Jepordy Flashcards
Mark the correct order from the simplest to the most complex level.
Atom, molecule, cell, tissue, organ, organ system, organism
The maintenance of a relatively constant internal environment in humans is called _____.
Homeostasis
◦Which of the following controversial issues relates to human biology at the cellular level?
a.The supply of organs for transplant
b.The role of mitochondrial DNA
c.Stem cell research
d.Mandatory childhood vaccines
c. Stem cell research
In a scientific experiment, a control group and an experimental group should be designated, and the control group should ______.
a.be treated with the drug
b.be treated with the drug and the placebo
c.be treated with the placebo only
d.know which group has received the drug
c. be treated with the placebo only
What is science’s contribution to society?
Science improves technology and the human physical condition
Isotopes have a different number of _____.
Neutrons
◦Hydrogen bonds are essential for life; they are weak chemical bonds, because they can be broken when ____.
a.temperature increases
b.temperature falls below zero
c.pH changes
d.a and c are correct
d. a and c are correct
temp increases and ph changes
Which of the following is an organic molecule?
a.Water
b.Carbon dioxide
c.Glucose
d.Ferric oxide
c. Glucose
◦What carbohydrate is used most often as an energy source in cells? ◦
a.Glucose
b.Maltose
c.Sucrose
d.Cellulose
a. Glucose
What molecule is a nucleic acid (this molecule controls protein synthesis and storage genetic information)? a.DNA
b.RNA
c.Proteins
d.ATP
a. DNA
What is the major difference between eukaryotic cells and prokaryotic cells?
Eukaryotic cells have membrane-bound organelles.
also good to know: Eukaryotic cells are the basis for both unicellular and multicellular organisms. In contrast, prokaryotic cells do not have any membrane-bound organelles and are always part of unicellular organisms. Both prokaryotic and eukaryotic cells have similar features, like ribosomes, genetic material, a cytoplasm, and plasma membranes. There are two primary types of eukaryotic cells: animal and plant cells. The human body contains various types of eukaryotic cells, including neurons, intestinal cells, and blood cells.
◦Which biological molecule is not a part of a cell’s membrane? ◦
a.Phospholipids
b.Cholesterol
c.Proteins
d.Nucleic acids
d. Nucleic acids
◦The movement of water across a membrane from an area of low solute concentration to an area of high solute concentration is known as ____.
Osmosis
if a cell lacked ribosomes, it would not be able to _____?
Synthesize proteins
◦The organelle responsible for phagocytosis, filled with digestive enzymes, is the _____.
lysosomes
also phagocytosis, process by which certain living cells called phagocytes ingest or engulf other cells or particles.
◦Which of the following is a correct feature of the skeletal system? ◦
a.Mature bones never change during adulthood.
b.Ligaments attach bones together.
c.Bones are a storage site for sodium.
d.Arthritis is weakening of bone tissue.
b. Ligaments attach bones together.
The bone that covers and protects the knee joint is the ____?
Patella
What hormone causes calcium to be released from bone and increases calcium in blood?
PTH
also : Maybe they could at least tell us wtf PTH stands for. Parathyroid hormone (PTH) is a hormone your parathyroid glands release to control calcium levels in your blood. It also controls phosphorus and vitamin D levels. If your body has too much or too little parathyroid hormone, it can cause symptoms related to abnormal blood calcium levels. Here’s some good insight if found Bones: Parathyroid hormone stimulates the release of small amounts of calcium from your bones into your bloodstream.Kidneys: Parathyroid hormone enables the production of active vitamin D (calcitriol) in your kidneys. PTH also signals your kidneys to retain calcium in your body rather than flushing it out through your urine.Small intestine: Parathyroid hormone signals your small intestine to absorb more calcium from the food you eat.
Which joint permits the greatest range of mothion of any articulation or joint?
Shoulder
◦Which of the following is a feature of the axial skeleton? ◦
a.The pelvic girdle is a component.
b.It protects the spinal cord.
c.The joints of the axial skeleton are immovable.
d.Its bones are categorized as long bones.
b. protects the spinal cord
What is the primary contractile unit of muscle?
The sarcomere
also: The fundamental repeat unit within muscle that is responsible for contraction is the sarcomere. The sarcomere consists of a bundle of myosin-containing thick filaments flanked and interdigitated with bundles of actin-containing thin filaments
what is the main fuel of energy for muscle contraction?
Glucose
◦Smooth muscle is involuntary and _____. ◦
a.many nuclei are present
b.single nucleus is present
c.striations are present
d.intercalated disc is present
b. single nucleus is present
◦Which of the following occurs during contraction? ◦ a.Calcium enters the sarcoplasmic reticulum.
b.Myosin heads form cross-bridges with actin. c.Troponin-tropomyosin binds ATP.
d.Calcium binds myosin.
b. Mysoin heads form cross-bridges with actin
◦The type of contraction in which the tension rises, but the muscle does not change length, is an _____.
Isometric Contraction
Where in the skin are the tactile receptors found? (which layer)
Dermis
