Plant cells have large, round vacuoles they primarily use for -


A) water storage

B) energy production.

C) protein synthesis.

D) waster removal

Answer:

18

Explanation:

gametes only contain one half of a full genome (genetic makeup) so 36/2 is 18

Answer:

It is located in Eurasia.

Explanation:

Answer:

Georgia is located in southwestern Asia. Georgia is bordered by the Black Sea, Russia to the north, Armenia and Turkey to the south, and Azerbaijan to the east and south.

Answer:

C) Energy in the form of heat is transferred throughout the ocean only by waves and surface currents.

Explanation:

Heat is transferred between the surface of a sea or ocean and the atmosphere through radiation, convection, and turbulent heat exchange and by means of the evaporation of water and condensation of water vapor above the sea or ocean.

If it's not C then my best guess would be D. This one is kind of tricky!!

Hope this helped!!!

After analyzing the given DNA samples, it can be concluded that the murder was committed by Suspect B, i.e., Bob.

The given case of the "Parking lot murder" involves two suspects, Alex and Bob. Alex was convicted and sent to prison for the murder based on eyewitness testimony and fingerprint analysis on the weapon used in the crime. However, his lawyers have petitioned the state to revisit the case using modern DNA fingerprinting techniques.

There are three pieces of DNA evidence in this case - a blood sample (evidence 1), a hair sample (evidence 2) found at the scene, and DNA samples from three suspects - Alex, Bob, and the victim. The given DNA samples can be analyzed using PCR amplification and DNA electrophoresis. The DNA profiles of the three suspects and the two pieces of evidence can be obtained and compared to reach a conclusion.

The DNA profile of the victim can be used to differentiate between the victim's DNA and that of the suspects. The DNA profile of the blood sample (evidence 1) can then be matched with the suspects' DNA profiles to identify who might have left the blood sample at the scene. Similarly, the DNA profile of the hair sample (evidence 2) can be matched with the suspects' DNA profiles to identify who might have left the hair at the scene.

Using this process, it can be concluded that the blood sample found at the scene matches the DNA profile of Bob. Hence, he was the one who left the blood sample at the scene. Also, the hair sample found at the scene matches the DNA profile of Alex, which means he left the hair at the scene. However, the DNA analysis of the weapon used in the crime indicates that the DNA profile matches with Bob's DNA profile. Hence, it can be concluded that Bob committed the murder, and Alex was wrongly convicted.

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This is called the juvenile phase, reproductive phase.

Answer:

Bones produce blood cells. So, if there are no bones in our body, then our body cannot make blood. So the answer is B.

In a population in Hardy-Weinberg equilibrium, at a bi-allelic locus with a frequency of the dominant allele of 0.5, the frequency of heterozygotes in the f5 generation is 0.25.

The Hardy-Weinberg Equilibrium states that the frequency of a dominant allele and the frequency of heterozygotes can be calculated using the following equation:
Frequency of heterozygotes = 2 * (frequency of dominant allele) * (1 - frequency of dominant allele)
Therefore, in the population described in the question, the frequency of heterozygotes in the f5 generation is 0.25, calculated as 2 * (0.5) * (1 - 0.5) = 0.25.

If a population is in the state of Hardy-Weinberg equilibrium, the gene pool's allele and genotype frequencies are expected to remain constant from one generation to the next without evolutionary processes.

The allele frequency is the relative frequency of a gene variant or allele in a population. Heterozygosity is a measure of the genetic diversity of a population. It is defined as the proportion of heterozygotes in a population at a bi-allelic locus.

In a population that is in Hardy-Weinberg equilibrium, the equation for allele frequency is given as p + q = 1, and for genotype frequency, the equation is given as p² + 2pq + q² = 1, where p is the frequency of the dominant allele and q is the frequency of the recessive allele. A population is in Hardy-Weinberg equilibrium.

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Answer:

all mutations have a harmful effect on organisms

Explanation:

The leading cause of lung cancer risk is cigarette smoking. About 80% to 90% of lung cancer deaths in the US are attributed to smoking cigarettes.

Smoking cigars and pipes as well as other tobacco products raises the risk of developing lung cancer.

Diet - The usual foods you choose to eat can potentially increase your risk of getting certain cancers. A diet high in processed meats, such as ham, bacon, or salami, can raise your risk of stomach cancer, bowel cancer, and pancreatic cancer.

You can manage the side effects of cancer and its treatment with the support of a healthy diet, exercise, and stress-relieving activities. In fact, according to Dr. Yarmus, some cancer treatments are more effective when you exercise more, eat healthier, and eliminate bad habits like smoking.

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The organs of the simple excretory systems of earthworms are called nephridia.

What is an excretory system?

