Lembaran kerja Biologi untuk peperiksaan kemasukan kejururawatan dengan jawapan

What is a karyotype?

1. AA diagram of a family's inheritance pattern
2. BA map of the organelles inside a cell
3. CA list of all the proteins that a cell makes during its life
4. DA picture of a cell's chromosomes arranged in pairs by size

What does homozygous mean?

1. AHaving only one copy of a gene
2. BHaving two identical alleles for a gene
3. CHaving an extra chromosome
4. DHaving two different alleles for a gene

What are the parts of a triglyceride (a fat molecule)?

1. AThree glucose units and one phosphate
2. BOne amino acid and three fatty acids
3. COne glycerol and three fatty acids
4. DTwo glycerols and one fatty acid

What does RNA polymerase do?

1. AIt builds a protein from an mRNA template
2. BIt removes introns from pre-mRNA
3. CIt copies the whole genome before cell division
4. DIt builds an RNA strand from a DNA template

What happens in the lytic cycle of a virus?

1. AThe host cell makes antibodies against the virus
2. BThe viral DNA joins the host DNA and stays inactive for a long time
3. CThe virus divides by binary fission outside the cell
4. DThe virus makes many copies in the host cell, which then bursts

A protein is made to be secreted out of the cell. What path does it follow?

1. AGolgi apparatus, then rough ER, then nucleus, then cell membrane
2. BRough ER, then Golgi apparatus, then vesicle, then cell membrane
3. CNucleus, then lysosome, then Golgi apparatus, then cell membrane
4. DSmooth ER, then mitochondrion, then vesicle, then cell membrane

How does the CRISPR-Cas9 gene-editing system find the right place to cut DNA?

1. AIt binds only to the start codon of every gene
2. BA guide RNA pairs with the matching DNA sequence
3. CThe Cas9 protein cuts DNA at random sites
4. DIt reads the amino acid sequence of the protein

Satu sampel DNA mengandungi 30% adenina. Berapa peratuskah bes yang merupakan guanina?

1. A20%
2. B30%
3. C70%
4. D40%