Биология для вступительных экзаменов на сестринские программы: лист заданий с ответами

What is natural selection?

1. AAnimals choosing which mates they like best, so traits change at random
2. BOrganisms changing their genes when they need to
3. CHumans breeding plants for useful traits
4. DIndividuals with helpful traits survive and reproduce more

What is phagocytosis?

1. AA cell engulfing large particles such as bacteria
2. BA cell taking in small droplets of fluid
3. CA cell dividing into two identical daughter cells
4. DA cell releasing hormones by exocytosis

Which molecules, made by immune cells, bind to specific antigens?

1. AHormones
2. BPhospholipids
3. CAntibodies
4. DEnzymes

Why do the palisade cells near the top surface of a leaf contain many chloroplasts?

1. AThey carry sugars from the leaves down to the roots
2. BThey store most of the plant's water for dry periods
3. CThey protect the leaf from insects and strong winds
4. DThey get the most light and do most of the photosynthesis

Which process removes carbon dioxide from the atmosphere?

1. APhotosynthesis
2. BCellular respiration
3. CBurning fossil fuels
4. DDecomposition

Which body system works with the respiratory system to deliver oxygen to body cells?

1. AThe digestive system
2. BThe circulatory system
3. CThe skeletal system
4. DThe urinary system

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. ATertiary structure
2. BSecondary structure
3. CPrimary structure
4. DQuaternary structure

In a trial, 20% of patients improve on a new drug and 18% improve on a placebo. What is the best conclusion?

1. AThe drug adds little benefit beyond the placebo
2. BThe drug works well, because 20% of patients improved
3. CThe drug is ten times better than the placebo
4. DThe placebo was harmful to the patients