Answer the following questions true (T) or false (F)
1. Laboratory experiments suggest that many of the kinds of organic molecules needed to form the first forms of life could have been made nonbiologically in Earth's early history.
2. Some of the more advanced organisms in Domains Bacteria and Archaea have a nucleus.
3. Photosynthesis was first performed by bacteria about 3.4 billion years ago.
1. TRUE
2. FALSE
3. TRUE
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Plastic pollution is considered by many scientists to be:
a. a minor nuisance. b. biodegradable. c. of lesser importance than oil or toxins. d. of equal importance to oil and toxins. e. a problem best left for the next generation to deal with.
The cervix is part of the:
a. vulva b. ovary c. uterus d. oviduct e. vagina
ACTH (adrenocorticotropin hormone) ____
a. is secreted by the posterior pituitary b. has target cells in the autonomic nervous system c. has target cells in the adrenal glands d. has target cells in the adrenal medulla e. initiates an autoimmune response
Sexual reproduction requires the fertilization of an egg by a sperm.
a. true b. false