Answer: Option D) there are no holes for blood to enter or leave the system
The human cardiovascular system is considered closed because there are no holes for blood to enter or leave the system
Explanation:
The closed circulatory system are made up of blood vessels called arteries from the heart that branch into small units called capillaries but eventually join up with other blood vessels called veins that are connected to the heart. So, blood is always confined to circulate within the blood vessels and the heart as there are no holes for blood to enter or leave the system
Thus, the human cardiovascular system is considered closed
Answer:
d
Explanation:
edge
What is the name of the process where a material that is weak enough to flow will rises when it is hot and sinks when it is cool causing a circulation cell?
Answer:
Convection process
Explanation:
The process of convection is commonly takes place in the mantle portion of the earth and also at the atmosphere.
This process is usually defined as the process where the materials are heated at a high temperature, thereby making them less denser, and due to their low density they are gradually pushed upward into the upper zones. As the materials rises up, the density gradually increases due to the lowering of the temperature, and then the materials again sinks. This give rise to the formations of a circulating cell, which are commonly known as the convection cells.
Identify the lysogenic virus:
A. Measles
B. Chicken pox
C. Small pox
D. Flu
Answer:
Flu
Explanation:
If you were studying the effects of climate change on the geographic ranges of species living in the mountains and your climate records showed that mean temperatures were increasing, which species would you be MOST concerned about from a conservation standpoint?
-a species that is a habitat generalist and lives at low elevations
-a species that is a habitat specialist and lives at the highest elevations
-a species that is a habitat specialist and lives at low elevations
-a species that is a habitat generalist and lives at middle elevations
-a species that is a habitat specialist and lives at middle elevations
A species that is habitat specialist and lives at the highest elevation.
Explanation:
An ecosystem consist of plants, animals as well as micro-organisms but due to climate change the plants as well as animals are in danger . The case that has been provided in the question where due to climate change the temperature rises as a result the species living at the highest elevation are in problem .
Due to rise in temperature the snow is melting and the sea water level is rising. The animals and plants adapt themselves according to the climate where they are residing but suddenly if climatic change take place they will be unable to survive.
The animals which are mostly affected due to climatic change are snow leopard, polar bear, giant panda.
The interaction between the biotic and the abiotic components of an environment is called an ecosystem.
The correct option of the following is B.
The arrangement of the living material and the non-living material altogether is called an ecosystem, the abiotic and non-living materials are wind, water, gases, and etc.
The earth the different levels depending on the longitude and the latitude. Climate change is due to the increase in the amount of CO2 in the atmosphere.
The availability of the gases is very less in the highest elevation due to an increase in pressure. Therefore, climate change due to increases in Co2 will impact the highest elevation location.
Hence, the correct option is B that is - a species that is a habitat specialist and lives at the highest elevations.
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Almost half the birds in the yard were brown cardinals and the rest were bright red cardinals, so Jimmy perceived them as two distinct groups of birds. This best illustrates the principle of:__________.1. Connectedness2. Similarity3. Closure4. Relative clarity
Answer:
The answer is Similarity
Explanation:
The distinct features of the two groups of birds i.e brown cardinals and bright red cardinals illustrates the principle of similarity. The principle of similarity states that things that share visual features such as shape, size, color, texture, value or orientation will be seen as belonging together or being in a unified group
Final answer:
Jimmy's categorization of birds into brown and bright red cardinals based on color best illustrates the principle of similarity, a key concept in Gestalt psychology where items that share common features are perceived as part of a group.
Explanation:
The scenario where Jimmy perceived almost half the birds in the yard as brown cardinals and the rest as bright red cardinals, categorizing them into two distinct groups based on color, best illustrates the principle of similarity. The principle of similarity is a concept within the theory of Gestalt psychology which suggests that elements that are alike tend to be perceived as a group. This is because our minds tend to organize sensory input into groups or categories that share common attributes. For instance, in sports, fans easily differentiate teams based on the color of their uniforms, grouping players accordingly. This shows how the principle of similarity operates in everyday observations and categorizations, much like Jimmy's classification of cardinals by their color.
How do carbohydrates contain and/or display information for cells?
