Which of the following are threats to the biodiversity of invertebrates?
A) habitat destruction only
B) non-native (invasive) species only
C) habitat degradation only
D) habitat destruction, non-native (invasive) species, habitat degradation
Answer: D
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A geneticist examines a somatic cell from a fly during metaphase of mitosis and determines that 16 chromatids are present. If a germ-line cell from this species divides by meiosis, then at the end of meiosis I (including the first cytokinesis) each cell will contain
A. 8 chromosomes with 8 DNA molecules. B. 8 chromosomes with 16 DNA molecules. C. 4 chromosomes with 4 DNA molecules. D. 4 chromosomes with 8 DNA molecules. 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 know about meiosis? 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?
Which classification is the best description of humans?
a. herbivore b. carnivore c. omnivore d. decomposer e. photosynthetic organism
The stimulation of a motor neuron ultimately results in the release of a neurotransmitter at the synapse between the neuron and a muscle cell. How is the chemical signal converted into an electrical signal in the postsynaptic muscle cell?
What will be an ideal response?
Mechanical removal of most microbes from living or inanimate surfaces
A. Sterilization B. Disinfection C. Decontamination D. Antisepsis