B. Without enzymes, chemical reactions would not occur quickly enough to sustain life.
Answer:
Because the tree is rooted, all branches share a common ancestor.
All organisms have some sort of cellular structure/organization.
If the organisms contain RNA, they share the same four nitrogen bases.
Explanation:
The tree is rooted means that they are sharing common ancestor of all the species which are present in the phylogenetic tree, it shows the evolutionary relationships between the groups of species.
The level of organization is found in an organism that is organized from the small form to the large form such as organelle form cells, cells form tissues, tissues form organs, etc.
If the organisms contain RNA, they share the same four nitrogen bases because RNA contains these 4 nitrogenous bases: Adenine, Cytosine, Uracil, and Guanine.
Answer: Coronary Sulcus
Explanation:
The atria and ventricles are separated externally by deep coronry sulcus.
Coronary sulcus is also known as atrioventricular sulcus which expands around the circumference of the heart. Coronary sulcus are of two types including posterior interventricular sulcus and anterior interventricular sulcus which are present between the right and left ventricles on the posterior surfaces and anterior surfaces of the heart.
These sulcus are made up of adipose connective tissues and supply and drain blood in the heart.
Hence, coronry sulcus separates atria and ventricles externally.
<span>Answer: Aerobic bacteria cause an infection on the surface of the skin, and anaerobic bacteria cause an infection in a heart muscle.</span>
An aerobic bacteria can survive and grow in a oxygenated environment. A perfect environment is the skin because it's in contact with a lot of oxygen.
On the other hand, an anaerobic bacteria cannot grow in the presence of oxygen. So for them to cause an infection, they need to be in a place without this gas, just like the heart which a deep tissue.
