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TLS Online TPP Program

#Question id: 1301

The cell walls of bacteria, fungi, and plant cells, and the extracellular matrix of animal cells are all external to the plasma membrane. Which of the following characteristics are common to all of these extracellular structures?

#SCPH06 I Botany

  1. They must block water and small molecules to regulate the exchange of matter and energy with their environment.

  2. They must provide a rigid structure that maintains an appropriate ratio of cell surface area to volume.

  3. They are constructed of materials that are synthesized in the cytoplasm and then transported out of the cell for assembly.

  4. They are composed of a mixture of lipids and nucleotides.

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TLS Online TPP Program

#Question id: 550

#SCPH01 Biochemistry

Which of the following statements is false?
TLS Online TPP Program

#Question id: 3283

#SCPH28 | Zoology

if the forward ( p in to q) and reverse ( q in to p) mutation rates for alleles at a locus are 1×10−1 and 1×10−2 per generation, respectively and the allelic frequencies are p = 0.20 and q = 0.80. if you assuming random matting population. Which of the following observation correct?
TLS Online TPP Program

#Question id: 6968

#SCPH06 I Botany

In Xenopus, the mesoderm moves in through the blastopore by rolling around the dorsal lip in a process called:
TLS Online TPP Program

#Question id: 661

#SCPH28 | Zoology

Which technique is commonly used to determine the three-dimensional conformation of a protein?
TLS Online TPP Program

#Question id: 3557

#SCPH01 Biochemistry

What was the most significant conclusion that Gregor Mendel drew from his experiments with pea plants?