Lignin

a. is needed directly for photosynthesis.

b. is a red pigment.

c. provides structural support and waterproofing to plants.

d. is the female reproductive cell in seed plants

What is a sodium potassium pump

Which statement about inertia is correct? a. An object's inertia depends on friction. b. An object's inertia depends on its mass. c. As an object's speed increases, its inertia increases. d. As an object's speed increases, its inertia decreases.

A group of organisms that can interbreed and produce fertile offspring is a (n)

When aerosols containing pathogens spread disease from a distance of less than one meter, it is considered?

This is a membrane-bound organelle in eukaryotic cells that is the production and processing center of proteins and some lipids.

What is the meaning of the word "thermal" in this sentence? all boys coming on the school camping trip need to bring a pair of long thermal underwear because it is going to be very cold this weekend.

If an animal had 44 chromosomes in its sex cells, how many chromosomes total will they have?

Which system regulates and controls growth, development, metabolism, and reproduction? 1. endocrine system 2. lymphatic system 3. integumentary system 4. skeletal system

In photosynthesis what do the chloroplasts convert the energy of sunlight into?

State what scientists might do to successfully combat bacteria that are resistant to vancomycin