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

Which feature helps a sperm cell carry out its job?

1. AA flagellum for swimming
2. BA cell wall for protection
3. CA large vacuole for storing water
4. DChloroplasts for making food

What is a eukaryote?

1. AAn organism that lives only in extreme heat
2. BAn organism made of a single cell without a nucleus
3. CA virus that infects animal cells
4. DAn organism whose cells have a nucleus

What is the main job of the nucleolus?

1. AIt releases energy from glucose for the nucleus
2. BIt stores water and salts for the nucleus
3. CIt makes ribosomal RNA and builds ribosome parts
4. DIt digests worn-out parts of the cell

Растение с красными цветками скрещивают с растением с белыми цветками, и все потомки имеют розовые цветки. О чём это свидетельствует?

1. AО полном доминировании
2. BО признаке, сцепленном с полом
3. CО неполном доминировании
4. DО кодоминировании

In disease spread, what is a vector?

1. AThe first person to catch a disease
2. BA medicine that destroys a pathogen in the body
3. CA blood test used to detect antibodies
4. DAn organism that carries a pathogen between hosts

During which division of meiosis do homologous chromosomes separate?

1. ANeither, because they separate in mitosis
2. BMeiosis I
3. CMeiosis II
4. DBoth meiosis I and meiosis II

A survey finds that students who sleep more get higher test scores. Which study would best test whether more sleep causes better scores?

1. ASurvey a much larger group of students about their sleep habits
2. BRandomly assign students to different sleep times and compare their scores
3. CAsk the students with the highest scores how they study
4. DCompare the test scores of students at two different schools

Какое изменение ускорило бы диффузию через мембрану?

1. AБольшая разность концентраций по обе стороны
2. BБолее низкая температура по обе стороны
3. CБолее толстая мембрана
4. DМеньшая площадь поверхности обмена