The distance that a car covers in motion is determined by its speed and time in motion. If two cars are in motion for the same amount of time, the car with the greater speed will cover more distance than the car with a lower speed.
Speed is a scalar quantity that measures the rate at which an object changes position over a given period of time. Speed can be calculated using the formula: Speed = Distance/Time Distance, on the other hand, is a vector quantity that measures the total length covered by an object in motion from a fixed reference point. The distance covered by a car will be determined by its velocity, and velocity is a vector quantity that takes into account both speed and direction.
Two cars can travel the same distance in motion, but if their directions are different, they may have different displacements (the distance between their initial and final positions).The car that covers the most distance is the one that moves at a higher speed, all things being equal.
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2. What is a pedigree?
Answer:
please give brainlestExplanation:
1the record of descent of an animal, showing it to be purebred.
a purebred animal.
2the recorded ancestry, especially upper-class ancestry, of a person or family.
Answer: the origin and the history of something
Explanation:
Pedigrees use a standard set of symbols to make them easier to understand. Males are represented by squares, while females are represented by circles. Parents are connected by horizontal lines, and vertical lines stemming from horizontal lines lead to the symbols for their offspring
Anthophytes that live for only one year or less are called _____.
a.
annuals
c.
perennials
b.
biennials
d.
dicots
Answer:
annuals
Explanation: bc
Fill in the blanks with amino acids names
A gene contains a mutation in which a cytosine nucleotide (C) has bee replaced by an adenine nucleotide (A)
This mutation leads to the production of a dysfunctional protein, because a (BLANK) amino acid has been replaced by a (BLANK) amino acid.
Missense mutations replace a base by another one, leading the codon to codify for another amino acid, aletirng the protein's function. This mutation leads to the production of a dysfunctional protein, because a Cysteine amino acid has been replaced by a Phenylalanine amino acid.
What is a missense mutation?When a change occurs in a codon affecting a single base pair, it is known as a point mutation.
Points mutations might be either silent, missense, or nonsense.
A missense mutation is the point mutation that changes a DNA base by another one, and causes the mRNA codon to code for a different amino acid.
The mutation that replaces a single base for another one might have different consequences concerning the substitution site and changes in the physical structure of the protein.
For instance, if the substitution occurs near the protein active site, the polypeptide function might be severely affected.
In the exposed example, a cytosine nucleotide (C) has bee replaced by an adenine nucleotide (A).
Original sequence → ATG TTA AGG ACG GAT mRNA → UAC AAU UCC UGC CUA Protein → Tyr Asn Ser Cys LeuMutated sequence → ATG TTA AGG AAG GAT mRNA → UAC AAU UCC UUC CUA Protein → Tyr Asn Ser Phe Leu
This mutation leads to the production of a dysfunctional protein, because a Cysteine amino acid has been replaced by a Phenylalanine amino acid.
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the transmission of sound waves through the external ear and the middle ear is known as
The transmission of sound waves through the external ear and the middle ear is known as air conduction.
Air conduction involves the sound waves passing through the ear canal and causing the eardrum to vibrate. These vibrations are then transmitted through the ossicles in the middle ear, which amplify and transfer the vibrations to the inner ear. From there, the vibrations are converted into electrical signals that are sent to the brain for processing.
Air conduction is the most common method of hearing and is used in everyday listening situations. However, there is also another type of hearing called bone conduction, where the vibrations are transmitted directly to the inner ear through the bones of the skull.
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true or falsethe systolic reading in blood pressure measurement records the resting phase of the heart.
False. The systolic reading in blood pressure measurement does not record the resting phase of the heart.
In blood pressure measurement, two values are recorded: systolic pressure and diastolic pressure. The systolic pressure represents the higher value and is measured when the heart contracts or beats, pumping blood into the arteries. It corresponds to the maximum pressure exerted on the arterial walls during each heartbeat.
On the other hand, the diastolic pressure represents the lower value and is measured during the resting phase of the heart between beats when the heart is at rest and refilling with blood.
Therefore, the systolic reading in blood pressure measurement reflects the active phase of the heart when it contracts, rather than the resting phase.
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Phytochemicals are found in all protein-rich foods, including chicken, eggs, and fish.a. Trueb. False
Answer:
False
Explanation:
While preparing the MacConkey agar plate, a lab technician forgets to add bile salts to the medium. What will happen when E. coli is inoculated on theplate?A. It will grow up and the colonies will be colorless.B. It will not grow on the plate.C. It will grow up and the colonies will be pink/red.D. Cannot tell.
