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3 years ago

Describe one major change that occurred in the development of the modern atomic model.

Biology

1 answer:

NNADVOKAT [17]3 years ago

5 0

Answer:

The one major change that occurred was the placement and organization of the electron.

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Oswald Avery used different types of enzymes in his experiments to denature molecules including proteins and DNA. This way, he c

Neporo4naja [7]

The correct answer is A.
Oswald Avery applied several biochemical techniques to large cultures of bacteria in order to extract and purify the "transforming principle". Their experiments showed that most probably the "transforming principle" was DNA. One of the observations leading to this conclusion was that enzymes that degrade proteins or RNA (such ribonucleases) had no effect on the "transforming principle". On the contrary, enzymes degrading the DNA destroyed the extract's transforming capacity.

3 0

3 years ago

If an organism had 30 chromosomes in its somatic cell, the blood cells of that organism should have

Ludmilka [50]

Answer:

30 chromosomes: the blood cells are somatic cells too

7 0

2 years ago

The nitrogen base pairs in the DNA molecule are adenine and or cytosine and .

Dominik [7]

The nitrogenous bases Adenine form two hydrogen bonds with thymine and the cytosine form three hydrogen bonds with the guanine. Simply, A combines with T and G combines with the C. It is often called as a complementary base pairing because of each base pair bonds only with its specific complementary base partner in a DNA molecule.

5 0

3 years ago

someone please help me with Part A and B on biology please i really need help will give brainliest read hard and rotate phone i

finlep [7]

<em>Hi there, I come in behalf of jcherry99,</em>

So, first question -

This shouldn't be that much of an issue, since we have the text to help us out, but I'll try breaking it up into more simpler words:

The placenta is incide the uterus, where the baby starts forming. As you might already know, babies do not eat while they're inside woman's bellies:

So how do they feed?

They feed throught the umbilical cord.

So why is the placenta there? Why would the baby want anything apart from food?

The placenta, instead of trading food with the baby, regulates temperature, supplies it with nutrients, exchanges gas with the mother (which the mother later exchanges with the environment) and gets rid of waste.

And, food is not everything for a baby that is in the urge of developing complex muscles, bones, etc.

Second "question" -

I do not actually know what I'm supposed to do, since there is no question. But I can tell you this - the information contained in part B is correct:

The amnioic sac provides babies with a liquid which allows him to move freely in the uterus, which is very helpful. But, note that he doesn't start moving randomly, he is always in a fetus or similar-to-fetus position.

Hope it helped,

BioTeacher101

6 0

2 years ago

How many three fourths are in five halves?

marishachu [46]

To know how many $\frac{3}{4}$ are in $\frac{5}{2}$ we can simply divide $\frac{5}{2}$ by $\frac{3}{4}$ .
$\frac{ \frac{5}{2} }{ \frac{3}{4} }$ = $\frac{5*4}{2*3}$ = $\frac{20}{6}$ = $\frac{10}{3}$
final result: 3,3333...

3 0

3 years ago