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arlik [135]
3 years ago
9

37.

Biology
2 answers:
Julli [10]3 years ago
7 0

Answer:

Substrate. The substrate is the surface on which the river organisms live. It may be inorganic, consisting of geological material from the catchment area such as boulders, pebbles, gravel, sand or silt, or it may be organic, including fine particles, leaves, wood, moss and plants.

Dmitrij [34]3 years ago
4 0

Answer:

cobbles

Explanation:

bc i have a river in the back of my yard

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9. Which of the following is considered a Local Histone Mobilization (circle all the correct ones and explain each) a. Ejection
kati45 [8]

Answer:

Phosphorylation

Methylation

Explanation:

Histone mobilization deals with the covalent bonding of several functional groups to the free nitrogens in the R-groups of lysine in the N-terminal tail.

DNA transcription can be controlled or altered via 'methylation' on the histones. Methylation is the mode of transferring methyl group to amino group of histone proteins that form the nucleosomes, which result to chromosomes formation through wrapping of DNA double helix around it. Histones methylation can either increase or decrease genes transcription. Chromatin modification is known to stimulate neural pathways that are essential for long memories and learning.

Histones phosphorylation is associated transcriptional activation. It deals with the transfer of phosphate group to amino acids of the proteins. Phosphate group known to be negatively charged, when transferred to amino acids of the histone proteins, it creates a repulsive force with the negatively charged phosphates of the DNA backbone. It can occur in serine, tyrosine and threonine. The enzymes kinases activate phosphorylation, while protein phosphatases remove phosphate groups.

6 0
3 years ago
Formulate a statement that explains the relationship between chemical elements and mineral properties..
Svetach [21]
Molecular structures of an object directly affect its physical properties (especially intensive features) such as color, density, melting and boiling points, malleability etcetera.
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4 years ago
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If an animal has long canine teeth and sharp molars it is probably a
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Aerobic or anaerobic atp exchange <span />
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Your first big biology exam is coming up in a few days, and in order to prepare for late-night study sessions, you buy a box of
Irina18 [472]

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If you ate the cake the protein in the cake would become denatured

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