If a lab technician forgets to add bile salts to the MacConkey agar medium, the E. coli bacteria will grow up and form pink or red colonies on the plate. The correct answer is C.
MacConkey agar is a selective and differential medium used for the isolation and identification of Gram-negative bacteria, particularly the Enterobacteriaceae family, which includes E. coli.
The bile salts in the medium inhibit the growth of Gram-positive bacteria, while the crystal violet and neutral red dyes allow for differentiation between lactose-fermenting (pink/red colonies) and non-lactose fermenting (colorless colonies) bacteria.
Since E. coli is a lactose-fermenting bacteria, it will grow up on the MacConkey agar plate even if bile salts are not present. The absence of bile salts may reduce the selectivity of the medium, allowing for the growth of some Gram-positive bacteria, but the presence of crystal violet and neutral red dyes will still allow for differentiation between lactose-fermenting and non-lactose fermenting bacteria.
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Based on the materials of the course, which of the following statements is true?
Select one:
a. Based on OSHA requirements, it is more likely to make human immunodeficiency virus (HIV) vaccination mandatory for the housekeeping staff.
b. OSHA requires the front desk staff to be vaccinated against human immunodeficiency virus (HIV).
c. OSHA requires all staff in large hotels to be vaccinated against human immunodeficiency virus (HIV).
d. OSHA requires food and beverage department’s staff to be vaccinated against human immunodeficiency virus (HIV)
Based on the materials of the course, it is more likely to make human immunodeficiency virus (HIV) vaccination mandatory for the housekeeping staff is the correct statement. OSHA stands for Occupational Safety and Health Administration. Option A is correct
OSHA is the United States federal agency that is in charge of enforcing laws that deal with workplace safety, health, and occupational health. OSHA was established in 1971, and its primary mission is to ensure that employers are providing their employees with a safe and healthy working environment. OSHA has a wide range of regulatory powers that are used to ensure that employers are in compliance with the laws and regulations that deal with workplace safety and health.
Human immunodeficiency virus (HIV) vaccination is significant as HIV is a virus that damages the immune system, which is responsible for defending the body against illness. Without proper treatment, HIV can develop into acquired immunodeficiency syndrome (AIDS).There is currently no cure for HIV, but antiretroviral therapy (ART) is a treatment that can help manage the virus.
Vaccinations for Hepatitis B and HIV are now available to employees who work in settings where they may be exposed to infectious diseases. These vaccines can help reduce the risk of exposure to infectious diseases in the workplace. Therefore, it is more likely to make human immunodeficiency virus (HIV) vaccination mandatory for the housekeeping staff. Option A is correct
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an example of an interosseus fibrous joint is ________.
An example of an interosseous fibrous joint is the radioulnar joint.
The interosseous membrane between the radius and ulna bones in the forearm is known as the radioulnar interosseous membrane.
This interosseous membrane connects the two bones, acting as a fibrous joint. It aids in the stabilization of the radius and ulna and in the transmission of forces from the wrist to the elbow. Radioulnar joints are fibrous joints, and they are classified as syndesmoses.
They are located in the forearm, where they connect the radius and ulna. The joints are covered by a sheath of connective tissue that surrounds the interosseous membrane, which is composed of dense fibrous connective tissue.
An example of an interosseous fibrous joint is the radioulnar joint.
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describe the effects that enzymes can have on substrates
The host says that osteoblasts and osteoclasts are like “frenemies “ working closely and communicating with each other to achieve opposite actions. Where else in the human body have you seen this type of relationship
Osteoclasts are responsible for aged bone resorption and osteoblasts are responsible for new bone formation.
What are the functions of osteoclasts?Osteoclasts are the cells that degrade bone to initiate normal bone remodeling and mediate bone loss in pathologic conditions by increasing their resorptive activity.
The primary role of osteoblasts is to lay down new bone during skeletal development and remodelling. Throughout this process osteoblasts directly interact with other cell types within bone, including osteocytes and haematopoietic stem cells.
The area of the osteoclast next to bone forms a “ruffled border” consisting of multiple infoldings of the osteoclast cell membrane. It secretes acid and proteases across the ruffled border.
