which of the following organisms do not have cell walls

Answers

Answer 1
Animals, they only have a cell membrane, not cell walls. 
I don't know what the answer choices were, though, but I hope this helps. 
Answer 2
animals - they have a cell membrane  but they do not have a cell walls

Related Questions

___ are capable of differentiation to form specialized cells.
A.Gamete Cells
B.Stem Cells
C.Chromosomes

Answers

Stem cells are cells that are not yet specialized. 

Which mutation in DNA affects the whole DNA sequence after the point mutation?



A.
inversion



B.
frameshift



C.
substitution



D.
translocation


Answers

Would the answer be Translocation for this one?

Answer:

D. translocation    

Explanation:



Select all that apply.

Carbohydrates are found in foods that contain:
starch
protein
amino acids
fats
sugar

Answers

The answers are starch and sugar.

Carbohydrates are commonly known as sugars. They are compounds made of carbon, oxygen, and hydrogen atoms. Starch is a complex carbohydrate. Therefore, carbohydrates are found in foods that contain starch and sugar.

Answer:

The answer is starch and sugar

Explanation:

What is the difference between entomophily and anemophily?

Answers

Entomophily- Pollen is distributed by insects.
Anemophily- Pollen is distributed by wind.
Anemophily or wind pollination is a form of pollination whereby pollen is distributed by wind. Anemophilous plants may be either gymnosperms (non-flowering) or angiosperms (flower-producing). However, flowering anemophilous species do not develop scented flowers, nor do they produce nectar. This distinguishes them from entomophilous and zoophilous species (whose pollen is spread by insects and vertebrates respectively).

In a scientific investigation, the term “quantitative data” refers to numbers that are usually followed by

Answers

It seems that you have missed the given options for this question, but anyway, the correct answer would be UNITS. In a scientific investigation, the term “quantitative data” refers to numbers that are usually followed by units. By definition, quantitative data are the information that is expressed in numerical values. Hope this answer helps.

Answer:

The correct answer are units.

Explanation:

In a scientific investigation, quantitative data signifies towards the numbers, which are usually succeeded by units. Exact quantities are used in quantitative data. The manner in which the researchers and scientists utilize a coordinated approach to answering the queries regarding the world surrounding us is known as a scientific investigation.

Organisms that live in the tundra have developed unique adaptations that aid in their survival. Ursus maritimus has a variety of adaptations which enable it to survive in the tundra. It is the largest terrestrial carnivore, but it is also an excellent swimmer that spends much of its time in and near the water hunting its favorite food. It has large paws with small bumps to provide traction as it walks across the ice. Its fur is helpful as camouflage during the winter months, but not as helpful during the summer. Which organism has the adaptations described that enable it to survive in the tundra?

A. harp seal
B. arctic fox
C. polar bear
D. Kodiak bear

Answers

The organism that has all the adaptations listed above is C. polar bear.
C. Polar bear.just took the test

outline how impulses are transmitted from receptor to effector ...?

Answers

A receptor is a stimuli receiver. It receives an information and sends it through a sensory neuron to the spinal cord, as a part of the central nervous system. So, the spinal cord sends information received from the body to the brain. Further brain sends the processed information back to the spinal cord which relays it out through a motor neuron to the effectors (muscles or glands).

What is the net movement of molecules from high to low concentrations?

Answers

the net movement of molecules from a high concentration to low concentration is best described as simple diffusion
Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration.

suppose a population is carrying a condition controlled by two alleles R (dominant) and r (recessive). if the frequency of the r allele is 15% and the frequency of the R allele is 85%. what will be the frequency of the RR genotype ,assuming evolution is not occuring?

Answers

I believe it's 72.25%

Answer:

Frequency of the RR [tex]= 72.25[/tex]%

Explanation:

Given -

R is the dominant allele and r is the recessive allele.

The frequency of the r allele is [tex]15[/tex]%[tex]= 0.15[/tex]

The frequency of the R allele is [tex]85[/tex]%[tex]= 0.85[/tex]

As per Hardy Weinberg's equation-

[tex]p = 0.85[/tex]

[tex]q = 0.15[/tex]

Also, evolution is not occurring is the basic assumption of Hardy Weinberg's principle.

Frequency of the RR genotype is equal to [tex]p^{2}[/tex]

Substituting the value of "p" we get

[tex]p^{2} = 0.85^{2} \\= 0.7225\\= 72.25[/tex]

Sweating is a process that helps cool the body during strenuous exercise. This is an example of

Answers

This is an example of a FEED BACK MECHANISM. 
Feed back mechanism is the process by which the body responds to a change in the organism system by reacting in the opposite or in the same direction as the change. This is the mean by which the body regulate its internal environment.

Answer:

The answer is 3 if its on ur test

Explanation:

A student sees several ants walking up a wall following the exact same trail that an ant took earlier. She wants to apply the scientific method to determine how the ants detected the trail. Which of these steps would come first in her application of the scientific method?

A.Perform an experiment by cleaning the scent away from part of the trail.

B.Draw a conclusion that the ants follow a scent trail.

C.Make a prediction about what the ants will do after she cleans away part of the trail.

D.Hypothesize that the ants are following a scent trail that the first ant left.

Answers

C. Make a prediction would come first in the scientific method

The answer is C. Make a prediction about what the ants will do after she cleans away the part of the trail. You're welcome :)

The amnion is an extra-embryonic membrane that surrounds the embryo and encases it in amniotic fluid.

Which animal lacks an amnion?
A) frog
B) lizard
C) pigeon

Answers

The frog is the one animal that lacks an amnion. We knwo this because An amnion is only developed in mammals and reptiles but not not amphibians. I hope this is what you need
A is the answer bruh

Helppp pleaseeee !
1. The bodys nonspecific defenses against invading pathogens include ?
A.antibiotics
B.mucus, sweat, and tears
C. antibodies
D. cytotoxic T cells

2. The body's most important nonspecific defense is ?
A. The skin
B. Cell mediated immunity
C. the inflammatory responce
D.permanent immunity

Answers

The answer for the first question is B. mucus sweat and tears, all of those are defenses that the body uses when attacked. Now for the second option is A the answer because the first filter that a virus or a desease must pass is indeed the skin. Hope is good for you 

The most important part of the body that shows non-specific defense against invading pathogens is skin (A). They include sweat, acid, mucus, oil in non-specific defense (B).

Further Explanation:

Skin is the major organ of the body, which has several features that shield the body from infections. Skin plays a very important role in nonspecific defense against pathogens. The skin surface receives the secretions from the sweat glands which contains lysozyme. This enzyme is responsible for digesting the bacterial cell wall. This feature alone does not make the skin barrier to infections. The acidic pH and mucus secretion also contribute to the barrier properties of the skin.

The sweat glands and oils are accountable for the acidic pH of 3-5 of the skin surface. This pH is acidic enough to inhibit the growth of pathogenic microorganisms. The skin surface receives the secretions from the sweat glands which contains lysozyme. This enzyme is responsible for digesting the bacterial cell wall. The mucus that is secreted by the skin is a sticky fluid that is responsible for trapping the microorganisms.

The mucus that is secreted by the skin is a sticky fluid that is responsible for trapping the microorganisms. This is one of the few characteristic features of the skin that is responsible for acting as a barrier to infection.

Learn more:

Learn more about carbohydrate monomer https://brainly.com/question/6947177 Learn more about core muscle stabilization https://brainly.com/question/1231927 Learn more about energy storage https://brainly.com/question/523624

Answer Details:

Grade: High School

Subject: Biology

Topic: Non-Specific Defense

Keywords:

Skin surface, non-specific defense, skin, lysozyme, interferons, complements, trap, Micro-organism, cell wall, sweat gland, oil, surface.

ADP is like a partially charged battery because it...?

Answers

ADP= partially charged battery that can be fully charged by the addition of a phosphate group.

Does the greenhouse effect maintain earth's temperature range

Answers

The "greenhouse effect" is the effect of atmospheric gasses like carbon dioxide absorbing energy from the sun and earth and "trapping" it near the Earth's surface, warming the Earth to a temperature range that is hospitable for life.
yes it does effect maintain earths temperature range

Which is a reason for the rise of nitrate levels in ground water?

Answers

the answer is overuse of fertilizer. hope this helped :)

What is one major difference between sandstone and slitstone

Answers

Siltstone and sandstone are both granular materials but they are distinguished by grain size. The Wentworth scale places silt particles between 0.0039 to 0.0625 mm. This is smaller than very fine grained sand. 

Siltstone and Sandstone may have identical mineralogy. They are generally comprised of quartz, feldspar and rock fragments. Because siltstone is comprised of smaller grains, it has smaller pore throats, resulting in lower permeability and higher capillary pressures than in an equivalent porosity sandstone.

The activity of the kidneys is controlled by hormones and by ?

Answers

the kidneys is controlled by hormones and by the composition of the urine since the hormone released is called ADH which is produced by the pituitary gland.

The activity of the kidneys is controlled by hormones and by pituitary gland.

What is pituitary gland?

Your pituitary gland (also known as hypophysis) is a small, pea-sized gland located at the base of your brain below your hypothalamus.

What are four functions of the pituitary gland?

Through secretion of its hormones, the pituitary gland controls metabolism, growth, sexual maturation, urinary hormones ,reproduction, blood pressure and many other vital physical functions and processes.

