Answer:
sperm must swim through water to reach and fertilize eggs
a person with no antigens on the red blood cell would have which blood type? type a type b type ab type o
The person with no antigens on the red blood cell would have blood type O.
Blood types are determined by the presence or absence of specific antigens on the surface of the red blood cells. Blood type O does not have A or B antigens, while blood types A and B have either A or B antigens, respectively. Blood type AB has both A and B antigens on the red blood cells.
When a person receives a blood transfusion, it is essential to match the blood types of the donor and the recipient. If the donor's blood has different antigens than the recipient's blood, the recipient's immune system will recognize the foreign antigens as invaders and mount an attack against them, leading to a transfusion reaction.
People with blood type O are considered "universal donors" because their blood does not have A or B antigens that could trigger an immune response in the recipient. However, they can only receive blood from other type O donors because they have antibodies against A and B antigens in their plasma.
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A study was conducted in a particular preschool to investigate whether there is a link between breastfecding and a child's level of intellectual functioning, 20 breastfed and 40 not breastfed (non-breastfed) four year old children were involved. Each child is allocated a unique ID number between 1 and 60 (inclusive). Each child had to answer a few basic questions. To motivate them to answer all questions, the investigator offered Whittaker's Miraka Kirīmi (chocolate) bar. (a) For each of the following scenarios, identify the named distribution that can be used to model X, including its parameter(s). i. Each day a randomly chosen child is given a chocolate bar. All 60 children are in the draw every day. Let X be the number of days before the child with ID number 1 is chosen twice. Note that the day on which the child with ID number 1 is chosen for the second time is not counted. [2 marks] ii. Five children are randomly chosen to sit around one table and do their test. Let X be the number of non-breastfed children chosen. [2 marks] (b) Refer to your choice of named distribution in 2(a)ii above and answer the following questions. i. Find the expected value of X,E(X), and the variance of X,Var(X). [2 marks] ii. What is the probability that at least one child in the group of five children chosen to do the test is breastfed? [2 marks]
The variance of X, Var(X), for the hypergeometric distribution, the formula is: 1.67
How to calculate the valueThe hypergeometric distribution has three parameters:central idea
N: the total population size (60 children in this case)
K: the number of success states in the population (40 non-breastfed children in this case)
n: the number of draws (5 children chosen in this case)
To calculate the variance of X, Var(X), for the hypergeometric distribution, the formula is:
Var(X) = n * (K / N) * ((N - K) / N) * ((N - n) / (N - 1))
Using the same values as before, we have:
Var(X) = 5 * (40 / 60) * ((60 - 40) / 60) * ((60 - 5) / (60 - 1))
= 1.67
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PLS HELP ME PLSSSSSSSS
Maddie’s favorite meal is breakfast, and she is careful to include healthy components along with her favorite foods. She knows breakfast helps to keep her energy levels up until lunch. Maddie's digestive system helps her body get energy from food. How do the nutrients from food get to the body's cells? A. The nutrients are distributed by the digestive system to the parts of the body that need them. B. The nutrients are picked up and transported around the body by blood from the circulatory system. C. The nutrients are absorbed directly into the cells that need them. D. The circulatory system brings nutrients to the digestive system to be processed for the cells.
Answer:c
Explanation:why i don’t know I just want the points
which difference did scientists notice in parts of zion national park that had higher species diversity compared with regions with lower species diversity?
Scientists have observed a clear difference between parts of Zion National Park that have higher species diversity and regions with lower species diversity. In areas with higher species diversity, scientists have observed a greater abundance of plant and animal life, as well as a wider range of species present.
Specifically, areas with higher species diversity tend to have a more complex habitat structure, with greater variation in vegetation types, water availability, and other environmental factors. This in turn provides more niches for species to occupy, leading to greater diversity overall.
Additionally, regions with higher species diversity tend to have more stable and resilient ecosystems, as they are better able to recover from disturbances such as fire or drought.
