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

Which characteristic is shared by all living things?

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

What is the resolution of a microscope?

1. AHow large the field of view is
2. BHow bright the image appears
3. CHow many times larger it makes the image of the specimen
4. DIts ability to show two close points as separate

In science, what is an observation?

1. AA conclusion drawn before any data are collected
2. BInformation gathered with the senses or instruments
3. CA rule that explains all known facts
4. DA guess about why something happens

A greenhouse is warm and brightly lit, but the air has very little carbon dioxide. What is most likely limiting the rate of photosynthesis?

1. AThe number of stomata
2. BThe light intensity in the greenhouse
3. CThe carbon dioxide concentration
4. DThe temperature

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

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

Why do plants wilt when the soil around their roots becomes very salty?

1. ASalt blocks sunlight from reaching the leaves
2. BSalt makes the root cells swell and burst
3. CThe roots take in too much water
4. DWater leaves the root cells by osmosis

A human body cell has 46 chromosomes in G1. How many chromatids does it have at metaphase of mitosis?

1. A92
2. B46
3. C23
4. D184

A plant cell is placed in a strong salt solution. Its membrane and cytoplasm pull away from the cell wall. What is this called?

1. APlasmolysis
2. BTurgor
3. CLysis
4. DCrenation