ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What are cilia?

1. AShort hair-like projections that beat in waves
2. BOpenings in the nuclear envelope
3. CFolds of the inner mitochondrial membrane that make ATP
4. DSmall round sacs that hold digestive enzymes

What is cytokinesis?

1. AThe division of the cytoplasm into two cells
2. BThe pairing of homologous chromosomes
3. CThe copying of DNA before division
4. DThe condensing of chromosomes in prophase

In biology, what is a clone?

1. AA genetically identical copy of an organism, cell or gene
2. BAn offspring of two different parents
3. CA cell with an extra chromosome
4. DAn organism that carries genes from two different species

What does the enzyme lipase break down?

1. AFats into fatty acids and glycerol
2. BDNA into nucleotides
3. CStarch into sugars
4. DProteins into amino acids and peptides

Clostridium tetani grows in deep puncture wounds but is killed by oxygen. How is this bacterium described?

1. AAn obligate anaerobe
2. BA facultative anaerobe
3. CAn obligate aerobe
4. DA photosynthetic bacterium

How can bacteria pass antibiotic-resistance genes directly to other bacteria?

1. ABy osmosis, moving genes in water
2. BBy mitosis, sharing copies of their chromosomes with neighbours
3. CBy conjugation, transferring plasmids through a pilus
4. DBy meiosis, forming gametes with new alleles

A cell is 0,00002 m wide. Which value is equal to this width?

1. A200 µm
2. B2 µm
3. C20 µm
4. D0,2 mm

Fresh liver is dropped into hydrogen peroxide and bubbles form quickly. Boiled liver gives no bubbles. What is the best conclusion?

1. ALiver contains an enzyme that is destroyed by boiling
2. BHydrogen peroxide is broken down only by heat
3. CThe bubbles are carbon dioxide from respiration
4. DBoiled liver contains more hydrogen peroxide than fresh liver