Which of the following is not a macromolecule?

a

carbohydrates

b

plastics

c

proteins

d

metals

How are animal and plant cells similar to a factory?

A mule is the offspring of a horse and a donkey. A donkey sperm contains 31 chromosomes and a horse egg has 32, so the zygote has 63. The zygote develops normally. However, a mule is sterile; meiosis cannot occur normally in its testes or ovaries.

A plant can open or close it's stomata in response to environmental conditions. Which best explains how the ability to open and close stomata benefits a plant?

True or False a continental glacier flows in all directions

Reproductive separation may result in the __ of two diffrerent species

How many centrioles are there in a cell metaphase? 2 4 6 8 None

How is tidal energy collected?

Darwin hypothesized that a new species could appear through small changes in an ancestral species. Which observation that he made about finches most supports that hypothesis

Where do amoebas live and what are their geographic range?

What is the body mass index for a person who is 70 inches tall and weighs 202 pounds?