उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

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 one recessive allele for a disorder but no symptoms
4. DA person with two recessive alleles who has the disorder

Which enzyme adds new nucleotides to build a new DNA strand?

1. AHelicase
2. BRNA polymerase
3. CDNA polymerase
4. DPepsin

किसी जीव का जीनोटाइप Bb है। उसे कैसे वर्णित किया जाता है?

1. Aविषमयुग्मजी
2. Bअप्रभावी समयुग्मजी
3. Cअगुणित
4. Dप्रभावी समयुग्मजी

Which stage of aerobic respiration produces the most ATP?

1. AThe electron transport chain
2. BFermentation
3. CGlycolysis in the cytoplasm
4. DThe Krebs cycle in the matrix

What is a random sample?

1. AA group made only of people who volunteer to take part
2. BA group where everyone in the population has an equal chance of being chosen
3. CA group chosen by the researcher because they are easy to reach and willing
4. DA group chosen because they are likely to support the hypothesis

What does Mendel's law of segregation state?

1. AEach gamete receives both alleles of every gene
2. BDominant alleles are more common in a population than recessive ones
3. CThe two alleles of a gene separate so each gamete gets only one
4. DGenes on different chromosomes are always inherited together

Two parents who both have a genetic condition have a child who does not. Assuming a single gene, what inheritance pattern does this show?

1. AAutosomal dominant, with both parents heterozygous
2. BAutosomal recessive, with both parents homozygous
3. CX-linked recessive, with the father as a carrier
4. DAutosomal recessive, with both parents heterozygous

During the Industrial Revolution, soot darkened tree trunks in parts of England, and dark peppered moths became more common than pale ones. What best explains this?

1. ADark moths were produced by the polluted air
2. BThe moths chose to become dark to hide
3. CThe soot settled on the pale moths and slowly turned them dark
4. DBirds found and ate fewer dark moths on the dark trunks