Which of the following plants do NOT have swimming sperm?

ginkgos

cycads

both a and b

none of the above

A scientist wanted to formulate a pill to attack a specific type of bacteria that infects the throat. Which biological component would be best to use as a model for the pill's function? 1-bacteriocytes 2-phagocytes 3-complement 4-antibodies

Describe how latitude and longitude coordinates are used to locate positions on Earth

The creation of offspring carrying genetic information from a single parent is called

Based on scientific research, which statement best describes mutations?

Many animals have internal or external structures that provide support. Which structure found in plant cells play a similar role? A. cell wall B. chloroplast C. cytoplasm D. cell membrane

What body system transports simple carbohydrates to all parts of the body?

If a molecule is too large to slip through the spaces in the membrane, how will that molecule enter the cell? A. The molecule will shrink so that it can fit in the spaces. B. The molecule will move through a protein channel. C.

What symbol indicates the cardinal directions

Which will have a better chance of surviving a major change in the environment where it lives: A) A bacteria strain with only twenty minutes between generations B) A large mammal (like bears) with decades between generations Explain your choice

What are the three-letter "words"of mRNA