Answer: Other children should be observed after the average of 6 weeks from the time of exposure to Carrie who is suspected to be infected by Pin worm.
Explanation:
Pin worm also called enterobiasis vermicularis is a parasitic nematode. The eggs are found in the specimen collected from the perianal skin and in the faeces of an infected individual. In its worldwide distribution, children are more commonly infected than adults. This is so because autoinfection by swallowing infective eggs is common in children. The eggs cause intense irritation and scratching of the infected area leads to the fingers becoming contaminated with eggs. This was observed by Carrie's teacher, as she usually scratch her bottom.
Other children should be observed after the average of 6 weeks from the time of exposure to infective eggs. This is because of the direct life cycle exhibited by the worm. Following ingestion of infective eggs, the larvae hatch in the intestine. Occasionally larvae hatch from the eggs on the perianal skin and migrate back into the intestine where they grow into mature worms. This type of infection is called RETROINFECTION. The larvae develop into fully mature worms in the large intestine. The female worms migrate to the rectum, pass out of the anus and lay their eggs on the perianal skin and perineum. The eggs are produced about 6 weeks after infection. They can remain viable on bedding, clothing, household objects, and in dust for several weeks.
Therefore from the life cycle of the worm, similar problem found in Carrie can be observed in other children after about six weeks of exposure to the infective eggs of the worm.
Where does pollination take place for an orange tree?
A. Flowers
B. Leaves
C. Roots
D. Trunk
( please help due right now )
Answer:
its A :)
Explanation:
i got the answer correct on my work
which type of bond forms between water molecules
Answer:
hydrogen bonds
Explanation:
Hydrogen bonds form between neighboring hydrogen and oxygen atoms of adjacent water molecules.Attraction between individual water molecules creates a bond known as a hydrogen bond.
Answer:
hydrogen bonds.
Explanation:
In the case of water, hydrogen bonds form between neighboring hydrogen and oxygen atoms of adjacent water molecules. The attraction between individual water molecules creates a bond known as a hydrogen bond.
Why did the accepted scientific theory of the solar system change from a geocentric model with Earth in the center to a heliocentric model with the Sun in the center?
Question 2 options:
A: Because over time the Sun's position changed
B: Because over time the Earth's position changed
C: New evidence and observations changed our understanding of the solar system
D: New planets formed in between the Sun and Earth
how would decerasing the time it takes you to run a certain distance affect your speed ?
It would mean you are moving faster than you already were.
motion
Easy if you run fast, you will get around faster, but if you crawl, then you'll be slower
Compare and contrast the outer core and the inner core. Mention 2 differences between the two cores.
Answer:
The outer core is colder than the inner core, and they are both inside the Earth. The inner core is the deepest layer of Earth's layers.
Explanation:
Which of the following is an example of genetic discrimination?
Which of the following are the main parts of the cardiovascular system?
A. thymus, lymph, lymph nodes, spleen, and tonsils
B. esophagus, stomach, small intestine, and large intestine
C. nose, pharynx, larynx, trachea, and lungs
D. heart, arteries, capillaries, and vines
Pls, help! I am currently taking a test with this question on it! I will mark brainliest if u are correct!
(D)
HEART,ARTERIES,CAPPILARIES,AND VINES
HOPE IT HELPS THANK YOU ☺
Storage polysaccharides, like starch and glycogen, often contain over a million glucose units. The energetic cost of synthesizing polysaccharides is high (about one high-energy phosphate bond per sugar residue added). Suppose that in a liver cell, the glucosyl residues in large numbers of glycogen molecules were replaced with an equivalent number of molecules of free glucose. What problems would this cause for the liver cell
Answer:
Glucose present as monomers within the cell will exert more osmotic pressure than a single glycogen molecule, resulting in endosmosis and the lysing of cells.
Also, the presence of free glucose molecules will result in increase in weight of the liver due to lack of efficient packing as in glycogen as well as the association ofnthe glucose molecules with water molecules.
Explanation:
Glycogen is a polysaccharide composed of glucose monomer units linked to Each other by α-1,4-glycosidic binds. α-1,6-branches arises at about every 10th glucose residue in the straight chain. Thus animals more glucose molecules to be stored within a much smaller space, thereby incresing the bulkiness of glycogen. Glycogen molecules are insoluble in the aqueous medium of the cell because it doesn't have enough free polar groups to participate in hydrogen bonding with water and are stored as granules and therefore do not affect the water potential or osmotic balance of the cell.
