A.
fossil records <--- thats what i think
B.
radiometric dating
C.
extinction
D.
geologic time scale
Answer: B. radiometric dating
Radiometric dating is an aging process which is used to age rocks and other objects associated with them. This is based upon the decay process of radioactive isotopes present in the rocks. The radioactive decay is the process in which an unstable nucleus loses it's energy in the form of emerging radiation. The age of the typical rock is determined by the half life of the decayed products.
Answer:
Stem cells are self-renewal undifferentiated cells present in the human body. Undifferentiated means that they can divide and differentiate into many cell types of the body depending upon the differentiating potency of the stem cell.
If scientists could regulate the process of differentiation, they can able to differentiate a stem cell into a cell type of interest such as cardiac cell.
These cells are then can be used to replace the damaged or dead cells present in the body.
Thus, it can help in the treatment of diseases such as cardiovascular disease.
stem cell can differentiate to form heart muscle cells.
Answer:
Is made of phospholipids
Explanation:
The cellular compartment of all eukaryotes is bounded by a membrane called cell/plasma membrane. The membranes in cells are similar in structure and majorly composed of phospholipids that builds it.
The phospholipid component are arranged in two adjacent layers in biological membranes, hence, called phospholipid bilayer. The phospholipid bilayer is said to be AMPHIPATHIC because it contains two hydrophobic fatty acids and a hydrophilic phosphate head in its structure. This amphipathic nature of the cell membrane confers semi-permeability of substances upon it.
leaf bases attached opposite to each other on the branch.
A dichotomous key is an identification technique that repeatedly divides groups of organisms into two categories.
More details regarding the unique characteristics of a given organism are disclosed with each successive division. Once the organism no longer exhibits all of the chosen traits in concert with any other organism, it has been recognized.
In order to identify specimens with a dichotomous key, it is recommended to employ immutable traits (i.e. features that do not change). Size, coloration, and behavioral habits can all change across people and over the course of a lifetime.
Therefore, leaf bases attached opposite to each other on the branch.
To learn more about Dichotomous key, refer to the link:
#SPJ6
Answer:
Are the leaf bases attached opposite to each other on the branch? Answer C 2020
Explanation:
a) Glycogen
b) Starch
c) Cellulose
d) Chitin
I believe it would be C) Cellulose. As this is one of the essential components found in the cell wall of plant cells.
I belive the answer is C) Cellulose :)
No, because histone modifications do not affect transcription
No, because the results demonstrate only a correlation between altered histone modifications and reduced transcription
Yes, because the observed changes in histone modifications are consistent with reduced transcription.
Yes, because histone modification is the only regulatory mechanism that could affect transcription