The pattern of leaf arrangement on a stem is called

A. protodermis.
B. meristematic spacing.
C. nodular termini.
D. phyllotaxy.
E. axillary arrangement.


Answer: D

Biology & Microbiology

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In the translation process, what occurs when a stop codon is encountered?

a. A new protein is released. b. The ribosome accepts charged tRNAs. c. A large ribosomal unit joins a small unit. d. Energy is obtained from GTP.

Biology & Microbiology

The ____ is a bone of the lower leg in humans

a. femur b. tibia c. radius d. ulna e. humerus

Biology & Microbiology

Which of the following statements about CRISPR are accurate? Select all that apply.A) CRISPR was first discovered in single-celled eukaryotes.B) Where naturally found in cells, CRISPR acts as a form of immune defense against viruses.C) CRISPR utilizes an endonuclease enzyme called Cas9.D) CRISPR can only be used by researchers to target a specific sequence of nucleotides in single-celled prokaryotes and eukaryotes.E) CRISPR requires a guide RNA molecule to identify the nucleotide sequence destined for editing.

What will be an ideal response?

Biology & Microbiology

Refer to the accompanying figure. Based on the phenotypes of the third generation, the genotype of the father in the second generation must be:


a. homozygous for albinism.
b. heterozygous for hair color.
c. heterozygous for albinism.
d. X-linked.
e. dominant

Biology & Microbiology