Need help 15 points

Answer:

A

Explanation:

Seeds and rhizome spread are both methods used by water lilies to reproduce. Aquatic biologists advise using physical removal before to, or in conjunction with, treatment, as well as preventative management strategies.

Long stalks joined to subterranean stems carry the spectacular, fragrant, solitary blooms at or above the water's surface. The multiple petals of each cup-shaped flower are arranged in a spiral pattern. The majority of species' blooms include several stamens, which are the male reproductive organs. After blooming for about three days, water lily blossoms start to degrade and fall to the ground. Upon maturing, the unopened bloom floats to the surface where the pod splits apart, releasing the seeds onto the water's surface if they were fertilised.

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The remaining genotypes can be - ZZ, ZW, ZZ.

The mechanism of sex determination in birds is different from human. In birds, the sex chromosomes are designated as Z and W.

Male is the homomorphic sex (ZZ) and female is the heteromorphic sex (ZW).

Pair :          Male bird  (ZZ)  ×  Female bird (ZW)

Gametes :  Z, Z (from male) Z, W (from female)

In birds, internal fertilisation takes place. Eggs develop inside the female bird. So the genotypes in the eggs can be:

ZZ, ZW, ZZ, ZW    (i,e. there is equal chance for male and female).

Lets assume that the one fourth eggs which don't hatch will be of genotype ZW (female).

Then then the remaining genotypes can be - ZZ, ZW, ZZ  (i.e. two thirds of them are male with ZZ genotype).

Bird sex is established by the inheritance of sex chromosomes during fertilization. The embryo with two Z chromosomes (ZZ) grows into a male, whereas the embryo with two Z and W chromosomes (ZW) develops into a girl.

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Depolarization is the first phase in the final phase, the neuron's membrane potential drops below the resting membrane potential resulting in a large influx of sodium ions.

Depolarization, overshoot, and repolarization are the three phases of an action potential. There are two additional membrane potential states connected to the activity. A sudden increase in membrane potential triggers the opening of sodium channels in the cellular membrane, which leads to a significant increase in the influx of sodium ions and causes depolarization.

Membrane repolarization happens as a consequence of the quick inactivation of sodium channels and the significant efflux of potassium ions that happens as a consequence of activated potassium channels.

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Answer:

When water freezes that's a physical change, it physically changes but it is chemicaly the same so it counts as a physical change. Now when an electrical current is passed through water it splits the water into hydrogen and oxygen also know as H2 and O2. this example is broken down into two elements cause it to be a chemical change.

Explanation:

A would be your best choice

The prostaglandin synthesis enzyme that yields protective prostaglandins is Cyclooxygenase-2 (COX-2).

COX-2 is responsible for producing prostaglandins involved in inflammation and pain response, as well as in maintaining normal physiological processes such as regulation of blood flow and protection of the gastrointestinal lining.

Cyclooxygenase-1 (COX-1) is primarily involved in the production of prostaglandins that play a role in maintaining normal physiological functions.

COX-2 produces protective prostaglandins, while COX-1 produces prostaglandins that are involved in maintaining normal physiological functions.

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Cephalopods have the most complicated nervous system found in the invertebrates.

Octopi, squids, and cuttlefish are considered the most intelligent of all invertebrates. They are capable of some forms of learning, and some species exhibit elaborate social interactions. These only marine creatures have a large head, bilateral body symmetry, and a set of arms or tentacles (muscle hydrostats) that are modified versions of the earliest molluscan foot.

During the Ordovician epoch, primitive nautiloids—cephalopods—became the dominating animal group. The Coleoidea subclass, which comprises octopuses, squid, and cuttlefish, and the Nautiloidea subclass, which includes Nautilus and Allonautilus, are the only two currently surviving subclasses within the class. In contrast to the Nautiloidea, which still possesses the external shell, the Coleoidea lacks or has internalised the molluscan shell. Cephalopods are a group of about 800 extant species. Ammonites, or Ammonoidea, and belemnoidea, are two significant extinct taxa (belemnites). The largest living invertebrate, the 14 m (45.1 ft) enormous squid, is an extant cephalopod. Its size ranges from the 10 mm (0.3 in) Idiosepius thailandicus.

