CAN SOMEONE HELP ME PLZ
Which of these is a characteristic of a parasite?
It is a helpful organism.
It lives inside or on a host.
It makes its own food.
It is always visible to the naked eye.

Answers

Answer 1
The correct answer is it lives inside or on a host.

A is incorrect because a parasite steals from the host, without giving anything in return. Much like a leech

C is incorrect because leeches almost always use their host as a food source

D is incorrect because parasites can often dig beneath the host's skin to be hidden from sight
Answer 2

Answer:

It lives inside or on a host.

Explanation:

BAM!


Related Questions

Next to each gland listed below, write the name of the hormone or hormones it produces.

Answers

Pituitary , FSH, TSH, acth, luteinizing, hormones, growth hormone

Which group is highest in the hierarchy of life and thus includes the other

Answers

The highest ranked category or the highest taxonomic rank of organisms is a domain. Carl Woese designed three-domain system of taxonomy which includes Eukarya, Bacteria and Archea, and they differ in rRNA. The first includes all living organisms that have a nucleus and membrane-bound organelles and multicellular organisms. Other two are prokaryotic microorganisms or single-celled organisms whose cells have no nucleus. 

Each pollen grain contains 2 sperm nuclei one is a _________

Answers

The egg, the polar nuclei

Each pollen grain contains two sperm nuclei. During the process known as double fertilization, one sperm nucleus fertilizes the egg cell to form a diploid zygote, while the other sperm nucleus fuses with the two polar nuclei, forming a triploid cell that develops into the endosperm. This unique event happens in angiosperms and is vital for the development of seeds. The generative cell in the pollen grain divides by mitosis to form these two sperm cells. The pollen tube grows from the germinated pollen and delivers these sperm cells to the ovule in the female gametophyte. There, one sperm fertilizes the egg, and the other fuses with the polar nuclei within the ovule's embryo sac.

Vascular plants have two main organ systems. what are they

Answers

they are cell wall and digestem my dawg
Final answer:

Vascular plants have two main organ systems: the shoot system, which includes stems, leaves, flowers, and fruits for photosynthesis and reproduction; and the root system, which provides support and absorbs water and nutrients.

Explanation:

Vascular plants, also known as tracheophytes, consist of two main organ systems: the shoot system and the root system. The shoot system is responsible for aboveground functions and includes vegetative portions like stems and leaves, as well as reproductive parts such as flowers and fruits. This system is crucial for the process of photosynthesis, as it allows the plant to absorb light. The root system, on the other hand, is mostly underground and provides support for the plant while also absorbing water and minerals.

The two types of vascular tissues are central to these systems. Xylem tissue is dedicated to transporting water and minerals throughout the plant, while phloem tissue carries sugars and proteins. These specialized tissues enable vascular plants to grow tall and thrive on land.

Which of these is a disadvantage of using renewable resources, such as wind energy and sunlight, instead of using renewable resources?
A) Renewable resources are widely available.
B) Renewable resources can be impacted by weather.
C) Renewable resources produce less waste materials.
D) Renewable resources must be imported from other countries.

Answers

Answer:

The Correct Answer is B.

Explanation:

Renewable energy also depends on weather for its sources of power.Hydro generators required rain to fill dams to supply flowing water.It is difficult to produce that much electricity as we can produce by the traditional methods by using fossil fuels.Wind turbines need wind and solar energy need a clear sky and sunny day to collect heat and produce electricity.

Renewable resources can be impacted by weather because it is present in open environment.

Factors affecting renewable energy

Renewable energy technologies are highly dependent on climatic factors such as sunlight, wind speed and water availability. Due to direct interaction with environment, the renewable resources can be affected by weather conditions so we can conclude that renewable resources can be impacted by weather because it is present in open environment.

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Could rna have been the original site of information storage in the primitive cell? a difficult problem with this possibility is that

Answers

Out of the following given choices;

a. RNA is not able to carry information.

 

b. RNA is more complex in structure than DNA.

 

c. RNA would get stuck on the inner surface of the nuclear membrane.

 

d. primitive cells would not let RNA molecules across their membranes.

 

e. no conditions exist that favor production of both the sugar and base parts of an RNA monomer


The answer is E. According to evolution, the best adaptable trait in an environment is highly preserved. The chemical properties of RNA make large RNA molecules inherently fragile, and they can easily be broken down into their constituent. Therefore it is unconvincing that was it was used to store critical genetic information.  






RNA could have been the original site of information storage in primitive cells.

This hypothesis, known as the RNA world hypothesis, suggests that RNA molecules played a crucial role in early life forms by serving as both genetic material and catalysts for biochemical reactions.

RNA is capable of storing genetic information like DNA and can also catalyze chemical reactions like proteins, making it a plausible candidate for the first molecule to carry out these functions in primitive cells.