Excretion is the method by which metabolic wastes and toxic substances are removed from the body by living organisms. The removal of waste substances from the body is known as excretion. Excretion is one of the most crucial biological processes since waste products can build up and cause harm if they are not eliminated. All organisms, including plants, animals, and humans, have excretory systems that assist in the elimination of waste products.

Nephridia are the organs of the simple excretory systems of earthworms. These are very basic excretory systems that are present in a variety of invertebrates. Nephridia are responsible for regulating the body's fluid and electrolyte balance, as well as excreting metabolic waste products such as ammonia.

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Earthworms have a simple excretory system consisting of a pair of Nephridia or nephridium (sing.) which are the organs of the simple excretory systems of earthworms.Nephridia in earthworms is the excretory organs and eliminates metabolic waste in the form of urine.

It also plays an important role in regulating the concentration of body fluids and salt balance. The earthworm has two pairs of Nephridia, the septal nephridia, and the pharyngeal nephridia.The septal nephridia consists of a coiled tube that runs from the dorsal body wall down to the ventral body wall in each segment of the earthworm. It is involved in excreting waste products from the body of the earthworm. The coiled tube has a funnel-like structure called the nephrostome, which collects body fluids and metabolic wastes.

The nephrostome leads into the tubular nephridium that removes the waste product from the body and excretes it to the outside through a small pore called a nephridiopore.Pharyngeal nephridia are located in the earthworm's pharynx and are involved in the excretion of nitrogenous wastes from the body. It is present in the earthworm's mouth cavity and helps in the discharge of waste from the pharynx to the outside of the body through the pharyngeal nephridiopore.

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Answer:

Botulism toxin disrupts motor control by blocking the release of acetylcholine by motor neurons.  

Explanation:

Acetylcholine is the principal neurotransmitter in motor neurons. If there is no release of acetylcholine from the presynaptic motor neuron, the ion channels will not open. If the ion channels do not open, Na+ cannot enter the postsynaptic membrane to start an action potential. As a result, the muscle can not move.

The ion channels have a specif receptor for acetylcholine. When acetylcholine binds to the receptors, the channels open. With the ion channels open, Na+ can enter the postsynaptic membrane to start an action potential. This does not happen in the presence of botulism toxin since it blocks the release of acetylcholine.

You might be referring to this question - 'Part Of The Hanging Canyon Is Home To A Hidden Ecosystem With More Plants, Animals, And Water Than The surrounding environment. what is the best explanation for why this occurs?'

Here is the solution. The Hidden ecosystem in the Hanging canyon has more of an ecosystem because of the climate there.

Since the Hanging Canyon is big enough to have an ecosystem, it does have one and more richer one as compared to its surroundings. The reason behind this is that it has a more humid and cooler climate. The surrounding regions are comparatively hotter.

It is because of the environment that more flora and fauna are found here.

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Answer:

What can be determined from the graph includes;

a) The Mechanical Energy M.E. = 1.0

b) The initial K.E. =  1.0, The initial P.E. = 0

c) The period for the kinetic energy = The period for the potential energy = 0.25

d) The frequency of oscillation of the kinetic and potential energy = 4 Hz

e) The object starts with its maximum velocity

Explanation:

The equation between kinetic energy, K.E., potential energy, P.E. and total mechanical energy, M.E. is given as follows;

M.E. = K.E. + P.E. = Constant

From the graph, we  have;

a) M.E. = K.E. + P.E. = 1.0

b) At time t = 0,

The initial K.E. = M.E. = 1.0, P.E. = 0

At time t = 0.125,

P.E. = M.E. = 1.0, K.E. = 0

c) The period for the kinetic energy, K.E. = The period for the potential energy, P.E. = 0.25

d) The frequency of oscillation of K.E. and P.E. = 1/T = 1/0.25 = 4 Hz

e) The object starts in motion with maximum velocity at time t = 0.

Answer:

A cryptogram is a type of puzzle that consists of a short piece of encrypted text. Generally the cipher used to encrypt the text is simple enough that the cryptogram can be solved by hand. Substitution ciphers where each letter is replaced by a different letter or number are frequently used.

Answer:

B and D should be correct.

Explanation:

A is incorrect because food and proteins can help build fuel for you body, which is the same as vitamins.

B is correct because vitamins are organic compounds found in very small amounts in food and required for normal functioning—indeed, for survival. Humans are able to synthesize certain vitamins to some extent. For example, vitamin D is produced when the skin is exposed to sunlight; niacin can be synthesized from the amino acid tryptophan; and vitamin K and biotin are synthesized by bacteria living in the gut.

C is incorrect because while vitamins are good for your body, food is also great and something you need to live. Getting nutrients and proteins from food is essential and a need in life.

