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WorksheetsRC 4: Biological Processes and Systems
Total questions: 11
Worksheet time: 6mins
Which statement best describes the relationship between the products of photosynthesis and the reactants in cellular respiration?
The products of photosynthesis serve as the reactants in cellular respiration to provide chemical energy.
The products of photosynthesis combine with the reactants in cellular respiration to remove ATP from cells.
The products of photosynthesis inhibit the reactants in cellular respiration in the presence of light.
The products of photosynthesis change the structure of the reactants in cellular respiration in the presence of light.
The diagram represents one way an enzyme can be inhibited (stopped). Which statement explains the effect of an inhibitor on an enzyme?
A substrate will be able to bond with the enzyme.
The enzyme will likely be attacked by immune cells.
The enzyme will be unable to produce more enzymes.
A substrate will be unable to attach to the enzyme.
People who have Alzheimer’s disease experience an increasing loss of brain function and cognition over time. Alzheimer’s is characterized by a buildup of abnormal protein fragments that damage brain cells. Recently scientists have discovered an enzyme, BACE2, that decreases these abnormal protein fragments in the brain of a person with Alzheimer’s disease. Which statement explains how BACE2 most likely works?
BACE2 breaks down into smaller pieces that react with the abnormal protein fragments, forming more complex molecules.
BACE2 speeds up the reaction that breaks down the abnormal protein fragments.
BACE2 molecules link several abnormal protein fragments together, forming a complete protein.
BACE2 is a reactant that combines with the abnormal protein fragments.
During the final stages of human gestation, receptors for the hormone oxytocin increase on the smooth muscle cells of the uterus. The release of oxytocin during labor stimulates the smooth muscle tissue in the wall of the uterus. The vigorous contraction of the uterine smooth muscle helps push the baby through the birth canal so that delivery can occur. This process involves the interaction of which organ systems?
Endocrine and muscular only
Endocrine and reproductive only
Endocrine, muscular, and reproductive
Endocrine, reproductive, and excretory
Scientists studying illnesses caused by chemically contaminated food conduct research to minimize the effects of these diseases on society. These chemicals harm the body through interactions between the digestive system and the immune system. Scientists conducting this research are likely to describe which of these interactions between the digestive and immune systems?
Chemicals enter the immune system through a break in the skin. The chemical contamination is then passed to the digestive system by the circulatory system.
The immune system transforms the chemicals in the contaminated foods into harmless chemicals. These harmless chemicals are then broken down by the digestive system.
When contaminated foods are eaten, the immune system prevents the chemicals from entering the digestive system.
Chemicals enter the digestive system through contaminated foods. Once in the body, the chemical contaminants impair the body’s ability to fight off infectious diseases.
Kidneys are part of the excretory system in a human body. They purify the impure blood and send it back to the rest of the body. Which system is mainly responsible for the transport of plasma to the kidneys?
Respiratory system
Circulatory system
Muscular system
Nervous system
Cytokinins are a class of plant hormones that help regulate growth by promoting cell division. Cytokinins are produced mainly in meristematic tissue, where most plant growth occurs. Which system carries cytokinins produced in the roots to the rest of the plant?
Vascular system
Dermal system
Reproductive system
None of these
Which table correctly identifies the function of each structure in the reproduction of the plant?
X: Pollen production
Y: Pollen transfer
Z: Production of eggs
X: Attraction of pollinators
Y: Production of male sex cells
Z:Egg production and embryo development
X: Protection for embryo
Y: Supply nourishment to embryo
Z: Place of embryonic development
X: Photosynthesis
Y: Production of cells that protect internal organs
Z: Production of egg and sperm
Plants called sundews have rounded green leaves with many hair-like structures. The ends of these structures contain enzymes in a sticky liquid that looks like nectar or moisture, as shown in the picture. The hairs do not react to dust or nonliving material but will bend inward when insects get caught in the sticky liquid. Sundews digest trapped insects over a period of a few days. Based on this information, what functions do the specialized leaves of sundews perform?
Provide water to the plant and perform photosynthesis
Respond to stimuli and anchor the plant
Provide nutrients to the plant and respond to stimuli
Release pollen to insects and perform photosynthesis
The table shows some observations made by four students during a field trip to a nature area.
Which student made observations of a community of organisms?
Student 1
Student 2
Student 3
Student 4
The graph models core body temperature during a rapid change in environmental conditions. Which statement explains the pattern in the graph?
Body temperature varies in a predictable pattern during the day.
Body temperature is controlled by an internal feedback mechanism.
Vasodilation and vasoconstriction are dependent on the time of day.
Vasodilation and vasoconstriction trigger an immediate increase in body temperature.
