Which quartz sample has probably undergone abrasion in a stream for the longest period of time?

1)A
2)B
3)C
4)D

Answer:

lysogenic cycle

Explanation:

it allows a phage to reproduce without killing its host. Some phages can only use the lytic cycle, but the phage we are following, lambda ( λ), can switch between the two cycles.

The viral genome can be reproduced without harming the host cell during the lysogenic cycle. Here the viral genome becomes part of the host's DNA, and is replicated without causing cell death.

The viral replication cycle in which the viral genome is reproduced without causing damage to the host cell is known as the lysogenic cycle. In this cycle, the viral genome is incorporated into the host DNA and is replicated along with the host cell’s DNA without causing cell death. This is in contrast to the lytic cycle where the virus destroys the host cell to release new virus particles. The lysogenic cycle allows the virus to lay dormant within the host cell, potentially for many years.

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Final answer:

True mosses, ferns, and spike mosses possess alternation of generations in common, which becomes useless for determining the flower of stone's group. Other characteristics they share include the presence of a sporophyte generation that is dominant.

Explanation:

Mosses, ferns, and spike mosses share the presence of alternation of generations, which is the cycle of having a haploid gametophyte stage and a diploid sporophyte stage in their life cycles. The sporophyte generation is dominant in these plants, meaning it is the more visible and longer-lived stage.

In terms of the other characteristics listed, true mosses, ferns, and spike mosses differ. True mosses have simple midrib-like structures resembling true leaves, while ferns have fronds and spike mosses have strap-like leaves. True mosses and spike mosses have flagellated sperm, while ferns do not. Additionally, true mosses and spike mosses lack true roots, instead having multicellular rhizoids, while ferns have true roots and leaves.

Homeostasis depends primarily on positive feedback is a false statement rest of all are true about homeostasis, hence option A is correct.

It is the condition in which an organism develops, a process through which its body has the ability to maintain stability if any change is occur in the external environment.

Homeostasis results in the following observations:

As external environment is changed there is a need for an organism to change according to the condition for its survival.

Therefore, option A is false about homeostasis.

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Answer:

Symptoms of protozoan and helminthic diseases are diarrhea, nausea, vomiting, cramps, fever, dehydration, anorexia, abdominal discomfort and weight loss.

Explanation:

Protozoan diseases such as malaria, giardia, and toxoplasmosis caused by protozoan organisms while helminthic diseases are caused by parasitic worms. These worms attack on the helminths which is a body part of human. Symptoms of protozoan and helminthic diseases are due to the attack of parasitic worms and harmful protozoans on the body parts of human beings.

The correct option is b) The damage to host tissues by the parasites. Symptoms of protozoan and helminthic diseases are due to the damage to host tissues by the parasites.

These mechanisms together contribute to the overall symptoms experienced during protozoan and helminthic infections.

COMPLETE QUESTION

Symptoms of protozoan and helminthic diseases are due to ________.

a) The release of toxins by the parasites

b) The damage to host tissues by the parasites

c) The immune response of the host

d) All of the above

Answer:

Whereas superficial flexors in the anterior compartment of the forearm originate from the medial epicondyle of the humerus, the superficial extensors in the posterior compartment of the forearm originate from the lateral epicondyle of the humerus.

Explanation:

The forearm has 2 compartments: an anterior compartment responsible for the flexion of the wrist, and a posterior compartment with the function to extend the wrist.

The superficial muscles in the anterior compartment arise from the common flexor tendon that originates from the medial epicondyle of the humerus. This compartment is mostly innervated by the median nerve.

The superficial muscles in the posterior compartment originate from the lateral epicondyle of the humerus and are innervated by the radial nerve.

The ulnar nerve innervates the flexor carpi ulnaris and flexor digitorum profundus in the forearm.

Answer:

Its 0N

Explanation: 50 and 50 pulling from each side will be 0 its like 50-50 from each side wich equals 0

Answer:

B is the answer.

Explanation:

The two children are exerting equal, but opposite forces that are balanced. Resulting to the net force is zero.

Answer:

limestones, cause they fwea but nah fr no cap its limestones

Limestone is the type of rock would most likely be weathered by acidic groundwater to produce a cave. So, the correct option is (D).

Limestone is a type of carbonate sedimentary rock. It is the main source of physical lime made from the mineral calcite and aragonite, which are different crystal forms of CaCO₃. Limestone is formed when these minerals precipitate out of calcium-rich water.

Limestone is formed when slightly acidic groundwater seeps through limestone rocks that dissolve a hole in the rock. The hole grows in size over time to form caves which are sometimes miles long.

