Microbial endosymbionts a. are relatively rare. b.are found in a few ecosystems. c. provide nutrition to host animals, including humans. Od. are only found in animals

Answer:

True

Explanation:

Assuming this is a true or false question, your best answer should be true. There is other equipment that may be needed, for example, a safety shower (used when someone comes into contact with hazardous chemicals), but everything listed on the question is correct.

Answer:

Drugs/alcohol/tobacco

Explanation:

environment

hormones

diseases

Drugs ,alcohol and tobacco could influence the development of human offspring apart from genetics.

How does alcohol and smoking affect fertility?

Alcohol consumption resulted in significant increases in morphologically abnormal nuclei and plasma membranes. Heavy smoking was associated with decreased sperm counts and alcohol consumption was associated with increased numbers of morphologically abnormal sperm.

What are the effects of drugs alcohol and tobacco on an unborn baby?

The effect could be premature birth, low birth weight, miscarriage and cot death. Breathing problems and wheezing in the first six months of life.

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Answer:

BEEP BEEP IAM A SHEEPI SAId BEEP BEEP IAM A SHEEPExplanation:

Answer:

\(\boxed{\text{\sf \Large ion}}\)

Explanation:

An ion is an electrically charged atom or group of atoms formed by the loss or gain of electrons.

The CFTR (cystic fibrosis transmembrane conductance regulator) channel's active anion is chloride (Cl-). A transmembrane protein called CFTR crosses the plasma membrane of epithelial cells of the pancreas, lungs, and other organs.

The CFTR channel controls the flow of chloride ions across the membrane in healthy cells, aiding in the correct hydration of the tissues in the immediate vicinity. Mutations in the CFTR gene result in the channel's failure in cystic fibrosis sufferers, which causes the accumulation of thick, sticky mucus in the respiratory tract and other organs.

Inflammation, persistent infections, and other problems might result from this. Chloride ions are transported from inside to outside of lung cells by the CFTR ion channel.

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The antagonist is the quadriceps. The quadriceps contract to extend the knee during the contact and recovery phase, while the hamstrings lengthen to allow movement.

Is the hamstring stretch antagonistic or agonistic?

When the knee extends, the hamstrings stretch, as well as the antagonists of this activity. When the knee bends, the hamstrings become the agonist muscle, and the quadriceps now become the antagonist.

The three hamstring muscles are as follows: Biceps femoris, located on the outside of your body. This hamstring's function is to flex your knee, extend your thigh at your hip, and rotate your lower leg from side to side when your knee is bent.

Therefore, In complex movements, muscles that are antagonists to the hamstrings are the quadriceps.

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Answer:

Neurons

Explanation:

Answer:

experiment; observation

Answer:

Wavelength of the wave is \(1.7\) meter

Explanation:

As we know that

\(c = \lambda *v\)

C is the speed of light

\(\lambda\) is the wavelength of light

v is the frequency of the light

Substituting the given values in above equation, we get -

\(680 = \lambda * 400\)

\(\lambda = \frac{680}{400}\\ \lambda = 1.7\) m

The current that goes through a 2070 W kettle connected to a 230 V mains supply is 9A.

Current is the time rate of flow of electric charge. It is measured in amperes (A).

Current of an electrical charge can be calculated using the following formula:

I = P/V

Where;

According to this question, a 2070 W kettle is connected to a 230 V mains supply. The current is calculated as follows:

I = 2070 ÷ 230

I = 9A

Therefore, the current that goes through a 2070 W kettle connected to a 230 V mains supply is 9A.

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Answer:

the answer would be thermal pollution

The organism that would have the greatest amount of energy stored is the protozoa.

The organisms at the bottom of the food web (producers) typically have the greatest energy input, as they are the primary source of energy in the ecosystem. They capture the energy from the sun and convert it into organic compounds.

They may not have the greatest biomass or individual energy content compared to higher trophic levels.

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Answer: Digestive processes

Digestive Processes. The processes of digestion include six activities: ingestion, propulsion, mechanical or physical digestion, chemical digestion, absorption, and defecation. The first of these processes, ingestion, refers to the entry of food into the alimentary canal through the mouth.

Explanation:

Answer:

Salivary glands.

Pharynx.

Esophagus.

Stomach.

Small Intestine.

Large Intestine.

Rectum.

Accessory digestive organs: liver, gallbladder, pancreas.

Answer:

This question lacks options, the options are:

A. The DNA sample comes from a bacterium or virus,

B. The DNA sample has been cut into fragments by restriction enzymes.

C. Only a small amount of the DNA sample is available,

D. The DNA sample includes regions that are transcribed into mRNA

The answer is C

Explanation:

Polymerase chain reaction, commonly known as PCR, is a molecular technique used to amplify a DNA sample into producing million copies of it. The PCR was invented by Kary Mullis in 1983 and since then it has been used to multiply DNA sample for use in molecular or forensic studies.

