In order to digest a particle, the cell engulfs it and secretes digestive enzymes. Phagocytosis is the name of this process.
The protective cell in our body is called a white blood cell. They protect the body against invading infectious agents or disease-causing bacteria because they are present in the blood. According to the presence or absence of granules, WBCs are split into two groups:
(I) Granulocytes: The cytoplasm of these cells is granular. Even parasites can be killed by them. Phagocytosis is one of their functions. Neutrophils, eosinophils, and basophils make up the granulocytes.
Agranulocytes lack granules in the cytoplasm
(II). The lymphatic system contains them. They produce antibodies that help the body fight sickness. Parasites are not killed by them.
Lymphocytes and monocytes are the two types that exist.
(i) Macrophages: These immune system cells are in charge of capturing and eliminating foreign particles.
(ii) Mast cells: These are the protective cells found in our bodies that phagocytose germs. The bone marrow produces them.
(iii)RBCs are nucleated red blood cells that are present in the blood (iii). Gas transportation is their primary duty.
Therefore, the right response is (B). RBCs are not naturally phagocytic.
The macrophages that are already in our bodies are intended to serve as our body's initial line of defence. These cells identify the antigens and take them in. They reduce the foreign particles into smaller proteins, which T cells then react to.
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{Easy} What role do water masses play in the distribution of global heat? [Penn Foster]
A. They create cyclones as part of the Coriolis effect to spread out water temperatures.
B. They cause different ocean depths, with deeper ocean pockets staying warmer than shallower ocean pockets.
C. They're involved in thermohaline circulation.
D. They make the Atlantic Ocean less salty than the Pacific Ocean.
Answer:
A they create cyclones as a part of the Coriolis effect
What did the patterns Linneaus identified in the “Great Chain of Being” come to be called?
Answer:
Lovejoy (1936) identified three basic intellectual components of the Great Chain of Being, which he called the principles of Plenitude, Continuity, and Gradation.
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The axial skeleton includes : I’m correcting my work, please correct me if I’m wrong
The correct option is D. Skull, vertebrae and ribcage. The axial skeleton comprises the central axis of the skeleton, thus the limbs are not inlcuded in it, they belong to the appendicualr skeleton.
Sammi decides to design a model to show how the digestive and circulatory systems interact. She lines a large plastic tube with a corrugated cardboard tube. Then, she connects smaller plastic tubes to the large plastic tube. These small tubes connect to a pump. She drills small holes in the large tube so that all of the plastic tubes connect. She plans to run a green fluid representing food through the cardboard tube.
Match each part of Sammi's model to the bodily structure it represents. One bodily structure has already been labeled for you.
The digestive system takes nutrients from food and absorbs them. The circulatory system drives those nutrients to the rest of the body's cells. From the left to the right: blood vessels, heart, villi, digestive tract.
How do the digestive and circulatory systems work together?1. The digestive system is composed of different organs. Some of them mechanically break down ingested food, while others, through enzymatic action, take nutrients and let them available to be absorbed by the intestine. Villi increase the absorption area, enhancing the number of nutrients and water absorption. These are then driven to the rest of the body's cells
2. The circulatory system (composed of vessels, capillaries, veins, arteries, and the heart) takes those nutrients from the intestine walls and transports them together with the oxygen to different cells in the organisms where they are needed.
From the left to the right: blood vessels, heart, villi, digestive tract.
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Which is NOT abenefit ofbiodiversity? A. climate changeC. clean air and waterB. control of pestsD. control of soil erosion
The correct answer is A. climate change. Climate change is a direct consequence of greenhouse gas release by human activities.
what organ systems must be understood in detail by the medical doctors and bioengineers who devopl amputation techniques in preparation fro prothesis? explain why fro each system.
The skeletal system, the circulatory system, the neurological system, the muscular system, and the epithelial system are the ones that are affected by this problem.
What is amputation?Amputation is a surgical process in which a living person's limb is amputated. Additionally, prosthetics have been created throughout history to replace these components. To improve the quality of life for those who have had amputations, medical and bioengineering studies have dug into various elements of the body.
Circulatory system: Veins oxygenate all tissues and organs. To prevent a painful death after an amputation, the veins must be clipped and changed. To avoid dying portions, blood must flow properly.
Bones: without them, the body would be shapeless. Amputations require cutting and adapting bones to support a prosthesis.