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Which statement correctly defines coevolution?A. two new species that differ from each other and their common ancestor in a particular traitB. two entirely unrelated species that end up with a similar trait as they adapt to similar conditionsC. two closely related species that evolve the same trait separately from each otherD. two entirely different species affecting each other’s evolution, as in predator-prey relationships
The statement that correctly defines coevolution is:
D: Two entirely different species affecting each other's evolution, as in predator-prey relationships.
Another example of coevolution is host-parasite relationship, which happens between totally separated species, but affects the way both of them will evolve.
how is simple diffusion different from other types of passive transport?
Simple diffusion is different from other types of passive transport due to the fact that molecules move from an area of high concentration to an area of low concentration, down a concentration gradient. Passive transport is the movement of molecules across a membrane from an area of high
concentration to an area of low concentration There are two main types of passive transport, which are simple diffusion and facilitated diffusion. In the case of simple diffusion, there is no involvement of any other molecule in the movement of substances through a cell membrane. In contrast, facilitated diffusion needs a carrier protein to transfer a molecule from an area of high concentration to an area of low concentration.
In addition to the two types of passive transport, there is also osmosis. Osmosis is the diffusion of water molecules through a selectively permeable membrane. It involves the movement of water from an area of high water concentration to an area of low water concentration across a selectively permeable membrane summary, the main difference between simple diffusion and other types of passive transport such as facilitated diffusion and osmosis is that simple diffusion does not need a carrier protein, whereas facilitated diffusion does, and osmosis only applies to water molecules.
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explain the following parts to a microscope: ocular: objective: stage: coarse adjustment: fine adjustment: condenser:
The eyepiece is also known as the ocular. This area is used to view objects through the microscope. It can be accessed from the microscope's top. It has a 10x standard magnification and a 5X to 30X optional eyepiece as options.
What purposes serve microscopes?An apparatus for enlarging minute objects is a microscope. The shape of a cell, as well as its nucleus, mitochondria, and other organelles, can be seen by scientists using some types of microscopes, which even allow them to observe an object at the cellular level.
Objective: The primary lenses for viewing specimens are those mentioned above. They can be magnified between 40x and 100x. One to four objective lenses can be found on a microscope, some of which are rare-facing and others that are forward-facing. There are various magnification levels for each lens.
Stage: This is the area where the specimen is displayed for inspection. The specimen slides are kept in place by stage clips. The most popular type of stage is a mechanical stage, which enables control of the slides by allowing them to be moved mechanically on the stage rather than manually.
Fine adjustment knobs and coarse adjustment knobs: These knobs are used to focus the microscope. They are referred to as coarse adjustment and fine adjustment. Adjustment knobs come in two varieties.
Condenser: Lenses called condensers are used to gather and concentrate light from the illuminator onto the specimen. They are located next to the microscope's diaphragm underneath the stage. They are essential for producing clear, sharp images at high magnifications of 400X and higher. Image clarity increases with increasing condenser magnification. With an Abbe condenser that has a high magnification of about 1000X, more advanced microscopes are available.
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the fastest-acting method of drug administration is a. oral ingestion b. intramuscular c. inhalation d. suppositories
Answer:
inhalation
Explanation:
Inhalation is the fastest-acting method of drug administration on the list. It is the fastest to get into the bloodstream and to the brain. The fastest is IV or intravenous.
Which organ is most susceptible to pressure changes during an explosion?
a. liver b. lung c. heart d. kidney
The organ that is most susceptible to pressure changes during an explosion is the lung, option b.
The lungs are highly sensitive to pressure changes due to their role in respiration and their structure.
During an explosion, the rapid release of energy generates a shockwave that propagates through the surrounding air or medium. This shockwave causes a sudden increase in pressure, followed by a rapid decrease.
The lungs, being air-filled organs, are directly exposed to these pressure changes.
The high susceptibility of the lungs to pressure changes is due to their compliance and vulnerability to barotrauma. The sudden increase in pressure can cause a significant overexpansion of the lungs, leading to damage to the delicate lung tissue, alveoli, and blood vessels.
Conversely, the rapid decrease in pressure can result in a sudden expansion of air within the lungs, leading to a condition known as blast lung injury.
While other organs such as the liver, heart, and kidney can also be affected by an explosion, the lungs are particularly vulnerable due to their direct exposure to pressure changes and their essential role in respiration.
