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3 years ago

What occurs after cytokinesis is completed at the end of meiosis I?

Chemistry

1 answer:

arlik [135]3 years ago

5 0

Answer. After cytokinesis is completed at end of meiosis - I two haploid cells are formed.on:

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Which of the following is an example of a micro-habitat?

Anna11 [10]

I believe it is d, a microhabitat is a small area which differs somehow from the surrounding habitat. Its unique conditions may be home to unique species that may not be found in the larger region.

3 0

3 years ago

At rest, a neuron has a lower concentration of sodium than the surrounding fluid. The neuron also has a higher concentration of

pshichka [43]

Answer:

a. Remaining at rest requires the use of ATP.

Explanation:

The resting membrane potential is maintained by the sodium-potassium pump. The sodium potassium pump does this by actively pumping sodium ions out of the cell and potassium ions inside the cell in a ratio of 3:2. This movement of ions by the sodium-potassium pump is against their concentration gradient. In a neuron at rest, there are more sodium ions outside the cell than there are inside the cell. Also, there are are more potassium ions inside the cell than there are outside the cell. However, there are ion channels through which these ions enter and leave the cell. Sodium ion channels allow sodium to enter the cell following its concentration gradient, whereas, potassium ion channels allow potassium to leave the cell following its concentration gradient. However, more potassium ions leave the cell than do sodium ions enter the cell because of the higher permeability of the cell to potassium ions.

In order to maintain the resting membrane potential, the sodium potassium pump powered by the hydrolysis of an ATP molecules pumps sodium ions out of the cell and potassium ions into the cell.

Therefore, the correct option is A, as ATP is needed by the sodium-potassium pump in order to maintain the resting membrane potential.

6 0

3 years ago

Frank pulls down on a garage door with a force of 80 N. If the door weighs 210 N, what is the net downward force on the door?

elena-s [515]

Answer:

290 N

Explanation:

Total downward force = Force applied on the door in bringing it down + weight of the door

Total downward force = 80 + 210

Total downward force = 290N

7 0

3 years ago

Read 2 more answers

The Independent Variable is: Kinetic Energy Height Mass Speed

brilliants [131]

The correct answer is height

6 0

3 years ago

Read 2 more answers

Hbr(aq)+h2o(l)→h3o+(aq)+br−(aq) express your answers as a chemical expressions. enter your answers in order given in the questio

tamaranim1 [39]

This is an incomplete question, here is a complete question.

For each reaction, identify the Bronsted-Lowry acid, the Bronsted-Lowry base, the conjugate acid, and the conjugate base.

$HBr(aq)+H_2O(l)\rightleftharpoons H_3O^+(aq)+Br^-(aq)$

Express your answers as a chemical expressions. Enter your answers in order given in the question separated by commas.

Answer : The given equilibrium reaction will be,

$HBr(aq)+H_2O(l)\rightleftharpoons H_3O^+(aq)+Br^-(aq)$

Acid Base Conjugate Conjugate

acid base

Explanation :

According to the Bronsted Lowry concept, Bronsted Lowry-acid is a substance that donates one or more hydrogen ion in a reaction and Bronsted Lowry-base is a substance that accepts one or more hydrogen ion in a reaction.

Or we can say that, conjugate acid is proton donor and conjugate base is proton acceptor.

The given equilibrium reaction will be,

$HBr(aq)+H_2O(l)\rightleftharpoons H_3O^+(aq)+Br^-(aq)$

Acid Base Conjugate Conjugate

acid base

In this reaction, $HBr$ is an acid that donate a proton or hydrogen to $H_2O$ base and it forms $Br^-$ and $H_3O^+$ are conjugate base and acid respectively.

8 0

3 years ago