The flu virus mutates very easily due to its core made of RNA. This type of virus is called a (n) ...

A) bacteriophage

B) prophage

C) adenovirus

D) retrovirus

Despite their blank structure, human bones are surprisingly blank. A hollow; string B solid; lightweight C compact; flexible D spongy; fragile

Fevers are caused by: a. Fibrinogen acting on the fever tissues b. Fibrinogen acting on the hypothalamus c. Pyrogen acting on the fever tissuesd. Pyrogen acting on the hypothalamus

Humans produce skin cells by mitosis and gametes by meiosis. The nuclei of skin cells produced by mitosis will have A) half as much DNA as the nuclei of gametes produced by meiosis.

Which of the following is an example of a primary consumer gaining energy? A. a lion eating a deer B. a caterpillar eating a plant C. a rabbit running through the forest D. a cardinal swallowing a worm

During the light reactions, what structure is responsible for absorbing the solar energy? Question 1 options: A) chloroplast B) stoma C) stroma D) bark of the tree

What is the name of a complex group of organisms that are connected and interact with one another?

Oceanic crust is composed mainly of basalt. continental crust is composed mainly of granite. why does oceanic crust generally tend to subduct under continental crust when plates collide

What is placebo and why is it used in some experiments

What is organ? a. group of different types of tissue that work together to perform a specific function or related functions. b. group of cells that work together to perform a similar function. c.

The temperate phage lambda can undergo two life cycles depending on the environmental cues. During which cycle does phage lambda form a prophage? Choose one: A. lysogeny B. burst cycle C. lytic cycle D. slow-release cycle