To learn more about  pituitary gland, here

https://brainly.com/question/12499901.

#SPJ2

Which of the following best describes the relationship between climate and latitude?

The greater the latitude, the colder the climate.
A latitude of 0o has a climate of extreme temperature ranges.
There is no relationship between latitude and climate.
The lower the latitude, the colder the climate.

Answers

The answer is the first one ~ The greater the latitude the colder the climate.

Answer:

The best answer choice to the question: Which of the following best describes the relationship between climate and latitude, would be: A: The greater the latitude, the colder the climate.

Explanation:

The explanation is best given not with the understanding of latitudes and climate, but rather, the position of the Earth in regards to the Sun, and its movements, that will bring places further away from the equator (latitude 0), closer to the direct rays of the sun, or further away. However, it is also important to know that as locations move away from the equator, towards higher latitudes, meaning, towards the poles, these places will have lower temperatures, than those on the equator, and definitely will have temperature changes, going from high, to low, depending mostly, on Sun exposure, due to the changes in position of Earth. This also explains why places at greater latitudes experience seasons, and not those at the equator.

you can tell that this is an image of a dna nucleotide and not an rna nucleotide because you see a _____.

Answers

I don't know what the picture is but I had a question like this on my packet and I saw a sugar with two, and not three, oxygen atoms
Final answer:

You can identify a DNA nucleotide by the presence of a deoxyribose sugar, instead of ribose, and the presence of the base thymine, instead of uracil like in RNA. The key components of a nucleotide are a nitrogenous base, a pentose sugar, and one or more phosphate groups. DNA and RNA differ in the type of pentose sugar and one of the bases they incorporate.

Explanation:

You can tell that this is an image of a DNA nucleotide, and not an RNA nucleotide, because you see a deoxyribose sugar instead of ribose. Additionally, you can look to see if there is the base thymine present, which is in DNA, instead of uracil, which is in RNA.

Nucleotides are the building blocks of DNA and RNA. Each nucleotide comprises a nitrogenous base, a pentose sugar, and one or more phosphate groups. The carbon residues in the pentose are numbered 1' through 5' (with the prime distinguishing these residues from those in the base, which are numbered without applying a prime notation). The base is affixed to the 1' position of the ribose, and the phosphate to the 5' position. When a polynucleotide forms, like a DNA or RNA molecule, the 5' phosphate of the incoming nucleotide connects to the 3' hydroxyl group at the end of the growing chain.

The critical difference lies in the pentose sugar included in the nucleotide. DNA contains deoxyribose, which is similar in structure to ribose that is found in RNA. However, deoxyribose has an H instead of an OH at the 2' position.

Moreover, DNA nucleotides incorporate the four bases adenine (A), guanine (G), thymine (T), and cytosine (C). In contrast, RNA uses uracil (U) as a substitute for thymine (T). So, if you see a nucleotide with thymine, that is a direct indicator of DNA. By understanding the core differences between DNA and RNA nucleotides one can easily distinguish between them by examining a given image or model.

Learn more about DNA vs RNA here:

https://brainly.com/question/33301756

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What is the probability of an offspring inheriting to the recessive trait if its parents are both heterozygous?

Answers

for this you would use a punnet square (ill try my best to show it while typing)
heterozygous means different, so you have parents with alleles shown as Dr (D=dominate, r= recessive) since they cant have 2 dominate alleles. 


     D     r
D Dr  Dr
r  Dr  rr

to get the recessive trait you must have an allele shown recessive homozygous

since there are only 1 pair shown as rr out of 4 possibilities you'd have 1/4 which is 25%

25%

2. In Africa, Nile crocodiles can often be seen lying in the sun, their jaws held open. Small white egrets perch on the crocodiles’ backs or hop in and out of their mouths. The birds also peck at the crocodile’s teeth, feeding on the scraps of food embedded there. Although crocodiles do eat some birds, they do not eat egrets.

a. What is the term for the relationship between the crocodiles and the egrets?

b. Explain this relationship.

Answers

Based on the given description above, the relationship between the crocodiles and the egrets shows a symbiotic relationship, particularly, COMMENSALISM. This kind of relationship exists when one specie benefits from and the other does not gain nor lose anything. Hope this answer helps.

Answer:

Mutualistic symbiotic relationship

Explanation:

1. The relationship between  egrets and the crocodile is a form of symbiotic relationship that is predominantly mutualistic relationship

2. In a mutualistic symbiotic relationship , two species associate with each other in order to benefit each other. Here egrets feed on food scrap stuck in the teeth of crocodile to feed itself while on the other hand crocodile is also benefited as the waste left out of food stuck in its teeth is cleaned off.

Sunlight is a form of energy called _____.

