ST
Samuel Tawiah
Answers (6)
ST
Answered
When small mutations gradually change the surface antigens of a virus so that antibodies to the original virus become less effective, this is known as
A) an arms race.
B) antigenic escape.
C) antibody migration.
D) antigenic drift.
E) spike reassortment.
A) an arms race.
B) antigenic escape.
C) antibody migration.
D) antigenic drift.
E) spike reassortment.
On Jul 31, 2024
D
ST
Answered
Describe the functions of electroreceptors and identify the functions of magnetic reception.
On Jul 25, 2024
Electroreceptors respond to electrical stimuli. Predatory fishes use electroreceptors to detect prey. Some animals detect and use information about Earth's magnetic fields to orient themselves. Many migratory animals use magnetic fields for navigation.
ST
Answered
chemical signals that convey information among members of a species
A) acoustical signals
B) pheromones
C) monogamous
D) visual communication
E) tactile displays
F) polygynous
G) polyandrous
H) promiscuous
A) acoustical signals
B) pheromones
C) monogamous
D) visual communication
E) tactile displays
F) polygynous
G) polyandrous
H) promiscuous
On Jun 26, 2024
B
ST
Answered
Which of the following statements accurately describes the pattern of ventricular contraction?
A) The ventricles contract from the base toward the apex moving blood into the great arteries located inferior to the ventricles.
B) The ventricles contract from the apex toward the base moving blood into the great arteries located inferior to the ventricles.
C) The ventricles contract from the apex toward the base moving blood into the great arteries located superior to the ventricles.
D) The ventricles contract from the base toward the apex moving blood into the great arteries located superior to the ventricles.
A) The ventricles contract from the base toward the apex moving blood into the great arteries located inferior to the ventricles.
B) The ventricles contract from the apex toward the base moving blood into the great arteries located inferior to the ventricles.
C) The ventricles contract from the apex toward the base moving blood into the great arteries located superior to the ventricles.
D) The ventricles contract from the base toward the apex moving blood into the great arteries located superior to the ventricles.
On Jun 23, 2024
C
ST
Answered
By definition, substances that absorb visible light are called
A) photons.
B) pigments.
C) porphyrins.
D) nucleotides.
E) hydrocarbons.
A) photons.
B) pigments.
C) porphyrins.
D) nucleotides.
E) hydrocarbons.
On May 27, 2024
B
ST
Answered
List the stages in the eukaryotic cell cycle, and identify the principal events that occur during each stage.
On May 24, 2024
The cell cycle consists of Interphase (consisting of the G1, S, and G2 phases) and the M phase (consisting of mitosis and cytokinesis). In the G1 phase, the cell prepares to duplicate the DNA, in the S phase the DNA is duplicated, and in the G2 phase the cell prepares to divide the chromosomes. In the M phase, the chromosomes are divided, and in cytokinesis the cytoplasm is divided.