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Hippopotamuses live in Africa’s rivers and lakes. They’re herbivores and coexist with other herbivores and carnivores. Which action could lead to a decrease in the number of hippos?
A.
a decrease in the number of predators
B.
a decrease in the number of other herbivores
C.
an increase in the number of producers
D.
an increase in the number of other herbivores
Answer:
D
Explanation:
hippo funny, use common sense silly bean
Answer:
D, an increase in the number of herbivores.
Explanation:
D is the correct answer because an increase in other herbivores would mean more competition for food, and more herbivores means that they would be eating/taking the hippo's main source of food.
Which type of vascular tissue is responsible for transporting water from the roots to the rest of the plant?
Answer:
Xylem tissue
Explanation:
Xylem, plant vascular tissue that conveys water and dissolved minerals from the roots to the rest of the plant and also provides physical support. Xylem tissue consists of a variety of specialized, water-conducting cells known as tracheary elements.
A spike in ____________ then causes ovulation, after which the remaining follicle cells form a corpus luteum.
A spike in Luteinizing hormone (LH) then causes ovulation, after which the remaining follicle cells form a corpus luteum.
Luteinizing hormone (LH) causes ovulation. During the menstrual cycle, LH levels increase to initiate ovulation. The follicle that has developed from the ovary, which is a small fluid-filled sac containing an egg, ruptures, releasing the egg in response to a surge in LH levels. After the egg is released, the remaining follicle cells form a corpus luteum. The corpus luteum then produces progesterone, which helps to prepare the uterus for pregnancy. If the egg is not fertilized, the corpus luteum will eventually break down, leading to the next menstrual cycle.
LH surge is necessary for ovulation to occur. The follicle that has developed ruptures in response to an LH surge and releases an egg. The remaining follicle cells form a corpus luteum, which produces progesterone to prepare the uterus for pregnancy. If the egg is not fertilized, the corpus luteum will eventually break down, leading to the next menstrual cycle.
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Pleaseeeeeeeee helppppppp
All living things need _____________. Organisms ___________ their energy in ________ ways.
Answer:
All living things need air, water, and food. Organisms use energy to survive, grow, respond to stimuli, reproduce, and for every type of biological process
Explanation:
Certain cells, such as those along the digestive tract, need to absorb a lot of materials. What unique features do you notice about the shape of these cells? How might this improve their ability to absorb materials?
Answer:
Microvilli are typical of these cells. These projections increase the absorptive area on the cell surface.
Explanation:
Epithelial cell surfaces show different structure shapes that allow the cells to adapt to and accomplish their functions. Most of these structures are related to the absorption surface and the need to move substances.
The development of microvilli is very common in epithelial cells. These are folds or finger-like projections emerging from the apical surface of the cell. Their principal function is to absorb. The microvilli of the intestinal epithelium are very uniform in size and distribution.
Did John Dalton use an observational study, a controlled experiment, or a mathematical model?
Answer:
we need a picture! if you provide one, then i can help in comments
Explanation:
When a molecule of CARBON DIOXIDE travels out of a lung cell to be
exhaled, the carbon dioxide moves with the concentration gradient using
no energy in the process. What kind of cell transport is this? *
O
Active Transport
O Exocytosis
O Diffusion
O Osmosis
Answer:
The answer would be Diffusion
What is the complementary sequence of TACGTATGAAAC?
Answer:
ATGCATACTTTG
Explanation:
The letters are alternate of each other.
T-A
A-T
G-C
C-G
ATGCATACTTTG is the compementary sequence
Which organism is a producer?
Oak tree
Mushroom
Mountain lion
Butterfly
Answer:
Oak trees is correct!
All of the following are characteristics of cancer cells EXCEPT:O They express oncogenes O They do not observe the Hayflick limit O They lack tumor suppressors O They do not enter O They generally have normal karyotypes »
Aneuploidy is a common characteristic of cancer cells, which often have complicated karyotypes with both structural and numerical alterations. therefore, option e is the right choice.
Cancer is a condition when a few of the body's cells grow out of control and spread to other bodily regions.
In the millions of cells that make up the human body, cancer can develop practically anywhere. Human cells typically expand and divide to create new cells as the body requires them. New cells replace old ones when they die as a result of ageing or damage.
