6. Snyder ends her talk by


saying, "Darwin knew what


we seem to have forgotten,


that science is not only for


scientists. " What do you


think that is meant by this?


Do you consider yourself to


have a basic scientific


literacy? Explain and


discuss your thoughts.

Answer:

1)•Plants do not have a circulatory system.

•Humans have a well defined circulatory system.

2)•transportation in plants occurs through specialised tissue xylem and phloem.

•Transportation in humans occurs through a netwotk of blood vessels such as artery vein capillary.

3)In plants substances transported are water, minerals, sugars and amino acid.

•In humans substances transported are glucose, glycerol, minerals, vitamins, fatty acids, amino acids and hormones.

4)Transportation in plants in controlled by opening and closing of stomata.

•Transportation in humans is controlled by constriction or dilation of blood bessels.

-->■Transportation in humans is more effective than the plants because in humans there is a well defined circulatory system which is highly regulated.As transport occur through blood vessel , transportation can be regulated by dilation or constriction of blood vessel.But plant do not have such circulatory system.

BRAINLIST PLS

Answer:

Stimulating the brain can enable the benefits of

Explanation:

Answer:There are often not more than one or two independent variables tested in an experiment, otherwise it is difficult to determine the influence of each upon the final results. There may be several dependent variables, because manipulating the independent variable can influence many different things.

Explanation: I hope this help my child UwU

Answer:

A

Explanation:

The Suns own weight keeps itself together and keeps its size and shape. all things have gravity. in this case, the sun keeps it shape with balancing its gravity with the pressure.

The best explanation of why the sun maintains its size and shape is forces exerted by orbiting planets cause the sun to rotate. The correct option is C.

"Orbiting" is one of those digital dating terms that perfectly describes what many of us have experienced but didn't realize had a name. It's when someone you were dating tells you they're no longer interested but keeps in touch with you on social media.

The Sun's own weight holds it together and maintains its size and shape. Everything has gravity. In this example, the sun maintains its shape by balancing gravity and pressure.

Planets orbit the sun in elliptical orbits, with the sun slightly off-center of each ellipse.

Therefore, the correct option is C. Forces exerted by orbiting planets cause the sun to rotate.

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Answer:

This question is asking to identify the variable in the experimental statement.

The eye chart is the CONTROL VARIABLE

Explanation:

An experiment consists of several variables to look out for in order to achieve any significant result. These variables are independent variables, dependent variables and control variables. Although independent and dependent variables are the major experimental variables, but control variables are also important.

A control variable is the variable that remains constant or unchanged throughout the experiment. Any change to the control variable will affect the dependent and independent variables. In this question, the eye chart is the CONTROL VARIABLE because it remains constant or unchanged. The same eye chart is used for the experiment.

N.B: The distance to the eye chart is the independent variable while the number of letters visible on the line is the dependent variable. Hence, changing the eye chart (control variable) will affect the distance and the number of letters visible.

Red and yellow bone marrow are two types of bone marrow found in the human body, and they differ in their function and composition.

Red bone marrow, also known as myeloid tissue, is responsible for the production of red blood cells, white blood cells, and platelets. It is located mainly in the flat bones of the skull, pelvis, ribs, sternum, and vertebrae. Red bone marrow contains stem cells, which give rise to the blood cells, and various other types of cells that support and nourish the stem cells. Yellow bone marrow, also known as fatty tissue, is found mainly in the long bones of the arms and legs. It consists mainly of fat cells, which store energy, and a few scattered blood cells. Yellow bone marrow does not produce blood cells, but it can be converted into red bone marrow if the body needs to increase its production of blood cells. The conversion of yellow bone marrow into red bone marrow is a natural process that occurs in response to certain conditions, such as severe bleeding or anemia.

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Answer:

This says 'No online sources' but whatever, I'll help with what I can.

Explanation:

You could do a drawing of the photosynthesis cycle, cause thats what I'm best with. The paragraph is on you.

We can expect 20 plants to be dwarf and 60 plants to be tall in offspring of this cross.

