Answer:
Atoms are the smallest bits of ordinary matter and are made from particles called protons (which carry a positive electrical charge), neutrons (which carry no electrical charge) and electrons (which carry a negative electrical charge).
An element is a substance that is made entirely from one type of atom.
An element is a substance that is made entirely from one type of atom. For example, the element hydrogen is made from atoms containing just one proton and one electron.
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Answer:
a.They each contain a nucleus.
b.They each are smaller than the parent cell, but will grow to a full size.
c.They each contain different combinations of the parent cell’s genetic material.
Explanation:
When a Mother cell divides itself asexually or sexually (typically through the process of Binary Fission or Meiosis or Mitosis) the daughter cells formed inherit the contents and the organnels of the Parent Cell almost equally. This includes the Nucleus and Cytoplasm. The nucleus plays a key role in the development of the Daughter Cells as it directs various processes. Initially, the Daughter cells are smaller than the parent cell due to diversified division but ultimately catch up and grow in the later stages of its life. The daughter cells do contain the same number of chromosomes but may have different sets of them randomly.
An element is the simplest form of matter that has a unique set of properties. Examples of well-known elements include oxygen, iron, and gold (see the figure below). Elements cannot be broken down into a simpler substance.
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Question: Which of the following are appropriate units for power?
A) newton·meter
B) watt
C) H.P./sec
D) joule/sec
Answer:
Watt and Joule/sec are the appropriate units for power.
Explanation:
As per the question, the physical quantity given is power.
The power is defined as the rate of consumption of energy or the rate of doing work.
Let us consider W is the amount of work done by a body in time t .
Mathematically the power of that body is written as -
power 
The unit of work is joule and the unit of time is second.
Hence, the unit of power is joule/sec.
we know that one joule/sec. = one watt.
Hence, watt is also another unit of power. Newton-metre can not be a unit of power . It may be considered as a unit of work.
Similarly H.P/sec is also not a unit of power. Here H.P stands for horse power which is another unit of power . Hence, joule/sec. and watt are the appropriate units of power.
