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1) you have a technique that allows you to measure the amount of dna in a cell nucleus you use this technique to establish that a human sperm cell contains 3.65 picograms of dna

a) How many picograms of dna would you expect to find in a nucleus of a human somatic cell at G1 of interphase?

b) At G2 of interphase?

c) at late telephase of meiosis I?

d) at late telaphase of meiosis II?

2)

A horse has a diploid complement of 64 chromosomes including 36 acrocentric chromosomes. The donkey has 62chromosomes including 22 acrocentric chromosomes.a.Predict the number of chromosomes found in the hybrid offspring (mule) produced by mating a male donkey witha female horse.b.Why are mules usually sterile (i.e. incapable of producing viable gametes)?

Mules are considered hybrids, not a separate species. Mules result from the joining of gametes from a female horse (n=32) and a male donkey (n=31).

Define hybrid. What would the diploid (2n) number be for the mule that would be produced in the mating of the female horse and male donkey described above?

Mules are sterile, meaning they cannot produce gametes of their own. In terms of chromosomes, explain why this could be.

For each concept, explain whether it would suggest that a mule is a separate species or not a separate species.

Biological Concept:

Mate-Recognition Species Concept:

Genetic Species Concept:

Morphological Species Concept:

Phylogenetic Species Concept:

1. Explain how evolution is one of the great unifying theories of biology, accounting for both the unity and diversity of life.
2. How does the biological species concept differ from the earlier typological concept of species? Why is it considered to be a more modern concept of species?

metabolism​ model and system biology

A graph is naturally a simplification of real biological processes. Such as the protocol in systems biology methods are a potential remedy to oversimplification, and can indeed produce testable predictions.

(i) What are the important limitation of using a simple unweighted graph to model metabolism, that systems-biology approaches aim to address?

(ii) And what are the important limitation of systems-biology approaches? In other words, what is one (of the many!!) reasons why such an approach might give misleading results?

I am taking the course for informatics in application to biological systems. And, my textbook is Mathematical Physiology, J. Keener, J. Sneid, Springer, 2009. And my background is mathematics so, I don't know about biology. My question is that,

"Enzyme inhibition. Competitive and allosteric inhibitors. Describe the mechanisms."

Please tell me what the answer is. Thank you in advance.

If you need assistance on biology and mathematics assignments.

Please contact via Whatsapp 09022025044.

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A wheel of radius 0.700 m, which is movinginitially at 35.0 m/s,rolls to a stop in160 m.

The angular momentum of a flywheel having a rotational inertiaof0.200 kg·m² about itscentral axis decreases from 3.20 to1.600 kg·m²/sin 1.60 s.

1. Cj205 module 7 project 2 help asap

The angular momentum of a flywheel having a rotational inertia of0.180 kg m2 about its axis decreases from 5.00 to 0.70 kg m2/s in1.60 s.
What is the average torque acting on the flywheel about its centralaxis during this period?
Assuming a uniform angular acceleration, through what angle willthe flywheel have turned?(rad)
How much work was done on the wheel?
What is the average power of the flywheel?

A wheel of radius of .5 m is rotating around the symmetry axis with a constant angular velocity 3.0 rad/s with an angular acceleration of 2.0 rad/s2. The moment of inertia of the wheel about the symmetry axis is 5.0 kg m2. What are the kinetic energy and angular momentum of the wheel? What is the net torque acting on the wheel? What is the power delivered by the net torque?

The moment of inertia of a solid cylinder about axis is given by0.5 MR². If this cylinder rolls without slipping, theratio of its rotational kinetic energy to its translational kineticenergy is

A.) 1:1

B.) 2:1

C.) 1:3

D.) 1:2

The moment of inertia of a solid cylinder about its axis isgivenby 0.5 MR^2. If the cylinder rolls without slipping, theratio ofits rotational kinetic energy to its translational kineticenergyis

A wheel accelerates with a constant angular acceleration of4.5rad/s^2. If the initial angular velocity is 1.0 rad/s, what istheangular velocity at t = 2.0 s?

A Ferris wheel rotating at 20 rad/s decelerates with aconstantangular acceleration of -5.0 rad/s^2. How many revolutionsdoes itrotate before coming to rest?