However, one of the challenges with this possibility is that RNA molecules can be unstable and prone to degradation, raising questions about their ability to persist and function effectively as the sole information storage system in early cells.

According to my _____, we do not have enough fuel to move the rover to the other side of the Martian flat lands.

Answers

heeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

Scientists discovered fossil evidence of mesohippus, an ancestor of the modern horse. Mesohippus lived in North America about 40 million years ago. Mesohippus was about two feet tall, ran on hooves with three toes, and had large, grinding teeth. It is believed that these early horses lived in the thick forests. What may have helped horses change over the last 40 million years?

Answers

B is correct. Here's why:A states that horses were once carnivores. Large, grinding teeth isn't used by meat eaters; those would be sharp, serrated teeth. This is incorrect. C talks about migration from S.A. to N.A., and nowhere in the statements above does it mention South America, so that's incorrect as well (unless you know something I don't)D states that horses share a common ancestor with all mammals. I don't believe the mesohippus was the ancestor of any dolphin species. Hope this helps!

Answer:

Option C

Explanation:

Please see thee attachment

based On the data given, what is the best conclusion to be drawn

Answers

What is the data given? I need a picture or something.
A)Over time, due to evolution by means of natural selection, resistant weeds survived, reproduced, and passed on their herbicide resistant genes.

Which of the following Best describes how the cell formed during mitosis compared to the cells formed during meiosis ?

Answers

Mitosis produces two genetically identical cells, while meiosis produces four genetically different cells.

Daughter cells of mitosis are what you call diploid. They are identical to their parent cells. They have the same number of chromosomes as well. Mitosis produces 2 daughter cells.

On the other hand, the daughter cells of meiosis are called haploid. They are genetically distinct. They have half the number of chromosomes as their parent cells. Meiosis produces 4 daughter cells.

Describe one type of molecular evidence that can be used to determine the genetic relatedness of bacterial strains isolated from naturally occurring populations

Answers

The molecular evidence that can be used to determine the genetic relatedness of bacterial strains isolated from naturally occurring populations may be their genetic similarity which leads to expression of one type of proteins.

Explanation:

The entire life of all organisms depend upon the proteins they produce to carry on their metabolism, this protein is based on the central dogma of life which in  turn depends on the protein script of the organism, thereby a particular organism that lives in a same locality will code for similar types of proteins.

What reflects both genetic and environmental influences?

Answers

an individuals phenotype

The graph below represents the solar intensity measured over one day in northern Canada. What is the most likely date?


March 21
June 21
September 23
December 21

Answers

It is important to note that the graph has 0 solar intensity for a long part of the day; around 16 hours. Only from 8 to 16 hours do we have significant sunlight.
This means that the length of day is very short during this time of the year;

The length of the day changes throughout they year; day is equal to night (12 hours each) during the solstices on March 21 and September 23 but during summer day is longer than night in the northern hemisphere; during winter it is smaller. THe smallest daylength is at December 21st (in the northern Hemisphere). This phenomenon is due to the tilt of the axis of the earth.

The correct answer is December 21; (if we talked about a place in the southern hemisphere, the answer would be March 21).
Final answer:

The most likely date represented by a solar intensity peak on the graph for northern Canada would represent the summer solstice, which is on June 21. That's when the sun is highest in the sky, leading to the highest solar intensity.

Explanation:

To determine the most likely date depicted in the solar intensity graph for northern Canada, we need to understand how solar intensity varies throughout the year. Solar intensity often refers to the amount of solar radiation received, which depends on the time of year. On June 21, the summer solstice, the sun is highest in the sky and the day is the longest. Consequently, this is when solar intensity is at its highest because the sun's rays have the shortest distance to travel through Earth's atmosphere. Therefore, the most likely date represented by the graph would be June 21 if the measured solar intensity is at its highest value.


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Which colors would be most useful for driving photosynthesis and which would be least useful?

Answers

Photosynthesis is a process when plants use light energy to make sugar. The process begins with the absorption of light by pigments. Light is an energy that travelling in waves. In other words, light is an electromagnetic radiation. Electromagnetic radiation together with other types of radiation makes an electromagnetic spectrum. Human eyes cannot see all of the spectra. What can we see is called visible spectrum. Sun lights appear to be white; in reality, it contains multiple colors of light. When white light passes through a prism we can see colors. Indeed, the different wavelengths of light have different dispersions. Red light has the longest wavelength and the least energy, while violet light has the shortest wavelength and the most energy. Those colors are the most effective in the photosynthesis process because of absorption. Green is not absorbed but is reflected and that is the reason that most plants have a green color. Due to this, green is the least effective

in which part of the body would melanoma develop?

lungs

skin

lymph nodes

reproductive cells

Answers

is it for edenuity??

Answer:

-Skin.

