I need help on this question please!

Answer:

Twice

Explanation:

chromosomes in diploid cells are described as 2n, which is twice the number of chromosomes in a haploid cell.

Answer:

boron

Explanation:

Answer:

It's A.

Explanation:

During his trip to the Galápagos Islands, the observation that led Charles Darwin to suspect that organisms change over time was the variation in the characteristics of finches between different islands.

On the Galápagos Islands, Darwin noticed that each island had its own unique species of finches with distinct beak shapes and sizes. He observed that the finches' beak adaptations seemed to be correlated with the type of food available on each island.

This observation led him to suspect that the finches had descended from a common ancestor but had adapted to different environments over time.

Darwin realized that the variations in beak characteristics among the finch populations were a result of natural selection.

The finches with beak shapes and sizes that were well-suited to their specific food sources had a better chance of survival and reproduction.

This meant that beneficial traits were more likely to be passed on to future generations, gradually leading to changes in the population over time.

This observation of variation and adaptation in the finches of the Galápagos Islands was one of the key pieces of evidence that contributed to Darwin's theory of evolution by natural selection.

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The types of inheritance include:

1) SINGLE INHERITANCE : A child/derived class is derived from only one parent/base class.

EXAMPLE : Dog Class inherits the Animal class.

2) MULTIPLE INHERITANCE : A child/derived class is derived from more than one parent/base class.

EXAMPLE : A class Bat is derived from base classes Mammal and WingedAnimal.

3) HIERARCHICAL INHERITANCE : More than one child classes are derived from single class.

EXAMPLE : Physics, Chemistry and MAths are derived from Science Class.

4) MULTILEVEL INHERITANCE : A derived/child class is derived from a parent class which is derived from a single parent class.

EXAMPLE : Babydog inherits the Dog class which again inherits the animal class.

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Answer: A. The amount of DNA is doubled so that the two new cells each have the same original amount.

Explanation:

I will say the answer to this question is A; I am pretty sure. I remember learning that DNA makes a copy of itself before the beginning of mitosis. If I am wrong, I am sorry; it has been a long time since I learned this.

Answer:

Explanation:

speed of the reaction i think as an enzyme is a catalyst which increases the speed of a reaction without being changed/used up in the reaction.

Answer:

D. Plants grow best in sunlight.

Explanation:

The other answers can't be scientifically proven, therefore they would not make a good hypothesis. A hypothesis is a statement that can be tested and verified.

Plant will grow best in sunlight. So, the correct option is (D).

According to the evolution-immunity hypothesis in ecology, fast-growing plant species should suffer more from herbivores and pathogens than slow-growing species. Tests of this hypothesis have focused on above ground plant tissues, herbivores and pathogens. This should also apply to route defense.

When the amount of fertilizer applied to the plants is increased, the growth which is the height of the plant increases. As the amount of fertilizer increases, plant growth increases.

Plant growth shall be considered as an increase in plant volume and/or mass with or without the formation of new structures such as organs, tissues, cells or cell organelles that grow in the presence of sunlight.

Thus, plant will grow best in sunlight. So, the correct option is (D).

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A strain of Neisseria gonorrhoeae has undergone a mutation and is no longer able to make pili because The bacteria will become less virulent and will not be able to readily establish infection.

A deviation from the typical DNA sequence at a certain gene locus. Although the phrase is frequently associated with negativity, mutations (including polymorphisms) can affect cell activity in ways that are negative, positive, or neutral.

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Motor neuron transmits impulses from the central nervous system to effectors such as muscles and glands.

To effector organs like muscles and glands, the CNS delivers impulses via efferent, or motor, neurons.Typically, efferent neurons have long axons and short dendrites.

Motor neuron also referred to as efferent nerves, send impulses to muscles and glands from the brain or spinal cord. Afferent nerves also referred to as sensory nerves, transmit impulses from sensory receptors to the brain.

The nerve impulse is frequently referred to as a "action potential." It speaks of the electrical signal that an activated neuron sends out. The synapses, or connections between the cells, then send this signal.

Complete question:

Which type of neuron transmits impulses from the central nervous system to effectors such as muscles and glands?

A. Sensory neuron

B. Motor neuron

C. Interneuron

D. All of the above

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Answer: Yes I do.

