Užduočių lapas tema Biologija slaugos stojamiesiems egzaminams su atsakymais

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

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

What is an organism's genotype?

1. AThe environment in which it lives
2. BThe number of cells in its body
3. CThe alleles it carries for a trait
4. DThe traits that can be seen or measured

Organizmo genotipas yra Bb. Kaip jis apibūdinamas?

1. AHomozigotinis dominantinis
2. BHomozigotinis recesyvinis
3. CHaploidinis
4. DHeterozigotinis

What are introns?

1. ANon-coding sections removed from pre-mRNA before translation
2. BCodons that tell the ribosome to stop translation
3. CCoding sections joined together to form the mature mRNA
4. DShort pieces of DNA made on the lagging strand

A cell has a nucleus and mitochondria but no cell wall and no chloroplasts. What kind of cell is it most likely to be?

1. AAn animal cell
2. BA fungal cell
3. CA bacterial cell
4. DA plant cell

What does the enzyme lipase break down?

1. AProteins into amino acids and peptides
2. BFats into fatty acids and glycerol
3. CStarch into sugars
4. DDNA into nucleotides

The rate of an enzyme reaction rises as substrate is added but then levels off, even when more substrate is added. Why?

1. AThe enzyme has been denatured
2. BAll the active sites are occupied
3. CThe products have turned back into substrate
4. DThe substrate has become an inhibitor

Du sveiki tėvai susilaukia vaiko, sergančio liga. Darant prielaidą, kad tai vieno geno požymis, koks labiausiai tikėtinas paaiškinimas?

1. APožymis yra dominantinis ir vienas iš tėvų yra homozigota
2. BPožymis yra dominantinis ir abu tėvai serga
3. CPožymis yra recesyvinis ir abu tėvai yra nešiotojai
4. DVaikas paveldėjo požymį tik iš tėvo Y chromosomos