Which of the following describes a benefit of membership in a research community?

Answer:

A Because all are complex cells with certain functions that cannot be greatly altered without affecting fitness.

B Because VSG switching may not be restricted to trypanosomes.

C Because all have proteins in their cell walls or cell membranes.

D None of these answers are correct.

The answer is C .Because all have proteins in their cell walls or cell membranes.

Explanation:

Pattern recognition strategy employs the use of pattern recognition receptors which are proteins for the recognition of molecules frequently found in pathogens. When they are recognized, the body then marks the cells for destruction.

Pattern recognition strategy affect prokaryotic and eukaryotic pathogens as well as hosts because all have proteins in their cell walls or cell membranes and they help in the recognition of pathogens or host for further action on them.

Answer:

mass of CaCl₂ = 67.4 g of CaCl₂

Explanation:

A 45% CaCl₂ Solution contains 45 g of solute per 100 mL of solution.

mass concentration = mass of solute (g)/ volume of solution (L)

100 mL of solution = 100 * 1L /1000 = 0.1 L

Mass concentration of solution = 45 g/0.1 L = 450 g/L

Molar concentration of solution = mass concentration / molar mass

molar mass of CaCl₂  = 111 g/mol

molar concentration = 450 g/L / 111 g/mol = 4. 05 mol/L

Number of moles of CaCl₂ present in 150 ml of 4.05 mol/L  solution = molar concentration *  volume (L)

number of moles of CaCl₂  = 4.05 * 150 * 1 L/1000 = 0.6075 moles

mass of CaCl₂  present in 0.6075 moles  = number of moles * molar mass

mass of CaCl₂ = 0.6075 * 111 = 67.4 g of CaCl₂

Answer and explanation:

Among the main evidences of the theory of continental drift, we can mention the fit of the lines of the coasts of several continents, In addition to the similarity between several relief structures and rocks in different continents (such as mountain ranges found in South America and on the east coast of Africa).

There are also records of fossils of identical extinct plants, found on the African continent and also in countries like Australia, India and Brazil, for example.

Identical reptile fossils have also been found in Africa and South America, in addition to several correlations in the distribution of aquatic dinosaur fossils that lived in common areas of the ancient supercontinent.

Answer:

Similar rock types are found across continents.

Explanation:

i just know,im smart duh

Answer:

To the antigen so the enzymes are only present when the molecule of interest is also present

To the plastic of the reaction well so the enzymes can concentrate the molecule of interest

To the capture antibody so the enzymes are only present when the molecule of interest is also present

To the detection antibody so the enzymes are only present when the molecule of interest is also present

Explanation:

Answer:

Neuropeptides

Explanation:

They are proteins that function as chemical messengers and are released by neurons. They contain 3 to 36 amino acids.

Hope this helps!!! PLZ MARK BRAINLIEST!!!

Answer:

Gender role attraction determine your sexual identificaton.

Explanation:

Answer:

27 years

Explanation:

Answer:

Perennation brings adaptive advantages to the plant under unfavorable seasonal conditions

Explanation:

Perennation can be defined as the potential of plants for surviving in unfavorable seasonal periods including, for example, drought or extreme seasonal temperatures. Perennation is a process associated to the evolution of adapted 'perennating organs' capable of storing nutrients, which will be subsequently used during unfavorable conditions. Examples of such perennating organs include bulbs, rhizomes, and tubers, which are usually related to the asexual reproduction processes of plants.

Answer:

iron

Explanation:

iron is present in red blood cells. Without it the RBC's start to die and are less in number. Which causes anaemia.

Answer:

Yes, Beef is necessary for a balanced diet.

Explanation:

Beef is necessary for a balanced diet because it contains high amount of energy which is required for performing different activities but too much intake of beef causes diseases because it contains high amount of cholesterol and fats. these cholesterol deposits in the vessels of the heart and prevent the normal flow of the blood which causes heart diseases like heart attack etc. So Beef is necessary for a balanced diet but in limited amount.

Answer:

Option C is the correct choice.

Explanation:

Some other choices provided do not correspond to the circumstance in question. And the correct response will be Option C.

The statement 'diploid sporophytes that produce spores by meiosis alternate with haploid gametophytes that produce gametes by mitosis' correctly describes the alternation of generations in a plant life cycle (Option C).

In plants, the diploid (2n) sporophyte undergoes meiosis to generate haploid (n) spores.

Subsequently, plant spores undergo successive mitosis to produce multicellular haploid (n) gametophytes.

In the gametophyte phase, a plant produces male and female haploid (n) gametes by mitosis in organs known as gametangia.

The diploid (2n) sporophyte is the zygote produced from the fusion of two (one male and one female) plant gametes. This zygote first develops into an embryo which will give rise to the adult sporophyte by successive mitosis.