Answer:
Carbohydrates may be defined as the polymers of the sugars and one of the most important biomolecule of the living organisms. Carbohydrates plays an important structural and functional role.
Carbohydrates are always present on the exoplasmic surface of the plasma membrane. The are present in the association with the proteins and lipids as glycoproteins and glycolipids. These carbohydrates acts as the signaling molecule that display information on cell surface.
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What part of your ear is responsible for the popping sensation you feel when you’re flying in an airplane?
Answer:
Eustachian tube
Explanation:
High blood sugar Select one: a. Is termed hypoglycemia and stimulates alpha islet cells to produce glucagon b. Causes beta islet cells to produce glucagon c. Results in the the hypothalamus releasing insulin into the blood d. Stimulates the release of insulin by beta islet cells
Answer:Stimulates the release of insulin by beta islet cells
Explanation:High blood sugar level is called hyperglycemia.
It is very important for the body to regulate it's blood sugar level. This is done by hormones; insulin and glucagon.
When blood sugar rises, the beta cells of the pancreas produces insulin. This insulin reduces the blood sugar level by storing up glucose in the body.
High blood sugar level leads to diabetes.this condition occurs when the pancreas does not produce Insulin or produces insufficient insulin or the body becomes resistance to the activity of insulin.
Patients with diabetes have to take shots of insulin in order to keep their blood sugar level within the normal range.
When the blood sugar level is low, glucagon is produced by the alpha cells in the pancrease.glucagon converts stored glucose back into forms the body can use .
The correct option is (d). High blood sugar stimulates the release of insulin by beta islet cells.
When blood sugar levels rise, the beta cells in the pancreas are stimulated to release insulin. Insulin is a hormone that helps cells throughout the body absorb glucose and use it for energy. This process lowers blood sugar levels, counteracting the state of hyperglycemia (high blood sugar).
Option a is incorrect because hypoglycemia refers to low blood sugar, not high blood sugar. Hypoglycemia stimulates alpha islet cells to produce glucagon, which raises blood sugar levels.
Option b is incorrect because high blood sugar does not cause beta islet cells to produce glucagon; rather, it stimulates the production of insulin.
Option c is incorrect because the hypothalamus does not release insulin; insulin is released by the beta cells of the pancreas. The hypothalamus is involved in regulating many body functions, including hunger and thirst, but insulin release is not one of them.
Please help, which is a characteristic of living organisms? (Select all that apply.)
Answer:
living organisms make more living organisms.
living organisms adapt and evolve.
living organisms move and breath.
Part A How do the potential energy and the kinetic energy change when the skateboarder is at the top or the bottom of the hill? Why do you think this change occurs?
Answer:
The potential energy (P.E) and the kinetic energy (K.E) are two types of distinct energy that is commonly observed in our day-today's life.
Usually, K.E is defined as a type of energy that is produced when an object is in motion. Where, as P.E is a type of energy that is stored in an object when that object is placed at a certain height.
In the given condition, when the skateboarder is at the top of the hill, then at that position, it is comprised of maximum P.E. As the he slowly comes down the hill, then the P.E gradually decreases, and the K.E gradually increases. This shows the P.E is slowly changing into the K.E. And as it comes down, the K.E increases, and eventually when he stops, then both the K.E and P.E becomes zero.
This changes occurs because energy can never be created nor destroyed, and it changes from one form to another.
Answer:
The potential energy and kinetic energy are always in flux. At the top of the hill, potential energy is at its highest and kinetic energy is at its lowest because the skateboarder stops for just a moment before being pulled down the hill by the force of gravity. At the bottom of the hill, kinetic energy is the highest because the skateboarder reaches maximum speed.
Explanation:
PLATO
Select the correct statement about blood flow. A) It is relatively constant through all body organs. B) It is measured in mm Hg. C) It is greatest where resistance is highest. D) Blood flow through the entire vascular system is proportional to cardiac output.
Answer:
The correct option is (D). The value of cardiac output in the case of the human heart is approx. 5 liters in a minute. The multiplication product of heart rate and stroke volume gives the cardiac output.