On the other hand, glucose molecules are highly soluble in water because it has many free polar -OH grours that form hydrogen bonds with water. If the glucosyl residues in large numbers of glycogen molecules were replaced with an equivalent number of molecules of free glucose, the free glucose will exert a high osmotic pressure inside the cell, causing the entry of water in the cell by endosmosis resulting in swelling and lysis ofnthe cell. Also, the space occupied by these free glucose units within the cell will be much larger than that of glycogen whichmenables efficient packing ofthe glucose molecules.
1. FIG 1 shows four organisms which belong to the class Myriapoda
(し
C
A
B
(a) Name the phylum to which the class Myriapoda belongs. State two reasons for your answer
[3]
(b) Give the names of organism A and D.A.
D..........
[2]
(c) Differentiate between A and Din terms of structure
.. [3]
2. FIG 2 shows four different organisms
Answer:
sry can't amswer
sry sry
POSSIBLE POINIS: 5
Which of the following is the best example of a population with the terrarium ecosystem?
A
the grains of sand in the bottom of the jar
B
the air and the screen at the top of the jar
С
the paper tube and the water containers
D
the three crickets in the jar
Answer:
A
Explanation:
would it be better to mine in a wilderness area than a developed area?
Answer:
Yes.
Explanation:
Mining in a area of wilderness can provide great succes as long as you know the area well and know some things about where to mine and not.
Answer: Yes, it is better to mine in a wilderness area than a developed area.
Explanation: Mining is carried out to gather raw materials that serve as the foundation for any country's or region's growth. It is more likely to occur in a wilderness area than in a developed area because mining usually has a negative impact on the environment.
The ores recovered by mining, such as oil, coal, metals, and others, cannot be obtained from any developed location, and the mining process destroys settlements in developed areas.
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how does the soil environment support the earthworm in the students hand
Based on the figure above, _________ATP molecules are formed by fermentation.
a. 2 c. 36
b. 8 d. 38
Answer:
Hey!
The answer is:-
2 ATP molecules.What cell is this ?
Answer:
Animal cell
Explanation:
Is it a animal or plant and y
Answer:
plants
Explanation:
plants have box like shape because they have cell wall
no links please on My question or I will report you
Answer:
B, or 113 Fahrenheit
Explanation:
6. Which of the following is a nonmetal?
a. Fe
b. AI
C. N
d. Si
Answer:
C nitrogen!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
where does the second step in making a protein occur?
Answer:
ribosome in the cytoplasm
Explanation:
The second step in making a protein occurs in the ribosome in the cytoplasm.
GIVING AWAY 18 POINTS PLEASE HELP ME ASAPPP!!!
Answer:a major ecosystem defined by distinctive geography and receiving uniform solar radiation and moisture
Explanation:
In which division phase is the nucleolus formed and spindle fibers broken down?
A) anaphase
B) prophase
C) metaphase
D)telophase
Answer:
Prophase
Explanation:
During prophase, the nuclear envelope and nucleolus are dissolved and the chromosomes condense. The centrioles and spindle fibers begin to form at opposite poles of the cell.
Answer:
telophase
Explanation:
Spindle fibers disperse as the chromosomes are separated and become housed within two new nuclei.
Imagine five forest communities, each with 100 individuals distributed among four different tree species (W, X, Y, and Z). Which forest community would have the most relative abundance?
50W, 25X, 15Y, 10Z
70W, 10X, 10Y, 10Z
25W, 25X, 25Y, 25Z
40W, 30X, 20Y, 10Z
Answer:
the 3rd one would be most relative
Explanation:
The forest community each with 100 individuals distributed among four different tree species (W, X, Y, and Z) would have the most relative abundant option as correct 25W, 25X, 25Y, 25Z.
Diversity is described because of the unique types/sort of lifestyles paperwork gift at the earth. Diversity plays an amazing position with the aid of using Maintain the stability of nature, law of weather, cleansing of air and water, carbon sequestration and international weather change, organic productivity, vitamins cycling, stabilize earth from erosion, and lots greater function.
Mainly variety relies upon Species richness and species evenness.Species richness is the entire quantity of various species present. Species Evenness is the abundance of every species in a community.What is species?Species are frequently described as the biggest organization of organisms wherein any people of the ideal or mating kinds can produce fertile offspring, normally through reproduction. Other approaches to defining species encompass their karyotype, DNA sequence, morphology, behavior, or ecological niche.
