Užduočių lapas tema Biologija slaugos stojamiesiems egzaminams su atsakymais

What is the main role of carbohydrates in the human diet?

1. ATo carry the body's genetic information
2. BTo form antibodies
3. CTo build muscle tissue
4. DTo provide a quick source of energy

What is the R group of an amino acid?

1. AThe side chain that differs between amino acids
2. BThe carboxyl group at one end
3. CThe amino group that is shared by all amino acids
4. DThe peptide bond between two amino acids

Kokiu prietaisu matomos pavienės ląstelės?

1. ATeleskopu
2. BMikroskopu
3. CTermometru
4. DGarso spektrometru

What is meant by independent assortment in meiosis?

1. AAll chromosomes from the mother go into the same gamete
2. BHomologous pairs line up randomly, so gametes get different mixes of chromosomes
3. CDNA is copied separately in each chromosome
4. DSister chromatids stay joined until the end of meiosis, so all gametes are identical

Which DNA bases are purines?

1. ACytosine and thymine
2. BAdenine and thymine
3. CCytosine and guanine
4. DAdenine and guanine

Koks ryšys jungia aminorūgštis baltyme?

1. AVandenilinis ryšys tarp bazių
2. BPeptidinis ryšys
3. CEsterinis ryšys
4. DGlikozidinis ryšys

Grafikas rodo, kad fermento aktyvumas didėja nuo 20 °C iki piko 37 °C, o paskui staigiai krenta. Kokia geriausia interpretacija?

1. ATemperatūra neturi įtakos fermento aktyvumui
2. BFermentas geriausiai veikia 20 °C ir sunaikinamas 37 °C
3. CFermentas ir toliau greitėja kylant temperatūrai
4. DOptimumas yra apie 37 °C; karštesnėmis sąlygomis jis denatūruojasi

A farmer's crops grow poorly in soil lacking nitrates. Why do plants need nitrogen?

1. ATo absorb more carbon dioxide through the stomata
2. BTo make amino acids, proteins and nucleic acids
3. CTo build cellulose cell walls
4. DTo make glucose during photosynthesis