Groundwater carries the dissolved calcite in solution and deposits it in other caves as limestone.

Thus, limestone is the type of rock would most likely be weathered by acidic groundwater to produce a cave. So, the correct option is (D).

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Answer: The answer is B

Explanation: Sickle cell malaria is a genetic disorder that originated in Africa due to Malaria

Answer:

The answer is B

Explanation:

Answer:

Option C,  motility

Explanation:

Enteric nervous system (ENS) is essential for the motility of esophagus, stomach, small intestine and colon. The neural network of ENS controls the propulsive motility without depending on the connections with the brain or spinal cord. In other way, enteric small brain take care of specialized motility in all differentiated compartments along the digestive tract i.e from esophagus to recto-sigmoid

Hence, option C is correct

Answer :in interstellar gases and stars

:contract

:slow evolution

:astronomers have observed their movements over time

:its distance from the other galaxy, its size compared to that of the other galaxy

:denser regions with little space between atoms

:same age stars

The material from the collapsing of parts of a gas cloud will first form clumps ; ( B )  In denser regions with little space between atoms

Since the inner cores of a gas cloud is denser ( i.e. little or no space between the atoms present in the inner cores of the gas cloud ).  when a gas cloud starts collapsing the denser region of the gas cloud will collapse first into small fragments known as clumps.

The clumps formed during the collapsing of the inner core of the gas cloud will come together to form what is known as protostars after a very long period.

Hence we can conclude that the material from the collapsing of parts of a gas cloud will first form clumps  In denser regions with little space between atoms.

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Answer:

grow its cell contents, double its DNA and synthesize proteins

Explanation:

Before a cell can carry out mitosis, such cell will need to grow and develop its contents, synthesize (double) DNA, and also synthesize proteins.

Mitosis involves the equational division of non-sex cells to give two daughter cells. Hence, the contents of a cell that wants to divide by mitosis must be enough to be shared by the two daughter cells.

This is why a cell that will divide by mitosis has to go through the G1 phase, the S phase and the G2 phase where the content of the cells grow and develops, DNA of the cell is replicated, and protein is synthesized respectively. All these processes take place during the interpphase stage of the cell cycle.

Final answer:

Before mitosis, a cell with a diploid number of 4 must replicate its DNA during interphase to ensure each daughter cell receives an identical set of chromosomes.

Explanation:

Before a cell can carry out mitosis, it must first undergo interphase, specifically the S phase (synthesis phase), where the cell replicates its DNA. During interphase, the cell's chromosomes are dispersed as structures in the nucleus and must be duplicated to ensure that each of the two resulting daughter cells receives an identical set of chromosomes. The process of DNA replication is crucial because chromosomes contain genes, which must be accurately distributed to maintain the organism's genetic information. Therefore, when an animal cell with a diploid number of four (2n = 4) undergoes mitosis, it produces two diploid daughter cells each with four chromosomes.

Answer: They would experience-dependent brain functions.

Explanation:

There is a tonne of evidence that points to a common ancestor for all living things on Earth. Numerous sources, including as genetic, morphological, and fossil data, contribute to this proof. First, the genomic data points to a common ancestor for all living things on Earth.

DNA is a component of all living things, and all living things' DNA is made up of the same four nucleotide bases: adenine, guanine, cytosine, and thymine.

The same genetic code, which is a collection of instructions that governs how the data in DNA is utilised to make proteins, is also used by all living things. This shows that all living things had a common ancestor who had the same four nucleotide bases and genetic code.

Second, the data from morphology implies believe there is a single ancestor for all living things on Earth. There are some traits that all species have, such a cell membrane and a nucleus.

Additionally, the same fundamental building ingredients found in proteins, carbohydrates, and lipids make up every single life. This argues that all living things descended from an ancestor who had the same fundamental traits and building components.

Last but not least, fossil evidence points to a common progenitor for all living things on Earth. Direct proof of an organism's evolutionary history can be found in fossils. Scientists have been able to track the evolutionary history of creatures by analysing the fossil record, and they have found that all organisms have developed from a common ancestor. Consequently, there is a lot of data that supports the evidences.

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Answer:

An enzyme is a molecule that speeds up a reaction. In the case of DNA reproduction, enzymes not only speed up the reaction, they are necessary for DNA reproduction.

Explanation:

An enzyme is a molecule that speeds up a reaction. In the case of DNA reproduction, enzymes not only speed up the reaction, they are necessary for DNA reproduction.

Recall that DNA is a long strand with a many repeating base pairs. In order for DNA to reproduce, the base pairs must be split apart. One half of the strand is then used as a template to build a new strand of DNA.

