Answer:
Organs are composed of tissues that are composed of subunits called cells.
Explanation:
In biology, there are five levels of organization that makes up living organisms. These five levels of organization make up one another in the following ascending hierarchical order:
Cell → Tissue → Organ → System → Organism
Based on this hierarchy, cells make up tissues, tissues make up organs, organs make up systems, and systems make up an organism. According to this question, the most accurate description of the levels of biological organization in the option is "Organs are composed of tissues that are composed of subunits called cells".
Answer:
During interphase, replication of the genome DNA occurs during S phase of the cell cycle.
Explanation:
S phase is also called synthesis phase. S phase occurs between G1 and G2 phase of interphase. S phase is the second stage of interphase which occurs before mitosis process of cell division. The cell spends most of the time in interphase where replication of DNA occurs. In this replication, a copy of DNA molecule is produced which is distributed in the daughter cells after mitosis cell division occurs.
The answer is RNA polymerase binds to a promoter region of DNA.
A promoter region of DNA is the site of initiation of gene transcription. For transcription to start, firstly, RNA polymerase must bind to a promoter region of DNA. RNA polymerase is an enzyme responsible for a synthesis of RNA and it enables nucleotides to covalently link together. When RNA polymerase reaches a terminator region, premature RNA frees. Further, <span>introns are edited out of the premature RNA, and mature RNA is synthesised.</span>
Explanation:
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6CO² + 6H2O = C6H12O6 + 6O2
Important note: Do NOT write an equal sign whenever you write it, make sure it's an arrow, otherwise the answer will be wrong. And if you use and equal sign in an exam, then you will get 0 marks. The reason I used an equal sign was because I couldn't find an arrow on my keyboard.
Answer: The lock-and-key mechanism is usually associated with the complementary shapes of an enzyme with a single substrate wherein the lock that is being referred to is the enzyme and the substrate is the key. One right sized substrate (key) fits into the active site (key hole) of the enzyme (lock).