Question 47 (multiple choice worth 1 points)
which phase of meiosis lines the chromosome...
Question 47 (multiple choice worth 1 points)
which phase of meiosis lines the chromosomes up in the center of the cell?
metaphase
prophase
anaphase
telophase
question 48 (multiple choice worth 1 points)
the ribosomes are responsible for
digestion
storage
manufacturing proteins
transportation within the cell
question 49 (multiple choice worth 1 points)
gametes are
involved in mitosis
sperm and egg cells
sperm cells only
egg cells only
Answers: 1
Biology, 21.06.2019 13:30, joyelewis58
Which phrase best describes surface currents? 1. up-and-down ocean movement caused by wind 2. waves that hit the shore at an angle and transport sand 3. streams of warm water flowing through the ocean and caused by wind 4. waves that approach the shore and cause their crests to fall into their troughs
Answers: 1
Biology, 21.06.2019 22:00, misscheoneyo
Which statement best describes the relationship between an allele and a gene? question 1 options: an allele is a variation of a gene that can be expressed as a phenotype. an allele is the part of a gene that attaches to messenger rna molecules. an allele is a segment of a dna molecule that controls replication of a gene.
Answers: 3
Biology, 22.06.2019 03:30, gaby6951
Rease is an enzyme used by plants to break down urea (a nitrogen-containing compound) into carbon dioxide and ammonia. urease urea > > > carbon dioxide and ammonia ammonia is broken down by plants into a nitrogen source plants need to grow. thus, plants could not use urea as a nitrogen source unless it was first converted to ammonia. in soybean plants there are two different kinds of urease, one produced in the seeds and the other produced in the leaves of the plant. three types of soybean plants were used in a set of experiments: normal soybeans and two mutant strains, one lacking the urease in the seeds only (strain 1) and one lacking urease in the leaves only (strain 2). experiment 1 separate areas in a field were planted with normal, strain 1, and strain 2 soybeans. all types of soybeans appeared to grow, flower, and produce seeds equally well. there were no externally detectable differences among the strains. experiment 2 small pieces of plant leaves of equal weight were obtained from each type of soybean plant and separately placed on media in culture dishes. tissue growing in this way will become an unorganized clump of cells referred to as callus. to provide a controlled nitrogen source, half the tissue samples of each type were placed on media containing urea, and the other half of the samples were placed on media containing ammonia. after 30 days, the weight gain for each of the callus samples was determined. results are shown in the table below.
Answers: 2
Mathematics, 14.07.2020 01:01
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Biology, 14.07.2020 01:01
Mathematics, 14.07.2020 01:01
Mathematics, 14.07.2020 01:01