The presence of two different alleles at a particular gene locus is called heterozygous.

We use Punnett square to determine  possible genotypes and phenotypes of the offspring. Let "T" represent the dominant tall allele and "t" represent the recessive dwarf allele. Since both the parents are heterozygous (Tt), we represent their genotypes as:

 T   t

T| TT |Tt|

t| Tt | tt |

From Punnett square, we can see that there are two possible ways for dwarf plant to be produced, both of which involve parents contributing recessive t allele. These are Tt x Tt and Tt x tt crosses. Each of these crosses has a probability of 1/4 (or 25%) of producing dwarf offspring.

As given 80 offspring, we can expect approximately 1/4 of them to be dwarf plants. Therefore, number of dwarf plants expected is:

80 x 1/4 = 20.

Similarly, we can expect approximately 3/4 of offspring to be tall plants Therefore,  number of tall plants expected is: 80 x 3/4 = 60.

So, we can expect 20 plants to be dwarf and 60 plants to be tall in the offspring of this cross.

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Answer:

Here are the steps of primary succession in the correct order:

Exposed bare rock due to volcanic eruption or glacier

Pioneer species arrives (like lichen)

Small plants start to grow

Soil starts forming and mosses begin growing

Deciduous trees move in

Evergreen trees start growing

Answer:

the answer is D the sequence of nucleotides

The element that is most likely to give away electrons is lithium (option A).

A metal is a number of chemical elements in the periodic table that forms a metallic bond with other metal atoms.

Metals are generally shiny, somewhat malleable and hard and often a conductor of heat and electricity.

However, metals are known to donate electrons to nonmetals when involved in chemical reactions to form ionic bonds.

Lithium is a simple alkali metal in group 1 and the third lightest chemical element with symbol Li, therefore, it is the element that is most likely to lose electrons.

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The correct option that describes the waveform of ICA is the open systolic window suggests mild-to-moderate stenosis (<50% by diameter) and  the severely elevated peak-systolic velocities and end-diastolic velocities suggest severe ICA stenosis (>80%).  So, option B and D are correct.

The internal carotid artery (ICA) waveform, which reflects cerebral blood flow, can be measured using color Doppler ultrasonography. When blood enters and leaves the brain, the waveform is generated, which can be used to evaluate the cerebrovascular state. Waveforms are classified into three categories based on resistance, including high resistance, low resistance, and mixed resistance.

A high-resistance waveform refers to an arterial waveform that demonstrates a large difference between the highest systolic velocity and the lowest diastolic velocity, with a high-resistance index (RI). High systolic velocities, low diastolic velocities, and a relatively large difference between systolic and diastolic velocities are common characteristics of high-resistance waveforms, such as the ICA waveform.

A waveform is considered a low-resistance waveform if it exhibits a small difference between the maximum systolic velocity and minimum diastolic velocity, with a low-resistance index (RI). Low resistance flow typically appears in large arteries with strong diastolic flow, such as the renal artery.

The mixed-resistance waveform is a waveform with characteristics of both high and low resistance. In addition, the pulsatility index (PI) and resistance index (RI) of the waveform are calculated using the following equations:

Pulsatility Index (PI) = (Systolic Velocity - Diastolic Velocity) / Mean Velocity

Resistance Index (RI) = (Systolic Velocity - Diastolic Velocity) / Systolic Velocity

Therefore we can say that option B and D are correct answer.

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Complete Question:

The ICA waveform has a peak-systolic velocity of 597cm/sec, with end-end diastolic velocity of 223 cm/sec. which of the following is/are true regarding this waveform?

(A) this is within normal limits

(B) the open systolic window suggests mild-to-moderate stenosis (<50% by diameter)

(C) the elevated peak-systolic velocities and significant end-diastolic velocities suggest significant ICA stenosis (>50% diameter)

(D) the severely elevated peak-systolic velocities and end-diastolic velocities suggest severe ICA stenosis (>80%)

Answer:

constantly sliding all over each other

probably water, carbon dioxide because they are important inorder to begin the process of photosynthesei

The researchers who used cytological studies to support the conclusions drawn by Mendel were Sutton and Boveri.

