What is chlorophyll and where is it located? in a short answer pls

Answer:

Hi good evening, here are the body functions that help you run a marathon:

Answer:

In most bird species, there are 10 primary feathers on each wing. If these flight feathers are damaged or lost, a bird cannot fly. Secondary feathers: These run along the 'arm' of the wing and sustain the bird in the air, giving it lift. The number of secondary feathers varies with different species.

Answer;

these are used in photosynthesis altogether. light splits the water into hydrogen and oxygen. water is used to manufacture starch, soften the testa during germination, dissolve food as well. carbon dioxide is also used during photosynthesis.

Answer:

False.

Explanation:

A prokaryotic cell doesn't even have a nucleus.

False. The articular surfaces of synovial joints, which are covered by hyaline cartilage, play a crucial role in joint stability.                                                                                                                                                                                                    

The shape and orientation of the articular surfaces determine the joint's range of motion and the stability of the joint. The synovial fluid that lubricates the joint also contributes to joint stability by reducing friction and wear between the articular surfaces. Ligaments and tendons surrounding the joint provide extra support and stability.The articular surfaces are an essential component of joint stability in synovial joints.
Joint stability is also influenced by the surrounding ligaments, muscles, and tendons that work together to maintain the proper alignment and positioning of the joint. Overall, the articular surfaces are an essential component in ensuring joint stability.

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Answer:

O B. Introduce ladybugs to eat the aphids

Explanation:

In crop production, there are certain pests known to categorically affect a particular crop plant. Hence, there are ways devised to tackle this issue of pest attack on crops. One of those ways is the "BIOLOGICAL CONTROL METHOD".

The biological control method involves the use of natural enemies to combat pest organisms. The natural enemies are living organisms that prey on the so called pest organism. This is the case in this question, where a specific aphid is known to infest spinach, peppers, and tomatoes.

The farmer will employ biological control method in stopping these aphids by introducing ladybugs to eat the aphids.

Answer:

OLM alpha 2 cells would be the answer.

Cells that act as gatekeepers that permit materials to pass to the neurons of the brain from the capillaries are called astrocytes.

Astrocytes are specialized glial cells that exceeds the number neurons by a factor of more than five.

They tile the entire central nervous system and perform a variety of essential complex functions in a healthy central nervous system.

Astrocytes not only control blood flow, but they also transport mitochondria to neurons and provide the building blocks for neurotransmitters, which fuel neuronal metabolism.

Furthermore, astrocytes have the ability to phagocytoze synapses, alter neurotrophin secretion, and clear debris.

Astrocytes can produce a strong antioxidant response to protect themselves and neurons by releasing glutathione precursors to neurons.

Because of their role in scar formation, astrocytes can regulate and contain immune responses, thereby controlling neuroinflammation.

Thus, the answer is astrocytes.

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Explanation:

mmmmm ... I think there ability to mate with each other and create gene pools is the answer

but sorry if it turns out to be wrong

Answer:

1 red: 2 pink: 1 white

0 red: 4 pink: 0 white would be the phenotypic ratio expected in the o spring of two pink flowers. So, the correct option is (D).

Phenotypic ratio defined as the relative number of offspring expressing a particular trait or combination of traits, which can be determined by performing a test cross and the frequency of the trait or trait combinations being expressed depending on the genotype of the offspring can be identified.

Phenotypic ratio is expressed as the ratio of different phenotypes present in the progeny of a cross where the ratios are numerical comparisons. For example, if one has three mangoes and two oranges, the ratio of mangoes to oranges will be 3:2.

For above given information, if we cross RR which is white with R'R' which is red, we will get 4RR' offspring which are pink in color. then the ratio will be 0 red: 4 pink: 0 white.

Thus, 0 red: 4 pink: 0 white would be the phenotypic ratio expected in the o spring of two pink flowers. So, the correct option is (D).

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B. Red blood cells.

They can only run the anaerobic energy extraction pathway.

Answer:

Mercury, Venus, Mars, Earth

Explanation:

Answer:

Motion

Explanation:

Kinetic particles are always in motion, that should just be the fundamental law of kinetic energy

Answer:

Gamma rays are used in medicine (radiotherapy), industry (sterilization and disinfection) and the nuclear industry. Remember it is very important to shield against gamma rays since they can cause diseases to skin or blood, eye disorders and even cancers.

