It's Gel electrophoresis. Just took the test!
-Jazzy
Answer: Different liquids will evaporate differently depending on the force of attraction between the molecules of the liquid. The weaker the force of attraction the higher the rate of evaporation and vice versa.
In Sea water the water molecules are attracted to the salt ions and thus it requires more energy to evaporate.
Algae and nitrogen-fixing bacteria are photosynthetic organisms.
Answer:
1. Are usually single-celled.
2. Do not contain membrane-bound organelles
3. Have DNA located in cytoplasm
Explanation:
Prokaryotic cells are single-celled organisms which have the following characters:
1. They lack a true nucleus and hence, they do not have their genetic material enclosed in a nuclear membrane-bound nucleus, rather it is present in the cytoplasm.
2. They lack all the membrane-bound organelles such as mitochondria, endoplasmic reticulum, etc.
3. They are usually. very small in size and hence are microscopic.
Examples include all the bacterias.
The answer is C Heterozygous
Explanation: the inability to roll your tongue is a recessive trait. Since both parents are heterozygous, they carry that recessive gene, so their child will have a 25% chance of having that recessive trait; and therefore, unable to roll their tongue.
