Робочий аркуш «Біологія для вступних іспитів на медсестринство» з відповідями

What is an organism's genome?

1. AThe traits that can be seen
2. BAll of its genetic material
3. CA single gene on one chromosome
4. DThe proteins made by one cell

What is a chromosomal deletion?

1. AThe swap of a single DNA base
2. BThe loss of a piece of a chromosome
3. CA piece of chromosome that is turned around
4. DAn extra copy of a whole chromosome

A solution has a pH of 3. How is it described?

1. ABasic
2. BAcidic
3. CNeutral
4. DIsotonic

A student's hypothesis is "Salt water slows the growth of bean seedlings." Which is a prediction based on it?

1. ABean seedlings need sunlight and water to grow well
2. BSeedlings given salt water will grow less than those given plain water
3. CSalt water is made of sodium chloride and water
4. DSeedlings given plain water will die within a week

A cell has a nucleus and mitochondria but no cell wall and no chloroplasts. What kind of cell is it most likely to be?

1. AA fungal cell
2. BA plant cell
3. CAn animal cell
4. DA bacterial cell

A thermometer gives readings of 36,1, 36,1 and 36,2 °C for a water bath that is really at 37,0 °C. How are these readings best described?

1. ABoth accurate and precise
2. BPrecise but not accurate
3. CAccurate but not precise
4. DNeither accurate nor precise

An mRNA reads AUG-UUU-GGC-UAA. How many amino acids are in the protein made from it?

1. A4
2. B3
3. C12
4. D2

Bacteria from hot springs have enzymes that work best at about 80 °C, while most human enzymes work best near 37 °C. What is the best explanation?

1. ATheir enzymes do not have an active site, so heat cannot affect them
2. BTheir enzymes are made of lipids, not proteins
3. CTheir enzymes have structures that stay stable at high temperatures
4. DHigh temperature never affects any enzyme