Biology, 19.11.2020 01:00 bNicholson23
Which pair of structures would provide a positive identification of a plant cell under a microscope?
A. plasma membrane, large central vacuole
B. ribosomes, chloroplasts
C. cell wall, mitochondria
D. cell wall, chloroplast
Answers: 1
Biology, 21.06.2019 13:30
Which of the following descriptions of proteins are true? i. proteins can have different sequences of amino acids. ii. proteins can have different shapes. iii. proteins can have different numbers of amino acids. a. only i and ii are true. b. only ii and iii are true. c. only i and iii are true. d. i and ii and iii are all true. e. none are true statements
Answers: 1
Biology, 22.06.2019 06:00
When you run, you begin to breathe heavier and faster. your heart beats more quickly, bringing more oxygen to your cells. which organ systems are working together here?
Answers: 1
Biology, 22.06.2019 07:00
8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.
Answers: 3
Biology, 22.06.2019 09:00
Temperatures in ponds and lakes vary by season. select the best answer from the choices provided t f
Answers: 2
Which pair of structures would provide a positive identification of a plant cell under a microscope?...
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