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scZoUnD [109]
3 years ago
8

Following fertilization and two rounds of cell cleavage, each of the four cells of a frog embryo has a centriole that is prepari

ng for the next cleavage. The centriole in each of these cells can trace its origins back to the original centriole provided by the _______ prior to the first cleavage. Please choose the correct answer from the following choices, and then select the submit answer button. Answer choices secondary oocyte sperm ootid oogonium primary oocyte
Biology
1 answer:
Softa [21]3 years ago
8 0

Answer:

sperm

Explanation:

Centrioles are cylindrical organelles that play a major role during cell division, where they work to form the centrosome which duplicates and moves to opposite ends of the cell. The proximal centriole provided by the sperm cell mediates the separation of chromatids during the first cleavage of the fertilized egg. Upon fertilization, the proximal centriole forms the aster rays where microtubules act as a guide for the migration of the female pronucleus.

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Which of the following statements is a false or incorrect statement?
irakobra [83]

Answer:

The correct answer is option d) "damage to the primary motor cortex results only in the loss of both voluntary muscle control and reflexes".

Explanation:

It is false that damage to the primary motor cortex results only in the loss of both voluntary muscle control and reflexes. Many people that suffer from brain damage by strokes suffer from primary motor cortex damage. This damage not only affects voluntary muscle control and reflexes, as it affects muscles movement of any kind and can affect coordination as well.

8 0
3 years ago
Penguins and orcas are both black and white, have developed fins for rapid swimming and are able to tolerate cold water, but pen
fiasKO [112]

Answer:

Analogous structures

Explanation:

Analogous structures are similar structures that evolved independently in two living organisms to serve the same purpose.

Analogous structures are examples of convergent evolution, where two organisms separately have to solve the same evolutionary problem – such as staying hidden, flying, swimming, or conserving water – in similar ways. The result is similar body structures that developed independently.

In the case of analogous structures, the structures are not the same, and were not inherited from the same ancestor. But they look similar and serve a similar purpose.

For example, the wings of an insect, bird, and bat would all be analogous structures: they all evolved to allow flight, but they did not evolve at the same time, since insects, birds, and mammals all evolved the ability to fly at different times.

8 0
3 years ago
Read 2 more answers
. If this is true, can a person get rid of their excess fat by drinking more water?
saveliy_v [14]

Answer:

The body needs water to burn fat. Upping your water intake may increase lipolysis, the process by which the body burns fat for energy, according to a 2016 mini-review of animal studies published in Frontiers in Nutrition.

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3 0
2 years ago
(HELP ASAP I'LL GIVE YOU BRAINLIEST)
Irina-Kira [14]
A. I believe



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6 0
3 years ago
Place the particular characteristic into the correct corresponding type of dna replication. each characteristic may be used once
torisob [31]

Answer:

This is the remaining incomplete part of the question.

Requires separation of template strand Uses helicase Occurs during interphase of cell cycle Require primers Occurs in nucleus Requires dNTPs Produces Okazaki fragments Requires DNA polymerase Requires Primase Requires Taq DNA polymerase Requires cycles of heating Occurs in cytoplasm Occurs during anaphase of mitosis

Explanation:

Cellular DNA replication                            Polymerase chain reaction

Requires separation of template            Requires separation of template

strand                                                       strand

Requires dNTPs                                       Requires dNTPs

Uses helicase                                           Requires cycles of heating

Requires Primase                                     Require primers

Requires DNA polymerase                      Requires Taq DNA polymerase

Occurs during interphase of cell cycle  

Occurs in nucleus                                    Occurs in test tube

Produces Okazaki fragments

6 0
3 years ago
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