, they may thrive in drier ones. There are over 20,000 plant species in the bryophytes.\(\underline{-----------}\)
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which surface of the maxillary bones fuse together?
Answers
The upper jaw is made up of the medial surfaces of the right and left maxillary bones.
The upper fixed bone of the jaw in vertebrates, the maxilla, is created by the fusion of two maxillary bones. The hard palate is part of the upper jaw in humans and is located in the front of the mouth. The intermaxillary suture connects the two maxillary bones to create the anterior nasal spine. Similar to the mandible (lower jaw), which is likewise formed by the fusion of two mandibular bones at the mandibular symphysis, this joint is called a symphysis. The portion of the jaw that may move is the mandible.
The maxillary arch, or alveolar process of the maxillae, is where the upper teeth are located. The zygomatic bones are joined laterally to each maxilla.
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blood samples are taken from the heel of newborn babies to test for a mutation in the pku gene. why is this so important?
Answers
Newborns' heels are sampled for blood to check for PKU gene mutations. This is crucial because it determines whether the child has PKU, which can cause various health issues if they consume protein-containing foods.
Phenylketonuria is referred to as PKU. A rare disorder prevents the body from metabolizing a portion of the protein phenylalanine (Phe). All protein-rich foods, including milk, meats, and nuts, contain phe. Aspartame, an artificial sweetener, also contains it.
If you have PKU and consume Phe-containing foods, Phe will accumulate in your blood. If the level rises too high, your nervous system and brain may suffer long-term damage. Numerous health issues, such as seizures, psychiatric issues, and learning and developmental disabilities, can be brought on by the damage. A PKU screening test uses the amount of Phe in a blood sample to diagnose PKU.
In the USA, PKU testing is required for newborns. A newborn screening battery of tests typically includes a PKU test. Some older babies and kids might require testing if they were born in another country. If a person exhibits any of the following PKU symptoms, they may also be tested:
Delayed development
Intellectual difficulties
A musty odor in the breath, skin, and urine (pee)
Unusually small head (microcephaly)
A genetic condition is PKU. Thus, gene changes are the root cause (variants or mutations). Genes are pieces of DNA you acquire from your parents and are found in your cells. Genes contain instructions that govern how your body functions and how you look. The PKU gene contributes to producing a substance that disintegrates Phe in food. Based on whether the altered gene still functions in some capacity or has completely stopped functioning, PKU can range from mild to severe.
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Select the correct answer.
Which is the correct definition of a large animal?
O A.
an animal that lives outdoors
OB.
an animal used for food, farming, or agriculture
OC. an animal of a large size that needs daily care
OD. an animal that needs large farms
Answers
Answer:
OC is the correct answer
during what phase of the cell cycle does the cell prepares for Mitosis?
Answers
Answer:
interpahse
Explanation:
A cell spends most of its time in what is called interphase, and during this time it grows, replicates its chromosomes, and prepares for cell division. The cell then leaves interphase, undergoes mitosis, and completes its division
Answer:
during interphase......
Which best explains the difference between a ball-and-stick model of a chemical compound and a space-filling model?
Ball-and-stick models can show compounds in three dimensions, but space-filling models cannot.
Space-filing models can show compounds in three dimensions, but ball-and-stick models cannot.
TIME REMAINING
01:24:59
Ball-and-stick models show the bonds between atoms, but not the relative sizes of atoms. Space-filling models show
the relative sizes of atoms, but not the bonds between atoms.
hp
O Space-filling models show the bonds between atoms, but not the relative sizes of atoms. Ball-and-stick models show
the relative sizes of atoms, but not the bonds between atoms.
Answers
Answer: Ball-and-stick models show the bonds between atoms, but not the relative sizes of atoms.
Explanation:
This is because both the ball and stick are combined this shows the combination between atoms.
match each term about wind erosion and depostion with its description
Answers
loess - a deposit of fine, mineral-rich soil that is good for agriculture
deflation - the process by which wind moves particles that are loose
sand dune - sand deposited against an obstruction
abrasion - the process by which wind wears down solid objects
Answer: I passed with 100% I attached a picture for proof
Explanation:
Which organ is shaped like a small balloon and is located in the space between your hip bones
Answers
Answer:
bladder
Explanation:
Answer:
Bladder
Explanation:
The Bladder is shaped like a small balloon and is located in the space between your hip bones
Who is at the greatest risk of developing water toxicity?
