Which organelle is most likely to be missing from the cells of a leaf? A. nucleus

B. cytoplasm

C. ribosome

D. mitochondrion

Which of the following activities is the largest producer of primary air pollutants in the united states? healthcare transportation electricity production agriculture

How would you make this observation "The grass is tall" a more scientific observation?

Which moon phase can you visually see

An increase in the calcium ion level in the sarcoplasm starts the sliding of the thin filaments. when the level of calcium ions declines, sliding stops. a. True b. False

Is a Cell membrane eukaryote or prokaryotes

The field of study in which medicine and microbiology intersect is known as medical microbiology

What unit of time on Earth is based on the revolution of the Earth around the Sun? A. Day B. Hour C. Year D. Month

In order to maintain life, organisms must produce, modify, transport, and exchange materials. What is this process called?

Choose all the right answers. Invertebrates: a.) have backbones b.) do not have backbones c.) outnumber vertebrates d.) include fish and mammals e.) include insects and mollusks

Ethyl alcohol and carbon dioxide are the end products of A. Krebs cycle B. Electron transport chain C. Alcoholic fermentation