Answers

Sunlight is a form of energy known as electromagnetic radiation or solar energy, and the portion that humans can see is termed visible light. It travels in waves, measurable by their wavelength.

Sunlight is a form of energy called electromagnetic radiation or solar energy. This solar energy is composed of tiny packets of energy known as photons. While the Sun radiates a vast amount of this energy, the part that humans can see is called visible light. Solar energy travels in waves, which can be measured in terms of their wavelength - the distance between two consecutive points like crest to crest or trough to trough.

The sun is the Earth's primary source of energy and it emits light and heat through a process called nuclear fusion, where hydrogen is converted into helium, releasing vast quantities of energy. This energy travels across space and reaches Earth mostly in the form of visible light, which we can harness and utilize as an energy resource.

Photosynthetic algae create sugars that will eventually be broken down during which process?
1.glycolysis, during respiration
2.the Calvin cycle, during photosynthesis
3.electron transport chain, during respiration
4.the Krebs cycle, during photosynthesis

Answers

The best and most correct answer among the choices provided by your question is the first choice or number 1.

In glycolysis, during respiration, photosynthetic algae create sugars that will eventually be broken down during which process.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

The correct answer is:

glycolysis, during respiration

Photosynthetic algae create sugars that eventually be broken down during : A. Glycolysis, during respiration

During this process, Algae produced 2 ATP and 2 NADH, which is used in forming energy.

Explanation:

The cleavage down of sugars is called glycolysis. The prefix glyco- means sugar, and the suffix -lysis means breaking down. It's part of a three-step method in respiration, the other two is The Krebs Cycle and Electron Transport Phosphorylation. In the manner of glycolysis, 2 ATP and 2 NADH are designed. Glycolysis is the metabolic pathway that transforms glucose C₆H₁₂O₆, into pyruvate, CH₃COCOO− + H⁺. The free energy released in this manner is used to form the high-energy molecules ATP and NADH.

what prefix would you add to lysis to mean separate or split using water?

Answers

I think is electrolysis

To indicate the splitting or separation of a compound using water, the prefix 'hydro-' is added to 'lysis', forming the word 'hydrolysis'. This chemical reaction is crucial in breaking down polymers into their monomeric units.

The prefix you would add to lysis to mean separate or split using water is hydro-. The complete term is hydrolysis, which is a chemical process where water is used to split a substance into smaller molecules. In the context of polymers, hydrolysis plays an essential role by breaking the covalent bonds between monomers, splitting them into smaller units, often through the addition of a hydrogen ion (H+) to one monomer and a hydroxyl group (OH) to the other, effectively dismantling the polymer chain.

The active form of vitamin d is

Answers

(CALCIUM)
regulation in the human body. The role of vitamin D is shown in orange. Vitamin D is carried in the bloodstream to the liver, where it is converted into the prohormone calcifediol. Circulating calcifediol may then be converted into calcitriol, the biologically active form of vitamin D, in the kidneys.

Which path describes the movement of oxygenated blood leaving the heart? Use the standard image of the heart to guide you.

left atrium → left ventricle → aorta

left ventricle → left atrium → pulmonary artery

right atrium → right ventricle → pulmonary artery

right ventricle → right atrium → aorta

Answers

The path which describes the movement of oxygenated blood leaving the heart is left atrium → left ventricle → aorta.
Blood first goes through the left atrium and enters the left ventricle, only to end up in the aorta from which it continues its journey.
Blood enters the heart through the right atrium, but leaves through the left one.

The answer is left atrium - left ventricle - aorta

Its right because I had it in my test and it says t right. Make me a brainlist if u dont mind plz.

What is a force that causes an object to change its shape?

Answers

The answer would be pressure.

Which of the following statements about pesticides is true?

a.
Pesticides provide plants with essential nutrients.
b.
Pesticides prevent the destruction of crops.
c.
Pesticides are never harmful to plants.
d.
Pesticides are never harmful to animals.

Answers

The option here is B. Pesticides prevent the destruction of crops. Pesticides accomplish this very purpose. The rest of the options are never true 

Answer: The correct answer is-

b.  Pesticides prevent the destruction of crops.

Pesticides can be described as chemicals, which are primarily are used to control/ kill pest population that can other destroy the crops.

In other words, they are utilized in crop protection against pest such as weeds, insects, and other pests.

For instance, caterpillars, which feed on cabbage crop, are killed using pesticides, leading to high yields and better cabbage quality.

By preventing crops from destruction by pests, these chemicals lead increase  in the crop yields, and the times in one year that a crop could be cultivated on the field.

Thus, option b) is the right answer.

What is an allele?

A. A group of proteins
B. A type of virus
C. A group of chromosomes
D. A form of a gene

Answers

It is a form of gene.
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