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WorksheetsBiology Snapshot 1 Review 2020
Total questions: 11
Worksheet time: 8mins
Nucleic acids are made of nucleotides. The part of a nucleotide that contains the genetic code is --
deoxyribose sugar
nitrogen base (A, T, C, G)
hydrogen bonds
phosphate group
The mitochondria is the powerhouse of the cell. Which process occurs in the mitochondria and generates ATP (energy)?
protein synthesis
photosynthesis
aerobic cellular respiration
lactic acid fermentation
Movement of molecules from an area of low concentration to an area of high concentration is called --
osmosis
passive transport
diffusion
active transport
What occurs just before the spindle fibers pull the sister chromatids apart?
nuclear membrane breaks down
chromosomes line up in the middle of the cell
nuclear membrane reforms
cytoplasm divides
Why does a virus need a host cell?
To reproduce
To do interphase
To have a cell membrane
To have DNA or RNA
Human Immunodeficiency Virus (HIV) infects CD4 T cells and kills them. The death of these cells will
Increase your risk of high blood pressure
Increase the chance that you contract a secondary infection caused by a virus or microorganism.
Increase your risk of low blood pressure
A decrease of oxygen.
Does a change in one base always result in a different protein being produced?
Yes. The change prevents mRNA from being made.
No. The change creates n additional mRNA strand.
No. Some codons code for the same amino acid.
Yes. Mutations are always passed from generation to generation.
The monomers (building blocks) of proteins are --
monosaccharides
triglycerides
nucleic acids
amino acids
Diffusion (movement from high concentration to low concentration) of water is called --
simple diffusion
facilitated diffusion
osmosis
active transport
The bonds that hold the nitrogen bases (A, T, C, G) together are called --
nitrogen bonds
hydrogen bonds
peptide bonds
oxygen bonds
Which process occurs just before the cell enters the G2 stage of the cell cycle?
Cytoplasm divides
Centrioles double
Nuclear membrane dissolves
DNA replicates