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The extent of bantam plants that would be normal in the cutting edge subsequent to selfing the diminutive person F2 plants is 1/4.

In the F2 age, the proportion of a smaller person to tall plants was 3:1, intending that for every four plants, three were mid and one was tall.

In the event that the more diminutive person F2 plants were self-pollinated, every one of the succeeding plants will have a 100 percent chance of acquiring the bantam allele from the selfed F2 plant, bringing about a 100 percent extent of bantam plants in the future.

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The identification of this bacteria would be  : Aeromonas spp which is has profile  a gram negative bacteria, oxidase negative, lactose negative, urease positive, and motile.

Urinary tract infections commonly (80-85 % cases) caused by E. Coli bacteria which is has profil as gram negative but lactose positive. Profile bacteria matched the findings is Aeromonas spp. This bacteria, Aeromonas spp, commonly caused gastrointestinal infection and diarrhea. In this case, probably the child has gastrointestinal infection, and then urinary tract infection as a secondary infection. That’s why the child has recurrent urinary tract infections. The doctor must treat primary infection in order to manage the secondary infection.  

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All of the following are abiotic factors within an ecosystem except Energy. Energy is not an abiotic factor within an ecosystem.

Abiotic factors are non-living components within an ecosystem that play a crucial role in determining the survival and growth of living organisms. These factors include things like temperature, light, water, soil, air, and nutrients. Fire is also considered an abiotic factor as it can affect the physical and chemical properties of the environment, leading to changes in the ecosystem.

However, energy is not considered an abiotic factor as it is not a physical component of the environment. Energy is a fundamental component of life and is essential for the survival and growth of living organisms, but it is not considered a part of the abiotic factors within an ecosystem.

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Complete Question:

all of the following are abiotic factors within an ecosystem except _____.

a) energy

b) nutrients

c) fire

d) all of the above are abiotic factors.

Answer: The answer is B.

Explanation:because  growth and passing on of genetic information is super helpful for the embryo.

D.

Mitosis is responsible for replacing cells, the growth of our bodies and carries the genetic information of the parent.

The brain is responsible for regulating skeletal muscle coordination on the graphic is 4.

The hindbrаin sits underneаth the bаck end of the cerebrum. It consists of the cerebellum, pons, аnd medullа. The cerebellum аlso cаlled the "little brаin" becаuse it looks like а smаll version of the cerebrum.

The cerebellum is involved primаrily in regulаtion of skeletаl muscle coordinаtion аnd contrаction аs well аs mаintenаnce of equilibrium. It coordinаtes muscle contrаctions, so movement is smooth аnd purposeful. The frontаl lobe mаnаges sociаl judgment. The pаrietаl lobe directs proprioception аnd body аwаreness. The midbrаin regulаtes pupil size аnd reflexes.

Your question is incomplete, but most probably your graphic and the options were

A. 1

B. 2

C. 3

D. 4

Thus, the correct answer is D.

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The statement which best describes the location of the beta phosphate of ATP following the phosphorylation reaction is option C. It becomes a free phosphate ion.

Being a complicated organism, the body needs energy to continue operating properly. At the cellular level, energy is used and stored as adenosine triphosphate (ATP). Nucleoside triphosphate make up the structure of ATP.

By adding a third phosphate group to adenosine diphosphate (ADP) during aerobic respiration, a process known as oxidative phosphorylation, ATP is produced in the mitochondrion. ATP is hydrolyzed into the ADP or AMP and releases free inorganic phosphate groups during metabolic activities.

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The lymphatic system is an interconnected system of tissues, blood arteries, and organs that transports lymph, a colorless, watery fluid, back into your circulatory system. At the intersection of the left internal jugular and subclavian veins, the lymphatic fluid finally empties.

There are microscopic tubes called lymph capillaries, also known as lymphatic capillaries, all over your body. A capillary is a small tube with a hair-thin inner diameter. Similar to blood capillaries, lymphatic capillaries differ in that they are larger in diameter and have closed ends. Lymph capillaries function similarly to blood capillaries, however they do not let fluid to leave the cell via the cell walls. It is only capable of progress. Your lymphatic system includes lymphatic capillaries. Nearly every organ in your body has lymphatic tissue, organs, and veins that collect surplus fluid. Lymph capillaries assist in maintaining your body's overall fluid balance. Interstitial fluid, which is fluid that fills the crevices between cells, seeps into your tissues from blood capillaries all throughout your body.

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The complete question is:

Describe the system of lymph vessels. Explain how lymph is kept moving in these vessels. Into which veins is lymph emptied?

The similarity between bacteria and virus is that both can cause diseases and are spread through air droplets, contaminated surfaces and may cause general symptoms like sneezing, fever, etc. The difference between them is that bacteria is living outside any living body but a virus is not.

Bacteria are the microorganisms that are single-cellular and can be present in any environment. They may be both harmful as well as useful. The bacteria exist is a variety of shapes and sizes. They are the first life forms of Earth.

Viruses are the acellular structures that are living only inside a living body. They do not follow the cell theory. They can divide and multiply their numbers by using the mechanism of the host body they are present in.

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When discussing comparative morphology, scientists compare between modern organisms and their extinct relatives is Anatomy.

Comparative morphology is the study of the patterns of the location of structures within an organism’s body plan, which serves as the foundation for taxonomy classification. The study of the link between the structure and function of morphological traits is known as functional morphology. Fossils. Fossils provide evidence of the presence of now-extinct ancient species that are connected to modern ones. Simple observation. Small-scale evolution can be observed directly in species with brief lifecycles (e.g., pesticide-resistant insects).

Simply said, morphological categorization employs physical traits (or characters) that are comparable to determine species borders and connections between species. Characters might be qualitative (e.g., presence or absence) or quantitative in nature (e.g., size or number).

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When enough magma builds up in magma chamber, it forces its way up to the surface and then erupts, causing volcanic eruptions.

Volcanic eruption is when the lava and gas are released from volcano and sometimes explosively. Most dangerous type of eruption is called 'glowing avalanche' which happens when freshly erupted magma flows down the sides of volcano. They travel quickly and reach temperatures of up to 1,200 degrees Fahrenheit.

In the ocean, volcanoes erupt along the cracks that are opened in the ocean floor by spreading of the two plates called as the mid-ocean ridge.

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Answer: 2:1

Explanation:

To analyze the source of the genetic material in an angiosperm endosperm the ratio would be 2:1

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c. In eukaryotic cells, internal membranes standardize the internal environment of all cellular organelles. The lipid bilayers that make up the membranes that surround eukaryotic organelles are comparable to (but not identical to) the cell's outer membrane.

The combined area of a cell's internal membranes is significantly greater than that of its plasma membrane. Organelles, sometimes known as "small organs," are a variety of membrane-bound structures that carry out specific tasks for eukaryote cells within their cytoplasm. The endoplasmic reticulum is one type of organelle (ER). A network of membranes called the ER covers the entire cytoplasm of eukaryotic cells. Eukaryotic cells, like prokaryotes, have a plasma membrane that is composed of a phospholipid bilayer with embedded proteins and serves to separate the inside of the cell from the external environment.

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Which of the following statements about internal membranes in eukaryotic cells is false?

a. In eukaryotic cells, internal membranes greatly increase a cell's total membrane area.

b. In eukaryotic cells, internal membranes form membranous compartments called organelles.

c. In eukaryotic cells, internal membranes standardize the internal environment of all cellular organelles.

d. In eukaryotic cells, internal membranes provide an additional area for many metabolic processes to occur.

By applying the z-score formula, it can be concluded that the number of specimens predicted to fail at less than 115k cycles is 27 specimens.

Mean is obtained from the sum of all the values from each data, then divided by the number of data.

Mean = ∑fx/∑f

Variance is a measure of how far a set of numbers is spread out.

Variance = ∑fx²/∑f - (Mean)²

Standard deviation is the square root value of the variance and indicates the standard deviation of the data from the mean.

σ = √var

Z Score is a measure of how far data is from its means in standard deviation units.

z score = (X - Mean) / σ

Here is the data about the measured number of cycles to failure (L in k cycles) with its frequency (f):

L: 60  70  80  90  100  110  120  130  140  150  160  170  180  190  200  210

f:   2     1    3     5     8     12     6     10     8     5     2      3      2      1       0      1

To determine the mean, we can input the data into the mean formula:

Mean = ∑fx/∑f

         = ((2*60) + (1*70) + (3*80) + (5*90) + (8*100) + (12*110) + (6*120) +

             (10*130) + (8*140) + (5*150) + (2*160) + (3*170) + (2*180) + (1*190) +

             (0*200) + (1*210)) / 69

          = (120 + 70 + 240 + 450 + 800 + 1320 + 720 + 1300 + 1120 + 750 +

             320 + 510 + 360 + 190 + 0 + 210) / 69

          = 8480 / 69

          = 122.9

Since the standard deviation is the square root value of the variance, then have to calculate the variance first :

var = ∑fx²/∑f - (Mean)²

     = ((2*60²) + (1*70²) + (3*80²) + (5*90²) + (8*100²) + (12*110²) + (6*120²) +

        (10*130²) + (8*140²) + (5*150²) + (2*160²) + (3*170²) + (2*180²) + (1*190²)

         + (0*200²) + (1*210²)) / 69 - (122.9)²

      = (1104600 / 69) - 15,104.41

      = 16,008.696 - 15,104.41

      = 904.286

So the standard deviation is:

σ = √var

  = √904.286

  = 30.07

The z score of a normal distribution is given as:

z score = (X - Mean) / σ

            = (115 - 122.9) / 30.07

            = -0.263

Using the normal distribution probability table, we can compute the value of P(x< -0.263) = 0.39628

Thus, the number of specimens predicted to fail at less than 115k cycles is 0.39628 * 69 = 27.34332 ≈ 27 specimens.

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D). Adenosine triphosphate (ATP), carbon dioxide.

correct option is d

Adenosine triphosphate (ATP), carbon dioxide are the products of both aerobic and anaerobic cell respiration in some organisms.

During aerobic respiration, glucose is oxidized with the help of oxygen, producing ATP and carbon dioxide as the end products.

In contrast, anaerobic respiration takes place in the absence of oxygen, and the end products are ATP and either lactic acid (lactate) or ethanol and carbon dioxide, depending on the organism.

The type of respiration that takes place in a cell depends on the availability of oxygen, the metabolic needs of the cell, and the physiological adaptations of the organism.

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Answer: cell membrane, ribosomes, cytoplasm, and DNA.

Explanation: That's because all cells are surrounded by a structure called the cell membrane — which, much like the walls of a house, serves as a clear boundary between the cell's internal and external environments. The cell membrane is sometimes also referred to as the plasma membrane.

The function of heart valves is to prevent the back flow of the blood and it is important because it ensure the flow of blood in correct direction.

Heart  valve are structures in the heart that regulate the inflow of blood throughout the body. They open and close in sequence to  insure that blood overflows in the correct direction and at the right pressure. This is important because it keeps the blood flowing in the right direction and ensures that the heart is working efficiently. Without the  valve,

The heart would be  unfit to pump blood  duly and would not be  suitable to supply oxygen to the body’s cells. The valve also help to keep the pressure within the heart at a safe  position,  precluding it from  getting too high or too low. Without the  valve the heart would be  unfit to  serve  duly and would be  unfit to supply the body with the oxygen and nutrients it needs.

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Answer: Protists

Explanation:

Protists

It is True that external fixation involves the application of pins through the tissue and bone to hold an external appliance in place. Option A is the correct answer.

This refers to a process by which pins or wires are inserted into bone percutaneously and held together through an external scaffold. Broken bones can be fixed in surgery with metal pins, screws, nails, rods, or plates.

These metal pieces hold the bones in place while they heal. Sometimes, the metal pins need to stick out of your skin to hold the broken bone in place. The metal and the skin around the pin must stay clean to avoid infection.

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The thoracic cavity, situated above the diaphragm, is home to the heart and lungs, while the abdominal pelvic cavity below the diaphragm contains the digestive and reproductive organs.

One similarity between the thoracic and abdominal pelvic cavities is that they both contain organs that are essential for the body to function properly. The organs in these cavities are responsible for breathing, digesting food, and eliminating waste.

The thoracic cavity and the abdominal pelvic cavity are two distinct regions within the human body that differ in their respective locations. The thoracic cavity is located in the chest, while the abdominal pelvic cavity is positioned in the abdomen. This contrast can be useful in diagnosing medical issues, as chest pain will likely originate from the thoracic cavity while pain in the abdomen could indicate an issue in the abdominal pelvic cavity.

The thoracic cavity and abdominal pelvic cavity have different functions, which can be seen in the organs located within them. The thoracic cavity contains organs primarily related to breathing, such as the heart, lungs, and trachea, while the abdominal pelvic cavity contains organs mostly related to digestion, such as the stomach, small and large intestines, and bladder. This distinction can be useful for medical professionals when diagnosing and treating certain ailments.

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Classes of neurons that have a low probability of being able to repair themselves after damage in an adult human are interneurons in the spinal cord and interneurons in the brain.

Interneurons are nerve cells that function to connect sensory neurons and motor neurons. Interneurons have short dendrites and long axons.

In cases of damage to the brain and spinal cord, many axons are cut. It is difficult for axons to grow back. This is why paralysis and loss of sensation are permanent in spinal cord injuries.    

There are two reasons why axonal regeneration in the CNS fails. First, because the environment surrounding the CNS lesion inhibits axon outgrowth; and second because most CNS axons elicit only a weak regenerative response after being cut.

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All of the following are strategies associated with conservation biology:

Conservation biology is the scientific study of the preservation of biological diversity and the management of threatened species and ecosystems. It encompasses various approaches and techniques aimed at conserving biodiversity and preserving the health of the planet's ecosystems. This field of study considers both the biological and ecological factors that threaten species and ecosystems, as well as the social and economic factors that drive conservation efforts.

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DDT was first used as an insecticide in the 1940s and quickly became widespread in many parts of the world, including India. In response to the widespread use of DDT, populations of mosquitoes in India began to evolve resistance to the insecticide.

This occurred due to the process of natural selection, where the mosquitoes with genes for resistance to DDT were more likely to survive and reproduce than the mosquitoes without these genes. Over time, this resulted in an increase in the frequency of DDT-resistant mosquitoes in India.

Once DDT resistance had evolved in mosquitoes in India, it could spread to other parts of the world through migration. Mosquitoes are capable of long-distance migration and can be transported by wind, as well as through human activities such as air travel, shipping, and other forms of transportation. If DDT-resistant mosquitoes from India migrated to other parts of the world, they would introduce the resistance genes into new populations, causing the frequency of DDT resistance to increase in these areas as well.

In conclusion, the frequency of DDT resistance in mosquitoes increased in India due to natural selection and then spread to other parts of the world through migration, leading to the widespread occurrence of DDT resistance in mosquitoes globally.

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