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Volgvan
3 years ago
11

What is a blastocyst ?

Biology
2 answers:
alexdok [17]3 years ago
7 0
The correct answer is <span>hollow ball of cells formed after a fertilized cell undergoes cell division. 

It is found in the earliest development of mammals and an embryo forms out of it. 

</span><span>The definition of blastocyst 
 mammalian blastula in which some differentiation of cells has occurred.</span>
igor_vitrenko [27]3 years ago
7 0
The correct awnser is D hope that helps 
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Muscle cells are also called fibers because they are like tissues and move easily
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3 years ago
What 2 main reactions take place in photosynthesis
Juli2301 [7.4K]

Answer:

Light-dependent and Light-independent reactions

Explanation:

Light-dependent reactions capture the energy of light and use it to make ATP and NADPH. The light-independent reactions use ATP and NADPH to capture and reduce carbon dioxide.

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List the three function of an arthropod exoskeleton
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protection, support, and muscle attachment

Explanation:

hope this helps!

6 0
3 years ago
A cell with 80 chromosomes undergoes mitosis. How many chromosomes are found in the daughter cells? How many daughter cells are
Natalka [10]

Answer:

1. 80 chromosomes are found in each of the daughter cells. 2. Two daughter cells are produced. 3. The daughter cells are identical to each other.

Explanation:

Mitosis is simply a process of cell division whereby two daughter cells that are genetically identical are produced from a single parent cell. A cell having 80 chromosomes would undergo Mitosis through these various stages:

Interphase: This can be referred to as the rest phase between cell division when mature enough for reproduction. This is a preparatory stage where DNA is duplicated and ready for the division of chromosomes

Prophase: This stage marks the beginning mitosis of the cell with 80 chromosomes. The chromatin threads start a coiling process in which the chromosomes become condensed to enable easy distribution to daughter cells without tangling.  

Prometaphase: This phase commences toward the end of the prophase, where the nuclear envelop breaks down. The chromosomes move toward to the center of the cell.

Metaphase: At this stage, the duplicated chromosomes line up on the mid plane or equator of the cell. During this stage, each chromatid is condensed completely and appears thick and distinct.

Anaphase: At this stage, the chromosomes move toward the poles as each replicated copies of the DNA of the cell ends up on either side of the cell. What we would have here at this stage is an entirely two new sister chromatid having 80 chromosomes. Cytokinesis begins towards the end of this stage as the parent cell cytoplasm divides which also continues at telophase.

Telophase: This is the final phase of Mitosis where two separate nuclei are formed and Cytokinesis takes place to complete the division of the cell to form two daughter cells having the same number of chromosomes. These cells are genetically identical to the original parent cell.

5 0
3 years ago
Carbohydrates are an important type of _ compound.<br><br> A) organic<br> B) lipids<br> D) protein
NeTakaya
Organic is the answer,

As protein is totally something else.

Also lipids are liquid fats, so the answer is organic
7 0
3 years ago
Read 2 more answers
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