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Mama L [17]
3 years ago
12

Who proposed the primordial soup theory

Biology
1 answer:
Free_Kalibri [48]3 years ago
6 0
Alexander l.oparin I looked it up !
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How are humans able to see Rainbows? 
Mrrafil [7]

We see rainbows when the son is behind us and some type of water or rain is in front of us. When the sun light hits a raindrop it's refracted and is changed in direction.




(and we see them with our eyes mannnn or womannnn)

8 0
3 years ago
I need help as soon as possible​
Hatshy [7]

Answer: 1:3

Explanation: I'm here for you buddy

3 0
2 years ago
Staphylococcus aureus is grown in heart-infusion broth at 37°C. If you start exponential phase with 100 cells, and after 90 minu
Nikolay [14]

Answer:

30 minutes

Explanation:

Bacteria reproduce by binary fission, a process by which one parent cell divides to form 2 progeny cells. Because one cell produces 2 progeny cells, bacteria are said to undergo exponential ( logarithmic) growth.

As in the case of staphylococcus aureus, we start with 100 cells ,  and after 90 minutes number becomes 800 that means  , firstly the cells doubled (100 x 2 = 200 ) after 30 minutes. Again after 30 minutes they doubled ( 200 x 2 =400 ) and again after 30 minutes they doubled (400 x 2 = 800). So in 90 minutes 100 cells became 800 cells.

Hence the generation time for S.aureus is 30 minutes.

8 0
3 years ago
What is the name of each labeled part? <br> A: <br> B: <br> C: <br> D: <br> E:
Kobotan [32]

Answer:

A: dedrite

B: cell body

c: axon terminal

d: axon

e: nucleus

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I got the question right.

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7 0
2 years ago
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Why is a longitudinal study better than a cross-sectional study for examining how many years cancer survivors stay in remission?
Liono4ka [1.6K]
<span>A cross-sectional study examines all of the participants at one time. So for a cross-sectional study of cancer survivors, we would gather some sample of former patients and find out how long they have been in remission.

The problem with that cross-sectional design is we would be missing the people whose cancer had returned and caused them to die before our experiment started; we would have introduced a problem called "survivor bias" by only counting people who were STILL in remission and still alive.

A better experiment will use a longitudinal design of enrolling people whose cancer has just gone into remission, and following them to see how long they stay healthy.</span>
7 0
3 years ago
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