In conclusion, the statement 'diploid sporophytes that produce spores by meiosis alternate with haploid gametophytes that produce gametes by mitosis' correctly describes the alternation of generations in a plant life cycle (Option C).  

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Answer:

b. It is based on the size of seismic waves

Explanation:

just did the test

The statement that describes one aspect of an earthquake's magnitude is: "It is based on the size of seismic waves."

An earthquake's magnitude is a measure of the amount of energy released by the earthquake, and it is determined by measuring the amplitude (height) of the seismic waves generated by the earthquake. The size of the seismic waves is directly related to the amount of energy released by the earthquake, and this is used to calculate the earthquake's magnitude.

The most commonly used scale for measuring earthquake magnitude is the Richter scale, which is based on the amplitude of the largest seismic wave recorded on a seismogram. Other scales, such as the moment magnitude scale, are based on the seismic moment, which takes into account the size of the fault rupture and the amount of slip on the fault.

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Answer:

The independent variable is the time and the dependent variable is the heart rate.

Explanation:

In this case a study is being performed to determine whether holding one's breath for 30 seconds leads to increasing, decreasing or similar heart rate.

The hypothesis can be defined as follows:

H₀: Holding one's breath does not effect the heart rate.

Hₐ: Holding one's breath does effect the heart rate.

A relationship is to formed between the heart rate and the time for which you are holding your breath.

So, the independent variable is the time and the dependent variable is the heart rate.

Answer:

Lab: Heart Rate  

Part A: Identifying Variables

The dependent variable happens as a result of values/changes associated with the independent variable.

Independent variable: number of cigarettes smoked

Dependent variable: risk for lung cancer

Independent variable: number of sharks swimming in a coastal region

Dependent variable: number of shark attacks on humans

Independent variable: amount of milk a person drinks

Dependent variable: the strength of his or her bones

Part B: Heart Rate

Hypothesis: If I hold my breath for 30 seconds, then my heart rate will

(choose 1) increase/decrease.

Independent variable: holding my breath

Dependent variable: heart rate

Part C:

The heart rate decreases because oxygen exchange in the lungs decreases.

This depends on what you chose for heart rate in the hypothesis. If you said the heart rate decreases after holding your breath, and the results showed the heart rate decreased, then the hypothesis is supported. If you said the heart rate decreases after holding your breath, and the results showed the heart rate increased, then you refuted the hypothesis.

Heart rate can change due to an increase or decrease in activity, moving positions such as sitting and standing, and emotions.

Example: Increase in activity—jumping jacks

Hypothesis: If I do five jumping jacks, then my heart rate will increase.

Test hypothesis. You can use the average resting heart rate from the previous experiment. If you do an experiment with an increase in physical activity like jumping jacks, then your data will reflect an increase in heart rate because the body requires more energy, which requires more oxygen, increasing the overall flow of blood in the body.

Support or refute the hypothesis based on the results. The hypothesis is supported if it aligns with the observed results. The hypothesis is refuted if the results don’t match the statement based on the variables.

Testing more than one variable at a time makes it difficult to interpret the results and support or refute the hypothesis. With one variable, the results can be associated with changes to that variable. To get the most reliable data to support or refute a hypothesis, an experiment should be completed several times to see if the results show the same trends.  

Explanation:

Lab: Heart Rate  

Part A: Identifying Variables

The dependent variable happens as a result of values/changes associated with the independent variable.

Independent variable: number of cigarettes smoked

Dependent variable: risk for lung cancer

Independent variable: number of sharks swimming in a coastal region

Dependent variable: number of shark attacks on humans

Independent variable: amount of milk a person drinks

Dependent variable: the strength of his or her bones

Part B: Heart Rate

Hypothesis: If I hold my breath for 30 seconds, then my heart rate will

(choose 1) increase/decrease.

Independent variable: holding my breath

Dependent variable: heart rate

Part C:

The heart rate decreases because oxygen exchange in the lungs decreases.

This depends on what you chose for heart rate in the hypothesis. If you said the heart rate decreases after holding your breath, and the results showed the heart rate decreased, then the hypothesis is supported. If you said the heart rate decreases after holding your breath, and the results showed the heart rate increased, then you refuted the hypothesis.

Heart rate can change due to an increase or decrease in activity, moving positions such as sitting and standing, and emotions.

Example: Increase in activity—jumping jacks

Hypothesis: If I do five jumping jacks, then my heart rate will increase.

Test hypothesis. You can use the average resting heart rate from the previous experiment. If you do an experiment with an increase in physical activity like jumping jacks, then your data will reflect an increase in heart rate because the body requires more energy, which requires more oxygen, increasing the overall flow of blood in the body.

