Questions

Yes, plant cells have Mitochondria.

While plant cells have chloroplasts to photosynthesize, they also require ATP for cellular functions, and do use oxygen to break down some of the sugar they produce in order to generate that ATP. They need mitochondria for this.

In particular, at night when there is no light, plants undergo cellular respiration since there is no sunlight to photosynthesize.

They do, however, produce far more sugar and oxygen through photosynthesis than they use up in respiration.

ACID means (Atomicity, Consistency, Isolation, Durability) is a set of properties of database transactions intended to guarantee validity even in the event of errors, power failures, etc.

In the context of databases, a sequence of database operations that satisfies the ACID properties and, thus, can be perceived as single logical operation on the data, is called a transaction. For example, a transfer of funds from one bank account to another, even involving multiple changes such as debiting one account and crediting another, is a single transaction.

It has been said that the creation of NASA was due to the space exploration race between the US and the Soviet Union. One of the drives to the creation of NASA is the launching of Sputnik on October 4, 1957.

Since then, further explorations have been made by the agency.

The Project Risk Management Processes include the following:

Risk Management Planning - Deciding how to approach , plan, and execute the risk management activities for a project

Risk Identification - Determining which risks might affect the project and documenting their characteristics.

Qualitative Risk Analysis - Prioritizing risks for subsequent further analysis or action by assessing and combining their probability of occurrence and impact

Quantitative Risk Analysis - Numerically analyzing the effect on overall project objectives of identified risks

Risk Response Planning - Developing options and actions to enhance opportunities , and to reduce threats to project objectives.

Risk Monitoring and Control - Tracking identified risks, monitoring residual risks, identifying new risks, executing risk response plans, and evaluating their effectiveness throughout the project life cycle.

The processes in the controlling group are Verify Scope, Control Scope, Control Schedule, Control Costs, Perform Quality Control, Report Performance, Monitor and Control Risks, and Administer Procurements.

In the early 1950s two scientists, Rosalind Franklin and Maurice Wilkins, studied DNA using x-rays. Franklin produced an x-ray photograph that allowed two other researchers, James Watson and Francis Crick to work out the 3D structure of DNA. The structure of DNA was found to be a double helix.