JAN P1 2023

Which of the following scientists proposed the concept of inheritance of acquired traits?

Which of the following best describes the role of nitrogen-fixing bacteria in the nitrogen cycle?

Which of the following plant groups is characterized by the production of seeds covered with a fruit?

A bear's diet consists mainly of small fish in spring and winter due to the lack of fruit. However, in summer and autumn, its diet consists of 50% fruit. Based on this information, how is the bear's diet best classified?

Which group of molecules are the building blocks of an RNA nucleotide?

After fertilization, which part of a flower develops into a fruit?

A technician observes chromosomes lined up in the middle of a dividing cell. Which phase of cell division is the cell in?

Two experiments were performed on mice to understand the effect of the thyroid gland. In the first case, the thyroid gland was removed, and the mouse showed stunted growth. In the second case, the thyroid gland was removed and then grafted back at another location, resulting in normal growth. What conclusion can be drawn from these results?

In green beans, the allele for tall plants (T) is dominant over the allele for dwarf plants (t). If half of the offspring from a cross are tall and half are dwarf, what are the genotypes of the parents?

A germ cell of a bird has 80 chromosomes. After meiosis I, what does each daughter cell contain?

How are the wings of a bird and the wings of a bee related in evolutionary terms?

During intense exercise, an athlete's body cannot supply enough oxygen to the muscles. Which metabolic process is most likely to occur in the muscle cells as a result?

A couple with a normal phenotype has a family history of severe myopia. Their DNA fingerprinting results are shown. What can you deduce about the inheritance of myopia in this family?

Which group of prokaryotic organisms plays the most critical role in recycling nutrients within an ecosystem?

When someone is afraid or stressed, their breathing rate increases. Which part of the brain primarily controls this physiological response?

A black mouse is crossed with a white mouse, and all the offspring are black. Which pattern of inheritance is most likely at work?

In the wild, young animals often learn essential survival skills by observing their parents. Which type of learning behavior is primarily involved in this process?

A scientist conducts an experiment on aquatic plants to investigate the effect of light intensity on the rate of photosynthesis. The data shows that the number of oxygen bubbles released is highest when the distance between the light source and the plant is the shortest. Which of the following is the most accurate conclusion based on these results?

To confirm that photosynthesis occurred during an experiment with Elodea plants, a scientist performs an iodine test on a leaf and observes the appearance of a blue color. Based on the data table, which plant's leaf would show this result?

In an experiment studying the effect of carbon dioxide concentration on photosynthesis in Elodea plants, which plant is expected to release the greatest amount of oxygen bubbles, assuming light intensity is constant?

A drug exclusively binds to tRNA binding sites within a eukaryotic cell. Which cellular location is most likely affected by this drug?

What best describes the functional relationship between codons and amino acids in the context of protein synthesis?

In a food chain, a plant produces 300 calories of energy. According to ecological principles, how much energy would be available to a secondary consumer?

Given the leading strand of a DNA molecule with the sequence 5'-CGCATGTAGCGA-3', which of the following sequences is complementary to this strand?

A cuckoo bird lays its egg in a warbler's nest. Once the cuckoo chick hatches, it pushes the warbler eggs out of the nest, and the warbler parents then care only for the cuckoo chick. What type of symbiotic relationship does this represent?

A study focuses on two adjacent lakes with interconnected fish populations. Historically, seasonal flooding allowed interbreeding between these populations. However, due to recent climate changes, seasonal flooding no longer occurs. How will that affect future fish?

Consider a plant species where the allele for tall stems (T) is dominant over short stems (t), and the allele for wide leaves (W) is dominant over narrow leaves (w). What is the most effective testcross to determine the genotype of a plant that displays tall stems and wide leaves?

Which statement correctly identifies the biome located closest to the equator and describes it appropriately?

A person inhales hydrogen cyanide, resulting in histologic hypoxia. Based on this information, how does cyanide cause a lack of oxygen utilization at a cellular level?

In Labrador retrievers, black coat color (B) is dominant to brown (b), but a second gene (E) determines whether any pigment is deposited. If a Lab has two copies of the recessive 'e' allele, it will be yellow, regardless of the B gene. If two black Labs with genotype BbEe are crossed, what proportion of their offspring will be yellow?

An individual has defects in connective tissues associated with abnormalities in regulatory proteins. These proteins show irregularities in glycosylation patterns. Which cellular structure is most likely involved in this patient's disease?

Which of the following is an example of a basic nervous system function, rather than a higher-level cognitive process?

In the phosphorus cycle, in which is phosphorus least abundant?