When Zebrafish Eggs Are Laid,they Are Surrounded by a Tough

question 72

Multiple Choice

When zebrafish eggs are laid,they are surrounded by a tough chorion.Sperm are unable to get through this chorion and must find the tiny tunnel called a micropyle that provides a channel to the egg cell membrane.This channel is so tiny that only one sperm is able to fit through at a time.The micropyle most likely

• A) aids in preventing polyspermy.
• B) prevents sperm from other species from fusing with the egg.
• C) evolved from a similar structure found in fruit fly eggs.
• D) ensures that the head and not the tail of the sperm fuses with the egg.
• E) is a mechanism to ensure that the zygote is diploid and not haploid.

Grasp the effects of parental behavior and environmental factors on the development of preterm infants.

Understand the importance and benefits of interventions such as preschool attendance for enhancing cognitive functions in VLBW (Very Low Birth Weight) children.

Acknowledge the significance of fetal monitoring and the potential consequences of prolonged oxygen deprivation.

Identify the risks associated with multiple births on prematurity and low birth weight.

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Definitions:

Lava Fountains

Explosive volcanic eruptions that eject lava high into the air in a spectacular display, often from a single vent or fissure.

Pahoehoe Lava

A type of basaltic lava flow with a smooth, unbroken surface that resembles ropey or wrinkled skin, flowing more fluidly than other types.

Aa Lava

A type of lava flow characterized by a rough, jagged surface formed when more viscous lava cools and solidifies.

Vesicles

Small cavities in volcanic rocks that were formed by gas bubbles during the solidification of the rock.