Thus it is clear that forest communities would have the most relative abundance are 25W, 25X, 25Y, 25Z.
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As the crocodile stays underwater, its hemoglobin delivers most of the bound As the crocodile stays underwater, its hemoglobin delivers most of the bound blank as a result of blank binding of blank to the blank conformation. as a result of As the crocodile stays underwater, its hemoglobin delivers most of the bound blank as a result of blank binding of blank to the blank conformation. binding of As the crocodile stays underwater, its hemoglobin delivers most of the bound blank as a result of blank binding of blank to the blank conformation. to the As the crocodile stays underwater, its hemoglobin delivers most of the bound blank as a result of blank binding of blank to the blank conformation. conformation.
Answer:
As the crocodiles stay underwater, its hemoglobin delivers most of the bound O2 as a result of an increased binding of HCO3 to the T conformation.
Explanation:
Crocodiles are the creatures on earth who live on land as well as in water. There are form of reptiles who belong to Phylum Chordata. They eat other animals and hunt their prey mostly hiding themselves in water. They have giant tooth which grabs their prey and kills them instantly.
which of the following is an example of an ecosystem with a high amount of diodiversity
Answer:
Example of ecosystem with high biodiversity is tropical rain forest as seen in Amazon basin of south America. Such forests are also thriving in parts of central Africa and also in islands of Indonesia. In marine environment, coral reefs are example of high biodiversity aquatic ecosystems
Explanation:
cion
Fully explain how speciation occurred on the
Galapagos Islands using 3-4 complete
sentences.
PLEASE HELPP!!
Identify all statements that accurately describe the structure of the pyruvate dehydrogenase (PDH) complex. E2 contains three domains. The complex contains multiple copies of each of three enzymes. A regulatory kinase and phosphatase are part of the mammalian PDH complex. The core of the complex is made up of several copies of E1 . Several copies each of E1 and E3 surround E2 .
Answer: The statements that correctly describe the structure of pyruvate dehydrogenase (PDH) complex are:
--> E2 contains three domains.
--> A regulatory kinase and phosphatase are part of the mammalian PDH complex.
--> Several copies each of E1 and E3 surround E2 .
Explanation:
Enzymes are proteins that speeds up a metabolic reaction by lowering the amount of energy needed to start the reaction. The type of enzyme in a cell will determine the metabolic processes that will occur in it.
Pyruvate dehydrogenase complex which is located at the mitochondria matrix, is a group of enzyme that catalyzes the breakdown of pyruvate, which is the end product of glycolysis, to form acetyl-CoA. The product formed from the reaction which is acetyl-CoA in turn enters the citric acid cycle where it is further oxidized for cellular respiration.
The structure of Pyruvate dehydrogenase complex consists of:
--> Three catalytic enzymes: These include;
• E1: This is the first enzyme of the PDH complex called pyruvate dehydrogenase. It catalyzes the removal of one carbon atom from pyruvate which leads to the production of hydrohyethyl.
• E2: This is the second enzyme of PDH complex called dihydrolipoamide S-acetyltransferase. It catalyzes the transfer of hydroxyethyl group to oxidized form of covalently bound lipoamide, and the resulting acetyl group is then transferred to free coenzyme A to form ACETYL-CoA and reduced dihydrolipoamide. Several copies each of E1 and E3 surround E2 and it consist of three DOMAINS. These domains include: N-terminal 9 kDa lipoyl domain, 4 kDa peripheral subunit-binding domain and C-terminal 28 kDa catalytic (acetyltransferase) domain.
• E3: This is the third and last enzyme of PDH complex called the flavoprotein dihydrolipoamide dehydrogenase. It re-oxidizes the lipoyl group of dihydrolipoamide-E2 to form lipoamide-E2 and NADH.
--> Two regulatory enzymes: The activities of E1 which is the rate limiting step of PDH complex regulated by phosphatases (activators) and kinases (inhibitors).
--> A binding protein: these aids in the binding of E2 to E3 enzyme in the core of PDH complex.
