Answer: C. Miller and Urey showed that inorganic compounds could combine to form the building blocks of living cells.
Explanation:
The Miller and Urey were the two scientists who created the atmospheric conditions that were expected to be present on primitive earth. They demonstrated that several organic compounds have been formed spontaneously from the inorganic compounds like water, ammonia, methane and others.
The exposure of mixture of inorganic compounds by the lightening lead to the formation of organic molecules like amino acids which are the building blocks of life. This was similar to the penetration of earth atmosphere by UV radiation producing the organic compounds from inorganic molecules.
Answer: Carolus Linnaeus
Explanation:
The formal system of classification was introduced by a Swiss scientist named Carolus Linnaeus.
He first split living things into a general category called KINGDOM.
- The kingdom is further split into large smaller groups called PHYLUM (for animals) and DIVISION (for plants).
- Each phylum or division is broken down into CLASSES.
- Each class is broken down into ORDERS
- Orders into FAMILIES,
- Families into GENUS
- Genus into SPECIES
Thus, the linnaean system of classification from highest (most general category) to the lowest level is as follows: Kingdom --> phylum/division --> class --> order --> family --> genus --> species.
Answer:
<h2>Lytic cycle: involve that there is rupture( lysis) of the host cell and release many copies of virus.
</h2><h2>Lysogenic cycle: involve the insertion of the nucleic acid of a bacteriophage into host genome, known as prophage.
</h2>
Explanation:
There are many similarities and differences between lysogenic and lytic cycles that;
1. Lysogenic cycle of bacteriophage :
i) in lysogenic cycle: bacteriophage insert its DNA with that of a host, known as prophage and it replicates with host.
2. Lytic cycle of bacteriophage:
i) lytic cycle is that it results in many copies of the virus very quickly and the cell is ruptured and many copies of virus are released.
4. Similarity is that in both cycles bacteriophase inter into the host and use their machinery.
Answer:
sarcomeres
Explanation: A contracting skeletal muscle fiber typically shortens as all of its sarcomeres do this.... Thick and thin protein filaments in sarcomeres interact to cause.... True or false, thick and thin filaments maintain their same length whether the muscle is relaxed or contracted?
Pollution caused the environment to become more darkly colored, so moths were selected to be blacks and greys. Before pollution they were white and lighter colors. <span />
