Answer:
After it is released from the snailExcavata SporangiumExplanation:
Schistosoma life cycle:
1. Human excretes schistosomes eggs through feces and/or urine. These eggs eventually reach the water.
2. Once in the water, schistosomes eggs hatch and release immature larvae named miracides.
3. Miracides swim and penetrate a freshwater snail, which is an intermediary host.
4–5. Once inside the snail, miracides turn into sporocites and then into cercariae. Cercariae characterize by having a bifurcated tail. Snails release the cercariae in water, and they swim until they get in touch with a mammal. Once they reach the mammal, they penetrate the skin and get into the body. This is the stage in which the parasite becomes infectious to humans. Just a few cercariae are enough to infect a person.
6. When cercariae penetrate their host body, they lose their tails and turn into schistosomules. These new forms travel to the liver, where they end their maturation process.
7. Males and females mate in the liver and migrate to veins of the intestine or bladder. Once there, the females lay the eggs, which are then excreted by the host. And the cycle begins again.
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Excavata are asymmetrical protists. The group receives its name because of the appearance of the feeding groove. Excavata is composed of many protists. One of them is Parabasalid.
Parabasalids are parasitic protists, and one of them is Trichomonas vaginalis, which is transmitted sexually.
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Sporangium. This is the reproductive structure of the mushroom and the one that is usually eaten. Spores develop inside the sporangium. Its surface is covered by a protector cuticle. It can be eaten when it is closed or when it is already open. However, when open is tastier.
A suspension of yeast cells is being grown under anaerobic conditions such that glucose is metabolized to ethanol and carbon dioxide. An inhibitor of alcohol dehydrogenase is added to the suspension, the cells rapidly die. Explain.
Answer:
The correct answer is - NAD needed to keep glycolysis going is not being recycled so the entire process is shut down and no ATP is produced
Explanation:
Alcohol dehydrogenase plays role in metabolizing the bulk of ethanol consumed as part of the diet and their activities contribute to the rate of ethanol elimination from the body.
Inhibitor of this zinc enzyme prevents it to perform its function which results in NADH generated during anaerobic conditions glycolysis cannot be recycled back to NAD+, So the ATP production pf anaerobic condition through glycolysis cannot be maintained.
Intercostal nerves Group of answer choices are also known as cervical nerves. do not enter into a plexus and directly connect to the structures they supply. are found in the C6-T4 area of the vertebral column. extend through the sacrum. do not exist in humans.
Answer:
The correct answer is: do not enter into a plexus and directly connect to the structures they supply.
Explanation:
The anterior rami of the thoracic spinal nerves from T1 to T11 give birth to the intercostal nerves, which are part of the somatic nervous system.
The intercostal nerves supply the thoracic pleura and abdominal peritoneum, and they vary from the anterior rami of the other spinal nerves in that they each take their own path without forming a plexus, directly connecting to the structures they supply.
The intercostal nerves are derived from the somatic nervous system, unlike the autonomic nervous system nerves that innervate the visceral pleura of the thoracic cavity. They can govern muscle contractions and give sensory information about the skin and parietal pleura as a result of this. This explains why damage to the thoracic cavity's interior wall can be felt as a severe discomfort in the damaged area. Damage to the visceral pleura causes a pain that is not localized.
An enzyme is a _____ molecule.
a. polysaccharide
b. nucleic acid
c. carbohydrate
d. protein
difference between chromosomes and DNA
Answer:
The DNA in a human body is organized into many stretches of genes. Proteins attach themselves to these stretches and coil them so that they form chromosomes. These stretches are very important in the formation of an organism. Do you know why?
PLEASE HELP STUCK ON TEST QUESTION !!!
The main lesson farmers learned from the Dust Bowl in the 1930s was to _?_.
A) plant one crop repeatedly in order to make a profit
B) use the topsoil until it is no longer productive, then move to a new area
C) conserve and protect the topsoil so it will be productive for years
Answer:
A) I think because crops were bio-engineeered, through hybridization and cross-breeding for development of crops but cross-breeding is harmful it is proved
56:25
If blood is in short supply, which blood type would be the most beneficial to have on hand if someone needed a blood transfusion?