Explanation:
The blood flow serves as the parameter for the calculation of cardiac output. For the restoration of homeostasis, increase or decrease in the cardiac output leads to the simultaneous increase and decrease in the blood flow and pressure respectively. Also, the reduction of cardiac output and venous return signifies the higher value of the tidal volume. The associated parameters namely stroke volume and heart rate is also affected by certain factors. Some of them includes age, gender, contractility, heart size and duration of contraction.
Besides the flow of blood in the body depends on the oxygen requirement of the target cell.
The correct statement about blood flow - D) Blood flow through the entire vascular system is proportional to cardiac output.
Blood flowis the movement of blood through the vessels from arteries to the capillaries and then into the veins
reaches almost every cell in the body and returned to the lungs after removing oxygen.The heart is the organ that regulates this flow by pumping it to the various body parts.different parts of the body might have different flow rates.the amount of blood the heart pumps each minute which is called cardiac output is proportional to Blood flow through the entire vascular system.Thus, the correct statement about blood flow - D) Blood flow through the entire vascular system is proportional to cardiac output.
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The pain of a migraine is caused by: A. vision loss B. Blood vessels narrowing, resulting in less blood flow to the brain C. Blood vessels expanding, which allows more blood flow to the brain D. Muscle Tension in shoulders and neck
Explanation:
Loss of vision can happen out of nowhere or grow step by step after some time. Vision misfortune might be finished (including the two eyes) or incomplete, including just one eye or even certain pieces of the visual field. Vision misfortune is unique in relation to a visual impairment that was available during childbirth, and this article is worried about reasons for vision misfortune in a person who recently had a typical visionHence, the right answer is option A "vision loss"
A scientist wants to change the DNA of a sexually reproducing organism and have the new DNA present in every cell of the organism. In order to do this after fertilization, she would change the DNA in the:_______1. Zygote2. Placenta3. Testes of the father4. Overies of the mother
Answer:
1. Zygote
Explanation:
A zygote is formed due to the fertilization of the female egg by the sperm cell.
A zygote cell is eukaryotic in nature. It is also a diploid cell because it is the coming together of a sperm cell which is a haploid cell and a female egg which is also a haploid cell.
A zygote cell contains DNA from both the sperm and the egg.
This is why in other to change the DNA of a sexually reproducing organism after fertilization and have an new DNA present in every cell of the organism, the scientist would have to change the DNA in the Zygote.
Which is secreted by osteoblasts during bone deposition?
Osteoblasts, during bone deposition, secret an extracellular matrix made up of collagen and other proteins. This matrix is later mineralized to form bone tissue.
Explanation:The cells known as osteoblasts play a crucial role in the process of bone formation and growth. During the process of bone deposition, osteoblasts are actively involved in secreting an extracellular matrix that consists of collagen and other proteins. This matrix subsequently mineralizes to form bone tissue. Hence, in answer to your question: osteoblasts secrete an extracellular matrix, essentially made up of collagen and other proteins, during the process of bone deposition.
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Osteoblasts, which are involved in bone formation, secrete osteoid, an uncalcified matrix that hardens into bone when mineral salts are deposited onto it. Trapped within this hardened matrix, osteoblasts then transform into osteocytes, the primary and most common cell type in mature bone.
Explanation:Osteoblasts, the bone cells responsible for forming new bone, secrete osteoid, which is an uncalcified matrix. This osteoid hardens within a few days as mineral salts are deposited on it, thus entrapping the osteoblasts within. Once entrapped within this matrix, the osteoblasts transform into osteocytes, which are the primary cells of mature bone and the most common type of bone cell.
Osteoblasts are found in the growing portions of bone, including the periosteum and endosteum, and they do not divide. They synthesize and secrete the collagen matrix and calcium salts, vital components for bone formation. This process is crucial in maintaining the mineral concentration of the matrix, improving bone density, and ensuring healthy bone growth.
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If you put $7850 in the atm each day, what percent of the days in a month should you expect to run out of cash
Answer:
23.33%
Explanation:
Money put in ATM per day=$7850
We have to find the percent of days in a month you should expect to run out of cash.