Nervous system: All human nerves have stimuli receptors. After an amputation, nerves must be adjusted to prevent pain and discomfort from prostheses.
Muscular system: Muscles and bones allow movement. After an amputation, muscles must be changed to maximize movement and morphology for prosthetics.
Epithelial system: Skin covers the body. Therefore, after an amputation, the patient's skin must be operated on to sculpt a stump to avoid lumps, pain, and other skin issues.
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The nerve cells in the human nervous system seldom undergo mitosis. Based on this information,explain why complete recovery from injuries to the nervous system may not occur.
Nerve cells are referred to as amitotic because they lack centriole, which prevents them from undergoing mitosis and dividing to create new cells. Due to the incapacity of nerve cells to repair or regenerate, injuries to the nervous system can permanently harm or cripple a person.
What is a Nervous system?The brain, spinal cord, and a sophisticated nerve network are all parts of the nervous system. The brain and the body are communicated with via this system. All bodily functions are managed by the brain. From the brain, the spinal cord descends via the back.
The nervous system performs the following four primary tasks:
controlling the body's environment internally to maintain "homeostasis" The control of body temperature is one example of this.
reflexes in the spinal cord are programmed. The stretch reflex is one illustration of this.
learning and memory.
movement control that is voluntary.
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sex determination explain x chromosome and y chromosome
Okay bro, i can explain you :)
Sex determination.
Separate sex determining i.e. male and female.
In sex determination, male and female differs only through sex chromosomes i.e. x and y chromosome. x chromosome for male and y chromosome for female. Autosomes(non - reproductive cells) does not involve in sex determination. Only the sex chromosomes involve in sex determination. Overall, only this chromosomes ( x and y) decides whether the resultant baby is male or female. If it is x chromosome, then it is a female and if y chromosome, then it is a male.
7.Type the correct part of the virus, indicated by the number 7,________9. Type the correct part of the virus, indicated by the number 9____________
The viruses have 3 main parts, the genetic material, the capsid, and some proteins.
in the image, we can see that inside we have the genetic material, and it is protected by the capsid. So the number 7 would be the genetic material.
and the number 9 would be glycoproteins that help the virus to recognize the target cell and allow the viruses to get in the cell, besides keeping the integrity of the genetic material.
Which of the following theories can explain why people tend to made adjustments in their beliefs and attitudes to maintain consistency with their experiences and actions?
Question 9 options:
Cognitive expression
Cognitive dissonance
Cognitive adjustment
Cognitive association
The theory that explains why people tend to made adjustments in their beliefs and attitudes to maintain consistency with their experiences and actions is Cognitive dissonance.
What is Cognitive dissonance?Cognitive dissonance theory postulates that an underlying psychological tension is created when an individual's behavior is inconsistent with his or her thoughts and beliefs. The underlying tension then motivates an individual to make an attitude change that would produce consistency between thoughts and behaviors.
Cognitive dissonance theory is very important and needful for understanding the impact of role-playing on attitude change.
What is the theory of cognitive dissonance based on?
Image result for which theory can explain why people tend to make adjustments in their beliefs and attitudes to maintain consistency with their experiences and actions
The theory of Cognitive dissonance was proposed by Leon Festinger and was centered on how people try to reach internal consistency
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When choosing between methods of classical conditioning, why is systematic desensitization typically preferred over flooding?
Question 2 options:
Flooding gradually exposes a person to a feared object.
Systematic desensitization is a more intense experience.
Flooding is less intense than systematic desensitization.
Systematic desensitization gradually exposes a person to a feared object.
Which of the following refers to a classical conditioning method that exposes an individual to a harmless stimulus until fear responses to that stimulus are extinguished? A. Flooding B. Systematic desensitization C. Counterconditioning D. Spontaneous recovery
Flooding refers to a classical conditioning method that exposes an individual to a harmless stimulus until fear responses to that stimulus are extinguished.
Answer:
Systematic desensitization gradually exposes a person to a feared object.
Explanation:
Why were the oldest cultivated seeds ever found so well preserved?
The oldest cultivated seeds ever found were so well preserved so as to ensure that they are viable even after a long period of time.
What is Viability?This is referred to as the measure of the ability of the seed to remain alive and being able to reproduce in other to form a new offspring through various processes.
