Based on your knowledge of the cell structures of living things, what is one reason viruses are not considered alive?
A.They lack cell walls
B.they lack nuclei
C.they lack chroroplast
D.they lack cell membranes​

Answers

Answer 1

Answer:

What does it mean to be 'alive'? At a basic level, viruses are proteins and genetic material that survive and replicate within their environment, inside another life form. In the absence of their host, viruses are unable to replicate and many are unable to survive for long in the extracellular environment.

Answer 2

Answer:

B

Explanation:

The nuclei is basically like the heart of a cell.


Related Questions

Which three structures are found in both prokaryotic and eukaryotic cells?

A. cytoplasm, endoplasmic reticulum, DNA
B. ribosomes, DNA, cytoplasm
C. nucleus, cell wall, cell membrane
D. cell membrane, endoplasmic reticulum, ribosomes

Answers

The answer is B. Prokaryotes do not have endoplasmic reticulum, cell wall, cell membrane or a nucleus. But they do have DNA (just not in a membrane bound nucleus), ribosomes, and cytoplasm.

The potential difference across a piece of wire is 2.1V
The current in the wire is 0.30A
Calculate the resistance of the wire
Write any equation that you use

Answers

Answer:

Given: V=2.1 I = 0.30 A

Using V=IR

2.1 = 0.30 R

2.1/0.30 =R

R= 7 Ohm

What do organisms do with the products of cellular respiration?

Answers

Explanation:

it combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life sustaining activities and discarding

what starting materials do cells need for cellular respiration

Answers

Answer:

Oxygen and glucose

Explanation:

both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.

How waste is removed from plant body ?

Answers

Answer:

Living organisms sustain life, based on certain life processes. These life processes help to regulate their daily activities. Excretion is one among them. The metabolism takes place in the cells of living organisms resulting in both useful and toxic products. The accumulation of toxins may harm the organism. Thus, the living organisms remove all these metabolic wastes from their body and this process is called excretion. Different organisms follow different modes of excretion. Let’s have a glance at excretion in plants and how excretion in plants is different from that of animals.

Explanation:

I hope you can help buddy (:

Answer:

the excretory organ removes these westes.

this process of removal of metabolic waste from the body is known as excretion

Under dehydration circumstances in the winter, stomata may close to reduce water loss for the tree. Predict what would result from the closing of stomata. es ) A This would provide more water, increasing photosynthesis. B) This would also stop gas exchange and further limit photosynthesis. This would trap the oxygen produced in photosynthesis and kill the plant. D) This would help the needles gather more sunlight energy, increasing photosynthesis. Energy Transfer​

Answers

Answer:this would also stop gas exchange and further limit photosynthesis

Explanation: did this on USA test prep and got it right

This would also stop gas exchange and further limit photosynthesis. Therefore, option B is correct.

What is the mechanism of opening and closing of stomata?

The content of cell sap is reduced as a result of the conversion of the organic acids into starch. This causes water to exit hard cells, and a decline in their turgor causes the stomata to close. Stomata therefore open throughout the day and close at night.

The pH of the guard cells controls stomatal opening, according to the starch sugar interconversion theory of stomatal opening. In neutral or alkaline pH, stomata open. When the guard cells are open during the day and closed at night, they contain starch during the day.

Under dehydration circumstances in the winter, stomata may close to reduce water loss for the tree. This would also stop gas exchange and further limit photosynthesis. Therefore, option B is correct.

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Which of the following statements is true about body system interactions?

a. When someone drinks fluids, these fluids are absorbed into the blood stream (cardiovascular system) from the small intestines (digestive system).
b. When someone drinks fluids, the kidneys (urinary system) sends a message to the brain (nervous system) that more water needs to be released from the body.

c. When someone drinks fluids, these fluids are absorbed into the kidneys (urinary system) from the stomach (digestive system).
d. When someone drinks fluids, these fluids are transported directly to the kidneys (urinary system) by the blood stream (cardiovascular system) and go nowhere else in the body.

Answers

Answer:

true

false

true

true

hhhh

Which statement accurately describes dark matter?
It is the same as dark energy.
It is well understood by scientists.
It does not emit electromagnetic radiation.
O It can be observed by shifts in red and blue light.

Answers

The third one, it can be observed by shifts in red and blue light

Answer:

3rd one because it is right bule amd red

How does the mass of an object hitting you affect the force you feel on the hit? Provide evidence from your life.​

Answers

Answer:

Momentum is a concept or law that says if you ad speed or mass or both to a given object, the force you receive will be greater. so if a basball, say is coming at you you could easily catch it. But if a bowling ball was coming at you the same speed it would probably nock your head off.

Explanation:

Here is your equation for momentum

P=v*m

where P is momentum, V is velocity and M is mass.

