Answer the following question given this paragraph: Evolution of Gene Regulation Prokaryotic cells can only regulate gene expression by controlling the amount of transcription. As eukaryotic cells evolved, the complexity of the control of gene expression increased. For example, with the evolution of eukaryotic cells came compartmentalization of important cellular components and cellular processes. A nuclear region that contains the DNA was formed. Transcription and translation were physically separated into two different cellular compartments. It therefore became possible to control gene expression by regulating transcription in the nucleus, and also by controlling the RNA levels and protein translation present outside the nucleus. Some cellular processes arose from the need of the organism to defend itself. Cellular processes such as gene silencing developed to protect the cell from viral or parasitic infections. If the cell could quickly shut off gene expression for a short period of time, it would be able to survive an infection when other organisms could not. Therefore, the organism evolved a new process that helped it survive, and it was able to pass this new development to offspring. Q: Prokaryotic cells can only regulate gene expression by controlling the amount of what? Choices: - folding - translation - RNA processing - transcription A:
transcription
(Question)
Answer the following question given this paragraph: The electrode at which reduction occurs is called the cathode . The cathode gradually increases in mass because of the production of copper metal. The concentration of copper(II) ions in the half-cell solution decreases. The cathode is the positive electrode. Q: What is the electrode at which reduction occurs called? Choices: - reducthode - anode - cathine - cathode A:
(Answer)
cathode
Ques: Answer the following question given this paragraph: Another way ocean water moves is in currents. A current is a stream of moving water that flows through the ocean. Surface currents are caused mainly by winds, but not the winds that blow and change each day. Surface currents are caused by the major wind belts that blow in the same direction all the time. Q: What is a stream of moving water that flows through the ocean? Choices: - creek - tidal wave - waterfall - current A:
Ans: current
(Q).
Answer the following question given this paragraph: Kidney diseases include kidney stones, infections, and kidney failure due to diabetes. Kidney failure may be treated with dialysis. Q: Which organ's diseases include kidney stones, infections, and kidney failure due to diabetes? Choices: - lungs - heart - pancreas - kidney A:
(A).
kidney
Ques:Answer the following question given this paragraph: Glaciers modify the landscape by erosion. They also modify the landscape by deposition. Glaciers carry an enormous amount of material and dump it. The features they leave behind show where they were and what happened as they were melting away. Q: Glaciers modify the landscape by what? Choices: - silt - sediment - truncation - erosion A:

Ans:erosion
Ques:Answer the following question given this paragraph: In this lesson, you learned about chemical bonds in a water molecule. The bonds form between atoms of hydrogen and oxygen when they share electrons. This type of bond is an example of a covalent bond. Q: How do you calculate the atomic mass of an element? Choices: - add neutrons and electrons - count the electrons - multiply protons by neutrons - add the protons and neutrons together A:

Ans:
add the protons and neutrons together