In prokaryotes, a search for genes in a DNA sequence involves scanning the DNA sequence for long open reading frames (that is, reading frames uninterrupted by stop codons). What problem can you see with this approach in eukaryotes?

Answers

Answer 1

Answer:

Answer:

DNA in eukaryotes have introns which are the non-coding sequences and are spliced out of primary transcript. They are not present in mature mRNA.

Explanation:

The reading frame of 50 or more nucleotides without any termination codon in between is called an open reading frame. The long open reading frames mostly represent protein-coding genes.

Hence, long open reading frames are searched for in order to find the genes. The presence of introns in eukaryotic DNA does not allow the application of this approach to find genes in eukaryotes.

The post-transcriptional modification of the primary transcript removes the introns. Hence, a mature mRNA does not have introns. Therefore, introns do not contain open reading frames.

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1. The industry that provides commodities that are basic to life isa. aerospace.
c. biotechnology.
b. agriscience
d. transportation.

Answers

b is the answer

explanation

agriscience is the right answer :)

3Drag each tile to the correct location on the chart.
A population of raccoons lives in a forested area with lots of trees. The raccoons eat insects, eggs, berries, nuts, and small animals such as
rodents and frogs. One of the main predators of the raccoons are coyotes, which also prey on rabbits.
Identify whether the changes to the ecosystem are more likely to increase or decrease the population of raccoons.
Large parts of the forest
are cut down for wood.
Pollution from a nearby farm
decreases the population
of insects in the forest.
Additional rain increases
the population of plants
in the forest
More permits to hunt
coyotes are approved.
A disease decreases
the population of rabbits
in the forest.
Frogs in a pond near
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Increases Population
Decreases Population

Answers

Answer:

Explanation:

What is Grave's disease?

Answers

Answer:

Graves´ disease is an autoinmmune disease that is caused when the immune system attacks the cells of the thyroid gland, which leads to an overproduction of the hormones secreted by the thyroid gland. This constant attack and destruction on the part of the immune cells causes the thyroid to increase in size, a condition that is commonly known as hyperthyroidism.

Hyperthyroidism can become a really serious issue because the excessive production of the hormones of the thyroid gland will increase the metabolic activity of all parts of the body and can, if left untreated, cause such serious conditions as blood clotting problems, type 1 diabetes, among others.

(select all that apply.) the mismatch of a dna base pair during duplication can result in a _____.

Answers

Out of the followinggiven choices;

mutation

recombination

differentiation

change

The answer ischange and mutation. When there is a mismatch base pair the mismatch repair mechanismof the polymerase enzyme kicks in. if the mismatch repair is defective, then a mutation will occur at the site of the mismatched base. These mutations can result inchanges in the phenotype of the cell that resultsin disease.

SOS:

The answer is change and mutation!

Hope this helps!

ActivityFish are sensitive to many environmental variables: dissolved oxygen, light, temperature, pH, clarity of water, food supply, presence of predators, etc. Fish will be attracted to different locations in a lake, based on its mix of variables.

Imagine you want to conduct an experiment to understand how just one of these variables differs in a local lake, depending on its depth. This lake reaches a depth of 17 meters. For this activity:

Pick a variable that might change as you go deeper in the lake on a given day.

Do a little research on that variable to determine how you might measure it in a lake.

Use the template below to outline an experiment to investigate this variable in the lake by depth. For each part, simply answer the question in parentheses to create your outline.

Type your response to each field in the space below that field:

Title: (Enter a brief, descriptive title. Hint: Sometimes it’s best to do this las

Answers

Complete question:

Fish are sensitive to many environmental variables: dissolved oxygen, light, temperature, pH, clarity of the water, food supply, presence of predators, etc. Fish will be attracted to different locations in a lake, based on its mix of variables.

Imagine you want to conduct an experiment to understand how just one of these variables differs in a local lake, depending on its depth. This lake reaches a depth of 17 meters. For this activity:

Pick a variable that might change as you go deeper in the lake on a given day.

Do a little research on that variable to determine how you might measure it in a lake.

Use the template below to outline an experiment to investigate this variable in the lake by depth. For each part, simply answer the question in parentheses to create your outline.

Type your response to each field in the space below that field:

Title: (Enter a brief, descriptive title. Hint: Sometimes it’s best to do this last.)

Purpose: (Why are you doing this experiment?)

Hypothesis: (What do you predict from this experiment and why?)

Procedure/Method: (How will you specifically carry out your experiment to test your prediction?)

Observations: (What specifically would you look for and record?)

Data analysis: (With this kind of data, what would be the best way to present it?)

Conclusion: [No need to enter anything here for now.]

References: (List any references you used to design the experiment. Note that for a full experiment write-up you’d also list any references you used while carrying out the experiment or in analyzing your results.)

Answer and Explanation:

Variable: dissolved oxygen

Title:Oxygen variation as a water quality indicator.

Purpose: To study how dissolved oxygen varies with depth

Hypothesis: The percentage of dissolved oxygen will decrease as depth increases.

Procedure/Method:

Selection of sampling spots, according to the morphometry of the lake, different depth, water currents inputs and outputs, aquatic vegetation, and lake type of use.

In each spot water samples will be taken using a Niskin bottle. The sample will be taken from different depth: 5 meters deep, 10 meters deep, and 15 meters deep (photic zone).

Dissolved oxygen (DO) will be measured in each sample, by using a multiparameter sensor.

In a field sheet to evaluate the parameter, the %DO by site and depth will be recorded.

Observations:

%DO in each site and depth will be recorded in order to analyze how it varies with depth.

Data analysis:

According to different indicators of water quality in a lake, the observed %DO will be compared and analyzed to evaluate the sanity state of the lake water. Example of valuation scale,

NORMAL index: Oxygen concentration in the water column is found to be sufficient for the fish survival

REGULAR: Decrease in oxygen concentration at greater depth, values below saturation in the background

CRITICAL: Null oxygen concentration in all or part of the column profile of water. Probable fish mortality events.

According to the taken data, observations on the study site will be taken, such as the variation in oxygen concentration as it gets deeper, until reaching hypoxia level, where fishes can not survive. Data can be presented in tables and in graphs, in both cases comparing sampling sites and depth, making a focus on the valuation scale.

Conclusion:

Association of the oxygen variation with the sanity state of the lake, microbiology decomposition processes at different depths, eutrophication state, among others.

References:

- Quality monitoring in San Roque waters. INA-CIRSA. 02/26/2013

- Quality Monitoring Program of Water from Los Molinos Reservoir. Articulation and Institutional Synergy for the Water Resources Preservation. Cossavella A, Bazan R. 2018

- Limnology course. Córdoba National University, UNC, 2018

The arterioles (small arteries) leading to an organ, constrict in order to decrease flow to the organ. To shut down an organ, blood flow is reduced naturally to 2.80% of its original value. By what factor did the radii of the arterioles constrict? Penguins do this when they stand on ice to reduce the blood flow to their feet.

Answers

The final radii of the arteriole is reduced by the factor of 0.409 after the constriction of the arteriole.

The flow rate is defined as the amount of fluid flow through the artery in the given time period at the cross-sectional area.

Computation for the radii of constricted arterioles

The flow rate for the artery is given by:

$Q_1=(\pi Pr^4)/(8\eta l)$

Where, P is the pressure, r is the radius, $\eta$ is the viscosity, and l is the length.

The value of flow rate is reduced to 2.80 % of its natural values. The reduced flow rate is given as:

$Q_2=Q_1\;*\;(2.80)/(100) \nQ_2=0.028Q_1$

The ratio of the flow rate is given as:

$(Q_2)/(Q_1) =(r_f^4)/(r_i^4)\n\n (0.028\;Q_1)/(Q_1) =(r_f^4)/(r_i^4)\n\n0.028\;r_f^4=r_i^4\n\nr_i=0.409r_f$

The final radii of the arteriole is reduced by the factor of 0.409 after the constriction of the arteriole.

Learn more about flow rate, here:

brainly.com/question/24560420

Answer:

The main factor that causes vasoconstriction is the high concentration calcium inside muscle cells.

Explanation:

When the vessels suffer vasoconstriction, the blood supply is decreased and in this way the heat of the body is maintained. The way this happens is because the blood can no longer reach the surface and therefore decreases outward heat radiation. The main factor that causes vasoconstriction is the high concentration calcium inside muscle cells. There are several factors that cause vasoconstriction, internal or external. Environment is one of the external factors, and what happens to the penguins' feet is an example for it, since they are trying to preserve body heat to survive.

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