D is correct because some vitamins from B-complex, hypervitaminosis usually occurs with the fat-soluble vitamins A and D, which are stored, respectively, in the liver and fatty tissues of the body. These vitamins build up and remain for a longer time in the body than water-soluble vitamins. Taking too many vitamins without food or water isn't healthy, and is not giving your body is proper nutrition levels!!

I hope this helps! :)

Homologous recombination is most likely to occur during the S and G2 phases of the cell cycle, specifically during the late S and early G2 phases. This is because, during these phases, the sister chromatids are available as templates for repair.

Homologous recombination is a DNA repair mechanism that utilizes a homologous DNA sequence as a template to repair DNA damage, such as double-stranded breaks (DSBs). The process involves the exchange of genetic material between the damaged DNA strand and an undamaged homologous DNA strand.

During the S phase of the cell cycle, DNA replication occurs, resulting in the formation of two identical sister chromatids connected at the centromere. The newly replicated DNA strands serve as templates for homologous recombination repair. If a DSB occurs during the S phase, the sister chromatid can be used as a template for flawless repair.

As the cell progresses into the G2 phase, the replicated DNA is fully condensed and prepared for cell division. At this stage, the sister chromatids are still available and closely associated, making them suitable for homologous recombination repair.

Therefore, homologous recombination is most likely to occur during the S and G2 phases of the cell cycle when sister chromatids are present and available as templates for the flawless repair of double-stranded DNA breaks.

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Answer:

The maximum amount of energy passed to a consumer is 20000J

Explanation:

This is calculated by subtracting the 50000J of waste heat from the 10000J of solar energy, leaving a total of 30000J of energy in the grass's waste products. Subtracting the 30000J of energy in the grass's waste products from the 10000J of solar energy leaves a maximum amount of energy passed to a consumer of 20000J.

Answer:

The FDA( Food and Drug Administration) Chief ,Stephen Hahn said plasma gotten from people who recovered from the corona virus should be used in treatment and production of the vaccines.

This didn’t go well with other scientists and health workers as there was no sufficient data to ascertain the efficacy of the plasma of recovered patients and they rebuffed it which later made the FDA Chief to apologize.

Answer:

The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. In this way, the genetic material of a cell is doubled before it enters mitosis or meiosis, allowing there to be enough DNA to be split into daughter cells.

Explanation:

Answer:

The organism is the highest level of organization.

The increased action potential causes the muscle tension to reach its peak and cause the muscle contraction in order to achieve tetanus.

The muscle contraction is referred to as a tetanus if the frequency of action potentials produced rises to the point where muscle tension has peaked, plateaued, and no relaxation is visible. When the motor neuron that innervates a skeletal muscle generates action potentials at a very fast rate, tetanus, a persistent muscular contraction, is elicited.

Every trigger results in a twitch. When the stimulation is delivered slowly enough, the muscles relax between each consecutive twitch. Twitches will overlap if stimuli are presented often, leading to tetanic contraction. There may be two types of tetanus: fused or unfused.

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Answer:

1 : 5

Explanation:

Ratio is used to show the relationship between two amounts. It tells how many one value is contained within another value. Ratio can be used to compare the size of two or more numbers in relation to each other.

The comparison between this two numbers or quantities is done and expressed by division.

Ratio of triangles to squares = number of triangles : number of squares

Ratio of triangles to squares = 4 : 20

Ratio of triangles to squares = 1 : 5

Answer:

It contains many genes.

Explanation:

Genes are region in DNA that code for stuff. Thus, one strand of DNA has many genes.

Answer:

One of the most critical interactions in an ecosystem between the biotic and abiotic environment is photosynthesis, the base chemical reaction that drives most life on earth. Plants and algae use sunlight, water and carbon dioxide to create the energy they need to grow and live via photosynthesis.

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Answer: If new species, studies come to the table and the classification is not compatible with them

Explanation: Like a new animal was discovered but even using the eight levels of classification scientists couldn't figure what the animal was

The system might be updated when new species discovered don't match

any level of classification.

The levels of classification help to differentiate plants and animals through

the presence of specific features or behavior.

When new living things are found and the required feature for classification

doesn't match any of the available levels then the scientists can decide to

include a new one to accommodate the new species discovered and for

subsequent study.

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A typical action potential in a neuron is caused by the process of depolarization.

The process of depolarization is responsible for generating a typical action potential in a neuron. Neurons are specialized cells that transmit electrical signals in the nervous system.

Resting membrane potential is the stable negative charge inside the neuron, maintained by the unequal distribution of ions across the cell membrane. When a neuron receives a stimulus, it triggers a depolarization phase. This occurs when the membrane becomes permeable to sodium ions, allowing them to rush into the cell.

The influx of positive charges leads to a rapid change in the membrane potential, creating a depolarization wave. This wave propagates along the neuron's axon, resulting in the generation and transmission of an action potential.

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