A. Someone who is underweight
B. Someone who has type Il diabetes
C. Someone who is exercising vigorously
D. Someone who doesn't do much physical activity daily
Answers
Someone who is exercising vigorously is at the greatest risk of developing water toxicity. Therefore, option C is correct.
Water toxicity is also known as hyponatremia or water poisoning. It occurs when the level of sodium in the blood becomes abnormally low. During vigorous exercise, individuals tend to sweat more. It leads to increased water loss and potentially higher concentrations of certain substances in the body.
If water is consumed excessively without replenishing the necessary electrolytes, it can dilute the electrolyte balance in the blood, causing a condition known as water toxicity or water intoxication.
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Lipids are considered the building blocks of plasma membranes. What could be the reason a
cell is unable to synthesize lipids?
Answers
Answer:
phospholipids
Explanation:
The fundamental building blocks of all cell membranes are phospholipids which are amphipathic molecules, consisting of two hydrophobic fatty acid chains linked to a phosphate-containing hydrophilic head group.
Observing the picture predict how the water will move and what will happen to the cell.
Answers
Many different relationships exist between organisms in an ecosystem. These relationships include competition for food, shelter, and
other resources as well as predation in which one organism kills and consumes another for food. There are also symbiotic
relationships. Symbiosis is a close relationship between two species in which at least one species benefits. For the other species, the
relationship may be positive, negative, or neutral. There are three basic types of symbiosis: mutualism, commensalism, and parasitism.'
Evaluate each of the relationships depicted in the choices. Select ALL the relationships illustrating commensalism.
es 0)
A)
Hermit crabs use the shells of dead snails for homes.
B)
Egrets perch on the back of cows and eat the insects that have been
disturbed as the cattle forage for food.
C)
Fleas get food and a warm home by living on hosts such as dogs or cats
and biting them to get nutrients from their blood.
D
The Egyptian Plover or "Crocodile Bird" will fly into the crocodile's open
mouth and feed on the decomposing meat stuck between their teeth
E)
The pilot fish helps to rid the shark of parasites and clean away fragments
of food caught between their teeth, it benefits from protection against
other predators.
Answers
Answer: A . Hermit crabs use the shells of dead snails for homes & B. Egrets perch on the back of cows and eat the insects that have been distributed as the cattle forage for food.
Explanation: I just did it on usatestprep
The connections that demonstrate commensalism are as follows:
A) Hermit crabs use the shells of dead snails for homes.
B) Egrets perch on the back of cows and eat the insects that have been disturbed as the cattle forage for food.
So, the correct options are A and B.
What is Commensalism?One organism benefits from commensalism, a type of symbiotic relationship between two species in which the other is neither harmed nor helped. To put it another way, one organism gains, while the other is unaffected. When a bird builds its nest in a tree, it is engaging in commensalism because it not only provides shelter to the bird but does not benefit the tree in any way.
Some examples that illustrate the following are some relationships that show commensalism:
A) Hermit crabs live in the shells of dead snails.
B) As the cows graze for food, the heron sits on their backs and eats the pesky insects.
So, the correct options are A and B.
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During cellular respiration, what is the direct source
of the energy used in the cells of consumers in the
ecosystem represented below?
A) the sun
B) enzymes
C) the atoms making up inorganic molecules
D) the chemical bonds in organic molecules
Answers
Answer:
D the chemical bonds in organic moleculesExplanation:
Respiration is a process which provides energy by the organic molecules.
So the chemical bonds in organic molecules provides energy.
The chemical reaction involving cellular respiration is given below.
Glucose Oxygen Carbon dioxide water
C6H12O6 + 6O2--------------> 6CO2 + 6H2O + energy
Kindly mark it branliest if the answer is little bit satisfying.
During cellular respiration, what is the direct source of the energy used in the cells of consumers in the ecosystem is represented by the chemical bonds in organic molecules, i.e., option D.
What are chemical bonds?
A chemical bond is an attraction between atoms, ions, or molecules that allows chemical compounds to form.
During cellular respiration, what is the direct source of the energy used in the cells of consumers in the ecosystem is represented by the chemical bonds in organic molecules.
Thus, the correct option is D.
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Need help. Will give brainliest. Answer all these questions.
Answers
Answer:
1. The daughter cells are genetically identical because they each contain the same diploid chromosome complement as the original parent cell. It can be seen in the stages shown above that mitosis maintains the chromosome number or complement of a cell.
2. Much of the growth in an adult is attributed to the growth plate in the bones, which is line of cells at each end of the bone that divides rapidly during puberty. As the bones elongate, the muscles also elongate as they are stimulated to grow by stretching and hormonal changes. When puberty is completed, the growth plate calcifies into solid bone and can no longer grow. Muscles can continue to enlarge with athletic activities and can sometimes split with excessive force, but muscle cells typically do not continue to divide. Cells such as your skin, hair, and interior mucus surface cells continue to divide because they are in direct contact with things from the outside world. Bone marrow also continually divides to produce red and white blood cells. Many other cells in your body do not continue cell division.
3. The number of Chromosomes stay the same when the cell divides because before a cell divides it produces new copies of the Chromosomes in the nucleus so when division takes place two genetically identical 'daughter cells', containing the same genes, are formed.
4. – in cells capable of dividing, the period between cell divisions is called interphase – cells spend most of their time in interphase because this is the phase where they perform their functions (obtaining energy, synthesizing products, repair damage, fight disease, duplicate their genetic material and get ready for division)
5. Asexual reproduction is a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes. The offspring that arise by asexual reproduction from either unicellular or multicellular organisms inherit the full set of genes of their single parent. Asexual reproduction is the primary form of reproduction for single-celled organisms such as archaea and bacteria. Many eukaryotic organisms including plants, animals, and fungi can also reproduce asexually. In vertebrates, the most common form of asexual reproduction is parthenogenesis which is typically used as an alternative to sexual reproduction in times when reproductive opportunities are limited. While all prokaryotes reproduce without the formation and fusion of gametes, mechanisms for lateral gene transfer such as conjugation, transformation and transduction can be likened to sexual reproduction in the sense of genetic recombination in meiosis.
6. Since each of the parent cell’s chromosomes were replicated during interphase, there are two copies of each chromosome in the cell during prophase. Once the chromatin has condensed into individual chromosomes, the genetically-identical chromosomes come together to form an “X” shape, called sister chromatids .
Explanation:
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where does hemopoiesis occur? yellow bone marrow epiphyseal line red bone marrow nutrient foramina endosteum
Answers
Answer:
Red bone marrow
Explanation:
Hematopoiesis that occurs in your bone marrow is called medullary hematopoiesis. Blood cells get made in your bone marrow and released into your bloodstream. Less often, hematopoiesis takes place in other parts of your body, like your liver and spleen. Hematopoiesis that occurs outside of your bone marrow is called extramedullary hematopoiesis.
In adults, hematopoiesis of red blood cells and platelets occurs primarily in the bone marrow. In infants and children, it may also continue in the spleen and liver.
what happens during primary wastewater treatment?
Answers
During primary wastewater treatment, the main goal is to remove a significant portion of the suspended solids and organic materials present in the wastewater. The process typically involves the following steps:
1. Screening: Wastewater enters the treatment plant and goes through a screening process to remove large objects, such as rags, trash, and debris, which could clog or damage the treatment equipment.
2. Grit removal: After the screening, the wastewater flows through a grit chamber where sand, gravel, and other heavy inorganic particles are removed by settling due to gravity. This helps protect the subsequent treatment processes and equipment from abrasion.
3. Sedimentation: The wastewater then enters a primary sedimentation tank or clarifier, where suspended solids and organic materials settle to the bottom as primary sludge. The remaining wastewater, called primary effluent, contains a reduced amount of solids and organic matter.
4. Skimming: During sedimentation, lighter materials such as fats, oils, and grease (FOG) float to the surface and are removed through a skimming process. This helps prevent these materials from interfering with subsequent treatment stages.
After primary wastewater treatment, the primary effluent typically undergoes secondary treatment to further remove dissolved and suspended organic matter, as well as additional treatment steps depending on local regulations and requirements.
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what is the adaptive significance of having sperm and eggs produced at different times?
Answers
The adaptive significance of having sperm and eggs produced at different times is to promote outcrossing and increase genetic diversity within a population.
By producing sperm and eggs at different times, individuals are more likely to encounter potential mates that are genetically different from themselves. This promotes outcrossing, which is the mating between individuals that are not closely related. Outcrossing increases genetic diversity within a population and provides several benefits.
First, genetic diversity enhances the adaptability of a population to changing environmental conditions. It increases the chances of individuals possessing advantageous traits that allow them to survive and reproduce in different environments or under varying selective pressures.
Second, genetic diversity reduces the risk of inbreeding and the expression of deleterious recessive traits. When closely related individuals mate, there is a higher chance of harmful genetic mutations and abnormalities being expressed in their offspring. By producing sperm and eggs at different times, individuals are more likely to mate with individuals who are less closely related, reducing the risk of inbreeding and increasing the overall fitness of the population.
In summary, the production of sperm and eggs at different times promotes outcrossing, which increases genetic diversity, enhances adaptability, and reduces the risk of inbreeding within a population. These factors contribute to the long-term survival and evolutionary success of a species.
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Apply what you have learned about forces to explain what is happening as you go sailboarding. Describe the forces and how they affect your motion. DO your velocity and acceleration chabge during the ride?
Answers
The forces and how they affect your motion include the following:
WeightBuoyant force - the contact force with the water that pushes the boat up Forward force of the windBackward drag of the water.What is Sailboarding?This is an outdoor activity in which someone stands up on a board connected to a mast and sail.
The velocity and acceleration changes during the ride because the forces acting on the body aren't constant.
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based on your hypothesis, you predict that the chemical isolated from the fungus will successfully kill cancer cells. to test this prediction, you design the following experiment. you isolate cancerous cells from the colon of a patient from north carolina and culture (grow) the cells in your lab. you divide the cultured cells into four separate culture dishes. you treat two of the dishes with the fungus chemical and the other two with a control solution that does not contain the chemical. over the next ten days, you collect data on the percentage of cells that remain alive in each culture dish.
Answers
The values of the data gives the range of the percentage of cells with chemical treatment remaining as [100, 10], while those without treatment have a range of [100, 90], which gives;
Statement(s) supported by the data are;
1. Cancer cells treated with chemical have a lower survival rate than cells that are not treated
3. This chemical will be useful for treating colon cancer but not necessarily other types of cancer
5. After 5 days of chemical treatment, less than 50% of the cancer cells are alive
6. After 10 days without chemical treatment, more than 90% of the cancer cells are alive
Statement(s) not supported by the data
2. Cancer cells treated with chemical have a higher survival rate than cells that are not treated
4. This chemical will be used with all types of cancer
How can the correct information be obtained from the graph?The possible question options of obtained from a similar question are as follows;
Cancer cells treated with chemical have a lower survival rate than cells that are not treatedCancer cells treated with chemical have a higher survival rate than cells that are not treatedThis chemical will be useful for treating colon cancer but not necessarily other types of cancerThis chemical will be used with all types of cancerAfter 5 days of chemical treatment, less than 50% of the cancer cells are aliveAfter 10 days without chemical treatment, more than 90% of the cancer cells are alivePlease find attached the graph displaying the data collected.
Required; To determine the statements that are supported by the graph
Solution
The data on the graph shows that as the number of days increases, the survival rate for cancer cells reduces from 100% to about 10%, such that less than 50% are alive in 5 days, while the survival rate for cells not treated reduces by about 10% to 90% in the same period.
From the graph, we therefore have;
Statement(s) supported by the data
The statements supported by the data are; 1, 3, 5 and 6Statement(s) not supported by the data
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Which statement best describes the cell membrane?
1. It is found only in animal cells
2. It is a nonliving structure
3. It controls reproduction in a cell
4. It controls the passage of materials into the cell
Answers
Answer:
The correct answer is 4
Explanation:
The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.
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How does the double helix structure of dna explain how does he molecules can be copied or replicated
Answers
Answer:
The double helix structure of DNA allows for the molecules to be copied or replicated through the process of semi-conservative replication.
Explanation:
The double helix structure of DNA consists of two complementary strands of nucleotides, held together by hydrogen bonds between the base pairs. Adenine (A) always pairs with thymine (T) and guanine (G) always pairs with cytosine (C).
The semi-conservative replication, which is the process of DNA replication, takes place by unwinding the double helix and separating the two strands. Each strand acts as a template for the synthesis of a new complementary strand. As a result, two identical copies of the original DNA molecule are formed, each consisting of one original strand and one new strand. This is possible because of the complementary base pairing, where A will only pair with T and G will only pair with C, allowing the strands to be copied with high accuracy. The semi-conservative replication ensures that the genetic information is accurately passed on to the daughter cells.
