Biology Basics

What is the function of the nucleus in a cell?

• Control center and contains genetic material

• Regulates cell growth

• Stores waste materials

• Provides energy for the cell

Explain the process of photosynthesis.

• Photosynthesis is the process of converting chemical energy into light energy.

• Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy stored in glucose molecules.

• Photosynthesis occurs only in animals.

• Photosynthesis is a process that does not involve any energy conversion.

What is the difference between mitosis and meiosis?

• Mitosis results in haploid cells while meiosis results in diploid cells

• Mitosis occurs in plants while meiosis occurs in animals

• The main difference between mitosis and meiosis is the number of daughter cells produced and the genetic variation in the daughter cells.

• The difference is in the color of the cells

Describe the structure of DNA.

• DNA is composed of lipids and proteins

• DNA contains only three nitrogenous bases: adenine, cytosine, and uracil

• DNA is a single-stranded linear structure

• DNA is a double helix structure composed of nucleotides, each containing a sugar, phosphate group, and one of four nitrogenous bases: adenine, thymine, cytosine, or guanine.

What is the role of chlorophyll in plants?

• Help in water absorption

• Regulate plant growth

• Absorb light energy for photosynthesis

• Store excess nutrients

How does the circulatory system work in the human body?

• The circulatory system works by transporting oxygen-rich blood to the body's tissues and returning oxygen-poor blood to the heart.

• The circulatory system works by transporting food to the body's tissues and returning waste to the heart.

• The circulatory system works by transporting carbon dioxide-rich blood to the body's tissues and returning oxygen-rich blood to the heart.

• The circulatory system works by transporting blood to the lungs for oxygenation and then to the heart for distribution.

What are the main differences between plant and animal cells?

• Plant cells have centrioles, lysosomes, and cilia or flagella, while animal cells have cell walls, chloroplasts, and a large central vacuole.

• Plant cells have ribosomes, endoplasmic reticulum, and Golgi apparatus, while animal cells have cell walls, chloroplasts, and a large central vacuole.

• Plant cells have cell walls, chloroplasts, and a large central vacuole, while animal cells have centrioles, lysosomes, and cilia or flagella.

• Plant cells have mitochondria, nucleus, and cytoplasm, while animal cells have cell walls, chloroplasts, and a large central vacuole.

Explain the concept of natural selection.

• Natural selection only occurs in controlled laboratory settings.

• Natural selection is the process of humans selecting which organisms survive and reproduce.

• Natural selection always results in the strongest organisms surviving.

• Natural selection is the process by which organisms better adapted to their environment tend to survive and reproduce more than those less adapted, leading to the increase in frequency of advantageous traits in a population over time.

What is the importance of enzymes in biological reactions?

• Enzymes are important in biological reactions because they inhibit reactions by increasing activation energy.

• Enzymes are important in biological reactions because they are only involved in non-biological reactions.

• Enzymes are important in biological reactions because they speed up reactions by lowering activation energy.

• Enzymes are important in biological reactions because they have no effect on reaction rates.

Describe the process of respiration in cells.

• Respiration is the process of converting light energy into chemical energy in cells.

• Respiration is a process that occurs only in plant cells, not animal cells.

• Respiration in cells is the process where glucose is broken down in the presence of oxygen to produce ATP, which is the energy currency of the cell.

• Respiration in cells involves the breakdown of water molecules to release energy.