Lembaran kerja Biologi untuk peperiksaan kemasukan kejururawatan dengan jawapan

What is a Punnett square used for?

1. AMeasuring the size of a cell
2. BPredicting the possible genotypes of offspring
3. CCounting the chromosomes in a cell
4. DShowing the order of genes on a chromosome

What is cell differentiation?

1. AThe process by which a cell divides into two
2. BThe process by which cells die on purpose
3. CThe process by which cells become specialised
4. DThe process by which DNA is copied

What does xylem carry in a plant?

1. AOxygen from the leaves to the roots
2. BWater and minerals from the roots upward
3. CSugars from the leaves to the roots
4. DSeeds from the flowers to the soil

Berapakah bilangan kromosom dalam sel telur manusia yang normal?

1. A23
2. B92
3. C22
4. D46

Mengapakah buta warna merah-hijau lebih biasa pada lelaki berbanding perempuan?

1. ALelaki mempunyai satu kromosom X, jadi satu alel sahaja sudah cukup
2. BPerempuan tidak boleh mewarisi alel itu daripada bapa mereka
3. CAlel itu dibawa pada kromosom Y
4. DAlel itu dominan pada lelaki dan resesif pada perempuan

Why do red blood cells have a flattened, biconcave disc shape?

1. AIt lets them hold a larger nucleus and more DNA
2. BIt gives a large surface area for gas exchange
3. CIt helps them divide faster
4. DIt makes them stick to vessel walls

PCR starts with one double-stranded DNA molecule, and the number of copies doubles each cycle. How many copies are there after 10 cycles?

1. A100
2. B512
3. C1024
4. D20

Why is one new DNA strand made in short pieces (Okazaki fragments) during replication?

1. AOnly half of the DNA needs to be copied
2. BDNA polymerase works only 5' to 3', and the strands are antiparallel
3. CHelicase cuts that strand into pieces before copying
4. DThe lagging strand is made of RNA instead of DNA, so it must be built in pieces