Cells
What do biologist post on Instagram?
Cell-fies
What do you call an organic compound with an attitude?
A-mean-o acid
Why did the mushroom go to the party?
Because he was a fun-gi
Why do ants never get sick?
Because they have little anti bodies
What do cells say to a geneticist before mitosis?
I hope I have your divided attention
What do hipster biologists wear?
Skinny genes
What do other plants do when another plant is sad?
They photosympathize
What’s the tiniest virus in the world?
Smallpox
A cell stepped on her sister’s toe. What did the sister say?
“Ouch, mitosis”
How do you understand genetics in cold weather?
Put your codon
Why couldn’t the plants escape prison?
Because there were walls outside their cells!
Where did the viruses go?
They flu away
If chemical signals in the cytoplasm control the progression of a cell to the M phase of the cell cycle, then fusion of a cell in G1 with a cell in early M phase would most likely result in the:
A. replication of chromosomes only in the G1 cell
B. exiting of both cells from the cell cycle and into G0 phase
C. condensation of chromatin in preparation of nuclear division in both cells
D. transfer of organelles from the G1 cell to the cell in M phase
C. condensation of chromatin in preparation of nuclear division in both cells
Rosalind Franklin's x-ray diffraction images taken in the 1950s most directly support which of the following claims about DNA?
A. The ratio of base pairs are constant
B. The nucleotide sequence determines genetic information
C. The two strands of DNA are antiparallel
D. The basic molecular structure is a helix
D. The basic molecular structure is a helix.
Using rice plants, scientists examined the effect of a mutation that results in the loss of the protein CRR6. CRR6 is a part of the photosystem I complex, and its absence reduces the activity of photosystem I. Predict the effect of the mutation on the rate of biomass accumulation. Justify your prediction.
The rate of biomass accumulation will be lower compared to plants without the mutation because there will be insufficient ATP produced for the synthesis of carbohydrates
Introduction of mRNAs into cells allows the cells to produce foreign proteins that they might not normally produce. Explain why the production of a foreign protein may be more likely from the introduction of mRNA than DNA into cells.
Any of the following:
Protein production from the DNA requires transcription factors to initiate transcription
Protein production from the mRNA does not depend on correct post transcriptional processing of the pre-mRNA
The cells may be unable to transcribe the DNA while mRNA can be directly translated