A scientist formed Chemical X in a laboratory. The material was then analyzed by other scientists.
Molecular Structure
of Chemical X

Analysis showed that the chemical was composed of long chains of repeated copies of
73. CH, molecules.
A researcher noticed that a similar CH2 molecular structure was also located in
the plasma membrane of an animal cell. This CH2 molecular structure contained a negatively
charged phosphate group. Which statement best describes the primary function of the CH2
and phosphate molecular structure located in the plasma membrane?
It catalyzes specific chemical reactions in the cytoplasm of a cell.
It allows a cell to regulate the movement of materials into and out of a cell.
It contains the genetic information needed for protein production.
Et stores the energy that a cell needs to perform various life processes.
ch words best complete the lettered blanks in the two sentences below?

Will mark brainliest i only need the ! 1.use ten beads and a centromere of one color to construct the long chromosome. use ten beads and a centromere of a second color to construct the second chromosome in the long pair. make a drawing of the chromosomes in the space below. 2. for the second pair of chromosomes, use only five beads. 3. now model the replication of the chromosomes. make a drawing of your model in the space below. part b: meiosis i during meiosis i, the cell divides into two diploid daughter cells. 4. pair up the chromosomes to form tetrads. use the longer tetrad to model crossing-over. make a drawing of the tetrads in the space below. 5. line up the tetrads across the center of your “cell.” then model what happens to the chromosomes during anaphase i. 6. divide the cell into two daughter cells. use the space below to make a drawing of the result. part c: meiosis ii during meiosis ii, the daughter cells divide again. 7. line up the chromosomes at the center of the first cell, one above the other. separate the chromatids in each chromosome and move them to opposite sides of the cell. 8. repeat step 7 for the second cell. 9. divide each cell into two daughter cells. use the space below to make a drawing of the four haploid cells

3test questions with answers on incomplete dominance

Anonnative species is best described as a species that a. does not normally live in an area b. has no permanent home c. is a poor predator d. increase biodiversity