Moreover, higher species diversity led to increased resistance against disturbances, making the ecosystem more resilient to environmental changes. Thus, higher species diversity in parts of Zion National Park positively impacts the stability and health of the ecosystem.
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What molecule is produced during cellular respiration that provides energy.
Answer:
ATP
Explanation:
Food is converted into ATP during cellular respiration.
NOTE: *THIS IS FOR ANIMAL CELLS* you should specify plant or animal.
You are concerned that your significant other cheated on you and they are not the mother/father of the baby! Luckily for you, you know all about blood typing and how it works. Your baby is type B blood. You are type A blood. You think your significant other is type A blood. Is your significant other faithful? Explain using a Punnett square how you know.
Here is some info from the red cross...Universal donors are those with an O negative blood type. Why? O negative blood can be used in transfusions for any blood type.
Type O is routinely in short supply and in high demand by hospitals – both because it is the most common blood type and because type O negative blood is the universal blood type needed for emergency transfusions and for immune deficient infants.
Approximately 45 percent of Caucasians are type O (positive or negative), but 51 percent of African-Americans and 57 percent of Hispanics are type O. Minority and diverse populations, therefore, play a critical role in meeting the constant need for blood.
Types O negative and O positive are in high demand. Only 7% of the population are O negative. However, the need for O negative blood is the highest because it is used most often during emergencies. The need for O+ is high because it is the most frequently occurring blood type (37% of the population).
The universal red cell donor has Type O negative blood. The universal plasma donor has Type AB blood. For more about plasma donation, visit the plasma donation facts. There are very specific ways in which blood types must be matched for a safe transfusion. The right blood transfusion can mean the difference between life and death.
Every 2 seconds someone in the US needs a blood transfusion.
Use the interactive graphic below to learn more about matching blood types for transfusions.
Also, Rh-negative blood is given to Rh-negative patients, and Rh-positive or Rh-negative blood may be given to Rh-positive patients. The rules for plasma are the reverse.
Answer:
Type O is routinely in short supply and in high demand by hospitals – both because it is the most common blood type and because type O negative blood is the universal blood type needed for emergency transfusions and for immune deficient infants.
Approximately 45 percent of Caucasians are type O (positive or negative), but 51 percent of African-Americans and 57 percent of Hispanics are type O. Minority and diverse populations, therefore, play a critical role in meeting the constant need for blood.
Explanation:
Based on your reading of the reference article (Frank, Andrew J., et al. "Synthesis of silver nanoprisms with variable size and investigation of their optical properties: a first-year undergraduate experiment exploring plasmonic nanoparticles." Journal of Chemical Education 87.10 (2010): 1098-1101.) and on your analysis of the particle size data, propose one experiment to create nanoparticles of smaller size and one experiment to create nanoparticles of larger size.
In creating nanoparticles of a smaller size, the volume of the silver nitrate,the temperature and time can be reduced,surfactant can be altered, different reducing agent and altering AgNO3. In order to create nanoparticles of a larger size, silver nitrate should be increased, the temperature and time can be increased.
In order to create nanoparticles of a smaller size, the following experiment may be conducted. The volume of the silver nitrate solution should be reduced. The temperature and time of the reduction step can be reduced. The amount of surfactant, as well as its type, can be altered. A different reducing agent can be used. Altering the concentration of AgNO3, surfactant and/or sodium borohydride. In order to create nanoparticles of a larger size, the following experiment may be conducted. The volume of the silver nitrate solution should be increased. The temperature and time of the reduction step can be increased. The amount of surfactant, as well as its type, can be altered. A different reducing agent can be used. Altering the concentration of AgNO3, surfactant and/or sodium borohydride.
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Compared to worms, insects are highly responsive to environmental stimuli. Identify 2 external nervous system adaptations shown that make this possible in the insect?
Answer:
Eyes, Antenna and Hairs on their cuticle
Note: There are no diagrams or attachments provided.
