Užduočių lapas tema Biologija slaugos stojamiesiems egzaminams su atsakymais

Su kuria baze DNR visada jungiasi adeninas?

1. ATiminu
2. BCitozinu
3. CUracilu
4. DGuaninu

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

1. AIsotonic
2. BNeutral
3. CBasic
4. DAcidic

What are the three parts of a nucleotide?

1. AA glycerol, a phosphate and a fatty acid
2. BA carboxyl group, a base and a lipid
3. CA phosphate, a sugar and a nitrogen base
4. DAn amino group, a sugar and a fatty acid

Kuo palengvintoji difuzija skiriasi nuo paprastosios difuzijos?

1. AJi naudoja ATP molekulėms perkelti į viršų
2. BJi naudoja kanalų arba nešiklius baltymus, bet ne ATP
3. CJi perkelia molekules prieš gradientą siurbliu ir ATP
4. DJi perkelia tik dujas, pavyzdžiui, deguonį

An organism is multicellular, makes its own food by photosynthesis and has cell walls of cellulose. Which kingdom does it belong to?

1. AFungi
2. BAnimals
3. CBacteria
4. DPlants

There are 64 possible codons but only about 20 amino acids. What does this tell you about the genetic code?

1. AMost amino acids are coded for by more than one codon
2. BOnly 20 of the codons are ever used
3. CEach codon codes for more than one amino acid at the same time
4. DEach amino acid has exactly three codons

Why can standard DNA profiling not tell identical twins apart?

1. AOnly one twin inherits the father's DNA
2. BIdentical twins have no non-coding DNA
3. CIdentical twins come from one zygote and have the same DNA
4. DTwins always share the same fingerprints on their hands

Redi placed meat in open jars and in jars covered with gauze. Maggots appeared only on meat that flies could reach. What did this show?

1. AFlies form from rotting meat, and then they lay eggs on fresh meat
2. BMaggots come from eggs laid by flies, not from the meat itself
3. CGauze produces chemicals that stop meat from rotting
4. DMeat turns into maggots when exposed to air