Užduočių lapas tema Biologija slaugos stojamiesiems egzaminams su atsakymais

A solution has a pH of 3. How is it described?

1. ABasic
2. BAcidic
3. CNeutral
4. DIsotonic

What are restriction enzymes?

1. AEnzymes that digest fats in the intestine
2. BEnzymes that copy RNA into DNA
3. CEnzymes that join amino acids into proteins
4. DEnzymes that cut DNA at specific base sequences

Kas mokslinio tyrimo metode yra hipotezė?

1. APlatus paaiškinimas, pagrįstas daugeliu eksperimentų
2. BAtliktų matavimų sąrašas
3. CĮrodytai teisinga išvada
4. DPatikrinamas paaiškinimas arba prognozė

Which process removes carbon dioxide from the atmosphere?

1. ACellular respiration
2. BBurning fossil fuels
3. CPhotosynthesis
4. DDecomposition

HIV is a retrovirus. What does its enzyme reverse transcriptase do?

1. AIt makes proteins from the virus's DNA
2. BIt makes DNA from the virus's RNA
3. CIt makes RNA from the host's DNA
4. DIt breaks down the host's ribosomes

In a pedigree, a trait appears in every generation, and every affected child has at least one affected parent. Which inheritance pattern is most likely?

1. AAutosomal dominant
2. BX-linked recessive
3. CA new mutation in each generation
4. DAutosomal recessive

Pepsinas veikia skrandyje, kur pH yra apie 2. Kas nutiktų jo aktyvumui plonojoje žarnoje, kur pH yra apie 8?

1. AJis virstų kitu fermentu, skaidančiu riebalus
2. BNepasikeistų, nes pH fermentams įtakos neturi
3. CJis sumažėtų, nes pH labai nutolęs nuo jo optimumo
4. DJis padidėtų, nes fermentai mėgsta šarminę aplinką

A point mutation changes a codon in the middle of a gene into a stop codon. What is the most likely effect?

1. AA shortened protein that usually does not work
2. BA protein with one different amino acid
3. CA protein that is longer than normal
4. DNo change, because stop codons are ignored