Cevaplı Hemşirelik giriş sınavları için biyoloji çalışma kâğıdı

What are the bacteria called that normally live on the skin and in the gut without causing disease?

1. APrions
2. BVectors
3. CNormal flora
4. DPathogens

What is the active site of an enzyme?

1. AThe region where the substrate binds
2. BThe product formed by the reaction
3. CThe part of the cell where the enzyme is made
4. DThe gene that codes for the enzyme

What does it mean that a cell membrane is selectively permeable?

1. AIt lets only water molecules cross
2. BIt lets every substance cross freely in both directions
3. CIt lets no substance cross at all
4. DIt lets some substances cross but not others

Salivary amylase begins the digestion of which nutrient in the mouth?

1. AStarch
2. BCellulose
3. CProtein
4. DFat

What is the role of oxygen in aerobic respiration?

1. AIt breaks pyruvate into lactic acid
2. BIt is split to release the energy needed for glycolysis
3. CIt accepts electrons at the end of the transport chain
4. DIt is built into glucose molecules

Which process removes carbon dioxide from the atmosphere?

1. ABurning fossil fuels
2. BPhotosynthesis
3. CCellular respiration
4. DDecomposition

After wolves are removed from a park, the deer population rises sharply and young trees are overgrazed. What does this show?

1. ADeer are producers in the food web
2. BOrganisms in a food web depend on each other
3. CRemoving a predator has no effect on plants
4. DWolves compete with trees for sunlight

A green plant is kept in a sealed jar in complete darkness for a day. What happens to the carbon dioxide level in the jar?

1. AIt falls, because the plant keeps photosynthesising
2. BIt falls, because plants take in more CO₂ when they respire in the dark
3. CIt rises, because the plant respires but cannot photosynthesise
4. DIt stays the same, because plants do not respire