Praxis General Science CK (5435) Domain 3: Life Science

In a DNA molecule, the nitrogenous base adenine always pairs with which other base?

Which process is primarily responsible for the genetic variation seen in gametes during sexual reproduction?

Which of the following best describes the role of ribosomes in a cell?

The term "endemic" refers to a species that:

In the context of ecology, "carrying capacity" refers to:

Which process describes the movement of water from the roots to the leaves of a plant?

Which of the following is a characteristic of passive transport in cells?

In a food web, tertiary consumers are usually:

Which type of cell division results in daughter cells with half the number of chromosomes of the parent cell?

What is the primary function of chloroplasts in plant cells?

In the Linnaean system of classification, which rank directly follows "Order"?

Which of the following best describes the principle of competitive exclusion in ecology?

In mammalian cells, which organelle is primarily responsible for the detoxification of drugs and poisons?

Which principle in biology explains why water moves up a plant from the roots to the leaves against gravity?

In the process of protein folding, what level of structure is characterized by the arrangement of amino acid side chains far apart in the primary sequence?

Which of the following describes the function of the enzyme telomerase?

In ecological terms, a "keystone species" is best described as:

What type of biomolecule is an enzyme?

In genetics, the term "pleiotropy" refers to:

In a typical ecosystem, which trophic level has the greatest biomass?