All cells in the body have the same genes, but cells become differentiated due to differences in gene expression.
True or False
TrueFalse
What cellular events must occur to establish the body pattern in an animal? (Check all that apply.)
Check All That Apply
Cell division
Cell divisionHybrid formation
Hybrid formationCell migration
Cell migrationAll cells live
All cells liveCell differentiation
Cell differentiationApoptosis
ApoptosisThe first morphogen gradient to provide positional information is established initially in the cellularized embryo.
True or False
TrueFalse
In: Biology
Discuss the concept of radial patterning and its application to epidermal and vascular development.
In: Biology
Leeches and Earthworms are both categorized under the same class. How do their tegument differ?
In: Biology
In: Biology
In: Biology
Consider the oxidation of a single glucose molecule. How many carbons from that glucose molecule remain to be oxidized following a single turn of the TCA cycle?
In: Biology
Can someone explain the differences between thermophiles, mesophiles, halophiles, acidophiles, etc. and under what environmental conditions they would survive successfully?
In: Biology
16. Which of the following best describes when a population has reached carrying capacity within an ecosystem
(A) Birth rate= death rate
(b) Population growth accuracy exponentially
(c) Organism are adjusting to new environmental conditions
(d) Birth rate exceed death rate
In: Biology
Questions
1. Which of the following is true for the omega angle in the protein backbone?
a. it equals 180 degrees.
b. the orientation of the bonds around the peptide bonds is Cis.
c. it may have any value between 0 to 180.
d. the most common values of omega angel are 60 to 120.
2. Which of the following can not apply to heat shock protein?
a. They are proteins found only in eukaryotes.
b. They form complexes with unfolded cellular protein which cannot fold spontaneously, to help them fold properly.
c. the protein to be folded is held with a chamber of the chaperonin protein complex.
d. If a protein released from chaperonin has not been folded properly, the heat shock proteins can bind the unfolded to make another folding.
In: Biology
Part 1: Primates vs. Non-Primates
Use material you find online or find images and descriptions of two non-primate mammals (e.g., dogs, horses, dolphins, raccoons, etc.). (Note: copy and paste small images of the non-primate mammals you choose. Please be creative and don’t just use the examples I listed here!).
1. What traits do these animals share in common with primates?
2. What important primate traits do they lack?
In: Biology
In: Biology
Class Merostomata and Class Arachnida inhabit very different environments, identify the main challenges faced by each organism in these different environments and identify three ways each has adapted for its habitat.
In: Biology
Describe the process of electron transport provided by NADH and FADH2 through the electron transport chain
In: Biology
How is eukaryotic cell division different from prokaryotic? ( I know prokaryotic is simpler, but i need a little more explanation)
In: Biology
I have a research about the "Nano-wafers", and i need to write an outline and some points that i can address in my paper
In: Biology