Biology » Page 139

Biology

In contrast to eukaryotic cells, prokaryotic cells

A. have a cell cycle that includes interphase and mitosis.

B. have to pass through the G1, S, and G2 phases to prepare for division.

C. have to use binary fission to divide.

D. have to go through prophase, metaphase, anaphase, and telophase.

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Biology

If the producers contained 40,000 kc al how much energy is remaining pyramid

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Biology

What instruments and supplies will be needed to enter the common bile duct for a CBDE?

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Biology

Which occur most lunar or solar eclipse

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Biology

Which one of the following best describes the order of a somatic reflex? A. Somatic receptor → efferent nerve fiber → afferent nerve fiber → interneuron → skeletal muscle B. Somatic receptor → efferent nerve fiber → interneuron → afferent nerve fiber → skeletal muscle C. Somatic receptor → afferent nerve fiber → interneuron → efferent nerve fiber → skeletal muscle D. Somatic receptor → interneuron → afferent nerve fiber → efferent nerve fiber → skeletal muscle E. Somatic receptor → afferent nerve fiber → interneuron → efferent nerve fiber → smooth muscle

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Biology

What is dominant lethal and recessive lethal?

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Biology

The diagram shows embryo development of four different animals. How is this evidence used to suggest that life changes over time?

History of Life on Earth

All organisms have the same RNA at the beginning of development, but then the RNA changes over time to create new DNA for the differentiating characteristics.

Even in the early stages of development, these embryos are quite distinct from each other, indicating that life has changed over time to create this variety.

In the early stages of embryonic development, these four vertebrates are quite similar, indicating a possible common ancestor.

Late-stage embryonic development illustrates how, in spite of a common ancestor, each species has acquired differentiating characteristics over time that make each a unique species.

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Biology

Which of the following apply to food webs? Select all that apply. Food webs are a group of connected food chains. Arrows in a food web go from the organism that is being eaten to the organism that is eating it. Food webs show that animals only eat one type of food. Arrows in a food web represent the flow of energy in a food web. Food webs show all of the eating patterns in an ecosystem.

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Biology

The innermost membrane enveloping the embryo in the uterus is the

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Biology

What evidence will disprove a species are the same that have the same dna.?

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Biology

Giraffes with short necks lived in arid regions. Over time, grasses disappeared, forcing giraffes to eat from trees. Mutations in the genome led to some giraffes inheriting the trait for long necks. Over time, there were more giraffes with long necks in the region. What are the two reasons for the change in the population of giraffes?

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Biology

A 25-year-old housewife presents to the clinic for evaluation of paralysis in her face. She has a history of an upper respiratory infection 2 weeks before the onset of these symptoms. She states that her face is drooping and that she is unable to close her eye. On physical examination you note that her forehead is smooth on the right side her palpebral fissure appears widened and her nasolabial fold appears flattened and she is drooling. Based on this information what is the most likely diagnosis?

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Biology

When a Doctor practices Paediatrics, what sort of patients does he have?

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Biology

Why is it Important for stomach acid to maintain a pH of 2?

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Biology

What is a number describing how likely an event is

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