Lembar kerja Biologi untuk ujian masuk keperawatan dengan jawaban

What is an ecosystem?

1. AAll the members of one species in an area
2. BThe weather in a particular region
3. CThe living things in an area and their non-living surroundings
4. DA single organism together with all of its organs and tissues

Who first used the word "cells" after looking at thin slices of cork under a microscope?

1. ALouis Pasteur
2. BRobert Hooke
3. CCharles Darwin
4. DGregor Mendel

What is a pedigree in genetics?

1. AA list of all the genes in an organism
2. BA picture of a person's chromosomes arranged in pairs by size
3. CA chart that shows how a trait is inherited in a family
4. DA table of codons and amino acids

Lactose (milk sugar) is a disaccharide. Which two monosaccharides is it made of?

1. AGlucose and fructose
2. BGlucose and galactose
3. CGlucose and glucose
4. DFructose and galactose

Which is an example of negative feedback?

1. ABlood clotting speeding up once it starts
2. BA wound becoming more inflamed over time
3. CContractions growing stronger during labour
4. DSweating when body temperature rises

Which element is found in all amino acids but not in carbohydrates?

1. AOxygen
2. BCarbon
3. CHydrogen
4. DNitrogen

People who carry one sickle cell allele are more resistant to malaria. Why is the allele common in regions where malaria is widespread?

1. ANatural selection favours the heterozygotes there
2. BMalaria causes the sickle cell mutation directly
3. CPeople with two sickle alleles are fully healthy there
4. DThe allele is dominant, so it spreads by itself

A leaf with green and white areas is kept in light and then tested with iodine. Only the green areas turn blue-black. What does this show?

1. ALight is not needed for photosynthesis
2. BChlorophyll is needed for photosynthesis
3. CIodine destroys chlorophyll in the leaf
4. DWhite areas store more starch than green areas