Lembar kerja Biologi untuk ujian masuk keperawatan dengan jawaban

What is a mutagen?

1. AA cell that divides without control
2. BAn enzyme that copies DNA
3. CSomething that can cause changes in DNA
4. DA protein that repairs damaged DNA

Apa struktur utama membran sel?

1. ALapisan kaku serat selulosa dan lignin
2. BSelembar tunggal molekul pati
3. CLapisan ganda fosfolipid dengan protein yang tertanam
4. DDinding tebal peptidoglikan

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

1. AGregor Mendel
2. BLouis Pasteur
3. CRobert Hooke
4. DCharles Darwin

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

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

A patient's heart rate is measured four times: 70, 72, 74 and 80 beats per minute. What is the mean?

1. A73 beats per minute
2. B74 beats per minute
3. C72 beats per minute
4. D80 beats per minute

In a eukaryotic cell, where does transcription take place?

1. AIn the Golgi apparatus
2. BIn the nucleus
3. COn ribosomes in the cytoplasm
4. DIn the lysosomes

How does a phospholipid differ from a triglyceride?

1. AOne of the fatty acids is replaced by a phosphate group
2. BIt contains no glycerol, only fatty acids and phosphate
3. CIt is made of amino acids
4. DIt has four fatty acids instead of three

Bacteria grown in heavy nitrogen (¹⁵N) are moved to normal nitrogen (¹⁴N) and allowed to divide once. All their DNA now has a density halfway between heavy and light. Which model of replication does this support?

1. AConservative replication
2. BReplication by RNA copying
3. CReplication without a template
4. DSemiconservative replication