Explanation:

Chemical fertilizers provide the plant with the major nutrients they need which are Nitrogen, Potassium and Phosphorus and they do so in abundant quantity such that the plant is able to utilize them and grow faster.

Organic fertilizer also provides those same nutrients but does so at a slower rate. It will however add other things to the soil such as beneficial microorganisms, and microbes which will work overtime to improve soil fertility.

In building soil fertility, the plant will have more nutrients as it grows.

Using both is therefore balanced with one providing nutrients early and the other ensuring that nutrients will be continually available for the plant.

Enzymes are proteins that act as catalysts in biochemical reactions. A catalyst is a substance that increases the rate of a chemical reaction without itself being changed in the process.

Enzymes are molecules that increase the rate of a chemical reaction by lowering the activation energy of the reaction. Activation energy is the amount of energy that is required to initiate a chemical reaction.

Enzymes are classified as catalysts, inhibitors, accelerators, or depressants, depending on their function in the reaction. A catalyst is a substance that increases the rate of a reaction without itself being changed in the process. This is the most common type of enzyme, and they are responsible for the majority of biochemical reactions that occur in living organisms. Inhibitors are molecules that reduce the rate of a reaction by binding to the enzyme and slowing or stopping its activity.

Accelerators are molecules that increase the rate of a reaction by increasing the binding affinity of the enzyme for its substrate. Depressants are molecules that reduce the rate of a reaction by decreasing the binding affinity of the enzyme for its substrate.

Enzymes are important components of all biochemical reactions, as they are responsible for lowering the activation energy of the reaction and increasing the rate at which it occurs.

Without enzymes, many biochemical reactions would simply not occur in living organisms, as the activation energy required for them to occur would be too high. By adding enzymes to a chemical reaction, the activation energy is lowered and the reaction can occur more quickly and efficiently.

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Impurities increase a sample's boiling point and increase the range of temperature at which the sample will boil.

The presence of impurities in a substance can affect its boiling point. Generally, a pure substance has a sharp and well-defined boiling point, meaning that it will boil at a specific temperature under a given set of conditions.

However, the presence of impurities can raise or lower the boiling point of a substance and make it more difficult to accurately determine its boiling point.

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The growth, DNA synthesis, and cell division processes that occur repeatedly are known as the cell cycle. The cell cycle in eukaryotes is more intricate.

The eukaryotic cell spends the majority of its "life" in the cell cycle's interphase, which is separated into the three stages G1, S, and G2. One of the many stages a cell goes through during its existence is cell division. In prokaryotes, the cell cycle is rather straightforward: the cell multiplies, its DNA is copied, and the cell splits.

The illustration below shows the eukaryotic cell cycle. As you can see, there are various phases in the eukaryotic cell cycle. Indeed, both mitosis and cytokinesis are a part of the mitotic phase. The cytoplasm then divides, followed by the nucleus.

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Decomposers play a critical role in the flow of energy through an ecosystem. They break apart dead organisms into simpler inorganic materials, making nutrients available to primary producers.

Explanation:

Answer:

D. Hypotonic

Explanation:

Answer:

C. Isotonic

Explanation:

i took the quiz and its right

Answer:

The cell is diploid because the homologous chromosomes are still located within the same cell membrane.

Explanation:

Answer:

homologous chromosomes are still located within the same cell membrane. Only after the first cytokinesis, when the daughter cells of meiosis 1 are fully separated, are the cells considered haploid

Explanation:

Answer:

Climate change can overwhelm the capacity of ecosystems to mitigate extreme events and disturbance, such as wildfires, floods, and drought.

-TheUnknownScientist

According to the research, the correct option is false. During the prophase stage, loosely arranged stands of chromosomes don't become coiled, shortened and distinct.

To find the correct option amongst all other options, we need to know more about prophase stage and which characteristics it has.

Therefore, we can conclude that according to the research, the correct option is false. During the prophase stage, loosely arranged stands of chromosomes don't become coiled, shortened and distinct.

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Answer:

?

Explanation:

?

The upper-body muscles that are commonly overactive in the kendall kyphosis-lordosis posture are shoulder adductors, intercostals, pectoralis minor, and internal obliques. Option C is the correct answer.

This refers to a posture in which the head is brought to the forward position, the neck is hyperextended, the thoracic spine is flexed more than usual (and usually, the scapulae are protracted, or rounded forward), the lumbar spine is hyperextended, the pelvis is tilted anteriorly, and the hip joints are somehow flexed.

what are upper-body muscles?