Edmund B. Wilson, an American cytologist, first proposed the chromosome theory of inheritance in 1902, suggesting that hereditary traits are transmitted through chromosomes. Later, Thomas Hunt Morgan and his colleagues carried out experiments with fruit flies, confirming the chromosome theory. However, it was Walter Sutton and Theodor Boveri who made significant contributions in connecting the chromosome theory with Mendelian genetics.

Sutton independently formulated the concept of "chromosomal theory of inheritance" in 1902, suggesting that chromosomes carry the units of heredity. He observed that chromosomes behave similarly to Mendel's hereditary factors (genes) during cell division. Boveri, on the other hand, conducted experiments on sea urchins and demonstrated that abnormal chromosome distribution during cell division leads to abnormal development in offspring. His work further supported the idea that chromosomes carry the hereditary information.

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There are different types of cell organelles are present inside the cell. These different organelles have different functions.

Some examples of cell organelles are the nucleus, cell membrane, mitochondria, Golgi apparatus, lysozyme, vacuole, cytoplasm, and chloroplast. These are just a few examples of cell organelles, and there are other specialized structures present in specific cell types. Each organelle contributes to the overall functioning and organization of the cell, enabling it to carry out its essential processes.

The correct labeling of the given diagram is:

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Answer: Gradualism and punctuated equilibrium are two ways in which the evolution of a species can occur. A species can evolve by only one of these, or by both. Scientists think that species with a shorter evolution evolved mostly by punctuated equilibrium, and those with a longer evolution evolved mostly by gradualism.

Explanation:

The herbicide to be used must be nontoxic and must not bio accumulate in the bodies of the organisms.

A herbicide is a chemical that is used to control the growth of weeds. Weeds are unwanted crops. Herbicides may be toxic or non toxic.

Since the eaters of the dairy cows are very health conscious, and there is need to use the herbicide in order to preserve the cows, the herbicide to be used must be nontoxic and must not bio accumulate in the bodies of the organisms.

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Repeatability is the likelihood that a single person can obtain consistent results while repeating the experiment multiple times. Reproducibility is the probability that multiple researchers can reproduce the same results using the same methods and materials.

The major difference between the two is the fact that repeatability is the capacity of a person to replicate the same results on the same data set using the same procedures. Reproducibility, on the other hand, is the ability of multiple researchers to get similar outcomes using different data sets, equipment, or methods.

Repeatability example: When a scientist conducts an experiment several times and obtains comparable results each time, this is referred to as repeatability. For instance, if a chemist weighs a sample ten times and gets the same weight each time, they have achieved repeatability.

Reproducibility example: If a scientist conducts an experiment, writes a report, and submits it to a scientific journal, and another researcher follows the methods outlined in the original report and obtains the same results, the experiment is said to be reproducible. In other words, it is the ability of an experiment to produce the same results when repeated by a different person or team.

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Given that Stem Bromelain has an enzymatic activity of 0.542 U/mg, and there are 20 billion bacteria in our teeth. We need to calculate how long it takes to degrade all of the biofilm created by the bacteria.Assumptions and explanations used in the calculation: Assumption: The mass of the biofilm is not given. Therefore, it is assumed that the biofilm's mass is 1 mg, as the enzymatic activity of bromelain is provided per mg. If the biofilm's mass is different, the result will be different.