Use the following information to answer the question.
Paulinella chromatophora is one of the few cercozoans that is autotrophic, carrying out aerobic photosynthesis with its two elongated "chromatophores." The chromatophores are contained within vesicles of the host cell, and each is derived from a cyanobacterium, though not the same type of cyanobacterium that gave rise to the chloroplasts of algae and plants.
A crucial photosynthetic gene of the cyanobacterium that gave rise to the chromatophore is called psaE. This gene is present in the nuclear genome of the cercozoan, but is not in the genome of the chromatophore. This is evidence of _________.
(A) reciprocal mutations in the chromatophore and nuclear genomes
(B) horizontal gene transfer from bacterium to eukaryotes
(C) genetic recombination involving a protist and an archaean
(D) transduction by a phage that infects both prokaryotes and eukaryotes
Answers
This is evidence of reciprocal mutations in the chromatophore and nuclear genomes.
What is chromatophore ?A chromatophore is a pigment-containing cell on an animal's surface with contractile fibers that can extend the cell and spread the pigment across the surface.
The integument and internal organs include chromatophores, or pigment-containing cells. They serve several roles in adjusting the body's color to its surroundings (e.g., protection, mating behavior, antagonistic displays).
Many cephalopods, including squids, cuttlefish, and octopuses, have organs called chromophores that contain pigment sacs that become more apparent when tiny radial muscles pull the sac open, causing the pigment to extend beneath the skin.
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Match the hormone with its effect on the ovary, uterus, or oogenesis. Causes ovulation of the mature follicle Causes development of functional layer of uterus Involved in secretory phase of uterine cycle Causes inhibition of FSH production Match each of the options above to the items below. LH Inhibin Estrogen Progesterone
Answers
LH causes ovulation of the mature follicle, estrogen causes development of the functional layer of the uterus, progesterone is involved in the secretory phase of the uterine cycle, and inhibin inhibits FSH production.
LH (luteinizing hormone) is responsible for triggering ovulation, which is the release of the mature follicle from the ovary. It stimulates the follicle to rupture and release the egg.
Estrogen plays a crucial role in the development of the functional layer of the uterus, also known as the endometrium. It promotes the growth and thickening of the endometrium in preparation for potential implantation of a fertilized egg.
Progesterone is involved in the secretory phase of the uterine cycle. After ovulation, progesterone levels rise, causing the endometrium to become more vascular and glandular, preparing it for potential implantation. If fertilization does not occur, progesterone levels decrease, leading to menstruation.
Inhibin acts as a feedback hormone that inhibits the production of FSH (follicle-stimulating hormone) from the anterior pituitary gland. It helps regulate the ovarian cycle by suppressing FSH secretion, thereby controlling the development and maturation of ovarian follicles.
In summary, LH causes ovulation, estrogen promotes the development of the uterus, progesterone is involved in the secretory phase, and inhibin inhibits FSH production.
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What are cila?
cartilage flaps on top of the trache
cartilage rings that make up the trachea
tiny hairs found in the trachea
vocal cords that run through the trachea
Answers
stress causes the body to react as in situation of "fight or flight". Please could you pls enlighten me further about this statement?
Answers
Fight-or-flight response refers to an organism's response when faced with an acute threat to survival. It is marked with physical changes that include nervous and endocrine changes preparing the organism to react or to retreat.
For example, when a snake faces a predator or a threat, its responses could be crawling away or acting as if it is ready to attack as its defensive displays. It could be through hooding, hissing, and raising the upper portion of their bodies to stand erect.
What would be affected negatively by contaminated watersheds?
crops
sewers
ОООО
chemicals
water cycle
Answers
Answer:
crops is the best choice here hope this helps
Answer:
a
Explanation:
Describe how a stream interacts with the sediment. Are sand grains or pebbles picked up first? Which is more easily Eroded (transported)?
Answers
Answer:
Most mineral sediment comes from erosion and weathering, while organic ... If the water flow is strong enough to pick up sediment particles, they will ... water system – in high flow areas, larger, gravel-sized sediment will settle out first. ... This loose soil is then easily carried into a nearby river or stream by rainfall and runoff
Explanation: