Užduočių lapas tema Biologija slaugos stojamiesiems egzaminams su atsakymais

What does transfer RNA (tRNA) do?

1. AIt joins two DNA strands together
2. BIt copies DNA in the nucleus
3. CIt brings amino acids to the ribosome
4. DIt carries the code out of the nucleus

What is peer review?

1. AExperts checking a study before it is published
2. BRepeating your own experiment many times
3. CAsking patients for their opinion of a treatment
4. DReading a textbook to learn a topic

What is the main job of the cell wall in a plant cell?

1. ATo control which genes are switched on in the nucleus
2. BTo make proteins for the cell
3. CTo support the cell and stop it from bursting
4. DTo release energy from glucose

How are photosynthesis and aerobic respiration related?

1. ABoth take place only in chloroplasts
2. BThe products of one are the reactants of the other
3. CBoth release oxygen into the air
4. DBoth happen only in animal cells, never in plant cells

What is the function of the pores in the nuclear envelope?

1. AThey let chromosomes leave the nucleus to be copied
2. BThey make ribosomal RNA for the cell
3. CThey attach the nucleus to the cell membrane
4. DThey let molecules such as mRNA pass in and out

A bone marrow transplant can treat some blood cancers. Why does it work?

1. AThe donor stem cells produce new, healthy blood cells
2. BThe transplant replaces the patient's bones
3. CThe donor red cells divide to make more red cells
4. DThe donor marrow contains antibiotics that kill cancer

Raumenų ląstelės sunaudoja daug energijos. Kurių organelių tikėtumėtės jose rasti dideliu kiekiu?

1. AChloroplastų
2. BMitochondrijų
3. CVakuolių
4. DLizosomų

Cystic fibrosis is caused by a faulty CFTR protein, which forms a chloride channel in the cell membrane. Which process is directly affected?

1. ACopying of DNA in the nucleus
2. BDiffusion of oxygen molecules through the lipid bilayer
3. CMovement of chloride ions through a membrane protein
4. DProduction of ATP in the mitochondria