PCR starts with a very minute fragment of DNA sample. Therefore, scientists use the polymerase chain reaction (PCR) before they analyze a DNA sample under the condition that only a small amount of the DNA sample is available.

Explanation:

where were you last night and what we're you wearing

Answer:

It is a lysogenic cycle.

Explanation:

In the lysogenic cycle, the viral DNA gets integrated into the host's DNA (see the picture attached).

Hope this will help :)

The following are the differences of human and frog digestive systems:

1. Humans possess stable teeth which they use for chewing while frogs do not possess stable teeth to grip their prey.

2. Chewing for humans is an automatic digestion while frogs do not chew their prey but swallow it instead.

3. Humans possess only a set of teeth while frogs possess two sets of teeth.

4. Human's tongue is inclined behind the mouth while the frog's tongue is inclined to the opening of the mouth.

5. Humans possess a lengthy small intestine while the frog possess a more concise small intestine.

6. The expulsion of undigested food in human is through the rectum while in frog, it is through the cloaca.

Inhibiting seed germination or reducing germination percentage and delaying germination time in crops are both caused by salinity, a severe stressor.

The five transformations or processes that compose the seed secondary fermentation include ingestion, respiration, the effect of light on germination, the mobilization of reserves throughout germination, the role of organic amendments, and thus the specialization of something like the developmental pole into a plant.

The early design of a seed's transformation into a seedling is called germination. The ideal combination of temperatures, oxygen, and hydration is needed for seeds to germinate. Seeds wait to emerge until the conditions are right for their growth and survival. a process known termed dormancy.

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Epithelium is most likely the cell layer that lines an organ and has one surface exposed to the interior cavity of the organ. In the body, epithelial tissue is typically seen lining hollow tubes and covering organs.

An organ's lining is visible when examined closely because it has multiple layers of cells. Blood arteries are absent from the layers, and one surface of the cells is exposed to the organ's internal cavity. Three different types of epithelial cell layers, known as epithelium, endothelium, and mesothelium, line your internal organs, fill bodily cavities, and make up the top layer of your skin.

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close examination of an organ shows a lining of several layers of cells. the layers do not contain any blood vessels, and one surface of the cells faces the internal cavity of the organ. this tissue is probably ________.

The genetic information that will be transferred to the offspring is carried by the DNA in the nucleus of both the egg and sperm cells.

During human fertilization, the egg and sperm cells unite to form a zygote, which will develop into a new individual. Both the egg and the sperm cell carry genetic information in the form of DNA. In humans, each cell contains 23 pairs of chromosomes, which are long strands of DNA wrapped around proteins. The egg cell contains half of the genetic information needed to create a new individual, while the sperm cell also contains half of the genetic information. When the sperm cell fertilizes the egg cell, its genetic information combines, resulting in a zygote with a complete set of 46 chromosomes. These chromosomes carry the genes that will determine the characteristics and traits of the offspring.

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Answer:

diffusion.

Explanation:

In dialysis, the cleansing wastes from the blood is achieved with the help of dialyzer.

Hemodialysis do the work of our own kidneys in order to clear wastes and extra fluid from your blood. This cleaning of waste material is done to a special filter called a dialyzer or artificial kidney.

Dialysis is a procedure which is used to remove waste products and fluid in excess amount from the blood when the kidneys stop working so we can conclude that dialyzer is the cleaning waste from the blood in the process of dialysis.

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Answer:

The endocrine system is the collection of glands that produce hormones that regulate metabolism, growth and development, tissue function,

reproduction, sleep, and mood, among other things.

Explanation:

Answer:Light reactions -- light energy in the presence of chlorophyll -- splits water. Splitting water into oxygen gas, hydrogen ions and electrons produces the energy for subsequent electron and proton transport and provides the energy to produce the sugars the plant needs. These subsequent reactions form the Calvin cycle.

Explanation:

In the process of photosynthesis light reactions light energy in the presence of chlorophyll splits water.

Photosyntheis is a biochemical reaction that combines chemicals with biological species to produce energy. Atoms of hydrogen bond with carbon to form glucose.

Carbon dioxide and hydrogen are the reactants that are used from the environment by the plants to make energy. Glucose and oxygen are the products. Splitting water into oxygen gas, hydrogen ions and electrons produces the energy for subsequent electron and proton transport and provides the energy to produce the sugars the plant needs.

The hydrogen atoms from the environment are absorbed by the plants and are combined with the carbon dioxide to yield glucose or sugar molecules for energy.

