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SpyIntel [72]
4 years ago
7

The muscle that extends the forearm when doing push-ups is the

Biology
1 answer:
Vedmedyk [2.9K]4 years ago
8 0

Answer:

Biceps brachii

Explanation:

Biceps brachii is the skeletal muscle which is involved in supporting the movement of shoulder and elbow. This muscle is found on the front of the upper arm between the elbow and the shoulder. The functions of this muscle are listed here -

  • It turns the palm upwards
  • It flexes the forearm while lifting an object or performing biceps curl
  • It also assists in forward flexion of the shoulder joint which occurs during bringing the arm forwards and upward.
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A mature ovum produced from division of a primary oocyte has 18 chromosomes. How many chromatids were present in the primary ooc
a_sh-v [17]

72 chromatids were present in the present in the primary oocyte during  prophase 1 of meiosis.

The primary oocyte contains 72 chromatids during prophase 1 of meiosis as the mature ovum has 18 chromosomes.

The primary oocyte contains 72 chromatids , that means it contains 144 chromosomes. During the first meiotic division, it produces one secondary oocyte and one polar body.

The secondary oocyte  has 72 chromatids, which again undergoes second meiotic division and produces mature ovum and second polar body . The mature ovum contains contains 36 chromatids which means it has 18 chromosomes.

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2 years ago
Cell differentiation always involves
mestny [16]

Answer: (C) The production of tissue-specific proteins.

Explanation:

 The cell differentiation is the process in which the cell change from one cell place to another place. It basically occur due to the process of gene expression.

The cell differentiation involve the production of the specific tissue protein known as muscle actin. In cell differentiation, the pluripotent stem cell basically go in the specific differentiation level and then reach in the state of fully differentiation.

The fully differentiation produced a specific function that the production of the protein. Therefore, option (C) is correct.

5 0
3 years ago
Identify the process that does not require phase change.
natima [27]

Answer:

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Explanation:

8 0
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soldier1979 [14.2K]

Answer:

Radioactive Elements

In elements with more than 83 protons, all of the isotopes are radioactive. ... The force of repulsion among all those protons makes the nuclei unstable. Elements with more than 92 protons have such unstable nuclei that they don't even exist in nature.

Explanation:

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3 years ago
Which of the following is responsible for the exchange of gases in a leaf?
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<span>the Stomata </span><span>is responsible for the exchange of gases in a leaf.</span>
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