Explanation:

Option d is Correct. The kidneys will fuse together during the development of the fetus through an artificial hole between the urine bladder and portions of the large intestine.

During a cystostomy, a tiny tube is surgically inserted into the bladder through the lower abdominal skin. The tube enables your bladder to empty its contents into a bag outside of your body.

Overflow incontinence associated to prostate disorders is more common in men with prostate issues. Small amounts of urine can leak out when you urinate due to conditions like prostate cancer or benign prostatic hyperplasia that restrict the urethra.

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Option d is Correct. The kidneys will fuse together during the development of the fetus through an artificial hole between the urine bladder and portions of the large intestine.

During a cystostomy, a tiny tube is surgically inserted into the bladder through the lower abdominal skin. The tube enables your bladder to empty its contents into a bag outside of your body.Overflow incontinence associated to prostate disorders is more common in men with prostate issues. Small amounts of urine can leak out when you urinate due to conditions like prostate cancer or benign prostatic hyperplasia that restrict the urethra.The term "Vesicocolonic fistula" refers to an artificial opening between the urine bladder and portions of the large intestine. A vesicocolonic fistula is a connection between the urine bladder and the large intestine that is abnormal. This can be caused by a number of causes, including prior surgery.

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Answer:

nucleic acid

Explanation:

Your body uses carbohydrates, lipids, and proteins for energy. The only biological macromolecule not used for energy is a nucleic acid.

Answer:

skin cancer

Explanation:

because a human skin system is not evolved to handle the harsh conditions invoked by ultraviolet rays

Answer:

Mechanisms of evolution correspond to violations of different Hardy-Weinberg assumptions.

Answer:

AaBBCC

Explanation:

I think this is it. Hope it helps

Answer:

When animals like cows or sheep chew the cud, they repeat the process of chewing their partially digested meal over and again in their mouth before swallowing it.

OAmalOHope:

Cellular respiration describes the process of oxygen and glucose and converting into water and carbon dioxide. Homeostasis is a term which refers to biological processes in which living things must maintain stable and equal conditions for survival. Cellular respiration which uses oxygen and glucose must be able to sustain life by releasing energy which is called ATP, the ATP which is produced enables many biological processes that keeps organisms alive. Cells need energy to grow, move, and function. The process of homeostasis enables cellular respiration to produce enough molecules which can sustain the development of the cell. Without homeostasis cellular respiration would cease to function and without cellular respiration the process of homeostasis would not occur. Homeostasis regulates how much molecules have to be expended in order to produce energy for the process of cellular respiration.

Answer & explanation:

The theory of continental drift emerged a long time ago. When mapping some points on Earth, scholars suspected that the continents were united in the past.

Francis Bacon suggested in 1620 that the east coast of the South American continent and the west coast of Africa fit together perfectly, giving the impression that they had parted in the remote past. A similar observation to this had already been made by another scholar named Abraham Ortelius, around 1596.

A century later, hypotheses became a scientific theory with previously elaborated arguments. Then, the theory of Continental Drift was officially born, when the German Alfred Wegener formulated it in 1912, establishing that the Earth had been divided, in its slow fragmentation, into two great continents, Laurasia and Gondwana.

These hormones increase cellular activity and generate heat, raising body temperature and counteracting the initial decrease. When body temperature returns to its normal range, the negative feedback loop is complete. Thermoreceptors in the body detect a decrease in temperature. In response, they secrete TRH (thyrotropin-releasing hormone).

TRH targets the anterior pituitary gland and stimulates it to secrete TSH (thyroid-stimulating hormone). Cellular activity is stimulated, which generates heat, raising body temperature. This is an example of a negative feedback system.A negative feedback system occurs when the body detects a change in a physiological parameter and produces a response that counters that change, returning the parameter to its normal range.

In this example, the decrease in body temperature is detected by thermoreceptors, which respond by secreting TRH. This hormone stimulates the anterior pituitary gland to release TSH, which in turn stimulates the thyroid gland to release thyroid hormones.

