Nucleus. DNA and Ribosomes

What are the correct base pairings in DNA?

Adenine and Thymine

Cytosine and Guanine

A nucleotide triplet codes for…

Amino acid

How do substances pass between the inside of the nucleus and the surrounding cell cytoplasm?

Through nuclear pores

What is the role of the nucleolus in a eukaryotic cell?

To synthesise rRNA

Chromosomes are formed from the nucleic acid DNA. What is the primary function of these chromosomes?

to carry genetic information and allow it to be passed from parent to offspring

The nucleus is surrounded by a double membrane known as the nuclear envelope. What is the function of this membrane?

To separate the contents of the nucleus from the cytoplasm

Where within a eukaryotic cell is chromatin contained?

The nucleoplasm

Which of the following statements is true?
- A nucleus is a cytoplasmic organelle
- A nucleolus plays an important role in the synthesis of proteins

Only the second statement is true

DNA stands for…

Deoxyribonucleic acid

Ribosomes are found in all cells. What is the function of ribosomes?

Protein synthesis

The central dogma of cell biology occurs in what correct sequence...

Transcription, mRNA ribosome binding, Translation, Protein secretion

Parts of the nucleus include...

Nucleolus, Nuclear pore, Chromatin 

Ribosomes have 2 subunits…

60S, 40S

What are histones and their role in eukaryotic DNA?

Structural proteins that help condense DNA into chromatin

Which of the following accurately describes the structure of eukaryotic DNA? 

Linear double-stranded helix with histone proteins  

Which cellular organelle houses eukaryotic ribosomes during protein synthesis?

ER

Which process occurs within the nucleus of eukaryotic cells?

DNA replication