Support or refute the hypothesis based on the results. The hypothesis is supported if it aligns with the observed results. The hypothesis is refuted if the results don’t match the statement based on the variables.

Testing more than one variable at a time makes it difficult to interpret the results and support or refute the hypothesis. With one variable, the results can be associated with changes to that variable. To get the most reliable data to support or refute a hypothesis, an experiment should be completed several times to see if the results show the same trends.  

Answer:

90 percent

Explanation:

Based on average estimated juvenile and adult survival rate for each species

Answer:

true

Explanation:

Penicillin is a bacteria so it means it causes the production of antibodies which then boost the immune system.

It is like vaccination; small doses of the inactive form of the infection is injected into the body in order for the body to create antibodies resistant to such infection(thereby boosting the immune system).

Hope it helps.

Answer:

The answer is option B.

Hope this helps you

Answer:

Hello

In the small intestines bile emulsifies fats while enzymes digest them. The intestinal cells absorb the fats. Long-chain fatty acids form a large lipoprotein structure called a chylomicron that transports fats through the lymph system.

hope this answer is correct

In the small intestines bile emulsifies fats while enzymes digest them. The intestinal cells absorb the fats.

Lipids (fats and oils) are broken down in the small intestine. The enzyme lipase is responsible for breaking down lipids into fatty acids and glycerol.

Micelles transport the end products of lipid digestion (free fatty acids and monoglycerides) to the digestive tract lining for absorption.

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Answer:

When a neurotransmitter is released, the posterior receptor neuron has the receptor to bind to it because that neurotransmitter is a stimulator of the postsynaptic membrane.

Explanation:

The neurotransmitters that are released from the motor plate, that is, from the postsynaptic membrane to the presynaptic space, are captured by receptors of the postsynaptic membrane, which can be another neuronal structure to transmit an impulse or a muscle to be able to execute the contraction.

I leave you an image that draws up the stimulation of the postsynaptic membrane by means of a neutrotranismor, these are called as: adrenaline, norepinephrine, acetylcholine, etc.

Number 1 is the presynaptic membrane that releases the neurotransmitter (yellow balls), number 2 is the intersynaptic space, 3 is the postsynaptic membrane that in number 4 can be seen to be activated by relating to the neurotransmitter

Answer:

1. distance from the sea

2. ocean currents

3. direction of wind

4. shape of the land /topography

5. distance from the equator

Hope this helps

Answer:

Study the effects of mold exposure on people who suffer from asthma.

Explanation:

Air pollution refers to the release of chemical or substances called pollutants into the air that is harmful to human health when inhaled.

One way to address air pollution is to Study the effects of mold exposure on people who suffer from asthma because this is as a result of toxic material inhaled from the air. Mold exposure come from indoor air in buildings with mold growth and the buildings construction consist of some toxic chemicals. Exposure to mold worsen Asthma or lung problems and infants exposed to mold growth have high risk of developing asthma because of the toxic chemicals in the air that trigger asthma.

By studying the effect of mold exposure on people with Asthma can be use to address polluted air because, through the study the detrimental effect will be non and crucial steps will be taken to reduce the content of the polluted air and much care will be taken when constructing buildings by using the correct materials for construction.

Answer:

Study the effects of mold exposure on people who suffer from asthma.

Explanation:

The best strategy for addressing polluted air is by increasing those activities which reduces air pollution and prevent those activities which is responsible for increasing air pollution. People living in moldy environment suffer from asthma disease. When there is mold present in the environment, during inhalation the spores of mold present in the air enter in our body and reach to lung where it causes asthma disease.

Answer:

Exocytosis describes the process of vesicles fusing with the plasma membrane and releasing their contents to the outside of the cell.

Don't write Endocytosis !!!

Hope this helps !

Explanation:

Answer:

it's Endocytosis

the other answer is wrong i just did the quiz

Explanation:

Answer: Here are the options.

A. Teratogens impact different genotypes differently.b.teratogens impact specific aspects of development.c.teratogen effects may not emerge until later in life.d.teratogen effects are the same regardless of the time when the individual is exposed.

The key lesson is that teratogens impact different genotypes differently or in different ways.

Explanation:

thalidomide is a tetratogen , a substance that will have a physical or functional defect on an embryo after the pregnant mother is exposed to the substance. This disturb the physical development of the child. It became popular to treat morning sickness in pregnancy but was discovered to result in major limb deformities;

Tetratogen impact different genotypes in different ways because different genotypes have different ways they respond to tetratogens because of their level exposure and subscetability. This the main reason thalidomide showed no impact when tested on prenatal rabbits but led to birth defects in prenatal humans. The genotypes of prenatal rabbits are not subscetiple to tetratogens compare to that of the developing embryo on exposure.