O+
O–
AB+
AB–
Long strands of genetic information are stored in ________. A. Enzymes B. Adenine C. Chromosomes D. Mutations
The genetic information is the encoded proteins passed through hereditary. The genetic information is stored in the chromosomes of the cel. Thus, option C is correct.
What are chromosomes?Chromosomes are the hereditary unit of an organism that passes from the parent cell through cell division and reproduction to the daughter cells.
The chromosomes comprise chromatin that is made of the proteins and DNA molecules wrapped around the histones to form a dense and compact structure.
They look like long threads that are present inside the cell's nucleus and code for specific information that gives the genotype and phenotype of an organism. It gets copied during the cell cycle.
Therefore, option C. chromosomes store the genetic information.
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The correct air track for a human respiratory system is
A.
-
B.
trachea - bronchus - bronchiole alveoli
trachea - bronchiole - bronchus alveoli
bronchus -
trachea
alveoli
bronchiole
trachea alveoli bronchus
bronchiole
С.
u
D.
Answer: Air enters through the nose (and sometimes the mouth), moves through the nasal cavity, the pharynx, the larynx, enters the trachea, moves through the bronchi and bronchioles till the alveoli.
Explanation:The pathway of air in the respiratory system starts with the external organs of the nose and mouth.
Nose: Air is inhaled through the nostrils (and sometimes through the mouth) where it is filtered by the hairs and cilia to remove dust particles and moistened. The nasal cavity also moderates the temperature of the inhaled air.
Pharynx: This is a common passage for food, water, and air. It leads from both the nose and the mouth and leads to both the trachea (windpipe) and the oesophagus (foodpipe).
Larynx: This is the voice box situated just over the trachea and has a flap called the epiglottis which closes during swallowing to prevent food from entering the trachea and opens during breathing.
Trachea: Air now enters the windpipe which is situated behind the sternum (breastbone) and between the two lungs.
Bronchus: From the trachea, two bronchi (one bronchus for each lung) enter the lungs and divide and subdivide into secondary and tertiary bronchi, getting narrower as they proceed into the lung.
Bronchioles: The tertiary bronchi branch into fine tubules called bronchioles, the last passageways for air.
Alveoli:. Air ends its pathway in the alveoli (sing. alveolus) which are tiny sacs with very fine singe-celled walls. These alveoli are surrounded by capillaries that connect the pulmonary arteries and veins and that enable transfer of oxygen and carbon dioxide.
1.If you could only eat one meal for the rest of your life, what would it be?
2. How are you finding the topic DNA and cell division
Uplift and formation of a mountain range divides a freshwater snail species into two isolated populations. Erosion eventually lowers the mountain range and brings the two populations together again, but when they mate, the resulting hybrids have sterile young. This is and example of which type of reproductive barrier
Answer:
Post reproductive isolation → Hybrid sterility
Explanation:
The biological concept of species states that individuals of a species can not mate and reproduce with individuals of another species. But if they get to reproduce, the progeny will not be viable or fertile. There will not be any reproductive success.
There are different reproductive isolation mechanisms, which are barriers that inhibit or interrupt the genetic flow between different species.
Reproductive barriers are isolation mechanisms that prevent mating between two or more species. The prezygotic mechanism avoids fertilization between individuals of different species, while the postzygotic mechanism impedes the zygote to develop and reach the adult stage.
Postzygotic mechanisms or barriers include
Hybrid inviability, Hybrid sterility, Hybrid reduced viability or fertility, Cytoplasmic interactions.In the exposed example, sympatric speciation occurs. It seems that the mountains separating the snails´ populations made a place for speciation and the development of postzygotic barriers, specifically hybrid sterility. After the erosion process, both populations got to meet again. Snails from one population get to mate and produce offspring with the snails of the other population, but their progeny is sterile.
what is diffusion and why is imo
What else is produced during the replacement reaction of silver nitrate and potassium sulfate?
2AgNO3 + K2SO4 Ag2SO4 + ________
KNO3
2KNO3
K2
2AgNO3
Answer:
2KNO3
Explanation:
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From the equation of reaction, the other product during the replacement reaction of silver nitrate and potassium sulfate is potassium nitrate, KNO₃.