Explanation:
Eyes
The eyes of insects serve the function of vision. Insects eyes are of two kinds; simple eyes or ocelli, and compound eyes. The simple eyes or ocelli can sense only light, darkness, and movement. The compound eye which consists of individual light receptive units called ommatidia can distinguish brightness and colour. More ommatidia in an insect's compound eye results in more clarity of vision
Hairs
Tiny hairs known as setae found all over the cuticle of insects are sensitive to vibration touch and sound and therefore serve as sense organs of touch and sound for insects.
Antenna
The antenna in insects serves various sensory functions such as sensing touch, air motion, heat, vibration (sound), and especially smell or taste.
The pattern of slow, rhythmic contractions of the small intestine during fasting is called the __________.
The pattern of slow, rhythmic contractions of the small intestine during fasting is called the Migrating motor complex (MMC).
The migrating motor complex (MMC) can be described as a rhythmic motility pattern of the small intestine that tends to occur at the time of fasting. The migrating motor complex (MMC) helps in clearing the digestive tube from materials that are undigested.
The migrating motor complex (MMC) is divided into four major periods which are mentioned below:
The smooth muscle inactivity period during which the action potential and contractions are lowered. This phase lasts from 45 to 60 minutes.Progressive peristaltic contractions period which results for 30 minutes.The period of rapid peristaltic contractions which occurs for 5 to 10 minutes. During this time, the pylorus passes the indigestible materials to the small intestine.A short transition periodTo learn more about the small intestine, click here:
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in the context of culture and behavior, our shared human biology enables to occur.
In the context of culture and behavior, our shared human biology enables various human behavior to occur. The biology of an individual is closely related to the culture they belong to and the way they behave.
The genetic makeup of individuals does not just affect their physical traits, but also their behavioral characteristics and cultural beliefs. In a similar way, culture and behavior also affect our biology.
Culture affects our mental and physical health, as well as our ability to learn and develop. It influences the way we perceive things and react to situations. Therefore, our shared human biology enables us to express our behavior in different ways depending on our cultural background, beliefs, and values .
In conclusion, biology, culture, and behavior are all interconnected, and each factor can affect the other. Our biology enables us to express our behavior in different ways depending on our culture and environment. Similarly, our culture and behavior can affect our biology, including our mental and physical health, learning abilities, and perception of things.
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Evolution is a process that affects
A. individuals, B. populations, C. planets, D. the universe
Evolution is a process that affects population. Therefore, option (B) is correct.
Evolution is a biological process which takes place over many generations within a population. It involves changes in the heritable traits of animals over time, resulting to the development of new species and the alteration of existing species.
Individuals contribute to evolution by transmitting their genetic material, but it is the collective changes within populations that drive evolutionary processes. As a biological concept pertaining to the diversity and adaptation of living organisms, evolution does not directly influence planets or the universe.
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Which of the following terms refers to a structure that is located on the same side of the body as another structure such as the right hand and right foot?
a. Anterior
b. Bilateral
c. Contralateral
d. Ipsilateral
e. Posterior
f. Proximal
The following terms refers to a structure that is located on the same side of the body as another structure such as the right hand and right foot is Ipsilateral. This term refers to a structure that is located on the same side of the body as another structure. The correct option to this question is D.
In anatomy, directional terms are used to describe the position of one structure relative to another. Ipsilateral refers to two structures that are on the same side of the body. For example, the right hand and right foot are ipsilateral structures because they are both on the right side of the body.
Ipsilateral is the term that refers to a structure that is located on the same side of the body as another structure.
Directional terms are an important part of anatomy and are used to describe the position of one structure relative to another. There are several directional terms, and it is important to understand their meanings. Ipsilateral is one such term, and it refers to two structures that are on the same side of the body.
For example, if you were to touch your right hand to your right foot, you would be touching two ipsilateral structures. Similarly, if you were to touch your left ear with your left hand, you would be touching two ipsilateral structures.
In contrast, contralateral refers to two structures that are on opposite sides of the body. For example, the right arm and left leg are contralateral structures.