Please help me name each letter and match it to the definition. (Do not spam on my question either please)
Answer:
1. B. Medulla oblongata contains cardiac, respiratory, vasomotor and reflex centers.
2. A. Hypothalamus is the major regulator of ANS
3. D. Occipital lobe is the location of visual cortex.
4. F. Sensory areas are primary site responsible for perceiving cutaneous sensory sensations and proprioception.
5. E. Motor areas directs conscious motor movement
6. C. Cerebellum - coordinates movement by comparing intended movement with actual movement.
7. K. Corpus callosum allows communication between right & left cerebral hemispheres.
8. J. Frontal Lobe - Cognition, personality.
9. A. Hypothalamus - Contains hunger, thirst and thermoregulatory centers.
Which method would be best suited for neutralizing the acidic components of waste?
a. Incineration Incineration
b. Discharge to sewers, streams, and rivers Discharge to sewers, streams, and rivers
c. Chemical treatment Chemical treatment
d. Biological treatment
Answer: The method best suited for neutralising the acidic components of waste is chemical treatment. Option C.
Explanation:
Chemical wastes are seen during industrial processes. These wastes include: acids, alkalis, organic solvents, detergents, oils, dyes and heavy metals ( example; mercury, copper and lead). Normally, these wastes should be treated and made harmless before they are emptied into the rivers, lakes and seas. If not treated, the effect of these chemicals on the aquatic ecosystems is extremely harmful.
CHEMICAL TREATMENT of waste is a procedure which is carried out on dangerous acidic waste products to change its chemical properties by neutralisation with basic solutions. Neutralisation is a chemical reaction between a base and an acid. The products formed are salt and water which are less harmful to the ecosystem.
The ACIDIC components of the chemical wastes should be neutralised with an appropriate base solution before disposal to avoid it's harmful effects on the aquatic ecosystems. This is because most chemical wastes are non- biodegradable.
PLEASE ANSWER ASAP
Which of the following statements accurately describe a chromosome? Select all that apply.
a. Chromosomes contain one long DNA molecule that is tightly wound
b. Every chromosome has many genes as each gene is one segment of DNA
c. Every chromosome has one gene as an entire DNA makes up a gene
d. In any given organism, the gene(s) found on one chromosome can also be found on other chromosomes.
Answer:A
Explanation:
The statements that accurately describe a chromosome are:
a. Chromosomes contain one long DNA molecule that is tightly wound.
b. Every chromosome has many genes as each gene is one segment of DNA.
d. In any given organism, the gene(s) found on one chromosome can also be found on other chromosomes.
What is a chromosome?A chromosome can be defined as a thread-like linear strand of deoxyribonucleic acid (DNA) that is typically found in the nucleus of each cell.
The characteristics of a chromosome.In Genetics, some of the characteristics of a chromosome include the following:
Chromosomes is made up of a long deoxyribonucleic acid (DNA) molecule that is tightly wound.Every chromosome consist of many genes as each gene is a single segment of deoxyribonucleic acid (DNA).In any given organism, the gene(s) that is found on a chromosome can also be found on other chromosomes.Read more on chromosome here: https://brainly.com/question/1262952
A directional flow of electric charge
Answer:
The direction of an electric current is by convention the direction in which a positive charge would move. Thus, the current in the external circuit is directed away from the positive terminal and toward the negative terminal of the battery. Electrons would actually move through the wires in the opposite direction.
Conventionally, a positive charge would go in the same direction as an electric current. As a result, the battery's positive terminal receives less current in the external circuit than its negative counterpart. Actually, electrons would go in the reverse direction across the cables.
What is electric current ?A stream of charged particles, such as electrons or ions, traveling through an electrical conductor or a vacuum is known as an electric current. The net rate of electric charge flowing through a surface or into a control volume is how it is calculated.
The cell phone, trains, ships, refrigerator, and the motors in appliances like food processors all run on electricity. To be useful, electric energy must be converted into other forms of energy like heat, light, or mechanical.
Conventionally, a positive charge would go in the same direction as an electric current. As a result, the battery's positive terminal receives less current in the external circuit than its negative counterpart.
Thus, a positive charge would go in the same direction as an electric current.
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Which of the following is a difference between arteries and viens?
arteries carry blood and veins carry only plasma
arteries do not have valves and veins do have valves
arteries are thin and veins are thick
arteries carry blood back to the heart and veins carry blood to the heart
The correct option is :
=》arteries do not have valves and veins do have valves.
Arteries don't have valves because back flow of blood isn't possible due to high pressure, but blood in veins doesn't have high pressure just like arteries, so to stop backflow of blood, veins have valves.