Science questions and answers
2024\2025 GradeA+
Which blood group is the universal donor?
- correct answer Type O
A universal blood donor has type O, universal aceptor is type AB.
Blood oxygen levels are most likely low when blood _________.
- correct answer fills the right atrium
An intracellular chemical signal can be produced in the cell membrane. Once it is produced, where does
it go?
- correct answer To another part of the same cell
After food has been masticated in the oral cavity, where does it go next?
- correct answer pharynx
The diffusion of nutrients through the walls of the digestive system is critical to homeostasis in the body.
Where does the majority of this diffusion take place in the digestive system?
- correct answer small intestine
As soon as an invader, known as a(n) _____, enters the body, the body begins to fight.
- correct answer pathogen
Where is skeletal muscle found?
- correct answer attached to bones
, If a person smells something sweet, what form of information is this initially perceived as in the nervous
system?
- correct answer sensory
While hiking, a person is startled after encountering a bear. Her palms get sweaty and her heart starts
racing. Which part of her nervous system was directly stimulated?
- correct answer sympathetic
Which of the following types of tissues include cells of the immune system and of the blood?
- correct answer connective tissue
Which best describes homeostasis?
- correct answer A relatively constant environment within the body
Fertilization (the fusing of one sperm and an ovum) results in a(n) _________.
- correct answer zygote
Which of the following are included in the male reproductive system?
- correct answer the penis and epididymis
What structure plays a role in air conduction?
- correct answer trachea
What body system is the skeletal system most closely associated with when hematopoises happens?
- correct answer Cardiovascular system
What is the final structure through which urine must travel to empty out of the body?
- correct answer urethra
Which sequence describes the hierarchy level of biological organization?
- correct answer Kingdom, Phylum, Class, Order, Family, Genus, Species