Biology, 12.01.2020 02:31 brenda0113hernandez
Soils contain small or trace amounts of many minerals, including the chemical elements phosphorus, calcium, potassium, magnesium, and sulfur. which statement describes the role of these elements, if any, in the life of a plant?
a. plants use these elements in small amounts for a variety of purposes throughout their life cycle.
b. plants incorporate these elements into most plant compounds, including starch and cellulose.
c. plants take in these elements only for specific events in their life cycle, such as producing flowers.
d. plants do not need these elements, as plants are made entirely of carbon, oxygen, nitrogen, and hydrogen.
Answers: 3
Biology, 21.06.2019 22:30
Check all that apply diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? 1.the shells make up the diatomaceous earth used in filters 2.it can be used as an ingredient in abrasives 3.they are used in food products 4.the shells can be used in some insulating materials
Answers: 2
Biology, 22.06.2019 03:00
Which statement best describes the relationship between an allele and a gene? question 1 a. an allele is a variation of a gene that can be expressed as a phenotype. b. an allele is the part of a gene that attaches to messenger rna molecules. c. an allele is a segment of a dna molecule that controls replication of a gene.
Answers: 3
Biology, 22.06.2019 07:00
Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome
Answers: 2
Biology, 22.06.2019 08:00
Aparent with freckles is crossed with a parent without freckles. the punnett square shows the possible genotypes and phenotypes of the offspring. which statement accurately describes the probability of phenotypes? a.the offspring are more likely to have freckles. b.the offspring are more likely to have no freckles. c.the likelihood of the offspring having freckles and not having freckles is the same. d.the likelihood of the offspring having freckles and not having freckles cannot be determined.
Answers: 1
Soils contain small or trace amounts of many minerals, including the chemical elements phosphorus, c...
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