Seeds are grown or present under various conditions which could be harsh such as during a period of extreme hot or cold climatic conditions and there is the importance of it having to remain well preserved.
This is because it ensures that the seed is still viable and able to grown into a new plant. This is done through structures which prevents it from drying out or being influenced by other factors thereby making it the correct choice.
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Describe at least two positive and two negative relationships humans have with microbes. What are some advantages/disadvantages of each relationship?
The two positive relationships humans have with microbes are;
they provide us with medicinesthey help in the fermentation of foodThe two negative relationships humans have with microbes are;
they make humans sickthey cause spoilage of foodSome advantages of the positive relationships humans have with microbes are;
the medicines obtained from microbes are used in the treatment of diseasesfermentation of food increases the availability and enhances the taste of foodsSome advantages of the negative relationships humans have with microbes are;
they cause deaths and wastage of human resourcesthe spoilage of food reduces the availability of food.What are microbes?Microbes are small living organisms found in our environment that cannot be seen with the unaided eye except with the aid of microscopes.
Some examples of microbes in our environment are:
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why can’t a single cell constitute a system?
Answer:
Solution
Type of organisms based on cell number:
Based on cell numbers, organisms are grouped under two categories:
Unicellular organisms - organisms having a single cell.
Multicellular organisms - organisms having more than one cell or group of cells.
Unicellular organisms:
In several organisms, a single cell is capable of performing all the cell functions that are vital for its survival.
In such organisms, no division of labour is present.
There is no tissue or organ formation.
Examples - Amoeba, yeast, Chlamydomonas, etc.
If 30% of the nucleotides in a single-stranded RNA molecule are adenine, then what percent are expected to be
thymine?
(A) 0%
(B) 20%
(C) 30%
(D) 70%
If 30% of the nucleotides in a single-stranded RNA molecule are adenine, then what percent are expected to be thymine (C) 30%
Why is adenine present in RNA?Adenine is a basic nucleotide that combines with uracil in RNA and thymine in DNA to produce nucleotides. Adenine; Adenine has a number of roles in biochemistry, including supporting cellular respiration through the production of ATP, NAD, and FAD. Additionally, DNA and RNA's chemical components are used in the creation of proteins.
One of the two purine nucleobases—the other being guanine—used to create the nucleotides of the nucleic acids is adenine. Adenine and thymine form two hydrogen bonds in DNA to help stabilise the nucleic acid structures. Adenine interacts to uracil in the RNA that is needed to create proteins.
Carbon, hydrogen, and nitrogen are the elements that make up the nitrogenous base adenine.
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Pls help answer this question
Detroit, Michigan city had lead levels in their drinking water that was equal to what was found in Flint.
The correct option is (B) Detroit
According to the Centers for Disease Control and Prevention, lead exposure can impair cognitive development, especially in young children, and federal experts say no quantity of lead in drinking water is thought to be safe for their intake. Flint's lead water issue was caused by the city's decision to temporarily reduce costs by switching its water source to the Flint River without sufficient treatment, which corroded its lead pipes. After the water catastrophe in Flint, Michigan toughened lead drinking water standards in 2018, bragging that it had passed the country's most protective regulation. It enforced stricter guidelines for lead testing of water and required the replacement of outdated lead service lines.Learn more about the Flint water crisis with the help of the given link:
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HELPPPP PLEASE
Place these steps in order to
describe the changes that
occur in the organization of the
chromosome as the cell progresses
into mitosis.
a. The chromosome coils more
and more tightly, forming
supercoiled DNA.
b. Condensed, replicated
chromosomes attach at a
pinched region called the
centromere.
c. DNA is wrapped around histones
at regular intervals, forming
chromatin.
d. Interactions between parts of
histones compact the DNA.
The processes of the alterations in chromosomal organisation that take place as a cell enters mitosis.
The correct order is:
1. Chromatin is created by the regular wrapping of DNA around histones.
2. The DNA is compacted by interactions between histone component components.
3. The DNA becomes supercoiled as the chromosome coils ever-tighter.
4. Chromosomes that have been duplicated and compressed attach at a point known as the centromere.
What transpires to DNA throughout mitosis?
Therefore, during mitosis, cells don't simply randomly split their DNA into two heaps for the two daughter cells. Instead, they divided up their duplicate chromosomes in a methodical order. Prophase, Metaphase, Anaphase, and Telophase are the four basic phases of mitosis.
