Biology Semester 1 Review

Front

What are the products of photosynthesis that serve as starting materials for cellular respiration?

Back

Glucose and oxygen.

Front

What type of feedback loop enhances or amplifies changes in a system?

Back

Positive feedback loop.

Front

If green is dominant over purple in a genetic cross, what is the genotype of a purple flower?

Back

gg (homozygous recessive).

Front

What is the complementary DNA sequence for the strand ATG TGA CAG?

Back

TAC ACT GTC.

Front

What percentage of energy is typically passed on to the next trophic level in an ecosystem?

Back

10%.

Front

Define photosynthesis.

Back

The process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll, primarily converting carbon dioxide and water into glucose and oxygen.

Front

What is cellular respiration?

Back

The process by which cells convert glucose and oxygen into energy (ATP), carbon dioxide, and water.

Front

Explain the role of chlorophyll in photosynthesis.

Back

Chlorophyll is a pigment found in plants that absorbs light energy, primarily from the sun, which is used to convert carbon dioxide and water into glucose during photosynthesis.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their traits even when only one copy is present, while recessive alleles require two copies to express their traits.

Front

What is a trophic level?

Back

A trophic level is a position in a food chain or food web that indicates the flow of energy and nutrients from one organism to another.