Answer:
Certain fossils, called index fossils, help geologists match rock layers. To be useful as an index fossil, a fossil must be widely distributed and represent a type of organism that existed for a brief time period.
Answer and Explanation:
The cell was placed in a hypertonic solution. Glucose is a monosaccharide while starch is a polysaccharide. The concentration on the outside is higher compared to that on the inside. The cells have cell membrane that is semi-permeable.
Movement of molecules is dependent on the concentation gradient. However, the size of molecules determine the diffusion rate. Small and light molecules diffuse faster than large and heavy molecules thus glucose diffused faster than starch.
The cell membrane being permeable suggested that it allows molecules of small sizes to pass but not large ones.
The way that I know it is that cells make up tissue, tissue makes up organs, and organs make up organ systems.
Isobutanol is what can be produced by Cyanobacteria.
Answer:
Throughout the reflection, make sure you have a copy of the Student Guide and your data tables. Complete the paragraph by using the drop-down menus.
In this lab, you determined the relative ages of rock layers using the principles of relative dating. The
✔ law of superposition
says that a rock layer found closer to Earth’s surface is
✔ younger than
a rock layer that is deeper in Earth’s surface. The
✔ principle of cross-cutting relationships
states that intrusions are
✔ younger than
the rock layer they cut across. You also determined the absolute ages of rock layers using a
✔ mass spectrometer
. The data you gathered helped you identify an unknown fossil.
Explanation:
the checked ones are the right answers