We know the enzymatic activity of bromelain, which is 0.542 U/mg.We are given that the number of bacteria in our teeth is 20 billion. The biofilm is created by these bacteria. Bromelain is supposed to degrade the biofilm. Therefore, we need to calculate the mass of the biofilm. The mass of the biofilm is assumed to be 1 mg, as the enzymatic activity of bromelain is given per mg.Now we can use the given data to calculate the time required for bromelain to degrade all of the biofilms created by the bacteria.First, we need to find the total enzymatic activity required to degrade the biofilm. The mass of the biofilm is assumed to be 1 mg.Enzymatic activity of bromelain = 0.542 U/mgTotal enzymatic activity required to degrade 1 mg biofilm= 0.542 U/mg × 1 mg= 0.542 UThe total enzymatic activity required to degrade the biofilm created by the 20 billion bacteria is:Total enzymatic activity required= Enzymatic activity per bacteria × Total number of bacteria= 0.542 U/mg × 20 billion= 1.084 × 10^10 UTo find out how long it takes for bromelain to degrade all of the biofilm, we need to know the rate of degradation. The rate of degradation depends on various factors, such as temperature, pH, etc., which are not provided in the question. Therefore, it is impossible to calculate the time required for bromelain to degrade all of the biofilms created by the bacteria without knowing the rate of degradation. Thus, the answer cannot be calculated.

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Single bonds on fatty acid tails indicate a saturated fat.

The saturated fat theory is a widely discussed concept in the field of nutrition, which proposes that a diet high in saturated fats can contribute to the development of heart disease and other health problems.

The theory is based on the idea that saturated fats, which are primarily found in animal products such as meat, butter, and cheese, can raise levels of low-density lipoprotein (LDL) cholesterol in the blood. LDL cholesterol is often referred to as "bad" cholesterol because it is associated with an increased risk of heart disease.

Proponents of the saturated fat theory argue that people should limit their intake of saturated fats and replace them with healthier fats, such as unsaturated fats found in nuts, seeds, and vegetable oils. However, in recent years, the theory has been challenged by some researchers who question the evidence behind it and propose that other factors, such as excess sugar and refined carbohydrates in the diet, may be more important contributors to heart disease.

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Oxygen + Water + Glucose (sugar) + Carbon Dioxide CO2 + H2O C6H12O6 + 6O2 Cellular respiration, also known as aerobic respiration, is a sequence of chemical processes that start with the reactants of sugar and oxygen and end with the waste products of carbon dioxide and water.

Carbon dioxide and water are the end products of cellular respiration. From your mitochondria, carbon dioxide is transferred out of your cell, to your red blood cells, and then back to your lungs to be expelled. In the process, ATP is produced.

During cellular respiration, ATP is created by the reaction between glucose and oxygen. As a result, carbon dioxide and water are discharged. The Krebs cycle, oxidative phosphorylation, and glycolysis—an anaerobic process—are the three steps of aerobic cellular respiration.

While glycolysis can take place in anaerobic environments, the TCA cycle and oxidative phosphorylation require oxygen.

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Answer:

I think the answer is landslide

Landslide is the massive movement of material from high altitude to low altitude, producing slope breaks. The correct option is B. The type of mass movement described in the example is landslide.

A landslide can be defined as a massive movement of materials that include rocks, soil, plants, debris, and other elements composing the ground.

Mass of material moves from high altitude to low altitude due to the action of gravity and the influence of other factors as humidity excess.

These movements occur because the material is exposed to external forces (gravity) that supersede the strength of these materials producing slope breaks.

Other factors such as rains, increase in water level, snowmelt, erosion, earthquakes, human activities, and others influence the landslide occurrence.

The correct option is B. The type of mass movement described in the example is landslide.

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Muscle weakness, intolerance to exercise, decreased hearing and vision, ataxia, seizures, learning difficulties, heart problems, diabetes, and poor growth are the hallmark signs of mitochondrial myopathy.

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The type of movement that Phillip was exhibiting when he walked on the outside edge of his feet is (b) eversion.

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In order to ensure that Pam and Martin's second child does not have cystic fibrosis, the probability of Pam and Martin having a child without cystic fibrosis is 75%..

The probability of Pam and Martin having a child without cystic fibrosis is 75%. The probability that Pam will pass the normal F allele to her offspring is 50%, and the probability that Martin will pass the normal F allele to his offspring is also 50%. Therefore, the probability of their child inheriting the normal F allele from both parents is 50% × 50% = 25%.Thus, the probability that the child will inherit the mutant f allele from Pam and the normal F allele from Martin is 50% × 50% = 25%. Therefore, the probability that the child will inherit the mutant f allele from both parents is 50% × 50% = 25%.

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