Biologia na egzaminy wstępne na pielęgniarstwo: karta pracy z odpowiedziami

What is activation energy?

1. AThe energy plants take in from sunlight
2. BThe energy needed to start a chemical reaction
3. CThe energy stored in a molecule of ATP
4. DThe heat released when a reaction finishes

Which elements make up carbohydrates?

1. ACarbon, hydrogen and oxygen
2. BHydrogen, oxygen and phosphorus
3. CCarbon, hydrogen and nitrogen
4. DCarbon, nitrogen and sulfur

What is a mutagen?

1. AAn enzyme that copies DNA
2. BSomething that can cause changes in DNA
3. CA protein that repairs damaged DNA
4. DA cell that divides without control

Jakie są produkty oddychania tlenowego?

1. ADwutlenek węgla, woda i ATP
2. BSkrobia i woda
3. CKwas mlekowy i tlen
4. DGlukoza i tlen

W której fazie mitozy chromosomy ustawiają się w poprzek środka komórki?

1. AW profazie
2. BW anafazie
3. CW telofazie
4. DW metafazie

How can bacteria pass antibiotic-resistance genes directly to other bacteria?

1. ABy osmosis, moving genes in water
2. BBy mitosis, sharing copies of their chromosomes with neighbours
3. CBy meiosis, forming gametes with new alleles
4. DBy conjugation, transferring plasmids through a pilus

Parts of a protein chain coil into alpha helices and fold into beta sheets, held by hydrogen bonds. Which level of protein structure is this?

1. AQuaternary structure
2. BPrimary structure
3. CSecondary structure
4. DTertiary structure

Why can a scientific hypothesis never be proven true with absolute certainty?

1. AHypotheses are only opinions and cannot be tested
2. BEvery experiment contains a mistake
3. CNew evidence could always contradict it in the future
4. DScientists are not allowed to reach any conclusions