Quiz about Kamari Haynes '25

Question 1

Which organelle is responsible for producing energy in the form of ATP in eukaryotic cells?

Accepted Answer

Mitochondrion

Answer

Nucleus

Answer

Ribosome

Answer

Golgi apparatus

Question 2

What is the basic unit of heredity in living organisms?

Accepted Answer

Gene

Answer

Chromosome

Answer

Protein

Answer

Nucleotide

Question 3

Which process describes the movement of water across a selectively permeable membrane?

Accepted Answer

Osmosis

Answer

Diffusion

Answer

Active transport

Answer

Endocytosis

Question 4

What is the main function of enzymes in biological systems?

Accepted Answer

Speed up chemical reactions

Answer

Store genetic information

Answer

Provide structural support

Answer

Transport oxygen

Question 5

Which macromolecule is primarily responsible for storing genetic information?

Accepted Answer

Nucleic acid

Answer

Carbohydrate

Answer

Lipid

Answer

Protein

Question 6

Which of the following best describes the relationship between photosynthesis and cellular respiration?

Accepted Answer

Photosynthesis stores energy, cellular respiration releases it

Answer

Both processes produce oxygen

Answer

Both processes occur only in animals

Answer

Cellular respiration stores energy, photosynthesis releases it

Question 7

A student observes that a plant bends toward a window. Which concept best explains this behavior?

Accepted Answer

Phototropism

Answer

Gravitropism

Answer

Thigmotropism

Answer

Hydrotropism

Question 8

Given a DNA sequence: ATG CCA TGA, what would be the corresponding mRNA sequence after transcription?

Accepted Answer

AUG CCA UGA

Answer

TAC GGT ACT

Answer

UAC GGU ACU

Answer

ATG CCA TGA

Question 9

Which of the following best explains why enzymes are specific to the reactions they catalyze?

Accepted Answer

The shape of the enzyme's active site matches only certain substrates

Answer

Enzymes are made of lipids

Answer

Enzymes are used up in reactions

Answer

Enzymes are only found in animals

Question 10

A population of rabbits has a gene for fur color with two alleles: black (B) and white (b). If black is dominant, what is the expected phenotype ratio in the offspring of two heterozygous (Bb) rabbits?

Accepted Answer

3 black : 1 white

Answer

1 black : 1 white

Answer

2 black : 2 white

Answer

4 black : 0 white

Question 11

A scientist wants to determine the effect of light intensity on the rate of photosynthesis in spinach leaves. Which variable should be kept constant to ensure a fair test?

Accepted Answer

All of the above

Answer

Type of plant

Answer

Amount of water

Answer

Temperature

Question 12

A student is given a diagram of a cell and asked to identify the structure where protein synthesis occurs. Which structure should the student select?

Accepted Answer

Ribosome

Answer

Nucleus

Answer

Mitochondrion

Answer

Chloroplast

Question 13

A population of beetles is exposed to a new pesticide. After several generations, most beetles are resistant. Which process best explains this change?

Accepted Answer

Natural selection

Answer

Mutation

Answer

Genetic drift

Answer

Artificial selection

Question 14

A student observes that a certain plant species grows taller in shaded areas than in direct sunlight. What hypothesis could explain this observation?

Accepted Answer

The plant grows taller to reach more light in shaded areas

Answer

The plant requires more water in the shade

Answer

The plant has more chlorophyll in the sun

Answer

The plant prefers cooler temperatures

Question 15

Given the following food web, what would most likely happen if the population of primary consumers decreased significantly?

Accepted Answer

Producers would increase, secondary consumers would decrease

Answer

Producers would decrease, secondary consumers would increase

Answer

Both producers and secondary consumers would increase

Answer

No change would occur

Question 16

A scientist is testing the effect of a new fertilizer on plant growth. She sets up two groups: one with fertilizer and one without. What is the independent variable in this experiment?

Accepted Answer

Use of fertilizer

Answer

Amount of sunlight

Answer

Type of plant

Answer

Height of plants

Question 17

A genetic disorder is found to be caused by a recessive allele. If two carriers have a child, what is the probability that the child will have the disorder?

Accepted Answer

25%

Answer

0%

Answer

50%

Answer

75%

Question 18

A student is given a pedigree chart showing the inheritance of a trait over three generations. How can the student determine if the trait is dominant or recessive?

Accepted Answer

By observing if the trait skips generations

Answer

By counting the number of males and females

Answer

By looking at the age of individuals

Answer

By checking the environment

Question 19

A population of fish in a lake is suddenly exposed to a pollutant. Over time, only fish with a certain enzyme survive. What type of selection is this an example of?

Accepted Answer

Directional selection

Answer

Stabilizing selection

Answer

Disruptive selection

Answer

Artificial selection

Question 20

A student is asked to design an experiment to test the effect of temperature on enzyme activity. Which of the following is the best approach?

Accepted Answer

Use the same enzyme at different temperatures and measure reaction rate

Answer

Use different enzymes at the same temperature

Answer

Change both enzyme and temperature at the same time

Answer

Only measure temperature, not enzyme activity

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science