Racoon dogs are sexually reproducing mammals with 54 chromosomes in their somatic cells (2n= 54). Which of the following is true of racoon dogs?
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Of the following organisms, which are adapted to anaerobic c…
Of the following organisms, which are adapted to anaerobic conditions and contain modified mitochondria that lack DNA? Select all that apply.
You have isolated an organism from a soil sample and are wor…
You have isolated an organism from a soil sample and are working to classify it. Which of these characteristics would be consistent with classification as a member of the Kingdom Fungi? (Choose all that apply)
Cells in the human heart have more mitochondria than many ot…
Cells in the human heart have more mitochondria than many other cell types in the human body. Based on this information, you would expect heart cells to produce high amounts of _______________________.
You are working as a parasitologist for the Centers for Dise…
You are working as a parasitologist for the Centers for Disease Control. You are analyzing a sample from a person who has recently traveled in South America and was bitten by many insects. In the person’s blood you find small unicellular organisms that contain a kinetoplast. To what kingdom do these organisms most likely belong?
In a sample of cells, the DNA content immediately following…
In a sample of cells, the DNA content immediately following mitosis is measured and is equal to 28 picograms of DNA per nucleus. How much DNA would be found in each nucleus at the end of S and the end of G2?
The chemotherapy drug vinorelbine is used to treat some type…
The chemotherapy drug vinorelbine is used to treat some types of lung cancer. It works by disrupting the spindle fibers that move the chromosomes during cell division thus killing actively dividing cells. Vinorelbine is an example of a drug that targets:
Which of the following features is unique to animals?
Which of the following features is unique to animals?
Which one of these groups of invertebrate animals includes o…
Which one of these groups of invertebrate animals includes organisms with pharyngeal gill slits?
Robber frogs (Brachycephalus sp.) have been experiencing lar…
Robber frogs (Brachycephalus sp.) have been experiencing large die-offs due to an infectious organism. This organism is multicellular, has a filamentous body form, cell walls made of chitin and some of the cells are flagellated. Genetic analysis shows that the organism has haploid nuclei. Based on these characteristics, this disease is most likely caused by ________________________________.