Anterior refers to the front of the body, while posterior refers to the back. Bilateral means two structures on both sides of the body, while proximal refers to structures that are closer to the center of the body.
Directional terms are important in anatomy to describe the position of one structure relative to another. Ipsilateral refers to two structures that are on the same side of the body, while contralateral refers to two structures on opposite sides of the body.
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Which of the following images shows a chemical change occurring?
water condensation
© akchamczuk / iStock 2018
crushing a can
© gbrundin / iStock 2018
stretching an elastic
© emregologlu / iStock 2018
old rusted boat
Public Domain
Answer: Old rusted boat or stretching an elastic. If your good at math can you please help me and provide an explanation. Olivia has read 40 pages of a 70 page book, 60 pages of an 85 page book and 43 of a 65 page book. What is the percentage of pages Olivia has not read?
Explanation:
Please help you’d be a life save :) and please hurry if you can it’s due at 11:59 today right now it’s 1:55
Which of the following have a backbone?
-fish
-jellyfish
-grasshopper
-octopus
fish has a backbone....
Answer:
fish!
Explanation:
i eat/ catch fish all the time and the bones r hard to get out!
What is the classification of virus
Answer:
Viruses are classified into 4 groups based on their shape: filamentous, isometric , enveloped, and head and tail.
Many viruses attach to host cells to facilitate penetration of the cell membrane, allowing their replication inside the cell.
The virus core contains the small single- or double-stranded genome that encodes the proteins that the virus cannot get from a host cell.
Explanation:
not sure if this is what you are looking for
According to the Baltimore classification system, Viruses are classified into seven classes on the basis of their morphology and function.
What is Virus?A Virus may be defined as a type of microorganism that consists of a nucleic acid molecule in a protein coat and infects cells and may cause disease.
Viruses are classified into seven classes, each of which has its own families of viruses and has differing replication strategies.
Class 1: Double-stranded DNA viruses.
This type of virus usually must enter the host nucleus before it is able to replicate. An Example is Adenoviridae.
Class 2: Single-stranded DNA viruses.
Such types of viruses replicate within the nucleus and pertain highly in vertebrates. An example is Circoviridae.
Class 3: Double-stranded RNA viruses.
Such types of viruses do not depend on host polymerases for replication. An example is Birnaviridae.
Class 4: Single-stranded RNA viruses (positive sense).
Such types of viruses have polycistronic mRNA which is translated into a polyprotein. An example is Flaviviridae.
Class 5: Single-stranded RNA viruses (negative sense).
Such types of viruses must be transcribed by viral polymerases into complementary forms. An example is Filoviridae.
Class 6: Single-stranded RNA viruses (positive sense) that replicate through DNA intermediate.
Such types of viruses use the enzyme reverse transcriptase to convert the positive sense RNA into DNA. An example is Retroviruses.
Class 7: Double-stranded DNA viruses that replicate through a single-stranded RNA intermediate.
Such types of viruses have a double-stranded gapped genome that is subsequently filled into a covalently closed circle that serves as the template for the production of viral mRNA. An example is the Hepatitis B virus.
Therefore, it is well described above.
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stella wants to short 88 shares of moderna (tic:mrna). the price of mrna when the position was opened is $74.64. the initial margin is 40%, the maintenance margin 22%. the short interest is 51.51%. if the price of mrna goes to $37.03 one year after, what is the equity in the position (at the end of the first year)?
This amount is greater than the maintenance margin requirement of 1,443.02, Stella does not receive a margin call and can continue to hold the position. However, her equity has decreased significantly due to the decline in the stock price.
To calculate the equity in the position, we need to know the current market value of the shares, the initial margin requirement, and the amount of any outstanding loans or interest.
First, let's calculate the initial margin requirement. Since the initial margin is 40%, Stella must deposit 40% of the total value of the shares she intends to short. The total value of the shares is:
88 shares * 74.64/share = 6,561.92
Therefore, Stella must deposit:
40% * 6,561.92 = 2,624.77
This is the amount of equity she has in the position at the start.