Answer:

Carbon

Explanation:

Reverse photosynthesis

Answer:

carbon dioxide

Explanation:

our body changes it

Complete question:

Part C: Using the Punnett square to make predictions

Use the completed Punnett square in Part B to answer the questions below about the F2 generation.

Note: You will find the Punnet square in the attached files.  

Note that questions 3 and 4 require a more advanced evaluation of probabilities than do questions 1 and 2 because you have to consider all possible groupings and orders of three F2 seeds. If you need help with these calculations, use Hint 3.

1) What is the probability that an F2 seed chosen at random will be yellow?

2)  What is the probability that an F2 seed chosen at random from along the yellow seeds will breed true when selfed?

3) What is the probability that three F2 seeds chosen at random will include at least one yellow seed?

4) What is the probability that three F2 seeds chosen at random will include one green seed and two yellow seeds?  

Answer:

1) 3/4              

2) 1/3

3) 63/64

4) 27/64

Explanation:

Parental) Yy   x   Yy

Gametes) Y   y   Y   y

Punnet Square)

                      (1/2) Y            (1/2) y

      (1/2) Y    (1/4) YY         (1/4) Yy

      (1/2) y     (1/4) yY          (1/4) yy  

F2)  1/4 YY

      2/4 = 1/2 Yy

      1/4 yy

1) There will be 3/4 of probabilities of getting a yellow F2 seed

   1/4 YY + 2/4 Yy = 3/4 Y-

   The symbol "-" means that in its position there might be either a Y or y allele.

2) As there are only three yellow possible genotypes for yellow seeds, the fourth genotype for green seeds is not considered. Our pool now is only yellow seeds. So the probability of getting a pure breeding yellow seed among all yellow seeds is 1/3.  

   1/3 YY

   1/3 Yy

   1/3 yY

In the pool of yellow seeds, there are three genotypes, and only one of them corresponds to pure breeding yellow seed.

3) To calculate the probability of getting at least one yellow seed among the three seeds randomly chosen, we need to multiply and then perform addition. This is, when we take three seeds from the pool, we have different possibilities of getting seeds with different genotypes. So:

There might also be one green sees and two yellow seed, so we multiply their probabilities in the order in which we might get them. This is:

And we could also get two green seeds and only one yellow seed:

Now, having all the possibilities, we just need to add all the possibilities:

27/64 + 9/64 + 9/64 + 9/64 + 3/64 + 3/64 + 3/64= 63/64.

Note that we did not include the possibility of getting three green seeds (1/4 x 1/4 x 1/4). This is because we were asked to calculate the probabilities of getting AT LEAST one yellow seed.

4) To calculate the probability of getting two yellow seeds and one green seed among the three seeds randomly chosen, we should multiply probabilities and then sum them up.

The orders in which we could get the seeds are:

Now, having all the possibilities, we just need to add all the possibilities:

6/64 + 9/64 + 9/64 = 27/64.

Answer:

1) 3/4

2) 1/3

3) 63/64

4) 27/64

Explanation:

1) yellow seed could either be GG, Gg or Gg from Punnett square, therefore, there is a 3/4 probability

2) true-breeding = either GG or gg. Therefore, out of the 3 yellow seed options, only 1 is true-breeding, therefore, it's a 1/3 probability

3) "there are 7 possible groupings that have at least 1 yellow seed; the sum of their individual probabilities yields the final answer of 63/64. Note that you could have also calculated this answer by subtracting the probability of the one category that doesn’t fit the criterion (Green, Green, Green) from the total probability (1 – 1/64 = 63/64)"

4) "there are 3 possible groupings that have 1 green and 2 yellow seeds; the sum of their individual probabilities yields the final answer of 27/64"

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Answer:

the challenges they would expect to see is the plants not having water or air

planted need water to have photosynthesis and since theres no water in space and little to no atmosphere the plants would suffocate

The answer you are looking for is A

Answer:

DNA ligase

Explanation:

The biochemist must have left out DNA ligase enzyme.

The DNA ligase enzyme is able to catalyze the formation of phosphodiester bonds and as such, capable of joining strands of DNA together to form a single strand.

The numerous DNA segments of a few nucleotides long observed by the biochemist must have been the replicated product of the lagging DNA strand. The lagging strand is replicated discontinuously in short strands because the DNA polymerase enzyme can only elongate primers in 5' to 3' direction. The short segments are known as Okazaki segments and are usually joined together to form a whole strand by the DNA ligase enzyme.

Hence, the missing component is the DNA ligase.

Answer:

Scientist makes 2 groups.

Explanation:

One experimentle group and other is controle group.