Therefore, In the process of photosynthesis light reactions light energy in the presence of chlorophyll splits water.

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A BBee genotype Labrador will be black in color.

Epistatic genes are genes that can affect the expression of other genes, even those on different chromosomes, by either enhancing or suppressing their expression. They can influence the phenotype of an individual by masking or modifying the effects of other genes.

A Labrador with BBee genotype will be black in color.

This is because BB denotes the dominant black color, and ee denotes the recessive yellow color. Since yellow is recessive epistatic, it will mask both brown and black colors. Therefore, the dog will express the dominant black color even though it carries the recessive yellow allele.

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One similarity between the myths of the hydra and the dragon is that they are both multi-headed creatures that are difficult to defeat.

In the case of the hydra, a serpent-like creature from Greek mythology, it had multiple heads that would grow back when one was cut off. In the case of the dragon, a mythical creature found in many cultures, it is often depicted with multiple heads, such as the Chinese dragon with five or more heads.

Both creatures were often seen as symbols of great power and danger, and their multiple heads added to their mystique and the difficulty in overcoming them.

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I apologize for any confusion, but the terms "sensitivity" and "specificity" are not associated with the online platform Quizlet.

These terms are commonly used in medical and statistical contexts to evaluate the performance of diagnostic or screening tests.

- Sensitivity: Sensitivity measures the ability of a test to correctly identify individuals who have a particular condition or trait.

It calculates the proportion of true positives (individuals with the condition who test positive) out of the total number of individuals with the condition.

- Specificity: Specificity measures the ability of a test to correctly identify individuals who do not have a particular condition or trait.

It calculates the proportion of true negatives (individuals without the condition who test negative) out of the total number of individuals without the condition.

These concepts are used to assess the accuracy and reliability of screening tests in medical practice.

It's important to consult reliable medical sources or consult with a healthcare professional for specific information related to sensitivity, specificity, or any other medical terminology.

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In medicine, sensitivity and specificity are used to measure the accuracy of a diagnostic test. Sensitivity refers to the test's accuracy in identifying those with the disease, while specificity refers to its accuracy in identifying those without the disease.

The sensitivity and specificity refer to the accuracy of a screening test. Sensitivity is the test's ability to correctly identify those with the disease, the probability of a positive result when the patient is indeed infected. In other words, a highly sensitive test has a low chance of giving a false-negative result.

On the other hand, specificity is the test's ability to correctly identify those without the disease, the probability of a negative result when the patient is not infected. A highly specific test has a lower chance of giving a false-positive result.

For example, if a screening test has a 10 percent probability of a Type I error, it means that 10 percent of the time, it will incorrectly detect the disease when it is not present (false positive). If it has a 20 percent probability of a Type II error, it means that 20 percent of the time, it will fail to detect the disease when it is indeed present (false negative).

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The image shows a nucleotide, which is formed by three parts:

a: a phoshate group

b: a sugar

c: a nitrogenous base (A/U, T, C or G)

Answer:

The geographically isolated population will acquire genetic differences that eventually will lead to its speciation

Explanation:

Geographic isolation is a biological process produced by the physical separation between organisms of the same species, which may be caused by different types of geographical barriers such as, among others, mountains, earthquakes, rivers, etc. Geographic Isolation produces genetic differences between the separated groups. Over time, these genetic differences will lead to the reproductive isolation of the new population, thereby leading to the formation of a new species in the course of evolution, in a mechanism referred to as speciation.

Answer:

ginseng rootExplanation:

The toxic substance is often used to extract gold and results in harmful environmental effects is Cyanide.

The toxicity of cyanides and their environmental effect are well established. They are, nevertheless, still utilized in the mining, galvanic, and chemical industries. Cyanides are emitted in various ways to all elements of the environment as a result of industrial activity.

Cyanide can be found in nature as cyanogenic glycosides in plant seeds. Excessive intake might result in negative side effects. However, the most prevalent source of cyanide is environmental tobacco smoke (ETS).

Cyanide may be converted by living organisms into less harmful chemicals that are expelled with physiological fluids. The purpose of this study is to evaluate current understanding on the behavior of cyanide in the environment and its influence on human health and life.

Hydrogen cyanide and cyanides are employed in a variety of sectors, including silver and gold mining. They are also utilized in the plastic manufacture of various colors, as well as in chemical laboratories. Mines, metallurgical industries, and automobile exhaust gas are all causes of pollution in the environment.

Cyanide ions enter the environment mostly through wastewater. These chemicals can also enter the environment as a result of fires in factories and homes, as well as cigarette smoke.

So, the correct option is Cyanide.

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