Biologia na egzaminy wstępne na pielęgniarstwo: karta pracy z odpowiedziami

What is the job of the capsule found around some bacteria?

1. AIt protects the cell, for example from white blood cells
2. BIt holds the bacterium's main chromosome
3. CIt helps the bacterium make energy by photosynthesis
4. DIt is used to swim through liquids

Which bonds hold the two strands of a DNA double helix together?

1. APeptide bonds between the sugars
2. BHydrogen bonds between the bases
3. CDisulfide bonds between the bases
4. DIonic bonds between the phosphates

Which enzyme unwinds the DNA double helix and separates the two strands for copying?

1. AAmylase
2. BLipase
3. CHelicase
4. DLigase

Where does the Krebs (citric acid) cycle take place in a eukaryotic cell?

1. AIn the cytoplasm
2. BIn the nucleus
3. COn the rough endoplasmic reticulum
4. DIn the mitochondrial matrix

Why do red blood cells have a flattened, biconcave disc shape?

1. AIt helps them divide faster
2. BIt lets them hold a larger nucleus and more DNA
3. CIt gives a large surface area for gas exchange
4. DIt makes them stick to vessel walls

A protein is made to be secreted out of the cell. What path does it follow?

1. ARough ER, then Golgi apparatus, then vesicle, then cell membrane
2. BSmooth ER, then mitochondrion, then vesicle, then cell membrane
3. CGolgi apparatus, then rough ER, then nucleus, then cell membrane
4. DNucleus, then lysosome, then Golgi apparatus, then cell membrane

A study finds that coffee drinkers have more lung cancer. Later it is found that coffee drinkers in the study also smoked more. What is smoking in this study?

1. AThe control group
2. BA placebo
3. CThe dependent variable
4. DA confounding variable

Które z poniższych jest sprawdzalną hipotezą?

1. AJeśli rośliny dostaną więcej światła, urosną wyższe
2. BRośliny są najpiękniejszymi istotami żywymi
3. CRośliny powinny być podlewane przez troskliwych ludzi
4. DRośliny czują się szczęśliwsze i spokojniejsze, gdy ludzie codziennie do nich mówią