Explanation:

Melanoma can be defined as a type of skin cancer, which develops in pigment cells or melanocytes.

The main cause for melanoma is exposure to sun that leads to DNA damage and development of cancerous cells. People having more than fifty moles have higher chances of having melanoma as moles can transformed into malignant tumors.

Thus, the correct answer is 'skin.'

Which of the following is a disadvantage of burning solid waste

Answers

When waste is burned, it releases fumes into the atmosphere which can either trigger diseases like asthma or it can add to the greenhouse effect. It will cause an increase in CO2 in the air. This causes the air to be unbalanced and produce pollution.

When an animal loses a lot of blood, what do baroreceptors tend to signal to the animal?

Answers

The correct answer is thirst.

Baroreceptors are specialized neurons located within the walls of our blood vessels and are responsible for monitoring any changes in our blood pressure. If any change in our blood pressure is detected, then the baroreceptors send signals to the medulla oblongata to regulate the blood pressure.  When an animal loses a lot of blood, then it could be suffering from hypovolemia, which is the term referring to the dangerous decrease in blood volume. This could cause an intense sense of thirst.

The centrosome and centrioles are crucial for the process of cell division in animal cells. During cell division, two centrioles come together with some other special proteins and form the centrosome. As mitosis progresses and chromosomes line up at the equator of the cell, the centrosomes are responsible for what occurrence in the dividing cell? A) They help the cell's nucleus replicate DNA. B) They are responsible for pinching the single nucleus into two at the end of mitosis. C) They are responsible for the production of the proteins that reform the nuclear membrane. Eliminate D) They produce microtubules that attach themselves to the chromosomes and aid in separating them.

Answers

The answer is D. The centrioles form spindle fibers/microtubules that attack to chromosomes. During Anaphase, the spindle fibers/microtubules pull the chromosomes apart into chromatids and brings them to one side of the cell.

Answer:The answer is D) They produce microtubules that attach themselves to the chromosomes and aid in separating them.

Explanation:

Which of the following is not one of the classic symptoms of diabetes

Answers

Answer:

Diabetes:

"It is a disorder which is caused by imbalance level of glucose in blood of any person, either it will be in increased form or the glucose level will drop further down causing various disorders inside the human body."

Explanation:

Presence of ketones in the urine:

As this symptom of diabetes was not discovered before. As they elements are formed inside the liver, and are in the form of fats. Now, liver will change the fatty molecule inside it into ketones for the sake of leveling the glucose level, as by producing enough insulin inside the blood.

2. Blurred Vision:

For, a long time no one knew that diabetes can lead a person to loss or weakness in the sense of vision, which they found out recently but doing research work on human body.

3.Weight loss and gain:

Loss in weight or gain in weight was not really associated to the diabetes before but again after research people found out that it can be a cause due to disorder in imbalance in level of sugar. As some time it increase or while some time it decrease(diabetes).

4.Nausea

An abnormal condition of the affected person which is characterized by the action of vomiting and along with feeling of having a bad stomach is also due to the diabetes.

Ribosomes create, or synthesize, proteins through the use of DNA and RNA. Which of these is a step in protein synthesis?

Answers

Final answer:

In protein synthesis, DNA is transcribed into mRNA which then travels to ribosomes. Ribosomes read the genetic instructions on the mRNA and translate them into a specific sequence of amino acids to form a protein, a process assisted by tRNA.

Explanation:

In the context of protein synthesis, a crucial step involves the functioning of ribosomes which are complex entities consisting of protein and RNA, functioning in the translation phase. Ribosomes read the genetic information given by the sequence of nitrogenous bases in the messenger RNA (mRNA), which is transcribed from DNA in the nucleus of the cell. The genetic code on mRNA gets translated into a specific sequence of amino acids in a protein, with the help of transfer RNA (tRNA), forming polypeptides. Errors in this process can lead to incorrect or dysfunctional proteins. In summary, the primary step in protein synthesis is transcription of DNA to mRNA, then comes the translation of mRNA to a sequence of amino acids to form a protein, all under the control of ribosomes.

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ATGAAAGCCTATGCACCA What does this sequence provide coding for?

Answers

ATGAAAGCCTATGCACCA  stands for "Proteins"

Of the components that make up one's total energy expenditure, which is controlled by the person?

Answers

Total daily energy expenditure (TDEE) represents calories burned vs calories consumed or the total number of calories you burn for energy each day. It consists of three main components:

1. Resting metabolic rate (RMR) or Basal metabolic rate (BMR)- It is the energy which is associated with the maintenance of major body functions.

2. The thermic effect of activity (TEA) or Activity thermogenesis- It is the energy expenditure due to physical work, muscular activity or physical exercise and it is controlled by a person.

3. The thermic effect of feeding (TEF) or Thermogenic foods-It is the energy expenditure after several meals and it refers to calories used to digest different kind of foods you eat.