The enzyme helicase is responsible for splitting DNA along the base pairs. Helicase moves along the DNA strand unzipping the strand just as a zipper.

Answer:

sex chromosome are found in haploid cell while autosomes are in diploid cell

Oxygen passes quickly through this air-blood barrier into the blood in the capillaries. Similarly, carbon dioxide passes from the blood into the alveoli and is then exhaled

Answer:

They reproduce using seeds

Answer:

mold juice

Explanation:

Answer:

mold

Explanation:

he used was studying molds and how they formed when he accidentally discovered an antibiotic substance.

Answer:

Hi there! I seen this question on a site named quizlet! So thats how im giving this answer to you right now! Hope this helps!

Explanation:

four gamete types: white/yellow, white/green, purple/yellow, and purple/green

Answer:

virus

Explanation:

a virus is surrounded by a protein coat

Answer:

It removes waste as gas(or carbon dioxide), liquid (like pee or sweat), and as a solid (like poopoo)

Explanation:

Research

The purpose of the excretory system is to remove metabolic wastes such as urea, excess salts, water, and other liquid waste products from the body.

The excretory system is a biological system found in living things that is responsible for the removal of metabolic waste products from the body. The system consists of many organs and parts, such as the kidneys, liver, lungs, skin, and intestines, that cooperate to filter and remove waste products from the blood and other bodily fluids, such as urea, excess salts, and water. and other liquid waste products.

The kidneys, the main organs of the excretory system, are essential for controlling the composition and amount of bodily fluids. Urine, made by the kidneys after filtering waste from the blood, is then carried to the bladder and expelled from the body through the urethra.

Therefore, the purpose of the excretory system is to remove metabolic wastes such as urea, excess salts, water, and other liquid waste products from the body.

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Answer:

The answer is C : Urinary Tract Infections

Hope this helped!

Horsetails are helpful for treating urinary tract infections. Therefore option 3 is correct.

Urinary tract infections: Horsetails have historically been used as a traditional remedy for urinary tract infections (UTIs).

They are believed to have diuretic properties, potentially increasing urine production. However, it is essential to consult with a healthcare professional for an accurate diagnosis and appropriate treatment of UTIs, as they often require antibiotics for effective resolution.

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Answer:

The amount of energy at each trophic level decreases as it moves through an ecosystem. As little as 10 percent of the energy at any trophic level is transferred to the next level; the rest is lost largely through metabolic processes as heat

Explanation:

Final answer:

Only about 10 percent of the energy at one trophic level is available to the next level, with the rest being used for metabolic processes or lost as heat. This energy loss is why food chains usually have no more than four trophic levels.

Explanation:

Energy is passed up a food chain or web from lower to higher trophic levels. However, generally only about 10 percent of the energy at one level is available to the next level. The other 90 percent of energy is used for metabolic processes or given off to the environment as heat. This loss of energy explains why there are rarely more than four trophic levels in a food chain or web.

Answer:

Waxing and waning moons appear to face different directions.

Answer:

the difference between waxing and waning is.

Explanation:

waxing is when the moon goes from new to crescent, first quarter and so on. waning is when the moon is technically getting smaller. going from full to third quarter second, first, till it gets to cresent moon.

Answer:

the correct option is B: "innate immunity"

Explanation:

The first line of defense comprises the skin, secretions of skin and mucous membranes. These structures are responsible for preventing entry of foreign particles that may cause harm.

The second line of defense consists of an inflammatory response, developing a fever, leukocytes and non-specific antimicrobial proteins.

If the body's first line of defense fails to keep out the pathogen, the second line of defense kicks in to defend the body.

And now the third line of defense, also called 'adaptive immunity', antibodies, lymphocytes and memory cells. These respond in a specific manner to the microbe that has invaded the body.

Hope that answers the question, have a great day!

The first and second lines of defense against microbial invasion are part of innate immunity.

The first and second lines of defense against microbial invasion are part of innate immunity.

The first line of defense includes physical barriers, such as the skin and mucous membranes, which prevent microbial entry.

The second line of defense includes cellular and chemical components, such as phagocytes and inflammation, which work to eliminate microbes that have breached the physical barriers.

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Answer:

O, AB

Explanation:

1) Type O blood is the universal donor.

People with type O- blood are called universal donors because their donated red blood cells have no A, B or Rh antigens and can therefore be safely given to people of any blood group

2) Type AB blood is the universal recipient .

AB positive blood type is known as the “universal recipient” because AB positive patients can receive red blood cells from all blood types.7

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