Answer:
1 -
a. Arrow pointing inward (water goes into the cell)
b. Hypotonic solution
2 -
a. Arrow pointing outward (water goes out of the cell)
b. Hypertonic solution
3 -
a. Equal sign (no arrow)
b. Isotonic solution
4 -
a. Arrow pointing outward (water goes out of the cell)
b. 10% h20 70% solute
c. Hypertonic solution
5 -
a. Arrow pointing inward (water goes into the cell)
b. 50% h20 (in the cell) 20% h2o (out of the cell)
c. Hypotonic solution
6 -
a. Arrow pointing outward (water goes out of the cell)
b. 30% solute (in the cell) 80% solute (out of the cell)
c. Hypertonic solution
Tiktaalik roseae was discovered in sediments on Ellesmere Island in Nunavut, Artic Canada (Ahlberg and Clack, 2006). The sediments it was found in are from what is known as the Fram Formation, which is thought to be deposits of lowland streams (Murphy, 2005). hope it helps
An ant is considered a scavenger!!
Hope this helps!
<span>A. Redwood trees
K-selected species are living organisms that are usually larger than those in the r-selected species</span>
Answer:
There are two possible answers: Deep-sea vents provided the energy needed for the first organic compounds to form OR self-replicating RNA molecules passed on genetic information.
Explanation:
The reason for the first answer is due to the hypothesis that indicates that life (organic molecules) arose from inorganic molecules synthesized from the amino acids in those energy vents. This is called the metabolism first hypothesis. The Miller-Urey Experiment provided evidence that organisms could rise from inorganic molecules (they simulated under the conditions you would see on early Earth). The second hypothesis is the RNA World hypothesis (second answer) which suggests that the formation of RNA that could replicate (possible due to mutation or evolution), led to life that could preserve its genetic integrity through replication (greater stability to the organism) and create lipid bi-layer membranes/other organelles. Some scientists support the Metabolism First Hypothesis, while others are skeptical (this goes for the RNA World Hypothesis as well). However, the RNA World Hypothesis is for more reasonable in the fact that its main point is the fact that RNA molecules were able to replicate and maintain genetic stability despite early Earth conditions. Although either hypothesis could explain why all organisms share the same genetic code, the RNA World Hypothesis better explains the universality of DNA/RNA of genes that we see today.
