Biology Challenge

What is the basic structural and functional unit of all living organisms?

• molecule

• cell

• organ

• tissue

Which organelle is known as the powerhouse of the cell?

• nucleus

• lysosomes

• mitochondria

• ribosomes

What is the function of the nucleus in a cell?

• Control center and genetic material storage

• Energy production

• Waste storage

• Cell wall formation

What is the difference between mitosis and meiosis?

• Mitosis produces genetically identical daughter cells, while meiosis produces genetically diverse daughter cells

• The main difference between mitosis and meiosis is the number of daughter cells produced and the number of chromosomes in each daughter cell.

• Mitosis occurs in somatic cells, while meiosis occurs in gametes

• The difference is in the timing of cell division

How many chromosomes do humans normally have?

• 46

• 40

• 50

• 23

What is a gene?

• A gene is a type of protein

• A gene is a type of cell

• A gene is a sequence of DNA that contains the instructions for building a specific protein or RNA molecule.

• A gene is a type of virus

What is the role of DNA in genetics?

• DNA serves as the genetic material that stores and transmits hereditary information.

• DNA is responsible for producing proteins in the body.

• DNA acts as a barrier to prevent genetic mutations.

• DNA plays a role in regulating the body's immune system.

What is a Punnett square used for in genetics?

• To identify the gender of an organism

• To predict the possible genotypes of offspring in a genetic cross.

• To analyze the frequency of gene mutations

• To determine the dominant traits in an individual

What is the difference between genotype and phenotype?

• Genotype is the genetic makeup, while phenotype is the physical characteristics.

• Genotype is only relevant for plants, while phenotype is only relevant for animals

• Genotype and phenotype are the same thing

• Genotype refers to physical characteristics, while phenotype refers to genetic makeup

What is genetic variation and why is it important in evolution?

• Genetic variation is the same in all individuals within a population

• Genetic variation has no impact on evolution

• Genetic variation only occurs in plants

• Genetic variation is the diversity in gene frequencies within a population, and it is important in evolution as it provides the raw material for natural selection to act upon, allowing for adaptation to changing environments and the emergence of new species.