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cestrela7 [59]
3 years ago
11

The germinal period ends approximately _____ after conception.

Biology
2 answers:
FinnZ [79.3K]3 years ago
6 0
The germinal period ends approximately two weeks after conception. <span> This </span>stage<span> occurs during the first 2 weeks of development (or the 2nd - 4th weeks of pregnancy). The union of the sperm and egg cell forms a single cell called a zygote. </span>
Lyrx [107]3 years ago
3 0

Answer:

<h2>14 days.</h2>

Explanation:

The germinal period, during Pre Natal development, has a duration of 14 days.  This process starts with conception and ends with the implantation, fertilisation period. The main process that allow all changes is cell division.

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(opening the door) describe the work of at least 3 body organ Systems that work during the process.
My name is Ann [436]
Explanation:

When a person opens the door, he or she uses 3 systems:

1. Nervous system: from the nervous system, neural instructions are generated through electrical impulses towards the muscles of the upper limb so that they make the necessary movements to open the door.

2. Muscular system: through the muscles of the trunk and the upper limb, it generates voluntary movement to open the door.

3. Skeletal system: the bones are the support of the soft tissues and the fulcrum of most of the skeletal muscles. In this sense, it serves as a support for the muscles of the trunk and the upper limb to carry out the movement of opening the door.

we can conclude that the correct answer is:

Answer:

1. Nervous system: instructions are generated from the nervous system by means of electrical impulses towards the muscles of the upper limb so that they carry out the necessary movements to open the door.

2. Muscular system: the muscles of the trunk and the upper limb generate voluntary movement to open the door.

3. Skeletal system: it supports the muscles of the trunk and the upper limb to carry out the door opening movement. It also has joints that help the mechanical movements necessary to open the door.

8 0
1 year ago
PLEASE THIS URGENT PLS HELP
Greeley [361]

Answer:

adaptation is what's happening, and the moths changed color to adapt to the new environment.

because of the smoke, the light colored moths were easily spotted and eaten. but they changed color over time to account for that, turning black to make them harder to spot and eat.

7 0
2 years ago
Which steps do scientists take when investigating the natural world? Check all that apply. Form a question. Develop a hypothesis
ser-zykov [4K]

All of the above. Hope this helps :)

8 0
3 years ago
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RNA synthesis is always 5' to 3' because: A. the unwinding of the double-stranded DNA can only move one direction B. the structu
avanturin [10]

Answer:

The correct answer is option E. "nucleotides can only be added to an available 3'-OH group on the transcript terminus".

Explanation:

RNA synthesis is catalyzed by an enzyme called RNA polymerase. RNA polymerase always catalyze the synthesis of new RNA from 5' to 3' because nucleotides can only be added to an available 3'-OH group on the transcript terminus. This has been confirmed in labeling experiments with γ-32P substrates which establish the presence of a triphosphate moiety in transcripts with either pppG or pppA.

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3 years ago
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astraxan [27]

Answer:

5. Plant Cells

6 a. Flagella

6 b. Cilia

7. Vacuole

8. ?

Cell Types

1. Eukaryote

2.  Prokaryote

5 0
3 years ago
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