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Biology

1 answer:

Lunna [17]3 years ago

8 0

Answer: B.The aquatic species’ populations will decrease, and the ecosystem’s carrying capacity will increase.

Explanation:

Limiting factor can be define as the factor which is capable of reducing the population of a species. Carrying capacity can be define as the maximum number of the population of a species that a region or ecosystem can support in terms of availability of resources. The construction of a dam is likely to disturb the native habitat of the living species in the river. As it is going to cut the part of river. The construction of a dam is a limiting factor for aquatic animals species. Due to the decrease in the population of native animals the carrying capacity of a region will increase .

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What does the "oxidative" in oxidative phosphorylation mean?

ololo11 [35]

Answer:

Explanation:

Oxygen is the final acceptor of electrons in the process of oxidative phosphorylation. Without oxygen, the process becomes jammed with electrons.

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3 years ago

Suggest an intracellular regulatory molecule (from your text) that growth factors might stimulate to control cell division. Plea

vlabodo [156]

Answer:

E2F transcription factors

Explanation:

The E2F transcription factors (TFs) encode intracellular factors associated with the control of the cell cycle. E2F are TFs that bind to promoter consensus sequences in order to activate transcription. These TFs control the expression of target genes involved in cell proliferation including, among others, genes for DNA replication and mitotic activation. Moreover, the E2F proteins also may act as a link between cell fate and the cell cycle. The retinoblastoma (Rb) is a protein that modulates the activity of the E2F family of TFs, and it has been shown that the Rb/E2F pathway is a key molecular mechanism associated with cell proliferation.

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3 years ago

cell organelles In this lab, you will try to view as many cell organelles as you can at different magnification levels. Write an

CaHeK987 [17]

Answer:

What is the effect of power/magnification on the frequency and size of organelles under a microscope?

Explanation:

Organelles within the cell are responsible for carrying out various functions. Some cells are more specialized than others, and may have particular organelles at a higher frequency, or showing a variation in size; sub-cellular structures become more visible at higher magnifications under the microscope.

Hypotheses:

organelle A's frequency decreases while B's frequency increases at higher magnifications
organelle A's size increases while B's size decreases at higher magnifications

Dependent variables: size and frequency cell organelles

Independent variable: power/magnification at low (x4), medium(x10) and high (x40)

Controlled variables: Type of organelles, microscope used, cell examined,

Method:

1. Examine the organelles A and B in a cell mounted on a slide; use the fine adjustment to focus on the cell.

Frequency: What is the average number of organelle A versus B, seen at low (x4), medium (x10) and high (x40) magnifications?
Size: Measure the average diameter of organelle A versus B using an ocular micrometer at low, medium and high magnification.

2. Record and tabulate observations.

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4 years ago

Read 2 more answers

46.6% Oxygen (O)

goldenfox [79]

A im guessing? soz if i get it wrong.

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4 years ago

Transcribe the following DNA sequence to make mRNA molecule GGAATGAGAATTC

GenaCL600 [577]

CCUUACUCUUAAG is the mRNA sequence