What is produced in the replacement reaction silver nitrate and potassium sulfate?
In the replacement reaction of silver nitrate and potassium sulfate, the products are silver sulfate and potassium nitrate.
Silver sulfate is insoluble and comes out of solution as a precipitate.
The equation of the reaction is given below:
2 AgNO₃ + K₂SO₄ ----> Ag₂SO₄ + 2 KNO₃Therefore, the other product during the replacement reaction of silver nitrate and potassium sulfate is potassium nitrate, KNO₃.
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Can somebody help me
Answer:
sure what's your problem.
Explanation:
Tell me.
Which type of energy refers to the sum of potential and kinetic energies in the particles of a substance?
A. motion
B. stored
C. internal
D. heat
Answer:
A
Explanation:
Mechanical energy of a moving object the sum of its kinetic and potential energy
Why does population growth slow as size increases in the logistic model?
A : due to density-dependent factors
B : due to density-independent factors
C : due to a decrease in death rate
D : due to an increase in birth rate
Answer:
due to densinty dependent factors
Explanation:
because it determining energy requirement in human being
Population growth slow as size increases in the logistic model A : due to density-dependent factors is correct option.
In the logistic model of population growth, the slowdown in population growth as the population size increases is primarily attributed to density-dependent factors. Density-dependent factors are those that have a stronger impact on a population when its density (number of individuals per unit area) is higher. As a population grows and becomes more dense, competition for resources (such as food, space, and mates) intensifies, and factors like disease transmission and predation become more significant.
These density-dependent factors can lead to a decrease in birth rates, an increase in death rates, or both, which ultimately results in the population growth rate slowing down and eventually stabilizing at its carrying capacity (the maximum sustainable population size for a given environment). This pattern is characteristic of the logistic growth model, which describes a more realistic and sustainable form of population growth compared to the exponential growth model.
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part of the eye that gives people different eye colors
The project that you are working on was initiated in response to the growing threat of antibiotic resistance in both hospital and community settings. Even in the early discovery and development phase, it is important to think ahead to try to minimize the likelihood that bacteria will be able to evolve resistance to your new drug. Understanding how resistance emerges is an essential part of this process. What is true regarding the evolution of antibiotic resistance in bacteria?
Answer:
Decrease the effectiveness of this process.
Explanation:
Resistance emerges is an essential part of this process because this resistance causes decrease in the effectiveness of the drugs. If this resistance is not a part of this process, the microbes get resistance from the drugs which leads to lower the effectiveness of antimicrobial disease or infection so that's why resistance is considered as the essential part of this process of project.
For what purpose is the mineral corundum commonly used?
O A. To make pencils
O B. To make false teeth
O C. To make emery boards
O D. To make drinking glasses
Answer:
D I guess because grinding optical glass and for polishing metals and has also been made into sandpapers and grinding wheels.
Answer:
It's to make emery boards
Explanation:
I just took the test
What are the student’s observations and inferences before he starts his investigation?
Answer:
Hypothesis. A Hypothesis is an estimation of what might happen and the student's observation before moving on to investigate.
an organism that uses oxygen to break down food to obtain energy
Part 1 of 1 -
Question 9 of 10
10 Points
When DNA is copied, sometimes there are mistakes. Approximately how often does this
happen?
O A. There aren't any mistakes.
OB. 1 in a billion bases.
OC. 1 in a million bases.
OD. 1 in a trillion bases.
Reset Selection
Answer:
D. 1 in a trillion bases
Explanation:
A mutagen agent can change the genetic information of organisms increasing mutations over the natural level. Mutagens cause changes in the bases, and pairing bases, that compose DNI strands.
A mistake in the process of DNI copy during cell division might cause genetic changes in daughter cells. Defects DNI replication might be inherited if it occurs in germinal cells. But it can also cause many significant epigenetic changes.
Many of these changes can be detected on time by enzymes such as DNI polymerase. This enzyme can correct these mistakes or at least some of them, moving from 3´to 5´direction, and eliminating the mistakes.
The highly effective replication system, together with the action of enzymes, makes it rare to occur a mistake in DNI replication. Generally speaking, the mistaken rates in DNI replication are very low, meaning that only one in a trillion times occurs a mistaken DNI copy.
