Although bacteria lack membrane-bound organelles, such as chloroplasts and mitochondria, they can still perform the
functions of these organelles by localizing certain metabolic enzymes on:
a. ribosomes.
b. the cell wall.
c. the plasma membrane.
d. the nuclear membranes.
e. the endoplasmic reticulum.
c
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Imagine that you are an interior architecture/biology double-major. While at home during break, one of your friends asks you to design and help build a spiral staircase that is modeled after a DNA molecule
The stair case must have 12 steps, and each step needs to be 6-feet wide. You say, "OK, as long as you provide the materials." So, your friend asks you for a list of materials needed to build the staircase. Which of the following includes the items necessary to make a staircase that is based on the molecular structure of a DNA molecule? A. 1 railing and 12 boards (each of which is 6- feet wide) B. 2 railings and 12 boards (each of which is 6-feet wide) C. 2 railings and 24 boards (12 that are 2-feet long and 12 that are 4-feet long) D. 2 railings and 24 boards (each of which is 3-feet long) E. 1 railing and 24 boards (12 that are 2-feet long and 12 that are 4-feet long) F. 1 railing and 24 boards (each of which is 3- feet long)
Many plants are filled with toxins that kill or deter herbivores. Many plants sequester these compounds within the cell. Where in the plant cell are these toxic substances most likely stored?
A. Central vacuole B. Mitochondria C. The stroma D. Amyloplasts E. Lysosomes Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about about plant toxin sequestration? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The ____ phylum has about 550 known living species of vascular, seed-bearing plants, the most among gymnosperms
Many of them have needlelike leaves with thick cuticles and sunken stomata, and are thus adapted to dry conditions.
a. Cycadophyta b. Anthophyta c. Gnetophyta d. Coniferophyta e. Ginkgophyta
In which of the following does the environment play a causal role?
a. Marfan syndrome b. cystic fibrosis c. dog coat color d. sickle-cell anemia e. depression and schizophrenia