ใบงาน ชีววิทยาสำหรับข้อสอบเข้าพยาบาล พร้อมเฉลย

What do bacteria use flagella for?

1. AMaking proteins from amino acids
2. BMoving from place to place
3. CCopying their DNA
4. DStoring food

What is an organism's genotype?

1. AThe traits that can be seen or measured
2. BThe alleles it carries for a trait
3. CThe number of cells in its body
4. DThe environment in which it lives

What is an inference?

1. AA variable that the scientist changes on purpose
2. BA list of the materials used in an experiment
3. CA conclusion reached from observations and prior knowledge
4. DA measurement taken with a calibrated instrument in a laboratory

During childbirth, pressure on the cervix causes oxytocin release, which causes stronger contractions and more pressure. What kind of control is this?

1. APositive feedback
2. BHomeostatic balance
3. CNegative feedback
4. DNatural selection

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

In a food chain, producers hold 10 000 units of energy. Roughly how much is passed on to the primary consumers?

1. AAbout 5000 units
2. BAbout 10 000 units
3. CAbout 1000 units
4. DAbout 10 units

At 100× total magnification, the field of view of a microscope is 2 mm wide. What is its width at 400×?

1. A0.2 mm
2. B8 mm
3. C2 mm
4. D0.5 mm

Parts of a protein chain coil into alpha helices and fold into beta sheets, held by hydrogen bonds. Which level of protein structure is this?

1. APrimary structure
2. BTertiary structure
3. CQuaternary structure
4. DSecondary structure