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The  negative feedback mechanism contributes significantly to the maintenance of homeostasis. Option B

The term negative feedback implies that the process is stopped as long as the action is complete. This implies that once the process is set in motion, it is going to continue until an accepted level is reached then the process reverses itself.

The negative feedback mechanism is the reason behind homeostasis thus, negative feedback mechanism contributes significantly to the maintenance of homeostasis.

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False. Stretch reflexes can NOT cause reciprocal inhibition because the sensory neuron synapses on the alpha motor neurons of both agonists and antagonists.

The stretch reflex activates agonists directly. However, reciprocal inhibition of the antagonist happens through an interneuron.

Extensor and flexor motor neurons are both firing to keep the arm in place. The stretch reflex activates the flexor and hinders the extensor when the pitcher is placed on the tray.

When a muscle is stretched (lengthened) too far or too quickly, the muscle spindles are stimulated, and the stretch reflex is activated, causing the muscles to contract and safeguard the muscle from being overstretched or torn.

The polysynaptic stretch reflex is caused by a single sensory stimulus that synapses on interneurons in the gray matter of the spinal cord, providing connectivity to multiple muscles for compression or reciprocal inhibition.

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Answer:

I would say the answer is A. I'm not 100% percent but that's what I would put.

Near the polar regions :)

The statement that “ pathogenic microbial agents include bacteria, worms, protozoa, viruses, fungi, and heavy metals ” is false.

Pathogens are microscopic organisms that have the ability to enter the body and can be a source of disease for the body. It includes tiny living organisms which are not visible to the normal eye. As the pathogens definition includes only living organisms therefore heavy metals are not included in the group of pathogens while bacteria, worms, protozoa, viruses, and fungi are considered to be pathogens since they are living organisms and have the ability to penetrate into hosts and can cause a disease or illness.

However, if the levels of heavy metals are too high in the body, they can be dangerous for the body as they have an adverse effect on many different organs.

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Answer:

C

Explanation:

Reliability is another name for the precision of the measurement, and it means how well the value is repeated; this is, how close the different measurements are to each other. If the measurements are close one to each other, then the instrument is precise or reliable (high reliability).

Validity is another name for the accuracy of the measurement; this is, how close the measurement is to the true or accepted value.

With that, we can compare the reliability (precision) and validity (accuracy) of the four different thermometers.

Repeat the table:

Temperatures in °C:

Thermometer  Reading 1   Reading 2   Reading 3

       W                 100.1             99.9             96.9

        X                 100.4           102.3             101.4

        Y                  90.0            95.2             98.6

        Z                  90.8             90.6            90.7

Reliability:

To analyze reliability (precision) we must compare the measures of every thermometer among them. A good approximation can be made calculating the range, i.e. the difference between the largest and the smallest readings:

Now, you conclude that the most reliable is thermometer Z and the least reliable is thermometer Y. The complete ranking, from most reliable to least reliable is:

Z > X > W > Y

Validity:

To determine validity you must compare the mean of the three measures for each thermometer with the accepted value for the boiling point of pure water (100.0°C).

The mean is the sum of the three readings divided by 3.

The absolute error is calculated with the formula:

absolute error = | accepted value - calculated value |.

The calculated value is the mean.

For W: mean = (100.1 + 99.9 + 96.9)°C / 3 = 99.0°C

                   absolute error = 100.0°C - 99.0°C = 1.0°C

For X: mean = (100.4 + 102.3 + 101.4)°C / 3 = 101.4 °C

                  absolute error = 101.4°C - 100.0°C = 1.4° For Y: mean = (90.0 + 95.2 + 98.6)°C / 3 = 94.6°C

                  absolute error = 100.0°C - 94.6°C = 5.4°C

For Z: mean = (90.8 + 90.6 + 90.7)°C / 3 = 90.7°C

                  absolute error = 100.0°C - 90.7°C = 9.3°C

Now you can rank the thermometers as per their validity (accuracy):

1.0°C < 1.4°C < 5.4°C < 9.3°C

Thus, W is the most accurate, X is the second most accurate, Y is the third, and Z is the least accurate.

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