Which of the following statements associated with cancer is/are correct? 1. Oncogenes expression and some viral infections can cause cancer 2. In metastasis, the cancer cells spread through the blood and lymphatic system Select the answer using the code given below:
Both 1 and 2
Both statements about cancer are correct. Activation of oncogenes and certain viral infections (such as HPV) are established causes of cancer, and in metastasis, cancer cells spread from the primary tumour to distant body parts through the bloodstream and lymphatic system.
Polynucleotide chain of DNA contains
Cell wall isnotpresent in cells of _______
The process of copying genetic information from one strand of DNA into RNA is termed as
Which one of the following is a feature of Membrane?
Which one of the following statements about starch and glycogen is correct?
Which one of the following statements about variations is not true ?
In ovules of Angiosperms, which one of the following is not a haploid cell?
In the following simplified diagram of at plant cell, five parts / organelles are marked from 1 to 5:

Which one of the following correctly represents the above parts / organelles?
Which one of the following is the correct combination of organelles and their functions?
In plant cells
Which of the following is an epithelial tissue?
I. Squamous
II. Ciliated
Cells of ______ and ______ tissues are living cells.
The process of converting ammonia into nitrates is called:
Which of the following is not true about prokaryotic cells?
Fore limbs of whale, bat, tiger and man are examples of