What is the nutritional mode of most bacteria?

a. autotrophy
b. heterotrophy
c. chemoautotrophy
d. photoheterotrophy
e. chemoheterotrophy


ANSWER: b

Biology & Microbiology

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Answer the following statements true (T) or false (F)

1. For the traits Mendel studied in pea plants, each trait, or phenotype, is expressed in only the dominant or recessive form, depending on the genotype. 2. In the ABO blood type system, there are six possible genotypes, but only two possible phenotypes. 3. Environmental conditions affect single-gene traits rarely, but affect polygenic traits often. 4. When the frequencies of all the phenotypes associated with a polygenic trait are plotted on a graph, they form a characteristic bell-shaped curve. 5. Gregor Mendel is sometimes referred to as the "father of genetics" because he influenced the science of genetics more than anyone else.

Biology & Microbiology

In a bacterial cross in which the donor (Hfr) is a+b+ and the recipient strain (F-) is a-b-, it is expected that recombinant bacteria will all be a+b+

Indicate whether the statement is true or false

Biology & Microbiology

3 parts of digestive tract in mucosa layer which contains cells that produce digestive enzymes

What will be an ideal response?

Biology & Microbiology

The ____________ is used for separation of the chromosomes during ____________ of mitosis.

a. cell wall; anaphase b. flagellum; metaphase c. centromere; anaphase d. kinetochore; prophase e. centromere; telophase

Biology & Microbiology