Form given data
There are 7 days in which you run out cash more than $7850
Total number of days in a month=30
Percent formula:[tex]\frac{corresponding \;days}{Total\;number\;of\;days}\times 100[/tex]
Using the formula
Percent of the days in a month you should expect to run out of cash=[tex]\frac{7}{30}\times 100[/tex]=23.33%
Erythropoietin is a product of the kidney. is produced in response to increased blood pressure. is produced by the red bone marrow. is found both in the plasma and inside red blood cells. inhibits the production of erythrocytes.
Answer: is produced by the red bone
Explanation:
Erythropoietin is a glycoprotein hormone produced within the marrow of long bones, and helps to stimulate the various stages of development of erthryocytes (red blood cells) through a process called erythropoiesis that also occur in the bone marrow.
Fishing Gear sells a range of fishing products to outdoor enthusiasts and serious fishermen. Fishing Gear wants to reach its target market in a way that minimizes intrusiveness. Which of the following would be the best fit for Fishing Gear?
a. personal selling
b. print ads in Fishing and Hunting News
c. commercials on cable television
d. emails to all individuals with a fishing license
e. banner ads on websites
Histones are:____________ a) found in polyribosomes. b) enzymes found in lysosomes. c) proteins of the cytoskeleton. d) proteins associated with DNA in the nucleus. e) on the surface of rough endoplasmi
Answer:
D
Explanation:
Histone coat DNA
The primary mRNA transcript is edited much as you edit a research paper before submitting it. Which of the following editing processes is correctly related to the analogy? A. cross out unnecessary phrases: B. cut out introns capitalize beginning of sentences: C. add a poly-A tail punctuate each sentence: D. insert a stop codon proofread paper: E. DNA polymerase replaces wrong bases
Answer:
Cross out unnecessary phrases: Cut out introns.Explanation:
The mRNA is a transcript of DNA . Primary mRNA transcript is edited before translation.
Mature mRNA is transcribed into protein, which is the final product of central dogma.
mRNA contains introns and exons , introns are removed by splicing.
the analogy of mRNA editing is Cross out unnecessary phrases: Cut out introns.
Consider the parts of the digestive system, particularly the place where water is removed before feces are excreted. Which organ is the mostly likely to be responsible for a bout of diarrhea?
Answer:
The colon.
Explanation:
The colon, also known as the large intestine is one of the major organs of the digestive system and plays a vital role in the processing of food and excretion of waste. It is divided into the ascending colon, transverse colon, descending colon and sigmoid colon.
The colon has a large surface area and plays a major role in the reabsorption of fluids and the processing and formation of waste which it pushes towards the rectum to be expelled.
Diarrhea is a condition which is characterized by frequency of bowel movements and passage of loose and watery stools. It has various causes most of which affects the normal functionality of the colon thereby limiting it's ability to reabsorb water and fluids. Such causes which affect the colon include; Bacterial infections, laxative abuse, diseases of the colon such as ulcerative colitis and Crohn's disease etc.
What do barbell curls and dips have in common? A. They are both leg exercises. B. They both use free weights. C. Neither exercise is isotonic. D. They are both arm exercises. Please select the best answer from the choices provided. A B C D
Explanation:
Barbell curls and dips both are arm exercise to decrease the weight of arm and musclesThis is perform by the flexing of both elbows and keeping your shoulder bone withdrewDo not allow heavy weight from lower back to arch and push up to about chest levelKeep the spine in zero potential positionDetermine the width of grip and your elbow to ought the potential position of exerciseHence the right answer is option D "they are both arm exercise"Weighted barbells are used during performing exercises that target the muscle biceps. An upper body exercise for increasing strength is called dips.
The correct option is:
Option D. They are both arm exercises.
This can be explained as:
Dips and barbell curls are the arm exercise that is for reducing the fats in arm muscles and builds triceps and biceps.They both are performed by flexing arms and withdrawing the shoulder bones.They both are used for achieving defined muscles and arms.Therefore they both are arm exercises.
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Flat bones consist of spongy bone sandwiched between compact bone. Is this statement true or false?
