Actin filaments are found in cells that form cytoskeletal structures. These are generally present below the plasma membrane.
Amoebae move by crawling over a surface (cell crawling), which involves GROWTH OF ACTIN FILAMENTS TO FORM PSEUDOPODIA. Pseudopodium is a bulge in the plasma membrane towards the direction of movement.
The answer is A the only reason I'm typing is because this dumb thing said i had to have 20 characters or more but yeah... its A
Options are not given in the question. The complete question is as following:
Gene expression is often assayed by measuring the level of mRNA produced from a gene. If one is interested in knowing the amount of a final active gene product, a potential problem of this method is that it ignores the possibility of _____.
A) chromatin condensation control
B) transcriptional control
C) alternative splicing
D) translational control
Answer:
D) translational control
Explanation:
Gene expression is the mechanism used in the production of a functional gene product through information from a gene. This results in much more rapid cellular change by direct protein concentration regulation.
Translational regulation refers to regulating the protein concentrations synthesised from its mRNA. This control is of great importance for the cellular response to stressors, signs of growth and differentiation. This results in much more rapid cellular change by direct protein concentration regulation.
Hence, to evaluate gene expression it is important to measure the possibility of translational regulation as most of the time, function of the stop codon is ignored by ribososme which leads to long peptide chains and interfer with gene expression.
So, the correct answer is D).
Answer:
the later stages are small and the tool materials are of better quality than the previous stages.
Explanation:
The stone scrapers and the choppers found at the site of Zhoukoudian points out the fact that Peking men devised several tools for various purposes and to accomplish different tasks. The stones and the bones used to make the tools used to be charred by using the fire. This also indicates that the Peking men had discovered the uses of fire and they used fire for various activities.
Answer: Please refer to Explanation
Explanation:
Stream - A series of connected channels that fills with water.
Rill - A small groove in soil created by runoff.
Gully - A channel of connected grooves created by runoff.
- Occurs when rills get bigger due to more runoff and then connect to become even bigger.
Tributary - One of many channels that connect to form a river.
- Tributaries feed rivers but never the open sea.