3. The doctor tests the patient's field of view with an astigmatism chart and finds that the patient states that there are blind spots and distorted lines in both eyes he never noticed before. These blinds spots and distortions remain constant. What structure within the eye could cause these distortions? How can you verify your suspicion?

Answers

Astigmatism is also a eye condition which is usually evidenced by distorted visions and leading to the creation of an image that is not perfect.

The structure within the eye that would cause the distortions is caused by a deviation in the shape of the lens of the eye or the cornea.

A change that occurs in the shape of the cornea/lens where it is not completely round as it should be usually leads to seeing distorted lines in one's vision and it can occur maybe from birth, even from injury to the eyes.

One can always verify this suspicion by going to seen an optometrist and doing a comprehensive eye examination to verify the condition. The condition is also treatable.

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Which organ system is used for smelling

Answers

olfactory system, the bodily structures that serve the sense of smell. The system consists of the nose and the nasal cavities, which in their upper parts support the olfactory mucous membrane for the perception of smell and in their lower parts act as respiratory passages.
olfactory system, the bodily structures that serve the sense of smell.

HOPE THIS HELPS!!! ;)

The movement of small organic molecules, electrolytes, vitamins, and water across the digestive epithelium and into the intestinal fluid of the digestive tract is called what then? I can understand if going into the interstitial fluid of the digestive tract that it would be called Absorption; however, what is it called when it moves into the intestinal fluid of the digestive tract?

Answers

Answer:

As you have learned, the process of mechanical digestion is relatively simple. It involves the physical breakdown of food but does not alter its chemical makeup. Chemical digestion, on the other hand, is a complex process that reduces food into its chemical building blocks, which are then absorbed to nourish the cells of the body. In this section, you will look more closely at the processes of chemical digestion and absorption.

This diagram identifies the functions of mechanical and chemical digestion and absorption at each organ. Next to each organ, a callout identifies which steps of digestion take place in that particular organ.

Explanation:

Which is NOT
involved with an
inflammatory
response?
A. fever - increased temperature
B. slowed blood flow
C. white blood cells move to the area of infection
D. inflammation in area

Answers

Out of the given answers B. slowed blood flow is not involved with an inflammatory response.

During an inflammatory response, several physiological changes occur in the body to combat infection or injury. Let's briefly discuss the other options to understand their involvement in the inflammatory response:

A. Fever - increased temperature: Fever is a common feature of an inflammatory response. It is caused by the release of certain chemicals called pyrogens that act on the hypothalamus in the brain, raising the body's temperature. The increased temperature helps to enhance the immune response and inhibit the growth of certain pathogens.

C. White blood cells move to the area of infection: Inflammation triggers the recruitment of white blood cells, such as neutrophils and macrophages, to the site of infection or injury. These immune cells play a crucial role in identifying and eliminating pathogens, as well as removing damaged tissue and promoting tissue repair.

D. Inflammation in the area: Inflammation is a hallmark of the inflammatory response. It involves localized redness, swelling, heat, and pain at the site of infection or injury. Inflammation helps to isolate the area, prevent the spread of infection, and promote healing.

B. Slowed blood flow: Slowed blood flow is not a characteristic of the inflammatory response. On the contrary, inflammation often leads to increased blood flow in the affected area, resulting in redness and heat. The increased blood flow facilitates the delivery of immune cells, oxygen, and nutrients to the site, aiding in the immune response and tissue repair.

In conclusion, slowed blood flow is not involved in the inflammatory response, while the other options (fever, white blood cell recruitment, and inflammation) are key components of the inflammatory process. Therefore, the correct answer is B.

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Which description is not a property of an acid?

Sour taste
Slimy Feel
dissolve metals
corrosive

brainliest will be possible

Answers

The correct option is C. Slimy feel

When you eat a lemon, you can taste the sourness.

When you have rust, you can acidicly burn it off.

And acid is obviously corrosive, which leaves C- which we know is not a property of acid.

I hope this helps!

Answer:

slimy feel

Explanation:

mention 2 references for Baltimore classification of viruses ​

Answers

Answer:

Baltimore classification is a system used to classify viruses based on their manner of messenger RNA (mRNA) synthesis. By organizing viruses based on their manner of mRNA production, it is possible to study viruses that behave similarly as a distinct group.

Answer:  

Baltimore classification is a system used to classify viruses based on their manner of messenger RNA (mRNA) synthesis. By organizing viruses based on their manner of mRNA production, it is possible to study viruses that behave similarly as a distinct group. Seven Baltimore groups are described that take into consideration whether the viral genome is made of deoxyribonucleic acid (DNA) or ribonucleic acid (RNA), whether the genome is single- or double-stranded, and whether the sense of a single-stranded RNA genome is positive or negative.

Explanation:

How can fat loss and cellular respiration help if you eat more than 6-9 teaspoons of sugar a day?

Answers

Answer:

For those who eat a well-balanced diet and have no metabolic disorders, excess dietary carbohydrates are converted by the liver into complex chains of glucose called glycogen. Glycogen is stored in liver and muscle cells and is a secondary source of energy to freely circulating blood glucose.

if bird cannot migrate what it does to survive

Answers

If a bird can not migrate, it must adapt to thrive on foods that are available in different seasons.

Punnet Squares

A couple have 4 children, their first child has blood type A. the second child has blood type O. The third child has blood type AB, and the fourth has blood type B. What are the genotypes of the parents?

Answers

Answer:

a and ab blood types

Explanation:

how do i write an email to apply for university

Answers

Answer:

Well personally I haven't written an email to apply for a university but i'll try to help.

Composing your Email

1. Find your admissions officer

If possible, locate the email of the admissions officer for your region. For example, if you live in Florida, you want to target the email to the admissions officer that reads for the Southeast. It is important to locate the admissions officer for your region since they will be the person reading your college application when you submit it. They should be familiar with your name and remember you positively.

2. Address the admissions officer properly

Begin your email by addressing the admissions officer in a kind, proper manner. Don’t use slang or abbreviations that you might use with your peers while texting. Your writing should highlight your maturity and ability to communicate in a professional setting.  

“Good morning, Ms. Smith,”

“Hello, Mr. Johnson,”

3. Introduce yourself

Admissions officers receive hundreds of emails a day from prospective students so a concise email that simply gets to the point saves time and energy. Therefore, you shouldn’t spend a great deal of time introducing yourself. You are unlikely to increase your probability of acceptance by sending an email detailing your life’s accomplishments. Instead, write a brief sentence or two, providing your name and any relevant background information that may inform their answer.

“My name is Hayley Hall and I am applying to Pomona College in the Fall of 2020. I am particularly interested in majoring in Engineering.”

4. Be specific

Once you have provided your name and relevant information, ask specific questions. Don’t ask generic questions you should already know the answer to from your college search.

Avoid questions like:

“What’s the acceptance rate for UCLA?”

“What does Yale look for?”

“How much does each credit hour cost for in-state students?”

Colleges provide lots of general information about the school on their website. Search their website thoroughly before reaching out. If you ask for information that the college already provides, it might signal to an admissions officer that you haven’t done your due diligence looking for information on your own.

Instead, ask more detailed questions like:

“What types of companies does the College of Engineering have partnerships with?”

“When do most students start performing research?”  

“What would you say students are most excited about on campus?”

These kinds of questions prove that you have done your research but want more in-depth information about their university. Your curiosity will bode well with an admission officer. It will signal you are seriously considering their university. Their answers will help you make informed decisions about the schools you are considering and potentially provide information for your “Why This College” essay!

5. Do not be afraid to ask questions about your required materials

You can also email admissions officers to confirm they have received all of your materials. For example, if you have sent in your SAT/ACT scores but haven’t received a confirmation email from the school that they received it, you can follow up with the school. The email should be detailed, concise, and professional.

what is the antilog calculation for a measurement of 3.85cm

Answers

Answer:

bbbbbbbbb

Explanation:

hggggggg

If the original DNA is ATGGGTCTAGCGAAAGAT

Than what would be the complimentary DNA?

Answers

Answer:

TACCCAGCGCTTTCTA

Explanation:

Belinda is weighing pine cones she found on a walk. there are 5 pine cones she measured the following masses in grams 5, 9, 8, 19, 9 what is the mode mass

A. 14

B. 10

C. 9

D. 8 ​

Answers

B is the answer because 5+9+8+19+9 than divided by 5 is 10

the heart is an organ made from​

Answers

Your heart is an organ that's largely made up of muscle. It has the vital function of working to pump blood to the organs and tissues of your body.

Describe the circulation away from the Celiac trunk in the abdomen. What do the branches of the Celiac trunk supply?

Answers

Answer:

.

Explanation:

.

put the microscope on the table with the arm towards you.​

Answers

Answer:

Gently place the microscope on the lab table with the arm facing you. The microscope's base should be resting evenly on the table, approximately 10 cm from the table's edge. 3. Raise the body tube by turning the coarse adjustment knob until the objective lens is about 2 cm above the opening of the stage.

Which is the difference between monocots and dicots?

