Practice mode / Cell Structure and Function Who first observed and thus hypothesized that new cells are formed from previously existing living cell? A Option A: Theodor Schwann and Schleiden B Option B: Rudolph Virchows C Option C: Louis Pasteur D Option D: Both b and c Correct answer B. Rudolph Virchows Show answer Report a problem How we write and check questions
Question 01 / Cell Structure and Function Histone proteins bind tightly to DNA because they are rich in which type of amino acids? A Option A: Positively charged amino acids such as lysine and arginine B Option B: Aromatic amino acids such as tryptophan C Option C: Negatively charged amino acids such as aspartate D Option D: Sulphur-containing amino acids such as cysteine Correct answer A. Positively charged amino acids such as lysine and arginine Show answer Open question
Question 02 / Cell Structure and Function What is the role of telomeres? A Option A: Coding for histone proteins B Option B: Protecting the ends of chromosomes from erosion during replication C Option C: Attaching chromosomes to the nuclear envelope pores D Option D: Joining sister chromatids together Correct answer B. Protecting the ends of chromosomes from erosion during replication Show answer Open question
Question 03 / Cell Structure and Function Which structure is present in a typical animal cell but absent from cells of higher plants? A Option A: Centrioles B Option B: Mitochondria C Option C: Golgi apparatus D Option D: Plasma membrane Correct answer A. Centrioles Show answer Open question
Question 04 / Cell Structure and Function What is the function of nuclear pores? A Option A: Allowing exchange of materials such as mRNA between nucleus and cytoplasm B Option B: Attaching spindle fibres during mitosis C Option C: Producing ATP for the nucleus D Option D: Synthesising proteins Correct answer A. Allowing exchange of materials such as mRNA between nucleus and cytoplasm Show answer Open question
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