You work for NASA designing a low-cost landing system for a Marsmission. The payload will be surrounded by padding and droppingonto the surface. When it reaches the surface, it will bounce. Theheight and the distance of the bounces will get smaller with eachbounce so that it finally comes to rest on the surface. Your bossasks you to determine how the ratio of the horizontal distancecovered by two successive bounces depends on the ratio of theheights of the two bounces and the ratio of the horizontalcomponents of the initial velocity of the two bounces. After makingthe calculation you decide to check it in your laboratory onEarth.

a) Draw a sketch of the situation, including velocity andacceleration vectors at all relevant times! During what timeinterval does the ball have motion that is easiest to calculate? Isthe acceleration of the ball during that time interval constant oris it changing? Are the time durations of two successive bouncesequal? Label the horizontal distances and maximum heights for eachof the first two bounces.

b) Write down the basic kinematics equations that apply to the timeintervals you selected, under the assumptions you have made.

c) Write and equation for the horizontal distance the ball travelsin the air during the first bounce, in terms of the initialhorizontal velocity of the ball, its horizontal acceleration, andthe time it stays in the air before reaching the groundagain.

d) The equation you just wrote contains the time of flight, whichmust be re-written in terms of other quantities. Determine it fromthe vertical motion of the ball. First, select an equation thatgives the ball's vertical position during a bounce as a function ofits initial vertical velocity, its vertical acceleration, and thetime elapsed since it last touched the ground.

e) How's the ball vertical position when it touches the ground atthe "end" of its first bounce related to its vertical position whenit touched the ground at the "beginning" of its first bounce? Usethis relationship and the equation from step 4 to write one/twoequation involving the time of flight.

f) Combine the previous steps to get an equation for the horizontaldistance of a bounce in terms of the ball's horizontal velocity,the height of the bounce, and the ball's verticalacceleration.

g) Repeat the above process for the next bounce; take the ratio ofhorizontal distances to get your prediction equation.

PLEASE HELP ASAP

Part A

Part B

Lesson Review

Directions: Use the "Comparing constant acceleration in 1-dimension and rotational kinematics" and "Disk on a turntable" simulations to answer the questions in both parts below. Use complete sentences when appropriate.

Part A: Comparing constant acceleration in 1-dimension and rotational kinematics

In this simulation, you can compare the motion of a ball, which is influenced by gravity alone, to that of a disk, which has a constant angular acceleration directed counter-clockwise.

You can see the ball's motion diagram, with the position marked at 0.5 s intervals. You can also see the disk's motion diagram, with the position marked at 0.5 s intervals. You can then either see graphs of the ball's position, velocity, and acceleration, all as a function of time, or graphs of the disk's angular position, angular velocity, and angular acceleration, all as a function of time.

Go to the Comparing constant acceleration in 1-dimension and rotational kinematics simulation. Play with the simulation for a couple of minutes and explore what you can do.

1. The ball in the simulation is accelerated by the force of gravity, with the acceleration set to 10 m/s2 down. What do you think could cause the constant angular acceleration of the disk?

2. Compare the motion of the ball and the disk, and compare the graphs. What are some things that are the same for these motions/graphs?

3. What are some things that are different for these motions/graphs?

Part B: Disk on a Turntable

This is a simulation of a disk on a turntable. The turntable starts from rest, and then experiences a uniform angular acceleration. The disk on the turntable keeps up with the turntable for a while, but then slides off the turntable. Note that the disk's motion after it starts to slide is something of an approximation.

Go to the Disk on a Turntable simulation. Play with the simulation for a couple of minutes and explore what you can do. Adjust the sliders for "mu" and "radius." Let the simulation run for a few minutes after each adjustment.

4. How does the radius (the distance of the disk from the center of the turntable) and the coefficient of static friction (mu) affect when the disk begins to slide on the turntable?

5. Why does the graph of the actual force of friction have the shape it does?

6. What determines the value of the maximum possible force of static friction?

When you press Play, the turntable starts to rotate, its rotation rate increasing steadily as time goes by. While the disk rotates with the turntable, without sliding, the speed of the disk (v) increases linearly. Note the shape of the graph of the force of friction acting on the disk while this is happening.

Once the static force of friction needed to keep the disk moving with the turntable exceeds the maximum possible force of static friction, the disk starts sliding, and the friction force acting on the disk is kinetic (at least until the disk flies off the turntable).

7. Of the choices below, what slider settings will keep the disk moving with the turntable (not sliding) for the longest amount of time?

a. Maximum friction coefficient and maximum radius

b. Maximum friction coefficient and minimum radius

c. Minimum friction coefficient and maximum radius

d. Minimum friction coefficient and minimum radius

8. Using the settings you chose in question 13, what is the longest amount of time you can get the disk to move with the turntable in the simulation, without sliding?

a. about 5 s

b. about 8 s

c. about 9 s

d. a little over 14 s

e. a little under 20 s

9. Note that the simulation does not have a slider to adjust the mass of the disk. If it did have such a slider, what impact would reducing the mass of the disk have on the amount of time the disk moved with the turntable without sliding? Would time increase, stay the same, or decrease? Why do you think this?

Solve the following Organic Chemistry II problem:

Who is the father of chemistry 

Jantar mantar

Hi brother,can you please explain how u got the 3rd position in contributor list,as I have answer a question for 70 points and also uploaded a note for 50 points which is 120 points ,so why not I am appearing on top 10 list?

Please answer me

PLEASE HELP ASAP

Directions: Choose one lab from the list below to complete at home. Follow the steps on the experiment page and use the Lab Report template below. You will submit your Lab Report for grading.

*Please review the materials list on the experiment page before choosing your experiment. All experiments listed below have a materials list that is either under $20, uses materials from around your home, or is free.

**Please review and follow ALL safety guidelines and suggestions on the experiment page.

• The Height Limits and Linearity of Bouncy Balls
• Measuring the Speed of 'Light' with a Microwave Oven
• How Long Will My Sleepy Yo-yo Sleep?
• Mixing Mystery: Why Does Tumbling Sometimes Separate Mixtures?
• Extreme Sounds: Lessons in a Noisy World
• Build a Raft Powered by Surface Tension
• Hit the Slopes: Build Your Own Ski Lift
• Marble Roller Coaster: How Much Height to Loop the Loop?

Note: You may submit answers in the submission box and attach a document with graphs or charts in the same lesson. Just be sure to attach your document AND enter your answers in the submission box before you click on Submit for grading.

We strongly encourage you to complete your work in a wordprocessing document and save it on your computer or in the cloud in case of technology failure. Then copy/paste your answers into the submission box or upload your file. Use the Draft Status to save your work often.

Lab Report Format

Lab Title:

1. Guiding Questions - Create 2 questions you could ask either before, during, or after your experiment. Include the answer to the question, too!

2. Purpose: What is the purpose of the lab? What question is this lab trying to answer?

3. Hypothesis: Create a testable hypothesis to guide your experiment. Write your hypothesis in the “If…, then…” format.

4. Materials: List all materials required for this lab. Include quantities when applicable.

5. Procedure: Create a detailed numbered list of steps describing how to complete the experiment.

6. Data & Observations: Record the observations and data you collected during the experiment. Your data should be presented clearly. You should include a graph of your data or pictures/drawings to represent your observations.

7. Conclusion: Your conclusion should be 3 paragraphs, with 5-7 sentences in each paragraph. Include any sources used for research.

Paragraph 1: Summarize the experiment. Include the question, a brief review of the materials and steps, and your observations/data. If you observed something new, include this in your summary.

Paragraph 2: Review your hypothesis. Do your results support or fail to support your initial hypothesis? Provide evidence from the experiment to explain your answer. Did anything happen that you didn’t expect?

Paragraph 3: Discuss your next steps. Would you do anything differently in this experiment? Include at least one change or update you would make, now that you have your results. Additionally, identify one way the information or concepts from this lab are used in Earth Science applications.

Write the formula for magnessium oxide and write the changes during the reaction?:

2Mg+O²---->2MgO 

During the reaction a white flame and heat is produced 

Write the total surface area of square 

hey about the points or ?

Write the formula for calculate the total resistance in series and also in parallel