Answer:
B) Water does not soak into the ground
Explanation: A runoff is when the water does not get soaked into the water after any type of perciptation. ex: rain or snow. The water in an runoff is from the water that the land couldn't absorb.
Synapse refers to the junction between two neurons that consists of the pre and post-synaptic membranes and the synaptic cleft. Synaptic cleft is the gap between pre and the post-synaptic membranes. Therefore, the main difference between synapse and synaptic cleft is the structure of each between the neurons.
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Answer:
E. All of these mechanisms are used; there is no single universal mechanism.
Explanation:
Gene expression is regulated at many levels. Some of them are:
- Chromatin remodeling regulation includes altered histone modifications such as methylation which can regulate gene expression (up or down).
- Transcription is regulated via transcriptional factors and specificity factors such as repressors and activators.
- RNA processing can be regulated through the alternative splicing (different introns can be excised and combinations of different exons connected)
- Post-translational modification refers to modification of proteins after being synthesized.
Answer:
Nucleus
Chromosome
Gene
Explanation:
A simple explanation is that genes make up chromosomes, and chromosomes are located inside the nucleus. DNA is a thin, long string of codes and sequences that are basically the blueprint for making YOU. Genes are sections of DNA that are then shaped into a chromosome. Usually, 46 chromosomes are inside the nucleus. Having more or less chromosomes can lead to genetic problems.
Here's a photo to visualize. This photo is from Coolaboo.