Biologia na egzaminy wstępne na pielęgniarstwo: karta pracy z odpowiedziami

What are restriction enzymes?

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

What is a eukaryote?

1. AAn organism whose cells have a nucleus
2. BAn organism made of a single cell without a nucleus
3. CAn organism that lives only in extreme heat
4. DA virus that infects animal cells

Co jest monomerami kwasów nukleinowych, takich jak DNA?

1. AAminokwasy
2. BNukleotydy
3. CCząsteczki glukozy
4. DCząsteczki glicerolu

By which process does oxygen enter a cell and carbon dioxide leave it?

1. AActive transport by membrane pumps
2. BSimple diffusion through the lipid bilayer
3. CEndocytosis in small vesicles
4. DFacilitated diffusion through glucose carriers

Golden rice was genetically modified to make beta-carotene. What is the aim?

1. ATo make the rice resistant to all insects
2. BTo increase the protein content of the rice
3. CTo make the rice grow faster in cold climates
4. DTo help prevent vitamin A deficiency

In a food chain, producers hold 10 000 units of energy. Roughly how much is passed on to the primary consumers?

1. AAbout 5000 units
2. BAbout 10 units
3. CAbout 10 000 units
4. DAbout 1000 units

Próbka DNA zawiera 30% adeniny. Jaki procent jej zasad stanowi guanina?

1. A30%
2. B20%
3. C40%
4. D70%

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. BMeat turns into maggots when exposed to air
3. CGauze produces chemicals that stop meat from rotting
4. DMaggots come from eggs laid by flies, not from the meat itself