This refers to muscles located at the upper part of the body. For example Rhomboids, Deltoids, Rotator Cuff (Rotators), Pectorals, Biceps, Triceps, Forearm Muscles, and Trapezius. etc.

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Answer:

When water moves into a plant cell, the vacuole gets bigger, pushing the cell membrane against the cell wall. The force of this increases the turgor pressure within the cell making it firm or turgid . The pressure created by the cell wall stops too much water entering and prevents cell lysis.

a) Based on the nucleotide composition alone, we cannot determine if this RNA molecule is single stranded or double stranded.

b) In DNA, A pairs with T (which is not present in RNA), and C pairs with G. Therefore, if this RNA molecule was transcribed from DNA, the percentage of A would be 15% and the percentage of T would also be 15%. The percentage of C would be 20% and the percentage of G would be 35%.

c) Since there are 1500 nucleotides in the DNA molecule, there would be 1500 nucleotides in the RNA molecule after transcription. However, it's important to note that not all of these nucleotides will be part of the coding region for a protein. Only a portion of the DNA molecule is transcribed into RNA, and that portion is then translated into a protein.

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A microorganism (or microbe) is any microscopic living organism or virus, that is too small to see with the unaided human eye without magnification. Microorganisms are very diverse. They can be single-celled or multicellular and include bacteria, archaea, viruses and most protozoa, as well as some fungi, algae, and animals, such as rotifers and copepods. Many macroscopic animals and plants have microscopic juvenile stages. Some microbiologists also classify biologically active entities such as viruses and viroids as microorganisms, but others consider these as non-living.

Compared to opium or cocaine the prevalence of marijuana merchandise amongst patent medicines for the duration of the nineteenth century was much lower.

Marijuana turned into used as an all-reason medication within the 1800s. infantrymen who used heroin in Vietnam were generally capable of giving up their addiction upon going back to the united states.

The Marihuana Tax Act of 1937 basically banned it nationally in spite of objections from the American medical affiliation associated with clinical utilization. This act came just a year after the movie Reefer insanity warned dad and mom that drug dealers would invite their teenagers to jazz events and get them hooked on “reefer.”

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Ribosomes produce proteins, which are then transported from the endoplasmic reticulum (ER) in small sacs known as transport vesicles. The transport vesicles sever the ER's ends. The rough endoplasmic reticulum collaborates with the Golgi apparatus to transport new proteins to their correct locations within the cell.

Protein cargo travels from the ER to the Golgi, where it is modified before being delivered to various locations in the cell, including the lysosomes and the cell surface. The Golgi digests proteins produced by the endoplasmic reticulum (ER) before they are released into the cell.

The Golgi digests proteins produced by the endoplasmic reticulum (ER) before they are released into the cell.

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The products formed directly as a result of the movement of electrons through the photosynthetic electron transport chain are: (c) ATP and NADPH.

The photosynthetic electron transport chain is a series of electron transporters present inside the thylakoid through which the electrons move. This electron movement is aimed for the synthesis of ATP and B+NADPH which are used for the synthesis of sugars in the next phase of the process.

ATP stands for Adenosine Triphosphate. It is high energy yielding derivative. The energy in the ATP is stored within its phospho-anhydride bonds. The breakdown of these bonds releases high energy.

Therefore, the correct answer is option 'c'.

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Since animals are not autotrophs, we cannot carry out photosynthesis. Glucose is used as fuel for all bodily functions. Option A is correct.

Animals use glucose and oxygen in aerobic cellular respiration. During this process, glucose molecules are broken down into ATP (adenosine triphosphate) molecules which provide energy for cells to do work. The chief source of energy for animals is carbohydrates, principally glucose. The assimilable carbohydrates in an animal’s diet are converted to glucose and into energy through catabolic chemical reactions.

Once glucose enters an animal's body, it is transported to the cells through the bloodstream. The cells then use enzymes to break down glucose into ATP (adenosine triphosphate), which is the molecule that provides energy for all cellular activities, including muscle contraction, protein synthesis, and the synthesis of other important molecules.

In addition to providing energy, glucose is also important for the production of glycogen, which is a complex carbohydrate that is stored in the liver and muscles.

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