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Nezavi [6.7K]
3 years ago
5

Describe the development of a human embryo from fertilization to birth.

Biology
2 answers:
Darya [45]3 years ago
6 0

Answer:embryology most likely to be the answer

RSB [31]3 years ago
3 0
So, as you know, when a sperm cells (Male sex cell) meets the Egg cell (Female Sex Cell) it forms something called a zygote. And from that point on, the egg cell reproduces more and more (making more cells) in a type of cell called a stem cell, which can be used for anything the body needs. The newborn babies keep these cells up until birth or the incubation (growth of the baby in the mother's uterus), and then they are ready to be born.
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environmental change that triggers a definite action on the part of the organism serves as a(n) _____. a.stimulus b.response c.e
Mekhanik [1.2K]

The answer is C. An effector is analogous to the way a ligand (of a stimuli) binds to receptors on the surface of the body and triggers an impulse in the neuron. An effector, on the other hand, occurs internally of the body and when the effector molecule binds to the receptors of the organ that it stimulates or suppresses, a  cascade signaling pathway in the cells occurs and the cells/organs responds requisitely.

3 0
3 years ago
Read 2 more answers
Account for the result obtained on the Strip when put in strong salt solution ​
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Answer:

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7 0
3 years ago
What is the correct order of events in the sliding filament theory of muscle contraction? 1. Myosin head binds to actin 2. Calci
valkas [14]

Answer:

The correct order is: 6) Sarcoplasmic reticulum releases calcium ions, 2) Calcium ions bind to troponin, 5) Tropomyosin moves to expose active sites of actin, 4) ATP is split into ADP and P, 1) Myosin head binds to actin, 7) ADP and P released from myosin, 3) Myosin cross-bridges bend, pulling actin toward center of sarcomere.

Explanation:

The ability to contract is an important property of the muscle cells and is fundamental to animals because muscles not only make locomotion possible but are also responsible for the correct functioning of organs (including the heart).

The mechanism behind muscle contraction is the sliding of filaments in a structure called sarcomere, which mostly involves the presence of actin and myosin filaments.

For muscle contraction to happen, there needs to be a <u>stimulus coming from the nerve that innervates said muscle</u>. This stimulus generates the release of <u>calcium ions</u> that will bind to a protein called troponin and will lead to the exposure of the active site of actin so it can bind to the myosin head. <u>This process requires ATP</u>.

7 0
2 years ago
To classify an organism as an invasive species all of the following characteristics must be met EXCEPT:
Sphinxa [80]

Answer:

Must be spread through human actions alone

Explanation:

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2 years ago
What is the third codon in the mRNA you produced in
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Https://www.nature.com/scitable/topicpage/the-information-in-dna-determines-cellular-function-652322... 
If you use this link, it will help you. I do not own this website in any shape or form. I hope this helps!
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3 years ago
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