In what way do chromosomes separate during mitosis?
A mitotic spindle, a specialised structure made of microtubules, is responsible for separating the chromosomes. The cell's cytoplasm divides during this phase. It starts as soon as mitosis is complete.
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Question 6. A papa bear (Ffbb) with black fur (F) and blue eyes (b) mates with a
female bear (ffBb) that has white fur (f) and brown eyes (B). (show all your work!) (2
pts)
(a) What is the probability that they will have a cub (baby bear) with black fur and brown
eyes?
(b) What is the probability they will have a cub with while fur and blue eyes?
(c) Calculate the phenotypic ratio:
(d) Calculate the genotypic ratio:
(a) The probability that they will have a cub with black fur and brown eyes is 25%
(b) The probability they will have a cub with while fur and blue eyes is 25%
(c) The phenotypic ratio is = 1:1:1:1
(d) The genotypic ratio is= 1:1:1:1
male : Ffbb (black fur, blue eyes)
female : ffBb ( white fur brown eyes)
male gametes : Fb and fb
female gametes : fB and fb
male/
female Fb fb
fB FfBb ffBb
fb Ffbb ffbb
FfBb black fur brown eyes
ffBb white fur brown eyes
Ffbb black fur blue eyes
ffbb white fur blue eyes
What is phenotype?Phenotype is defined as observable characteristics or characteristics of an organism that are the result of the interaction of genes and environmental factors. These characteristics include physical appearance and other characteristics that we perceive.
The phenotype of an organism includes its physiological, biochemical and behavioural characteristics. Unlike genotype, which is inherited from parents, phenotype is influenced by lifestyle and environmental factors. Environmental factors include temperature, nutrition, humidity and the mental health of the body.
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Where does diffusion in the kidney diffuse from and where does it diffues to?
Answer:
Being Passive in the Kidney. Firstly, small soluable molecules can passively diffuse into the liquid in Bowman's Capsule from the Glomerulus. These molecules are usually molecules of glucose, urea, salts and water and diffuse from the capillaries into the solution of plasma without the use of energy.
Explanation:
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The volume of an irregular object could best be determined by
1. placing it in a beaker of water
2. calculating the circumference
3. comparing it to a known standard for mass
4. counting the number of flat surfaces
Answer:1. placing it in a beaker of water
Explanation:
You can find the volume of an irregular object by immersing it in water in a beaker or other container with volume markings, and by seeing how much the level goes up.
Which statement us true about a line and a point?
Answer:
A point has no dimension and a line has one dimension.
Explanation:
Which color of eyes is dominant? How do you know this?What does this mean in terms of inheritance?
The exercise tells us that 20 babies have been born in a maternity ward, and 10 of them have brown eyes, while the other 10, have blue eyes. The questions below are related to the dominant eye color, how we know it, and what it means in terms of inheritance. To this, we can answer that the dominant eye color is the brown one and that we know this due to the dominant alleles are represented with a capital letter, in this case, B, being b (for blue color) the recessive allele. In terms of inheritance, this means that if a parent with brown eyes (being BB, or Bb their genotype, but if we have that they have babies being they blue-eyed, then the genotype would be Bb), has babies with a parent that have blue eyes (being bb their genotype), the babies would have both phenotypes, as we can see in the following Punnet Square.
Please help, this is for my online marine science class
Guillaume Néry: The exhilarating peace of freediving
The unit discusses and defines hydrostatic pressure. Explain what hydrostatic pressure is and how this term relates to Néry’s talk.
Explain what the term “blood shift” means and how it works.
Describe what happens when Néry falls below 80 meters in depth. How must Néry react in order to survive, and even enjoy, falling to such depths?
Néry describes many aspects of the entire experience of free diving that he finds appealing. What aspect of the free-diving experience that Néry describes appeals to you most? Why?
The pressure exerted by or present within a liquid when it is at rest in relation to other bodies is known as hydrostatic pressure.
When a diver encounters a rise in the pressure of the surrounding water, the phrase "blood shift" is used. Due to this, the amount of blood being pumped into the chest increases.
The pressure increases significantly below 80 meters, and Néry can actually feel it in my body. He starts to truly feel like being choked.
