Answer:
Animal cells have small vacuoles because they don't need to store as much water as other organisms such as plants.
Explanation:
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Answer:
Which of the following molecules do you think would make good antigens for recognizing an extracellular pathogen? Write a brief explanation of why
Explanation:
Answer:
In most cells, DNA directs the production of a molecule of mRNA which then enters a ribosome. The ribosome produces the final product, a protein. Retroviruses do the opposite. They use the enzyme reverse transcriptase to use a template of mRNA to produce DNA.
Explanation:
The central dogma of molecular biology describes how a cell uses its genetic information to synthesize a protein. The first step called 'transcription' consists of using an RNA polymerase enzyme and a fragment of DNA (i.e., gene) as a template to synthesize an RNA molecule, usually a messenger RNA (mRNA). Subsequently, the genetic code in the mRNA sequence is read by the ribosomes in order to produce a protein, a process known as 'translation'. Retroviruses are viruses that have the ability to integrate into the host genome by using a reverse transcriptase enzyme that allows reverse transcription of mRNA to complementary DNA, which then integrates into the host's genome.
Hi, woody plants are primarily composed of xylem cells with cell walls made of cellulose and lignin .
Answer:
a creeping horizontal plant stem or runner that takes root at points along its length to form new plants.
Explanation:
