DAT Science: Biology Flashcards
The separation of DNA fragments based on their sizes is called:
electrophoresis
The layer of the skin in which melanin producing cells are found is the:
A. dermis
B. endoderm
C. mesoderm
D. epidermis
E. hypodermis
epidermis
The process of bone formation in the fetus in which cartilage is absent is known as:
intramembranous ossification
Which of the following immune cells are known to be inherently phagocytic?
A. Monocytes
B. Neutrophils
C. Macrophages
D. Monocytes and Macrophages
E. Neutrophils and Macrophages
Neutrophils and Macrophages
Which of the following kingdoms have the ability to perform photosynthesis?
Monera
Protista
Plantae
Monera, Protista, and Plantae all have the ability to perform photosynthesis.
In the three domain classifications of life, members of domain archea have more biochemical similarities with which of the following:
Bacteria
Eukaryotes
Cyanobacteria
Eukaryotes
Which of the following is NOT a function of the kidneys?
A. renal reabsorption
B. renal excretion
C. hormone secretion
D. filtration
E. micturition
micturition
During photosynthesis, the light dependent reactions take place in the:
chloroplast
The second law of thermodynamics states that:
all systems have a tendancy to move towards disorder
During the cell-cycle, cells carry out their normal functions and double their number of organelles in what stage?
A. Prophase
B. Metaphase
C. Anaphase
D. Interphase
E. Telophase
Interphase
The region of the heart that initiates the heartbeat is the:
sinoatrial node
The organelle inside the cell that breaks down toxic chemicals is the:
peroxisome
The first macromolecule that formed on Earth was:
RNA
When the developing embryo has divided into 32 cells it is called a:
morula
_______ is the final electron acceptor in the electron transport chain
A. Pyruvate
B. Oxygen
C. Carbon Dioxide
D. FAD
E. NADH
Oxygen
Inside the cell, ribosomes are produced by what?
Nucleolus
The process by which embryonic cells begin to differentiate into their final cell types during development is called:
induction
During human fertilization, sperm cells bind to the ________ of the egg.
zona pellucida
Stem cells that have the ability to differentiate into all types of human tissues are:
totipotent
Multicellular bodies, movement, and heterotrophy are characteristics of which of the following kingdoms?
A. Monera
B. Protista
C. Animalia
D. Plantae
E. Protista and Animalia
Protista and Animalia
Premature male baldness is caused by a gene located on the:
X Chromosome
_______ enzymes have multiple binding sites.
A. Non-competitive
B. Competetive
C. Regulatory
D. Catalytic
E. Allosteric
Allosteric
In a type III survivorship curve, mortality occurs:
early in life
The innermost layer of the meninges is the:
pia mater
Which of the following is true of the digestive, respiratory, and urinary systems?
A. They maintain fluid levels in the blood.
B. They maintain constant body temperature.
C. They maintain oxygen levels in the blood.
D. They maintain the balance of substances in the blood.
E. All of the above.
They maintain the balance of substances in the blood.
Inside the cell, proteins are synthesized by what organelle?
Ribosomes
