Which of these was NOT characteristic of the first cells on Earth?

Group of answer choices

contained organelles

anaerobic

prokaryotic

single celled

What happens to the atomic mass when the atomic numbers increase

What is the procedure called when sperm are collected via masturbation from the partner or from a sperm donor and then deposited in the vagina, cervix, uterus, or Fallopian tubes to assist with fertilization?

How does the circulatory and respiratory system work together to get oxygen to the body cells?

Scientific experiments often produce new scientific knowledge. What usually happens if a scientific experiment generates new knowledge that doesn't agree with an existing theory? A. Scientists choose whichever side seems to have the most followers.

Gene expression in prokaryotes is regulated at which stage?

What is an acid? Select all that apply. A substance that releases hydroxide ions in water A substance that releases hydrogen ions in water A substance that tastes sour A substance with a pH below 7 A substance that tastes bitter

Skin color is determined by three to five gene pairs. This makes skin color

How many pills does a person have to take to prevent organ rejection?

Which of the following statements is true based on information found in the table above? A. Each type of bacteria can cause only one disease. B. All forms of bacteria are infectious agents. C. Fever is present in any living organism with bacteria. D.

Which of the following best explains why pancreatic amylase is able to break down starches, but not lipids?