解答つき看護学校入学試験のための生物ワークシート

RNAにあってDNAにはない塩基はどれか。

1. Aアデニン
2. Bグアニン
3. Cウラシル
4. Dチミン

In genetics, what is a carrier?

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

What is the R group of an amino acid?

1. AThe carboxyl group at one end
2. BThe side chain that differs between amino acids
3. CThe amino group that is shared by all amino acids
4. DThe peptide bond between two amino acids

What does RNA polymerase do?

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

What is the job of the checkpoints in the cell cycle?

1. ATo copy the DNA a second time before mitosis
2. BTo speed up division whenever the cell is short of nutrients or space
3. CTo stop the cycle if the DNA is damaged or the cell is not ready
4. DTo join the two daughter cells back together

By which process does oxygen enter a cell and carbon dioxide leave it?

1. AActive transport by membrane pumps
2. BSimple diffusion through the lipid bilayer
3. CFacilitated diffusion through glucose carriers
4. DEndocytosis in small vesicles

Why can O-negative red blood cells be given to patients of almost any blood type in an emergency?

1. AThey carry no A, B or RhD antigens
2. BThey have no haemoglobin to react with
3. CTheir plasma contains anti-A and anti-B antibodies
4. DThey carry all of the A, B and RhD antigens

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 make the proteins used by the whole cell, including the nucleus
3. CThey have their own circular DNA, ribosomes and a double membrane
4. DThey are found in all prokaryotic cells