Nery explains how he can unwind and let the water draw him deeper. This was the most fascinating to me.
How to illustrate the information?The force that fluids apply against the capillary wall is known as hydrostatic pressure.
Nery explains how he can unwind and let the water to draw him deeper. I'm drawn to this because I enjoy being in the water and enjoying the serenity of the silence. The fact that our bodies may be trained to defend ourselves and mount a defense against stressors also intrigues me.
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Which of the following is a genre?
2
A Mary Shelley
B Science fiction
C Frankenstein
D
Fear of technology
Answer:
Science fiction is a genre
Answer: B. Science Fiction is a genre.
In rats, coat color exhibits incomplete dominance. Yellow (Y) and white (W) rats are homozygous,while cream (YW) colored rats are heterozygous. If two cream-colored rats mate, what percentageof their offspring will be cream-colored?
The answer would be 50%.
If these two genotypes mate YW x YW the result would be
YY, YW, YW, WW. The percentage of the offspring would be:
YY- yellow 25%
YW- cream 50%
WW- white 25%
How did the building of the Dismal Swamp Canal impact North Carolina?
Responses
It allowed people to avoid muddy roads on the way to Fayetteville.
It sped up the travel of goods from Eastern North Carolina to Virginia.
It made Wilmington an important port and center of trade.
It led to business growth in the Piedmont.
The building of the Dismal Swamp Canal impacted North Carolina because it speed up the travel of goods from Eastern North Carolina to Virginia.
What was the significance of the Dismal Swamp Canal?The Dismal Swamp Canal was dug by hired enslaved labor that is opened for navigation in 1805 after completing the work under unfavorable conditions. The Dismal Swamp Canal length is 22 miles which provide trade between Virginia and North Carolina. In 1929, the Government of the United States of America bought the Dismal Swamp Canal and started to improve its structure and capacity. This canal is also called the oldest operating waterway in the country. It is also part of the Atlantic Intracoastal Waterway. So we can say that this Dismal Swamp Canal increases the speed of trade activities between the two regions.
So we can conclude that option B is the right answer.
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47. A main component of bone is substituted with hydroxyapatite Ca10(PO4)6(OH)2. Choose one of the alternatives that substitutes the hydroxyl ion? (Lec 13)
a. F−
b. CO32−
c. Cl−
d. Mg
The ion that is able to serve as an alternative for the hydroxyl ion is the carbonate ion. Option B
What is the bone?The bone is a structure that could be found in some animals. The main function of the bone is that the bone does provide support for the organism. There are about two hundred and six bones in the human body and most of them does provide support and rigidity to the human body.
The compound hydroxyapatite is found in the bone and it contains the hydroxyl ions, phosphate ions and the calcium ions which is the main ion that have been associated with the rigidity of the bone.
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8. How many valence electrons do the following
elements have?
a. magnesium
b. antimony (51)
c. chlorine
The valency of an element is the characteristic that governs how many other atoms can combine with its atoms.
a. Magnesium - 2
b. Antimony - 5
c. Chlorine - 1
What is meant by valency?An element's valency is its capacity for combination. The valency of elements in the same group of the periodic table is the same. The valency of an element is related to how many electrons are in the outer shell.
If the number of electrons in the outer shell is four or less, the valency of the atom is equal to that number.
If not, the valency is equal to eight minus the number of outer shell electrons. Calculating the valency is simple once you know how many valence electrons there are.
The valency of an element exists the characteristic that governs how many other atoms can combine with its atoms.
a. Magnesium - 2
b. Antimony - 5
c. Chlorine - 1
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Suppose you wanted to discribe an object to some one but you could not name which properties could you include in your description if you could not only share information that you can determine with your senses
In order to describe the object based on physical properties that one can determine with the senses, I will describe the weight, taste, mass, and color of the object.
What are physical properties of a substance?The physical properties of a substance are those properties that can be observed without changing the chemical nature or properties of the substance.
Physical properties can easily be observed with the senses such as taste, sight, sound, texture, or feel.
Some physical properties of a substance include:
massdensityvolumetastecolorodorTherefore, physical properties are determined by the senses.
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When researching a question using the scientific method, what is the next step after testing your hypothesis?
Question 2 options:
Draw conclusions.
Analyze the results.
Propose ways to duplicate your research.
Pose a question.
Answer:
propose way ...
Explanation: