all of the following are characteristic of the cnidarians except ___________________.ADiploblastic
B
Body cavity is absent
C
Bilaterally symmetric
D
Presence of cnidoblast

This is most likely because the tobacco seeds required light in order to germinate, and the opaque cover prevented the seeds in Dish A from receiving any light.

The dishes were placed equidistant from a light source set to a cycle of 14 hours of light and 10 hours of dark. All other conditions were the same for both dishes. The dishes were examined after 7 days, and by the time the cover was removed on day 7, the seeds in Dish A were already too far behind in their development, as the seeds in Dish B had been receiving light for 7 days and had already begun to germinate.

By day 14, the seeds in Dish A had not had enough time to catch up to the seeds in Dish B, and so none of the yellow-leaved seedlings survived in either dish.

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The mechanism of cohabitation shapes the link between species richness and ecosystem variability. theory linking environmental diversity to species richness.

The number of members of each species in a region is known as its species abundance. Additionally, it has a numerical quality. The phrase "species diversity" refers to the variety of species present in a region (also known as "species richness"), as well as their abundance and distribution within that ecosystem. It serves as a gauge of the ecosystem's diversity.

The association between species richness and ecosystem functioning may thus generally be stronger at the landscape size than at lower ones, according to our findings.

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Answer:

b. False

Explanation:

Hypothalamus play the important role in the release of many hormones. For example when the level of growth hormone is low, the hypothalamus releases growth hormone releasing factor which stimulate the pituitary gland to release growth hormone.

Answer:

Explanation:

The raw materials for a model summarizing cellular respiration is ; ( B ) Glucose and oxygen.

The statement that best describes an event in the model which contributes to ATP production is ; ( D ) carbon atoms in the glucose are transformed into energy in the form of ATP

Cellular respiration is a set of metabolic reactions whereby the cells in an organisms take in oxygen and converts glucose found in the cells into ATP ( emergy ) needed by the organisms. while carbon dioxide and water is given out as a by product in the process.  while

During ATP production the carbon atoms in the glucose are transformed into energy in the form of ATP

Hence we can conclude that The answer to your questions are B and D

No, the administration of a drug formulation with clavulanic acid as its only active ingredient would not combat bacterial infection.

Clavulanic acid is a beta lactum drug that acts as an inhibitor. It has a fairly weak antibiotic property. That means a drug that only has clavulanic acid as its only active ingredient won't be able to combat any bacterial infection.

Clavulanic acid can be combined with other drugs, such as amoxicillin. When combined with amoxicillin, it can combat bacterial infection pretty effectively. Amoxicillin degrades the bacteria by inhibiting cell wall synthesis and weakening them, while clavulanic acid prevents the inactivation of amoxicillin by binding to the active site of the enzyme that is related to beta-lactamases. This drug combination is used to treat sinus, UTI, and many other bacterial infections.

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Plant grows toward the direction of sunlight to stimulus is the plant responding.

Two different kinds of induced curvature motions are visible in plants. These movements are specifically tropic and nastic. Tropic movements are directional growth patterns in which the stimulus's direction determines the growth's direction. Examples include gravitropism, gravitropism, chemotropism, phototropism, and others. Positive tropism, or the movement of growing plants toward a stimulus, is distinguished from negative tropism, or the movement of growing plants or plant components away from a stimulus. Instead of downward and upward tropism, positive or negative tropism is the definition of a tropic movement.

Light, gravity, water, sun movement, and touch are a few common stimuli for plants. The stimulus is linked to the naming of the tropism. For instance, hydrotropism refers to the root movement of plants toward water.

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Heart rate and stroke volume decrease under decreased parasympathetic stimulation is True.

When the parasympathetic nervous system is stimulated, the heart rate decreases and the stroke volume increases. This is because the parasympathetic nervous system stimulates the release of the neurotransmitter acetylcholine, which binds to muscarinic receptors on the sinoatrial node of the heart, causing a decrease in the heart rate and an increase in the stroke volume. The decrease in heart rate is due to a decrease in the release of excitatory neurotransmitters, such as epinephrine and norepinephrine, which stimulate the heart rate. The increase in stroke volume is due to the increased relaxation of the atrioventricular valves, which allow more blood to be pumped out of the heart with each beat.

Parasympathetic stimulation is responsible for slowing the heart rate and increasing the stroke volume of the heart. When parasympathetic stimulation is decreased, both the heart rate and the stroke volume decrease. This can be seen in cases of increased sympathetic stimulation, such as during exercise or periods of stress. During these times, the heart rate increases and the stroke volume decreases as the parasympathetic system is inhibited.

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Urine is carried by the urethra.

Urine travels from the kidneys to the bladder through the ureters. Prior to passing through the urethra and leaving the body, the urine is stored in the bladder. the pipe connecting the kidney to the bladder to transport pee.

Urethra. Urine can travel through this tube and leave the body. Urine leaks from the bladder as a result of the brain's tightening signal to the bladder muscles. In order to allow urine to pass from the bladder through the urethra, the brain sends a signal to the sphincter muscles to loosen up.

The urinary bladder serves as a temporary reservoir for the pee and is reached by the ureters, which transport urine from the kidneys. The urinary bladder's urine is transported to the outside by the urethra, a tubular organ.

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sub-Saharan Africans human population exhibits the greatest genetic diversity today.

sub-Saharan Africans

Geographically speaking, Sub-Saharan Africa refers to the parts of the African continent south of the Sahara. West Africa, East Africa, Central Africa, and Southern Africa are among them.

Geographically, according to the United Nations definition, the term may also cover polities that only have a portion of their territory located in that region, in addition to the African countries and territories that are totally situated in that particular region (UN). According to the organization defining the region, there are between 46 and 48 countries included in this non-standard geographical area (e.g., UN, WHO, World Bank, etc.). The African Union, which recognizes all 55 of the continent's Member States, divides them into five clearly defined regional groups.

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There would be 8 extinctions. we expect to go extinct since 1500 under normal circumstances

WHAT IS BACKGRROUND EXTINCTION RATE?

Hence, keeping that in mind there would be 8 extinctions as there are ~40,000 species.

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Sediment is usually deposited by the stream at locations where the stream the speed of the water current decreases.

Sediments are the soils and rocks that rivers and streams deposit. Where the flow of the water is slower, rivers and streams deposit sediment. In rivers, whereas erosion happens along the outside bank of the curve where the water flows much quicker, deposition occurs along the inside bank of the bend where the water flows slower.

Fast-flowing water leads to the formation of a delta. A delta is a fan-shaped mound of debris left behind near a stream's mouth. A delta is often formed of mud and develops on flat terrain.

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Skin pathogens frequently enter the body through sweat gland ducts and hair follicles. The assertion is accurate.

There are numerous methods for bacteria to enter your body. They just need an opening to squeeze through. For instance, they might get into your body through your mouth, nose, or ears. Bacteria can even enter through extremely small openings, such as the pores on your skin.

Hair has a role in pathogen defense, a critical biological process in addition to helping us stay warm.

Instead of entering through the hair follicles and sweat glands, skin pathogens enter by breaching the skin barrier.

The claim is therefore false

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Answer:

A viscous magma containing 52% silica and gas would produce a felsic, or explosive, eruption. Felsic eruptions typically produce lava flows that are thick and sticky, and can contain a high concentration of silica. These eruptions can also produce large ash clouds and pyroclastic flows, as the gas trapped in the magma expands and escapes during the eruption. Examples of felsic volcanic eruptions include the eruption of Mount St. Helens in 1980 and the eruption of Mount Pinatubo in 1991.

Converting the genes to mRNA and using the table of genetic codes:

Gene 1: Leu   Phe   Arg   Cys   (stop codon)

Gene 2:   (stop) Arg   (stop) Ala

The genetic codes, otherwise known as codons, are codes containing 3 nucleotide bases with each code specifying an amino acid. The nucleotide bases are mRNA bases.

Thus, for each gene, the mRNA bases would be the complementary bases.

Using the genetic code table:

For the first mRNA sequence: CUG UUC AGG UGU UAG

                                                  Leu   Phe   Arg   Cys   (stop codon)

For the second mRNA: UAA  CGU  UAG  GCC

                                       (stop) Arg   (stop) Ala

In other words, the amino acid for the first gene would be Leucine, Phenyline, Arginine, Cysteine, and a stop codon.

For the second gene, the amino acids would be a stop codon, Arginine, a stop codon, and Alanine.

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Of signs, words, messages sent by code, or other noises. Short sentences, words, or syllables used in standardized articulation tests provide a measurement

At specific locations on the DNA known as replication origins, a protein complex called a DNA helicase attaches to the DNA. The genetic code's base substitution symmetry predicts 2' or 3' REFERENCE WORDS: Photoionization, R-matrix, Cross section, and ion that resembles beryllium Participants read 54 genuine words ending in /a, e, o/, with either final /e/ or /o/, to determine which final form best fits the complete framework for orthogonal polynomials. An Integrative Molecular Biology Kinetic Formalism: appearance in The words themselves can be anything from a collection of consensus amino acid sequences

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The assertion is true. During DNA replication, the enzyme DNA Polymerase covalently joins nucleotides to create new DNA strands.

Semi-conservatism applies to DNA replication. The double helix's strands serve as models for the creation of new, complementary strands. DNA polymerases, which require a template and a primer (beginning) and synthesise DNA in the 5' to 3' orientation, are the enzymes responsible for creating new DNA.

Only strands or primers of DNA or RNA that are base paired with the template can have nucleotides added to them by the DNA synthesis enzyme, DNA polymerase. The covalent binding of the incoming nucleotide to the primer requires the enzyme DNA polymerase.

Therefore, we can conclude that the proposition is accurate. During DNA replication, the enzyme DNA Polymerase covalently joins nucleotides to create new DNA strands.

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There is a 25% probability that a mating between two carriers will produce an offspring with a recessively inherited disorder.

Inorder to understand the probability of mating between two carriers, we need to form a punnet square. In the field of biology, a punnet square is a diagram that shows the probability of outcomes when mating is done between two prospect parents.

Consider two carrier mates to be Hh and Hh. The punnet square will be drawn as:

             H         h

H        HH        Hh

h         Hh         hh

The results of the punnet square show that there is 25% probability for the recessively inherited disorder to occur. 50% probability is there for the offspring being carriers like the parents and 25% probability is that there will be no disorder in the offspring.

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The structural support of the plant is provided by the cellulose embedded in the cell wall while the mechanical support is provided by collenchyma cells.

Plant structural support is the permanent deposition of polymers such as lignin or cellulose in cell walls to maintain the shape of the plant and its cells.

Cellulose is an important structural component of the cell walls of plant cells. Cellulose provides structural rigidity and tensile strength to these cells. Cellulose is made from many covalently-linked glucose monosaccharides.

Collenchyma cells have thick walls that are especially thick at their corners. These cells provide mechanical support for the plant.

Collenchyma is a living, elongated, mechanical and flexible ground tissue with angular pectin depositions; present just under leaves, tendrils and stems of climbers; formed before vascular differentiation.

The major difference between the mechanical support and structural support can be found mentioned above.

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"Enzymes stabilize the transition state and decrease its free energy" is correct about the role of enzymes.

Enzymes are proteins that act as biological catalysts with the aid of accelerating chemical reactions. The molecules upon which enzymes may also act are known as substrates, and the enzyme converts the substrates into distinct molecules known as products.

Enzymes are crucial for digestion, liver function, and much more. An excessive amount of or too little of a sure enzyme can reason fitness issues. Enzymes in our blood can also assist healthcare carriers to check for injuries and sicknesses.

Characteristics of enzymes:

* Enzymes are complicated macromolecules with a high molecular weight

* They catalyze biochemical reactions in a cell.

* Enzymes have an effect on the rate of biochemical response and not the direction.

* Enzymes are unique in movement.

* Enzymatic activity decreases with growth in temperature.

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Answer:

pls rate as brainliest

Explanation:

DIFFERENCES

An isolated island is where allotropic speciation is most likely to happen. Because of the island's proximity to the mainland, there is less chance of gene , the emergence of new species.

A nearby island to the mainland would have a lower probability of allopatric speciation than an isolated island of the same size. The breakaway group's gene pool could not be reflective of the parental population due to its tiny number. We anticipate this outcome because allotropic speciation ongoing gene flow between populations on the mainland and those on a neighboring island lowers the likelihood that there will be sufficient genetic diversity to lead to allopatric speciation.

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The correct statement which describes different parts of the genetic information are used in different kinds of cells is b)replicated chromosomes separate during gamete formation. So, correct option is b.

Mendel suggested that matching and partition of a couple of chromosomes at the hour of gamete development will prompt isolation of sets of elements as variables are conveyed by chromosomes. Thus, they demonstrated Mendel's law of isolation that expresses that elements controlling a person separate during gamete development.

The information on chromosomal development and isolation was joined with Mendelian standards and this was called chromosomal hypothesis of legacy. Partition of the sets of chromosomes at the hour of gamete development neither outcomes in the arrangement of zygote nor influences the cycle. The development of zygote happens when the male gamete wires with the female gamete.

Hence, correct option is b.

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Dichotomous means divided into two parts, and in a dichotomous key, each step attempts to narrow the choices based primarily on the characteristics of an organism and assist the user in identifying the item.

A dichotomous key is a useful scientific tool for identifying different organisms based on their observable characteristics. Dichotomous keys are made up of a series of statements, each with two options, that guide users to the correct identification. It starts with tree, flower, animal, vegetable, or mineral and continues until all other possibilities are exhausted. 

The three most common types of dichotomous keys are nested, linked, and branched dichotomous keys. In the nested type, humans get the answer to each statement that is nested right next to it. We use text lists to identify objects in linked types. The dichotomous key inside the branched type is created using a tree diagram.

Linnaeus didn't take into account the relationships among similar species, and the classification is a rank-based system. As a result, the Linnaean classification scheme as well as Dichotomous key use physical characteristics of organisms to group people together.

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These are majorly motor nerves.

Therefore, motor nerves are responsible for signal transduction and stimulation of targeted muscle, organ or gland.

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The mucous membrane that lines the eyelids is the conjunctiva.

The eye is a sensory organ that functions to provide vision. Based on the anatomical structure, the eye is divided into 3 layers, which consist of the outer layer of the cornea and sclera, the uvea in the middle, and the retina in the deepest layer. When looking at an object, the extraocular muscles voluntarily move the eyeball to find the object.

The conjunctiva itself is a part of the eye in the form of a thin layer which functions to protect the eyeball and contains blood vessels to provide nutrition to the membrane. The conjunctiva protects the eye by producing mucus and tears which will block bacteria or foreign objects from entering the eye. The conjunctiva also causes the eyelids to move easily.

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My choice would be c. small white fruit, only. If the stem of the original organism is planted in a garden, it will most likely produce small white fruit, just like the original organism.

When a stem is removed from a plant and planted in a garden, the chances of it growing into a new plant are quite high. In this case, the original plant produces small white fruit, so if the stem were to grow into a new plant, it would most likely produce small white fruit as well. This is because the stem carries the genetic material of the original plant, which includes the information about the type of fruit it produces.

Large red or pink fruit on the same plant as small white fruit is highly unlikely. This is because the genetic material carried by the stem does not contain the genetic information for the production of large red or pink fruit. Therefore, if the stem were to grow into a new plant, it would most likely produce small white fruit, only.

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Energy from sunlight must be absorbed for the photosynthesis of sugar molecules to occur. Therefore, photosynthesis is an endergonic process.

Photosynthesis is an endothermic reaction since it uses energy. This energy comes from light, most often from sunshine. The process transforms the electromagnetic energy of the sun into hydrogen gas, which is subsequently kept in the plant through chemical bonds. On Earth's surface, sunlight serves as the main energy source. Plants use their leaves to capture light energy during photosynthesis. Water and carbon dioxide are converted by plants into a sugar known as glucose using the power of the sun. Plants use glucose as a source of energy and to create other compounds like starch and cellulose. Because they are autotrophs, plants make their own nourishment. Using photosynthesis, they convert water, sunlight, as well as carbon dioxide into oxygen and simple sugars that the plant consumes as fuel.

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The stage of the cell cycle where each chromosome is composed of two chromatids in preparation for mitosis is called phase S.

Each chromatid was duplicated as a result of S. The sister chromatids are still referred to as one chromosomes since they have a single centromere. The cells are in G2 and getting ready for M when finished.

phase S. The cell creates a full copy of the DNA in its nucleus during the S phase. Additionally, it makes duplicates of the centrosome, a structure that organizes microtubules. During M phase, the centrosomes aid in the separation of DNA.

A normal diploid somatic cell enters S phase with a 2N complement of DNA and ends it with a 4N complement of DNA. S phase is a period of extensive DNA synthesis during which the cell replicates its genetic material.

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Answer:

c answer is correct please

Answer: S2 to S4

Explanation: