Biologia na egzaminy wstępne na pielęgniarstwo: karta pracy z odpowiedziami

Której jednostki najczęściej używa się do podawania wielkości komórki?

1. AKilometrów (km)
2. BLitrów (L)
3. CMetrów (m)
4. DMikrometrów

What is an antigen?

1. AA white blood cell that engulfs and digests bacteria
2. BA protein that carries oxygen
3. CA drug that kills viruses
4. DA molecule that the immune system sees as foreign

In which stage of the cell cycle does a cell spend most of its time?

1. AAnaphase
2. BMetaphase
3. CInterphase
4. DProphase

Which DNA bases are purines?

1. AAdenine and guanine
2. BCytosine and thymine
3. CAdenine and thymine
4. DCytosine and guanine

What is the difference between an antiseptic and a disinfectant?

1. AAntiseptics kill all spores; disinfectants kill none
2. BAntiseptics are used on living tissue; disinfectants are used on objects
3. CAntiseptics are antibiotics; disinfectants are vaccines
4. DAntiseptics are used on objects and floors; disinfectants are used on skin

Why do many plants close their stomata on hot, dry days?

1. ATo take in more carbon dioxide
2. BTo reduce water loss
3. CTo release more oxygen
4. DTo speed up photosynthesis

An old idea says giraffes got long necks because each one stretched to reach leaves and passed the longer neck to its young. Why is this idea rejected?

1. AGiraffes do not eat leaves from tall trees, so stretching is not needed
2. BNeck length is not affected by any genes
3. COnly plants can pass on traits to offspring
4. DChanges acquired in a lifetime are not passed on in the genes

Pasteur boiled broth in swan-neck flasks. The broth stayed clear until the neck was broken off, when it soon became cloudy. What did this show?

1. AMicrobes come from the air, not from the broth itself
2. BAir alone, without microbes, spoils broth
3. CBoiling makes broth produce new microbes
4. DSwan-neck flasks produce chemicals that kill bacteria