Cevaplı Hemşirelik giriş sınavları için biyoloji çalışma kâğıdı

What is a heterotroph?

1. AAn organism that makes its own food by photosynthesis
2. BAn organism that lives only in water
3. CAn organism with no cells
4. DAn organism that gets its food from other organisms

Ökaryot bir hücrenin DNA'sının çoğu nerede bulunur?

1. AHücre duvarında
2. BÇekirdekte
3. CLizozomlarda
4. DHücre zarında

A solution has a pH of 3. How is it described?

1. ANeutral
2. BIsotonic
3. CBasic
4. DAcidic

A bone marrow transplant can treat some blood cancers. Why does it work?

1. AThe donor stem cells produce new, healthy blood cells
2. BThe donor marrow contains antibiotics that kill cancer
3. CThe transplant replaces the patient's bones
4. DThe donor red cells divide to make more red cells

How are photosynthesis and aerobic respiration related?

1. AThe products of one are the reactants of the other
2. BBoth take place only in chloroplasts
3. CBoth happen only in animal cells, never in plant cells
4. DBoth release oxygen into the air

Why are stains such as iodine or methylene blue added to cells on a microscope slide?

1. ATo make the cells divide
2. BTo keep the cells alive for longer
3. CTo make structures easier to see
4. DTo make the cells larger

A man has Klinefelter syndrome (XXY). Which error most likely produced it?

1. AA frameshift mutation in one of the genes on the father's Y chromosome
2. BExtra mitosis in the zygote after fertilisation
3. CCrossing over between chromosome 21 and the X chromosome
4. DNondisjunction of the sex chromosomes during meiosis in a parent

A pre-mRNA is 3000 bases long, and 1200 bases of introns are removed. If all remaining bases code for amino acids, what is the largest number of amino acids in the protein?

1. A1800
2. B600
3. C1000
4. D400