ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is the resolution of a microscope?

1. AHow bright the image appears
2. BIts ability to show two close points as separate
3. CHow many times larger it makes the image of the specimen
4. DHow large the field of view is

What is a trait that is controlled by many genes called?

1. AA polygenic trait
2. BA sex-linked trait
3. CA recessive trait
4. DA codominant trait

Which enzyme adds new nucleotides to build a new DNA strand?

1. ARNA polymerase
2. BPepsin
3. CHelicase
4. DDNA polymerase

Dolly the sheep was cloned by putting the nucleus of an adult body cell into an egg cell whose nucleus had been removed. Whose nuclear DNA did Dolly have?

1. AAn equal mix of all three sheep
2. BThe sheep that gave the body cell nucleus
3. CThe sheep that carried the pregnancy
4. DThe sheep that gave the egg cell

What does Mendel's law of segregation state?

1. AEach gamete receives both alleles of every gene
2. BThe two alleles of a gene separate so each gamete gets only one
3. CDominant alleles are more common in a population than recessive ones
4. DGenes on different chromosomes are always inherited together

A tablet contains 2,5 g of a substance. How many milligrams is this?

1. A2500 mg
2. B250 mg
3. C0,0025 mg
4. D25 mg

Two plants are crossed, and about half of the offspring show the dominant trait and half show the recessive trait. What are the most likely genotypes of the parents?

1. AHeterozygous × heterozygous
2. BHomozygous dominant × homozygous recessive
3. CHeterozygous × homozygous recessive
4. DHomozygous dominant × heterozygous

After wolves are removed from a park, the deer population rises sharply and young trees are overgrazed. What does this show?

1. ARemoving a predator has no effect on plants
2. BOrganisms in a food web depend on each other
3. CWolves compete with trees for sunlight
4. DDeer are producers in the food web