Around 40 million years ago
The earliest whales that we think were fully aquatic, that is, they never left the water, are found around 40 million years ago, during the middle Eocene. That means that the transition from terrestrial animals to fully aquatic animals took about 12 million years.
Neurons process and transmit information
Answer: The spellings are wrong. It should be globulin and heme.
Globulin alone is not effective as oxygen carrier because globulin does not have oxygen binding groupband cannot bind oxygen.
Heme alone is not effective as oxygen carrier because the iron present in heme can be oxidized easily and it cannot bind to oxygen.
Explanation:
Globulin are proteins that are present in the blood of humans. It is an oxygen carrier.
Heme is iron containining compound that form the non protein part of haemoglobin and other biological molecules. Heme are responsible for carrying oxygen in the blood.
Answer:
Yes
Explanation:
A high quality DNA sample will have a 260/280 ratio of around 1.8. This value means that the DNA is sufficiently pure and free from other contaminants that could affect downstream experiments and analysis.
The ratio for this sample is 0.489/0.257 = 1.9
This is close to 1.8, and therefore the sample is of sufficient quality ot use downstream.
The identity of the bacterial shape is the following:
a (rod-shaped)- bacillus.
b (spiral-shaped)- spirillum.
c (spherical)- coccus.
<h3>What are bacteria?</h3>
Bacteria are single-celled microorganisms found as free-living or parasites.
They are found in many shapes and sizes.
There are good bacteria that help humans and other animals, and bad bacteria are harmful to the animals.
Thus, the shape of the bacteria area (rod-shaped)- bacillus., b (spiral-shaped)- spirillum., c (spherical)- coccus.
Learn more about bacteria
brainly.com/question/2490932