Plants transfer carbon in the carbon cycle
A. through assimilation of carbon from the soil.
B. through fixation of carbon in the soil
C. when carbon transpires from their stomatae
D. when they are eaten by animals.

Answers

 The correct answer is D. when they are eaten by animals.
 Carbon cycle includes movement of CO2 from the atmosphere, through various organisms, then back into the atmosphere again. Plants (or algae or bacteria) use atmospheric CO2 from the atmosphere, to generate oxygen through the process of photosynthesis. The carbon then becomes part of molecules like proteins, fats and carbohydrates. Passing carbon from one organism to the next occurs when an animal eats a plant or when microorganisms and some animals feed on waste material from animals or dead animals and plants (detritus feeders). CO2 gets back to the atmosphere by respiration of animals, plants, algae and microorganisms. It can also be released into the atmosphere when fossil fuels are burned.

Answer:

the answer is D

Explanation:

Because when they are eaten their left over air goes into the other animals.

true or false: the only predictable thing about a drug is that it will make you sick.

Answers

 the only predictable thing about a drug is that it will make you sick. 
- false

i think it is false

                                                          

What are the functional cells of the humoral immune system that mature into immunoglobulins?

Answers

B cells are the functional cells of the humoral immune system that mature into immunoglobulins. B cells are type of white blood cells and they develop from stem cells in the bone marrow. Many B cells mature into plasma cells that produce immunoglobulins (proteins) needed to fight off infections while other B cells mature into memory B cells.







Explain the characteristics of Archaebacteria?

Answers

It has a cell wall with branched lipids that helps them tolerate adverse conditions.
It’s basically a cell wall but more protective and does way more

A volcanic eruption adds carbon dioxide to the air. This is an example of interactions between the

1)

hydrosphere and geosphere


2)

atmosphere and geosphere


3)

geosphere and biosphere


4)

hydrosphere and biosphere

Answers

It's an intersection of (2)atmosphere and geosphere.
The right answer would be number 2

As the individual body size of an organism increases, the population density for this organism in a given habitat tends to

Answers

As the individual body size of an organism increases, the population density for this organism in a given habitat tends to decrease.

  It has been shown that an inverse relationship between the size of an animal and its local abundance exist. Animals with larger body size have higher energetic requirements, resource exploitation, and susceptibility to predation and thus the competition is bigger. Yet, the density–body size relation depends on the physical complexity of the habitat and population of a species.

Is it normal or abnormal to have respiratory depression after a bronchoscopy hurst review?

Answers

ABNORMAL - Respiratory depression is never normal after a procedure.  They will use a local anesthetic to decrease the gag reflex, but this should not affect the respiratory drive.  Respiratory depression should be addressed immediately.

"Respiratory depression following a bronchoscopy is generally considered abnormal, as it is a potential complication rather than a typical outcome of the procedure.

Bronchoscopy is a diagnostic procedure that allows a doctor to examine the airways of the lungs. It is performed by inserting a bronchoscope, a thin tube with a light and a camera on the end, through the nose or mouth and into the lungs. The procedure can be uncomfortable, and sedatives or anesthetics are often used to reduce discomfort and relax the patient.

 While some temporary changes in respiratory function are expected due to the nature of the procedure and the effects of sedation, significant respiratory depression is not a standard outcome. Respiratory depression is a serious condition characterized by slow and ineffective breathing, which can lead to an insufficient supply of oxygen to the body's tissues and an elevated level of carbon dioxide in the blood.

 The causes of respiratory depression after bronchoscopy can include:

1. Over-sedation: Excessive administration of sedatives can lead to respiratory depression.

2. Reaction to anesthesia: Some patients may have an adverse reaction to the anesthetic agents used during the procedure.

3. Laryngospasm: This is a reflexive spasm of the vocal cords, which can cause difficulty breathing.

4. Bronchospasm: Similar to laryngospasm, this is a constriction of the airways in the lungs, which can also lead to breathing difficulties.

5. Pneumothorax: This is a rare complication where air gets into the space between the lung and the chest wall, potentially causing the lung to collapse.

6. Infection: Although rare, an infection introduced during the procedure could potentially lead to respiratory compromise.

 Healthcare providers monitor patients closely during and after bronchoscopy to detect and manage any complications, including respiratory depression. If respiratory depression is observed, it is addressed immediately with appropriate medical interventions, which may include supplemental oxygen, reversal agents for sedatives, or ventilatory support

In summary, while some degree of altered respiratory function can be expected following a bronchoscopy due to sedation and the procedure itself, significant respiratory depression is considered abnormal and requires prompt medical attention."

____ is a group of cells that work together to perform a specific function? Need answer asap

Answers

Tissue is a group of cells that work together to perform a specific function.
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