Explanation:
Each osteon is made out of concentric rings of a calcified network called lamellae (solitary = lamella)the lacunae and osteocytes are found in a grid-like system of network spikes called trabeculae (particular = trabecula) (Figure (Links to an outer site.)). The trabeculae may give off an impression of being an irregular system, however every trabecula shapes along lines of worry to give solidarity deep down.This system of flat bones consist of spongy bone permits supplements to be moved to the osteocytes and squanders to be expelled from themHence, the right answer is "flat bones consist of spongy bone sandwiched between compact bone is true statement"The statement is true. Flat bones do consist of spongy bone sandwiched between compact bone, offering protection and a surface for muscle attachment.
Explanation:The statement that flat bones consist of spongy bones sandwiched between compact bones is indeed true. These flat bones such as the ribs, the sternum, and parts of the skull, are relatively thin, flattened, and usually curved.
They have two parallel layers of compact bones sandwiching a layer of spongy bone between them, offering protection to body organs and providing a surface for muscle attachment. The spongy bone also houses bone marrow, where blood cells are produced.
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How do limiting factors affect the carrying capacity of an environment
Answer:
They prevent a population from exceeding a certain number.
Anterograde movement of transition vesicles is from __________. Anterograde movement of transition vesicles is from __________. the rough ER to the trans Golgi the trans Golgi to secrete at the plasma membrane the rough ER to the cis Golgi the cis Golgi to the trans Golgi
Correct Question:
Anterograde movement of transition vesicles is from __________.
A. the rough ER to the trans Golgi.
B. the trans Golgi to secrete at the plasma membrane.
C. the rough ER to the cis Golgi.
D. the cis Golgi to the trans Golgi.
Answer:
C. the rough ER to the cis Golgi
Explanation:
Vesicles are small enclosed sacs located inside or outside a cell. They are formed whenever there is a need for secretion of substances or transportation of materials from one organelle to another organelle within cell. Vesicles can also be used to store nutrients or water in the cell.
We have 3 classes of vesicles and they are:
a. Lysosomes
b. Transition or transport vesicles
c. Vacuoles.
The anterograde movement of transition vesicles is from the rough Endoplasmic Reticulum to the cis Golgi apparatus.
This movement takes place when proteins are made in the ribosomes found in the Endoplasmic Reticulum. The transition vesicles now transport this proteins from the rough Endoplasmic Reticulum to the cis Golgi apparatus where they get matured before they are released into the cytoplasm.
The following are assessment finding for a client with pre-eclampsia: blood pressure 158/100; urinary output 50 mL/hour; lungs clear to auscultation; urine protein 11 on dipstick; edema of the hands, and feet. On the next hourly assessment, which new assessment finding would be an indication of worsening of the pre-eclampsia
1)Blood pressure 158/104
2)urinary output 20ml per hour
3)Reflexes 21
4)Platelet count 150,000
Answer: The correct answer is (2) urinary output 20ml per hour
Explanation:
Preeclampsia is a condition in pregnant women, or could develop after delievry, where her blood pressure rises significantly, >140/90 mmHg(recorded on two occasions,atleast 4 hours apart).Moreover urine test indicates protein in her urine(proteinuria), swelling particularly of hands,legs and feet(edema),severe headaches along with many other symtoms.
On the next hourly assessment,
• The client's BP was recorded as 158/104, which is almost the same as it was initially recorded,i.e 158/100, which means her BP did not rise significantly.
•The client's reflexes are normal
•The client's platelet count is normal too, although it is on a lower side(normal range is between 150,000-450,000)
•Decrease in urinary output(20ml/hr) is an indication of worsening of preeclampsia because this indicates there is decreased renal perfusion which may subsequently lead to decreased GFR(glomerular filtration rate).
Which kingdom of living things consists entirely of multi-celled
Complete Question:
Which Kingdom of living things consists entirely of multi-celled, heterotrophic organisms?
A) Animal
B) Fungi
C) Plant
D) Protist
Correct Option:
Animal Kingdom of living things consists entirely of multi-celled, heterotrophic organisms.
Option: A
Explanation:
The system of scientific classification in biological science is categorized into seven main groups: kingdom > phylum > class > order > family > genus > species. Here the kingdom is the largest group while smallest is the species. The term phylum is being used in the Kingdom of Animals, and is the second largest group.