A.
How leaves are grouped on the stalk.

B.
Whether there are two genders or only one.

C.
Whether the stem divides or grows straight up.

D.
How the vascular tunnels are grouped.

Answers

Answer:

D

Explanation:

Answer:

A. The difference between monocotyledons and dicotyledons differ in their roots, stem, leaves, flowers, and seeds

B. there are two gender which is male and female

C. stems, whether above or below ground, are characterized by the presence of nodes and internodes (Figure 1). Nodes are points of attachment for leaves, aerial roots, and flowers. The stem region between two nodes is called an internode

D. Vascular tunnel creation to improve the efficacy of decompressive craniotomy in post-traumatic cerebral edema and ischemic stroke

why the number of ATP is not known exactly

Answers

Answer:

due to the variability of the flow of protons and electrons through the ATPase

Explanation:

The total number of ATP is not known exactly and is due to variance in the degree of coupling between the flow of protons through the ATPase and electron transport. ATP – Adenosine triphosphate, the energy currency of the cell is organic compound composed of the phosphate groups, adenine, and sugar ribose.

does the digestive system functions well if the small intestine is being removed?​

Answers

Answer:

Its hard to live without the small intestine

Explanation:

Most species of animals do not
drink milk once they have
reached adulthood. Which of
these is an animal that DOES
continue to drink milk into
adulthood?
A. humans
B. snakes
C. spiders

Answers

your answer will be C. spiders

Answer:

if we don't know anything about animals we can say that snakes and spiders complete itself development in an egg.the possible answer is A

What happens in your body if you are exposed to a virus for which you have
been vaccinated?
A. The altered virus recognizes the natural version of the virus and
destroys it.

B. Because the vaccination remains in your body, the altered virus outcompetes the natural version and you do not get sick.

C. The nonspecific immune response recognizes the invading virus and prevents it from entering the body.

D. Memory cells that develop in response to the vaccine recognize
the invading virus and respond quickly to destroy it.

Answers

Answer:

Explanation:   A

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Find the cardinal number of the set: C={1/x x is an integer that's greater than or equal to 4 and less than or equal to 9}. Please help me!!! It would really help On diesel engines, data from ________ sensors are commonly used to adjust exhaust gas recirculation (EGR) rates. What is the major consideration in setting the lower limit of cell size?A. The cell size must be small as to fit all the processes and structures to support life.B. The cell must be large enough to fight the pathogens.C. The cell must be large enough to attach to a substrate.D. The lower limit should be small enough for the cell to move in the fluid efficiently. Write the equation of the line in Point-Slope Form given the information below.Slope=7Point=(1,4) please help with this Assume that a set of test scores is normally distributed with a mean of 80 and a standard deviation of 10.Use the 68-95-99.7 rule to find the following quantities.a. The percentage of scores less than 80 is _%. Can somebody answer this? please someone help. I really need help with this question. I will give brainliest Which geographical feature is found in the middle east? Which of the following offers the best reason to include a footnote or endnote in your paper?-after a weak paragraph, to make the paper look more professional-in place of a parenthetical citation, to cite a source-to give extensive additional information on a detail or a quote-to present humorous asides about the information 1 sentence using had to oletha rapples from the top of a cliff at a rate of -6 inches per second. It takes oletha 4 minutes to reach the bottom of the cliff. What is the height of the cliff in feet? Help plzzz is my last chance. Identify the error in the following sentence and the best way to fix it. After eating three cheeseburgers and taking a long nap, woke up with a ton of energy A. It is a run-on sentence and needs a period or semicolon.B. It has a comma splice and needs a conjunction.C. It is a fragment and needs a subject. D. It is a fragment and needs a verb. which theory best explains the occurrence of afterimages a soccer ball is kicked at an angle of 35 and it lands on even ground. A) What angle will produce the same range? B) Which angle of the two will produce the highest ball? C) Which angle of the two will produce the ball that is in the air the longest? D) What angle in this situation would produce the furthest range? During which phase(s) of mitosis are structures like the one shown in Figure 102 visible? Part A: Rhett made $250 washing cars with his mobile car wash company. He charges $70 per car and earned $50 in tips. Write an equation to represent this situation. (4 points)Part B: Scarlett made a profit of $250.00 with her mobile car wash company. She charged $75.00 per car wash and received $35.00 in tips, but also had to pay $5.00 in cleaning supplies per car wash. Write an equation to represent this situation. (4 points)Part C: Explain how the equations from Part A and Part B differ. (2 points) 1. Il __ (russir) son examen. 2. Vous __ (finir) vos devoirs? 3. Lundi prochain nous __ (finir) le livre. 4. Les enfants __ (grandir) trs vite (fast). 5. Vous __ (choisir) le fromage? 6. Ils n __ (obir) pas leur parents. 7. Je __ (rflchir) beaucoup ce problme. Why does the author present Redis experiments first, followed by Pasteurs experiments?A. Redis experiments were more important than Pasteurs.B. The author wanted to present the experiments in historical sequence.C. Redis experiments completely changed the belief in spontaneous generation.D.The author wanted to focus on the maggots that were found in the rotted meat.