Answer the following question given this paragraph: The arthropod exoskeleton consists of several layers of cuticle. The exoskeleton prevents water loss and gives support and protection. It also acts as a counterforce for the contraction of muscles. The exoskeleton doesn't grow as the animal grows. Therefore, it must be shed and replaced with a new one periodically through life. This is called molting . Q: What part of an animal helps to prevent water loss and gives support and protection? Choices: - membrane - cuticle - backbone - exoskeleton A:
exoskeleton
(Question)
Answer the following question given this paragraph: Why do satellites stay in orbit? Why don't they crash into Earth due to the planet's gravity? Newton's law of universal gravitation describes what happens. Every object in the universe is attracted to every other object. Gravity makes an apple fall to the ground. Gravity also keeps you from floating away into the sky. Gravity holds the Moon in orbit around Earth. It keeps Earth in orbit around the Sun. Q: What keeps earth in orbit around the sun? Choices: - energy - motion - momentum - gravity A:
(Answer)
gravity
Ques: Answer the following question given this paragraph: Q: What are large vesicles derived from the endoplasmic reticulum and golgi apparatus? Choices: - chloroplasts - tubules - alleles - vacuoles A:
Ans: vacuoles
(Q).
Answer the following question given this paragraph: Mesophyll makes up most of the leaf's interior. This is where photosynthesis occurs. Mesophyll consists mainly of parenchymal cells with chloroplasts. Q: What consists mainly of parenchymal cells with chloroplasts? Choices: - periosteum - chlorophyll - mitochondria - mesophyll A:
(A).
mesophyll
Ques:Answer the following question given this paragraph: Q: What are microfilaments made out of? Choices: - two microscopy chains - two halophilic chains - two DNA chains - two actin chains A:

Ans:two actin chains
Answer the following question given this paragraph: Unlike nonvascular plants, all vascular plantsincluding seedless vascular plantshave a dominant sporophyte generation. Seedless vascular plants include clubmosses and ferns. Figure below shows a typical fern life cycle. Q: Do nonvascular or vascular plants have a dominant sporophyte generation? Choices: - nonvascular - deciduous - perennial - vascular A:
vascular