Answer: 244
Explanation: im built different
Temperature, pressure and composition.
Answer:
D. mass feeder
Explanation:
A) suspension feeder
B) fluid feeder
C) deposit feeder
D) mass feeder
<em>Suspension feeder requires capturing of food that are suspended in water through the use of specialized organs.</em>
<em>Fluid feeding involves feeding on liquid (such as blood) emanating from other organisms.</em>
<em>Deposit feeding involves feeding on sediments</em>
<em>Mass feeding involves ingestion of scraps of different food materials.</em>
Hence, the correct option is D.
Answer:
four oxygen molecules
Explanation:
The hemoglobin molecule has four binding sites for oxygen molecules: the iron atoms in the four heme groups. Thus, each Hb tetramer can bind four oxygen molecules.
The correct answer is: b. It is free to bind to another promoter and begin transcription
Transcription is the first step of gene expression in which DNA molecule is copied (transcribed) into RNA (mRNA) by RNA polymerase. The process of transcription is divided into three phases:
1. Initiation
• RNA polymerase with transcriptional factors bind to gene promoter
• RNA polymerase unwinds DNA double helix (transcription bubble is formed)
2. Elongation
• RNA polymerases adds nucleotides complementary to DNA
3. Termination
• RNA polymerase gets to stop codon (transcribes a sequence of DNA known as a terminator)
• Formed complementary RNA strand is released from DNA-RNA complex.
RNA polymerase is also released and can transcribe some other gene by binding to its promotor. RNA polymerase will transcribe just the genes whose products are needed at a particular moment.
