Lembar kerja Biologi untuk ujian masuk keperawatan dengan jawaban

Which molecules, made by immune cells, bind to specific antigens?

1. AHormones
2. BEnzymes
3. CAntibodies
4. DPhospholipids

What is a zygote?

1. AAn unfertilised egg cell
2. BA body cell that has just completed its first round of mitosis
3. CThe diploid cell formed when a sperm fertilises an egg
4. DA haploid cell made by meiosis

In genetics, what is a carrier?

1. AA person with one recessive allele for a disorder but no symptoms
2. BA person with two recessive alleles who has the disorder
3. CA person who has a dominant disorder
4. DA person who has lost both alleles for the gene, so shows no trait

Identical twins raised in different homes have different body weights. What does this show?

1. ABody weight is controlled by a single gene
2. BThe twins must have different genotypes for body weight genes
3. CThe phenotype depends on environment as well as genotype
4. DMutations happened in every cell of one twin

In which part of the chloroplast do the light-dependent reactions happen?

1. AIn the stroma
2. BIn the thylakoid membranes
3. CIn the cell wall
4. DIn the outer membrane

What is an inversion mutation?

1. AA whole extra chromosome is added to the cell
2. BA segment of a chromosome moves to a different, non-matching chromosome
3. CA segment of a chromosome is lost completely
4. DA chromosome segment breaks off and is reattached the wrong way round

Which evidence supports the theory that mitochondria came from bacteria that lived inside an ancient cell?

1. AThey have a cell wall made of peptidoglycan
2. BThey have their own circular DNA, ribosomes and a double membrane
3. CThey make the proteins used by the whole cell, including the nucleus
4. DThey are found in all prokaryotic cells

After wolves are removed from a park, the deer population rises sharply and young trees are overgrazed. What does this show?

1. AOrganisms in a food web depend on each other
2. BWolves compete with trees for sunlight
3. CDeer are producers in the food web
4. DRemoving a predator has no effect on plants