Blood is prevented from back flowing in veins
because of
a. high pressure flow.
b. rapid diffusion.
c. one-way valves.
d. suction from the lungs.
e. the pulsing of the veins.
C
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Ultrasound can be detected by bats because they have ____ in their ears
a. mechanoreceptors b. chemoreceptors c. thermoreceptors d. photoreceptors e. proprioreceptors
Charles Darwin proposed a mechanism for descent with modification that stated that organisms of a particular species are adapted to their environment when they possess _____
A) non-heritable traits that enhance their survival in the local environment B) non-heritable traits that enhance their survival and reproductive success in the local environment C) heritable traits that enhance their survival and reproductive success in the local environment D) heritable traits that decrease their survival and reproductive success in the local environment
Which statement is NOT true about cartilage?
A. The matrix of cartilage includes calcium salts. B. The matrix of cartilage is both solid and flexible. C. Adult bodies possess structures that are made up of cartilage such as the nose, ear, and pads between the vertebrae in the backbone. D. The human fetal skeleton is made up of cartilage. E. Cartilage cells are located in small spaces called lacunae.
Distinguish among the three types of endocytosis: pinocytosis, receptor-mediated endocytosis, and phagocytosis
What will be an ideal response?