The Kingdom of Animals is made up of multi-cellular, heterotrophic species which feed on other entities to survive. Some of the animal properties in this kingdom are able to establish, function independently, and reproduce during their existence.
Adrian is recovering from schizophrenia. She has been taking high doses of antipsychotic medications for a very long period of time and has begun to experience uncontrollable movements of her mouth and tongue that make her appear as if she were chewing food in a very exaggerated way. Adrian is experiencing the symptoms of:__________
a) angina.
b) tardive dyskinesia.
c) blepharochalasis.
d) scleritis.
Answer:
Tardive dyskinesia.
Explanation:
Schizophrenia may be defined as the condition in which the individual is unable to accept reality and interpret the reality in different ways. The symptoms are hallucination, disrupted speech and nehativity.
Tardive dyskenia is the medical condition in which the individual cannot control their hand and body movements. This condition might occur due to the medication that have been taken to treat the schizophrenia. The drugs inhibits the effects of dopamine that causes tardive dyskenia.
Thus, the correct answer is option (b).
Answer: Option B
Explanation:
Tardive dyskinesia is a problem raised due to side effect of the antipsychotic medications. These classes of drugs are used to treat the medical conditions like schizophrenia and other mental disorders.
In this problem there is an uncontrolled movement of the body parts.One might blink eye, movement of tongue in such a way that it appears like chewing food, waving the arms without any reason.
Hence, the correct answer is option B
As a result of chronic stress associated with an intense high school weight-lifting program, a 15-year-old boy suffers an avulsion fracture of the greater tubercle of the humerus. In the ER, he displays difficulty initiating abduction of the upper limb. Which muscles was involved in this fracture?
Answer:
The muscle involved in this fracture is supraspinatus.
Explanation:
Supraspinatus is one of the rotator cuff muscles, along with infraspinatus, teres minor and subscapularis muscles. Supraspinatus is located deep to the trapezius muscle in the posterior scapular region, extending from the supraspinous fossa of scapula to the proximal humerus.
Together with the other rotator cuff muscles (infraspinatus and teres minor ), supraspinatus stabilizes the glenohumeral (shoulder) joint during the movements of the upper limb. Additionally, it assists in the abduction of the arm.
Avulsion of this structure could result in detachment of any of these rotator cuff muscles, depending upon the size and scope of the fracture. However, the wrestler is unable to initiate abduction of the upper limb, which implies damage to the supraspinatus muscle.
It's easier to train a pigeon to peck for a food reward than to flap its wings for a food reward. This illustrates the importance of ________ in learning.
Answer:
It's easier to train a pigeon to peck for a food reward than to flap its wings for a food reward. This illustrates the importance of Shaping in learning.
Explanation:
The Shaping process involves the steps which makes or even tempts any individual to carry out such actions which are not natural or does not belongs to the innate system of the individual but there are some influencing factors involved for the organism which makes to under go the very process that happens.
Which of the following is least likely to be a source of new whole genes in a genome? A. Gene duplication B. Horizontal gene transmission C. Point mutations D. Transposable element insertion
Answer:
C. Point mutations
Explanation:
Point mutation involves the insertion or deletion of a base pair or the substitution of a single base for another in a gene. Point mutation rarely cause a significant change in a gene.
Gene duplication involves the repetition of a gene-containing DNA region in an organism. It can result from errors in DNA replication/repair and other circumstances in the cell.
Horizontal gene transmission involves the transmission of gene-carrying DNA materials between different genomes of different species of organisms.
Transposable elements are regions of DNA that have the ability to move from one place to another within the same genome. They often create a kind of mutation and change the genetic identities of cells.
The correct option is C.
Theo is a gardener tending to his plants. He makes sure to apply an organic insecticide to all of his plants except his coffee plants. Why does Theo skip his coffee plants
Answer:
Coffee contains a natural insecticide known as xanthines.
Explanation:
Coffee contains xanthines, a purine base chemical that functions as a drug precursor in some medications and as an ingredient in the manufacture of pesticide.
Xanthines can be also be found naturally in other substances such as theobromine and theophylline.
Hence, Theo must have skipped his coffee during the application of organic insecticide to his plants due to the fact that coffee contains a substance that can naturally act as an insecticide.