Proto-oncogenes, tumour suppressor genes, and DNA repair genes are the three primary gene groups that are typically impacted by the genetic alterations that cause cancer. These modifications are commonly referred to as cancer's "drivers."
Genes that decrease tumours are also involved in regulating cell division and proliferation. Certain tumour suppressor gene mutations can cause cells to divide uncontrollably.
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I’ll give the Brainliest to who answers these question with a reasonable explanation.
1. Why is it important for Earth’s magnetic field that the inner core is hotter than the outer core?
A. The inner core provides the heat source for outer core convection.
B. The inner core provides the energy for Earth’s orbit around the Sun.
C. The inner core’s heat produces the Coriolis effect needed for rotation.
D. The inner core’s heat allows the outer core to conduct electricity.
————————————————————————————————————————————————————————
2. What does the Earth’s magnetic field reveal about the structure of the Earth’s layers?
A. That the mantle is solid.
B. That the outer core is solid.
C. That the outer core is liquid.
D. That the mantle is liquid.
Answer:
1.) The inner core's intense pressure—the entire rest of the planet and its atmosphere—prevents the iron from melting. The pressure and density are simply too great for the iron atoms to move into a liquid state.
2.)The Earth's magnetic field serves to deflect most of the solar wind, whose charged particles would otherwise strip away the ozone layer that protects the Earth from harmful ultraviolet radiation. One stripping mechanism is for gas to be caught in bubbles of magnetic field, which are ripped off by solar winds.
Explanation:
Answer:
1. A. The inner core provides the heat source for outer core convection.
The inner core is hotter than the outer core allows for the bottom of the outer core to be heated. As this happens, it expands and rises up to the top of the layer. As it rises, it cools and sinks back down to the bottom, just to be warmed again. This is convection and is one of the requirements for a magnetic field.
2. That the outer core is liquid.
The Earth’s magnetic field shows that the outer core must be liquid. The magnetic field comes from the Earth’s core, and in order for a magnetic field to be achieved, there must be a fluid material for things such as convection.
How many species of organisms are estimated to inhabit the Earth
Answer:
8.7 million
Explanation:
About 8.7 million (give or take 1.3 million) is the new, estimated total number of species on Earth -- the most precise calculation ever offered -- with 6.5 million species on land and 2.2 million in oceans.
Answer:
8.7 million
Explanation:
its the estimated value there isn't much more to explain
Which type of microscopy is used to view the internal structures of a specimen? transmission electron scanning electron atomic force light confocal fluorescence
Transmission electron microscopy (TEM) is used to view the internal structures of a specimen. Option A.
It is a type of electron microscopy that uses a focused beam of electrons to form images of the specimen on a fluorescent screen or on a photographic film. In this technique, the electrons pass through a thin section of the specimen, and the resulting image is an image of the internal structure of the specimen.
A transmission electron microscope (TEM) works by passing a beam of electrons through a specimen to create an image of the internal structure of the specimen. A sample must be thin enough to allow electrons to pass through it, and it is typically stained with heavy metals to improve contrast.
The electrons interact with the atoms in the sample, and some electrons are scattered while others pass through to create an image on a screen or detector.
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Amino acids found in the amino acid pool __________.
A. can be used for protein synthesis
B. help to synthesize essential amino acids
C. must come from animal products
D. require protein supplements to maintain their resources
Amino acids found in the amino acid pool A. can be used for protein synthesis
The amino acid pool refers to the collection of amino acids available within an organism's cells and tissues. These amino acids can be derived from various sources, including dietary protein intake and the breakdown of cellular proteins. The amino acids in the amino acid pool can be utilized for a variety of cellular processes, including protein synthesis.
Option B is incorrect because the amino acid pool does not directly synthesize essential amino acids. Essential amino acids are those that cannot be synthesized by the body and must be obtained through the diet.
Option C is also incorrect because the amino acids in the amino acid pool can come from both plant and animal sources. While animal products tend to be good sources of complete proteins containing all essential amino acids, plant-based sources can also provide individual amino acids that can contribute to the amino acid pool.
Option D is incorrect because the amino acid pool does not require protein supplements to maintain its resources. The body can recycle amino acids from protein breakdown and utilize them as needed. While protein supplements can be used to supplement protein intake, they are not essential for maintaining the amino acid pool.
So, option A is the correct answer.
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