Photosynthetic organisms always produce oxygen gas as a metabolic byproduct

Indicate whether the statement is true or false


FALSE

Biology & Microbiology

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A friend asks you for a definition of endemic because she is writing a history paper and this word keeps occurring in the literature in reference to bison on the Great Plains of the United States. Your response is that the word endemic means 

A. a species that has gone extinct since humans have evolved on Earth. B. a species that exists in many habitats on Earth. C. a species that has coevolved with humans on Earth. D. a species that lives in only one area of Earth.

Biology & Microbiology

In Barrow, Alaska, the sun does not set for several months in the summer. Based on what you know about photoperiodism, what type of plant is most likely to flower during the summer in Barrow?

A. Long-day plants. B. Short-day plants. C. Day-neutral plants.

Biology & Microbiology

Matching. Choose the one most appropriate answer

for each. 1. ___ adrenal cortex 2. ___ adrenal medulla 3. ___ anterior lobe of pituitary 4. ___ exocrine glands 5. ___ glandular epithelium in gastrointestinal tract 6. ___ gonad 7. ___ hypothalamus 8. ___ pituitary 9. ___ kidneys 10. ___ pancreatic islets 11. ___ parathyroid gland 12. ___ pineal gland 13. ___ posterior lobe of pituitary 14. ___ thymus gland 15. ___ thyroid gland A. secretes one hormone that increases the metabolic rate and another that inhibits calcium release from bone storage sites B. secrete insulin and glucagon C. secretes hormones that prepare accessory reproductive structures for reproduction D. involved in lymphocyte maturation E. secretes tropic hormones, growth hormone, and prolactin F. secretes mineralocorticoids and glucocorticoids G. in many vertebrates, helps to determine the amount and distribution of dark pigments in the skin H. secrete enzymes that help to form angiotensin I. participates in reproductive physiology and responds to photoperiod change J. releases oxytocin and antidiuretic hormone into bloodstream K. secretes a hormone that promotes calcium release from bone storage sites L. produces oxytocin and antidiuretic hormone M. secretes cholecystokinin, secretin, and gastrin N. secretes epinephrine and norepinephrine O. secrete pheromones, milk, tears, sweat, and mucus

Biology & Microbiology

Which of the following is the best method to sterilize heat-labile solutions?

A) dry heat B) autoclave C) membrane filtration D) pasteurization E) freezing

Biology & Microbiology