उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

What is a monosaccharide?

1. AA single sugar unit, such as glucose
2. BTwo sugars joined together, such as sucrose
3. CA chain of many amino acids
4. DA fat made of glycerol and fatty acids

What is a monomer?

1. AA molecule that contains no carbon
2. BA very large molecule that is made of many smaller units
3. CA small unit that joins with others to form a polymer
4. DAn enzyme that breaks down polymers

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

1. Aपानी
2. Bप्रोटीन
3. Cसोडियम आयन
4. Dग्लूकोज़

Which kind of mutation can be passed on to a person's children?

1. AA mutation in a cell that forms eggs or sperm
2. BA mutation in a liver cell caused by alcohol
3. CA mutation in a skin cell caused by sunlight
4. DA mutation in a white blood cell during infection

Why does PCR use a DNA polymerase taken from bacteria that live in hot springs?

1. AIt survives the high temperatures used to separate the strands
2. BIt copies RNA as well as DNA
3. CIt works only in the dark, like the bacteria it comes from
4. DIt makes the DNA strands stick together

The results of an experiment do not support the hypothesis. What should the scientist do next?

1. AStop doing any further research on the question
2. BRevise the hypothesis and test it again
3. CChange the data so they fit the hypothesis
4. DReport that the hypothesis was proven correct

Why do phospholipids arrange themselves into a double layer in water?

1. ATheir heads are hydrophilic and their tails are hydrophobic
2. BTheir heads are hydrophobic and their tails are hydrophilic
3. CThey carry a strong positive charge on both ends
4. DThey are fully soluble in water

A survey finds that students who sleep more get higher test scores. Which study would best test whether more sleep causes better scores?

1. ACompare the test scores of students at two different schools
2. BRandomly assign students to different sleep times and compare their scores
3. CSurvey a much larger group of students about their sleep habits
4. DAsk the students with the highest scores how they study