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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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Observation of Diffusion Rate in Relation to Cell Size
vesna_86 [32]

Explanation:

new cells rather than growing bigger. Why is this ?

There are two main reasons why cells divide rather than continuing to grow larger and larger: ... If the cell grows too large, it will have trouble moving enough nutrients and wastes across the cell membrane. Cell Division. Cell division is the process by which cellular material is divided between two new daughter cells.

Why aren't you made of a few dozen, or a

few hundred cells, instead of trillions?

if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume. When this happens, the cell must divide into smaller cells with favorable surface area/volume ratios, or cease to function. That is why cells are so small.

Why don't single-celled organisms like amoebas and paramecia grow

as big as a human?     again The important point is that the surface area to the volume ratio gets smaller as the cell gets larger. Thus, if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume.

i belive this is just the introduction to the project but here

4 0
3 years ago
Your _____ indicates that the relative humidity is very high. Rain probably _____ occur. anemometer; will anemometer; won't hygr
Kruka [31]
The answer is <span>hygrometer, will.

</span><span>Your <u>hygrometer</u> indicates that the relative humidity is very high. Rain probably <u>will</u> occur. 
Hygrometer is an instrument used for measuring the relative humidity in the atmosphere. If the relative humidity is very high, then it rain will probably occur and vice versa.
Anemometer is an instrument used for measuring wind speed, thus it cannot be the right answer.</span>
4 0
3 years ago
Read 2 more answers
In an ocean ecosystem, which is necessary to begin a food web?
Dmitriy789 [7]

Answer:

Phytoplankton production is necessary to begin a food web in an ocean ecosystem.

Explanation: Hope it helps you :)))))))

Have a good day

7 0
1 year ago
Read 2 more answers
Which of the following statements correctly explains how this process works?​
il63 [147K]
D ……. ensnared a Manama skejbemw
5 0
2 years ago
PLS HELP ME WITH THIS
lyudmila [28]

Answer:

The southern hemisphere is tilted towards the Sun at the point of the year.

6 0
3 years ago
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