Phiếu bài tập Sinh học cho kỳ thi đầu vào điều dưỡng có đáp án

What is an organism's genotype?

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

What are homologous chromosomes?

1. ATwo identical copies of one chromosome made when DNA is replicated
2. BChromosomes that are found only in gametes
3. CTwo chromosomes that are always the X and the Y
4. DA matching pair, one from each parent, that carry the same genes

What are stomata?

1. AGreen structures in the leaf that store starch
2. BSmall pores in leaves that allow gas exchange
3. CHairs on roots that absorb minerals
4. DTubes that carry water up the stem

What does the enzyme lipase break down?

1. ADNA into nucleotides
2. BFats into fatty acids and glycerol
3. CProteins into amino acids and peptides
4. DStarch into sugars

A thermometer gives readings of 36,1, 36,1 and 36,2 °C for a water bath that is really at 37,0 °C. How are these readings best described?

1. ANeither accurate nor precise
2. BPrecise but not accurate
3. CAccurate but not precise
4. DBoth accurate and precise

Why do the palisade cells near the top surface of a leaf contain many chloroplasts?

1. AThey get the most light and do most of the photosynthesis
2. BThey protect the leaf from insects and strong winds
3. CThey carry sugars from the leaves down to the roots
4. DThey store most of the plant's water for dry periods

Which evidence supports the theory that mitochondria came from bacteria that lived inside an ancient cell?

1. AThey make the proteins used by the whole cell, including the nucleus
2. BThey are found in all prokaryotic cells
3. CThey have their own circular DNA, ribosomes and a double membrane
4. DThey have a cell wall made of peptidoglycan

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. ASecondary structure
2. BTertiary structure
3. CPrimary structure
4. DQuaternary structure