Biologia na egzaminy wstępne na pielęgniarstwo: karta pracy z odpowiedziami

Czym jest gen?

1. AFragmentem DNA kodującym produkt, np. białko
2. BBiałkiem kopiującym DNA przed podziałem komórki
3. CRodzajem komórki przenoszącej cechy dziedziczne
4. DPełnym zestawem wszystkich chromosomów komórki

Czym jest fenotyp?

1. AParą alleli, które organizm posiada dla danego genu
2. BLiczbą chromosomów w gamecie
3. CCechą widoczną, np. kolorem oczu
4. DKolejnością zasad w genie

Which sex chromosomes does a typical human male have?

1. AXY
2. BYY
3. CXX
4. DX only

How do embryonic stem cells differ from most adult stem cells?

1. AThey can become almost any cell type, while adult stem cells are more limited
2. BThey are haploid, while adult stem cells are diploid
3. CThey are found only in plants, while adult stem cells are found in animals
4. DThey can no longer divide, while adult stem cells divide quickly

A cell has a nucleus and mitochondria but no cell wall and no chloroplasts. What kind of cell is it most likely to be?

1. AA fungal cell
2. BA bacterial cell
3. CA plant cell
4. DAn animal cell

What are introns?

1. ACodons that tell the ribosome to stop translation
2. BShort pieces of DNA made on the lagging strand
3. CCoding sections joined together to form the mature mRNA
4. DNon-coding sections removed from pre-mRNA before translation

A person's body temperature starts to fall in a cold room. Which responses help bring it back up?

1. AShivering and narrowing of blood vessels in the skin
2. BSweating and widening of blood vessels in the skin
3. CSlower heart rate and less muscle activity
4. DFaster breathing and more urine production

Under the microscope, homologous chromosomes are moving to opposite poles, and each is still made of two chromatids. Which stage is this?

1. AProphase of mitosis
2. BAnaphase II of meiosis
3. CAnaphase I of meiosis
4. DAnaphase of mitosis