Next, let's calculate the maintenance margin. The maintenance margin is the minimum amount of equity that Stella must maintain in the position to avoid a margin call. Since the maintenance margin is 22%, Stella must maintain:
22% * 6,561.92 = 1,443.02
If the equity in the position falls below this amount, Stella will receive a margin call and must deposit additional funds to bring the equity back up to the initial margin requirement.
Now, let's calculate the current market value of the shares one year later, when the price of MRNA has fallen to 37.03/share:
88 shares * 37.03/share = 3,256.64
The equity in the position at the end of the first year is the current market value of the shares minus any outstanding loans or interest. Since Stella has not taken out any loans or paid any interest, the equity is simply:
Equity = Market Value - Initial Margin Requirement
= 3,256.64 - 2,624.77
= 631.87
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Choose all the answers that apply.
Fossils can tell us about:
organism structure
climate
environment
landforms
Answer:
a b and c i think
Explanation:
Tanya is training a turtle for a turtle race. For every 1/6 of an hour that the turtle is crawling he can travel 1/24 of a mile. At what unit rate is the turtle crawling.
The rate at which Tanya's turtle travels is 0.25mi/hr
This question is from a topic in mathematics called Rate.
RateThis is a ratio in which different terms in different units are compared against each other.
In this question, for every 1/6 of an hour, the turtle is crawling 1/24 of mile.
Data given;
1/24 miles in 1/6 hourLet's express this mathematically
\(1/24 mi = 1/6 hr\\x mi = 1 hr\\x = (\frac{1}{24})/(\frac{1}{6})\\x = 0.25mi\)
What this calculation shows is that the turtle travels at 0.25mi/hr
The rate at which the turtle travels is 0.25 miles in an hour or 0.25mi/hr
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which of the following plays a big role in how girls experience early maturation?
The development of a young girl’s physical, cognitive, emotional, and social capabilities at an earlier age than usual is known as early maturation.
The age at which early maturation occurs varies greatly depending on the individual, and it is influenced by a variety of factors. There are numerous reasons why girls may experience early maturation, including environmental, genetic, and biological factors. The following plays a significant role in how girls experience early maturation: The onset of menstruation and hormonal changes are influenced by genes and hormones. Heredity has a significant impact on the rate and sequence of a girl's growth and development. As a result, the age at which a girl will experience early maturation may be influenced by heredity. Hormonal levels are influenced by the external environment. Stress, weight, and exercise are all factors that can affect hormonal levels and, as a result, the onset of early maturation.
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Help please! I’ve got a failing grade but I’m having trouble, I just want out of school man,
Answer:
bro how are u good morning
which of the following could never be part of the bark? group of answer choices cortex secondary xylem primary phloem phelloderm secondary phloem
The only option that could never be part of the bark is the Secondary Xylem. Here option B is the correct answer.
Cortex: The cortex is the region of tissue located between the epidermis and the vascular tissues (xylem and phloem) in the stem or root of a plant. It is commonly present in the bark, providing structural support and conducting materials. Therefore, the cortex can be part of the bark.
Secondary Xylem: Secondary xylem, also known as wood, is responsible for providing structural support to the tree. It is formed internally to the bark by the vascular cambium. While it is an essential component of the tree trunk, it is not part of the bark itself.
Primary Phloem: Primary phloem is the outermost tissue of the vascular bundle, responsible for transporting sugars and other organic compounds produced by the leaves. It is commonly present in the bark and contributes to its composition. Therefore, the primary phloem can be part of the bark. Therefore option B is the correct answer.
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Complete question:
Which of the following could never be part of the bark?
A) Cortex
B) Secondary Xylem
C) Primary Phloem
D) Phelloderm
E) Secondary Phloem
Out of the three below, which is considered most practical for use anywhere around the world? And why?Geothermal EnergyBiofuelBiomass
biofuel i sthe most practical for use around the world because it is easily available from biomass. Geothermal energy is location restricted and has many disadvantages such as posible volcanic eruptions, environment side effects and high cost.
