ใบงาน ชีววิทยาสำหรับข้อสอบเข้าพยาบาล พร้อมเฉลย

What are the three parts of a nucleotide?

1. AAn amino group, a sugar and a fatty acid
2. BA carboxyl group, a base and a lipid
3. CA glycerol, a phosphate and a fatty acid
4. DA phosphate, a sugar and a nitrogen base

What is apoptosis?

1. ADivision of the cytoplasm
2. BProgrammed cell death
3. CFusion of two gametes
4. DUncontrolled cell division

What is a chromosome?

1. AA single gene that codes for one protein
2. BA small organelle in the cytoplasm that makes ATP for the cell
3. CA long DNA molecule, packed with proteins, carrying many genes
4. DA strand of RNA that leaves the nucleus

Which statement about identical and non-identical twins is correct?

1. AIdentical twins come from one zygote; non-identical twins come from two
2. BBoth kinds of twin always share all of their genes
3. CIdentical twins come from two eggs that are fertilised by a single sperm
4. DNon-identical twins come from one zygote that splits in two

Nearly all cells in a person's body contain the same DNA. Why do nerve cells and muscle cells look and work so differently?

1. AMuscle cells have extra DNA from mitochondria
2. BNerve cells have lost the genes for muscle proteins
3. CDifferent genes are switched on in each type of cell
4. DEach cell type has a different set of chromosomes

ผลผลิตของการหายใจระดับเซลล์แบบใช้ออกซิเจนคืออะไร

1. Aกรดแลกติกและออกซิเจน
2. Bแป้งและน้ำ
3. Cกลูโคสและออกซิเจน
4. Dคาร์บอนไดออกไซด์ น้ำ และ ATP

The rate of an enzyme reaction rises as substrate is added but then levels off, even when more substrate is added. Why?

1. AThe substrate has become an inhibitor
2. BThe products have turned back into substrate
3. CThe enzyme has been denatured
4. DAll the active sites are occupied

In Tay-Sachs disease, a lysosomal enzyme does not work. What happens inside the affected nerve cells?

1. AThe cells can no longer make ATP in their mitochondria
2. BThe DNA cannot be copied before division
3. CThe undigested substance builds up inside lysosomes
4. DThe ribosomes stop making proteins