Biologia na egzaminy wstępne na pielęgniarstwo: karta pracy z odpowiedziami

What are the parts of a triglyceride (a fat molecule)?

1. AThree glucose units and one phosphate
2. BTwo glycerols and one fatty acid
3. COne glycerol and three fatty acids
4. DOne amino acid and three fatty acids

Which characteristic is shared by all living things?

1. AThey respond to changes in their environment
2. BThey have a backbone and a brain
3. CThey are made of many cells
4. DThey make their own food by photosynthesis

Jakiego przyrządu używa się do oglądania pojedynczych komórek?

1. ATeleskopu
2. BMikroskopu
3. CTermometru
4. DSpektrometru dźwięku

In a food chain, which organisms are the producers?

1. APlants and algae that make food by photosynthesis
2. BAnimals that eat only plants, such as rabbits and deer
3. CPredators at the top of the chain
4. DFungi that break down dead material

Which statement about identical and non-identical twins is correct?

1. AIdentical twins come from one zygote; non-identical twins come from two
2. BBoth kinds of twin always share all of their genes
3. CNon-identical twins come from one zygote that splits in two
4. DIdentical twins come from two eggs that are fertilised by a single sperm

During childbirth, pressure on the cervix causes oxytocin release, which causes stronger contractions and more pressure. What kind of control is this?

1. APositive feedback
2. BNegative feedback
3. CNatural selection
4. DHomeostatic balance

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

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

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. AA placebo
2. BThe dependent variable
3. CA confounding variable
4. DThe control group