1. Which of the following characteristics is not shared by ALL cells?
A) Have internal, membrane-bound compartments.
B) Capable of transcription and translation.
C) Capable of respiration.
D) Utilize enzyme driven reactions.
2. Which of the following structures contains the thylakoid membranes?
A) The Nucleus.
B) Lysosomes
C) Mitochondria
D) Chloroplasts
1. The characteristic that is not shared by ALL cells is "Have internal, membrane-bound compartments." .2. The structure that contains the thylakoid membranes is Chloroplasts
Explanation:Cells come in all shapes and sizes, but they all have a few things in common. For example, they all have a cell membrane that separates them from the surrounding environment. They also have cytoplasm, which is a fluid-like substance that fills the inside of the cell.
Additionally, they all have DNA, the genetic material that controls the cell's activities. While all cells share these characteristics, they do not all have internal, membrane-bound compartments. For example, bacteria are a type of cell that lacks these compartments.
2. The structure that contains the thylakoid membranes is Chloroplasts. Explanation: Chloroplasts are organelles found in plant cells that are responsible for photosynthesis. They contain a complex system of membranes called thylakoids, which are arranged in stacks called grana.
These membranes are the site of photosynthesis, the process by which plants convert sunlight into energy. The other options in the question do not contain thylakoid membranes.
The nucleus contains DNA, lysosomes contain enzymes that break down waste products, and mitochondria are the site of cellular respiration.
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here's is a table please complete it
U NEED TO BE GIVEN AN AWARD FOR THIS PIC ! U GOT GREAT POTENIAL TO BECOME A PHOTOGRAPHER ! (--_--)
How long can a muscle move before it uses up all
the energy stored within the muscle tissue?
a.) four to six seconds
b.) fifteen seconds
c.) thirty to sixty seconds
d.) several hours
Answer: . Four to six seconds
Explanation:
Answer: A. four to six seconds
Explanation:
In what stage do cells spend most of their life
Answer:
the interphase stage
info at
https://www.genome.gov/genetics-glossary/Cell-Cycle#:~:text=A%20cell%20spends%20most%20of,mitosis%2C%20and%20completes%20its%20division.
happy halloween <3
Which of the following is one of the most abundant elements in all living things?
A. Aluminum
B.Gold
C.Tin
D.Calcium
HELP PLEASE
Calcium is one of the most abundant elements in all living things. Thus, the correct option is D.
What are the essential elements found in living entities?The essential elements found in living entities are carbon, oxygen, hydrogen, and nitrogen. Carbon is present at almost 20% in the mass. It is the building unit of the living compounds.
Calcium is the most abundant element in all living things because it is the source of a component that forms bones in living compounds. Bones are present in large numbers in animals including humans.
Therefore, the correct option for this question is D.
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Answer:D. Calcium
Explanation:
7. Should parents be allowed to manipulate the genes of their children to select for certain
traits when the children themselves cannot give consent?
Answer:
Maybe
Explanation:
It depends. Is the trait harmful? Parents should do their best to avoid harmful traits for their children, but no not if its not harmful
Bill nye space exploration worksheet
Light is the fastest thing in the universe. It travels at 300,000 km/sec.
What is light about?Light is a form of electromagnetic radiation that is visible to the human eye. It travels in straight lines and at a constant speed of approximately 299,792,458 meters per second in a vacuum. Light is made up of particles called photons, which carry energy and momentum.
Light is essential for vision and allows us to see the world around us. When light enters the eye, it is focused by the cornea and lens onto the retina at the back of the eye.
Light has many other important applications in science and technology. For example, it is used in telecommunications to transmit information over long distances using fiber optic cables. It is also used in medicine for imaging and therapy, in manufacturing for precision cutting and welding, and in agriculture for plant growth and disease control, among many other applications.
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...... is the fastest thing in the universe.
It travels at .... km/sec.