उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

What is a haploid cell?

1. AA cell with one set of chromosomes
2. BA cell with two sets of chromosomes
3. CA cell with an extra chromosome
4. DA cell with no nucleus

How many millilitres are in one litre?

1. A1000
2. B100
3. C10 000
4. D10

परासरण (ऑस्मोसिस) चयनात्मक पारगम्य झिल्ली के पार किस पदार्थ का विसरण है?

1. Aपानी
2. Bग्लूकोज़
3. Cप्रोटीन
4. Dसोडियम आयन

In a pedigree, a trait appears in every generation, and every affected child has at least one affected parent. Which inheritance pattern is most likely?

1. AAutosomal recessive
2. BA new mutation in each generation
3. CAutosomal dominant
4. DX-linked recessive

What is meant by independent assortment in meiosis?

1. AAll chromosomes from the mother go into the same gamete
2. BHomologous pairs line up randomly, so gametes get different mixes of chromosomes
3. CDNA is copied separately in each chromosome
4. DSister chromatids stay joined until the end of meiosis, so all gametes are identical

Where does the Krebs (citric acid) cycle take place in a eukaryotic cell?

1. AIn the nucleus
2. BIn the mitochondrial matrix
3. COn the rough endoplasmic reticulum
4. DIn the cytoplasm

A man has Klinefelter syndrome (XXY). Which error most likely produced it?

1. AExtra mitosis in the zygote after fertilisation
2. BNondisjunction of the sex chromosomes during meiosis in a parent
3. CA frameshift mutation in one of the genes on the father's Y chromosome
4. DCrossing over between chromosome 21 and the X chromosome

A plant is kept in the dark to use up its starch. One leaf is then sealed in a bag with a chemical that absorbs CO₂, and the plant is placed in light. Later, that leaf has no starch, but the other leaves do. What does this show?

1. ALight is needed for photosynthesis
2. BChlorophyll is needed for photosynthesis
3. COxygen is needed for photosynthesis
4. DCarbon dioxide is needed for photosynthesis