Answer:eukaryotic cells
Explanation:One of the main differences between prokaryotic and eukaryotic cells is the nucleus. Also prokaryotic cells lack an organized nucleus while eukaryotic cells contain membrane-bound nuclei (and organelles ) that house the cell's DNA and direct the synthesis of ribosomes and proteins.
Answer:
a. F. W. Went isolated the chemical substance responsible for
communicating stimulus information- TRUE
b. The chemical substance responsible for communicating stimulus
information is a hormone- TRUE
c.Charles and Francis Darwin confirmed that the tip of a plant stem is
responsible for initiating the phototropic response- TRUE
d.When the tip of a stem is covered with a transparent cap, the stem bends
toward the light source anyway- TRUE
e. When the base of a stem is covered with an opaque shield, the stem
bends away from the light source- FALSE
f. An example of another control mechanism is that some plants require
more than 12 hours of darkness to produce flowers- TRUE
Option c. dendrochronology
tree rings or dendrochronology they allow to use it in calibration for carbon-14 on temporal placements of fragments of wood (from long dead trees).
Example Bristle cone pines (1957) 4723 years old
Answer:
43%
Explanation:
When you collect blood in a tube and centrifuge it, the elements that compose it separate in three distinct layers:
- Plasma: water, proteins, nutrients.
- Buffy coat: white blood cells, platelets.
- Hematocrit: red blood cells.
If 56% of the blood sample is plasma and 1% is white blood cells and platelets, then the hematocrit is 100% - 56% - 1% = 43%.