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Quiz Previous PageNext Page Page 3 of 11 Question 8 (1 point) What are two atoms

ID: 80682 • Letter: Q

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Question 8 (1 point)

What are two atoms with the same atomic number, but different mass numbers, called?

Question 8 options:

radioactive

isotopes

proteins

electrons

nuclei

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Question 9 (2 points)

If the sequence on one strand of DNA is TTACAGGTCCCA, what is the sequence of the complementary strand?

Question 9 options:

UUACAGGUCCGT

AATGTCCAGGGT

AAUGUCCAGGGU

GGAGTGGACCCA

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Question 10 (1 point)

Which of the following organisms are capable of cellular respiration?

Question 10 options:

Poplar Trees

Portabella Mushrooms

Polar Bears

Brown Algae

All of these organisms are capable of cellular respiration

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Explanation / Answer

8. What are two...................called

Isotopes

Isotopes of an element have same atomic number (i.e. the number of protons), but vary in the number of neutrons and hence have different mass numbers. For e.g. carbon has two isotopes C-12 and C-14. Both these have same number of protons (6, which is the atomic number of carbon) but have different number of neutrons ( 6 in case of C-12 and 8 in case of C-14), which results in different mass numbers.

9. In DNA, A pairs with T and C pairs with G. Hence

Template strand                                                                 TTACAGGTCCCA

Complementary strand                                                      AATGTCCAGGGT

10. Which............................. cellular respiration?

All of these organisms are capable of cellular respiration

All of these organisms make use of cellular respiration. During this process the organisms break down the nutrients into simpler compounds along with production of energy in a controlled manner. This energy is stored in the form of ATP, whic in turn is used by the cell for carrying out it's metabolic activities.