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Helga [31]
3 years ago
11

Which of the following best describes the main idea of the endosymbiotic theory

Biology
2 answers:
stealth61 [152]3 years ago
7 0
The endosymbiotic theory states that eukaryotic cells might have evolved from prokaryotic cells through a close realtionship.
Tresset [83]3 years ago
6 0
The endosymbiotic theory states that eukaryotic cells might have evolved from prokaryotic cells through a close realtionship.
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Researchers present adjectives to students followed by questions. The students are asked if the adjectives describe their person
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It sounds like semantic encoding. This basically means teaching a person something that can be applied to some sort of context (hence it describing themselves).
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2 years ago
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Which of the following BEST describes how energy flows in this ecosystem?
irina1246 [14]

Answer:

D. About ten percent of the energy at one trophic level is passed to the next trophic level

Explanation:

In an ecosystem, the amount of energy decreases at each trophic level. Precisely, <u>the energy transfer from lower trophic level ot high trophic level is calculate to be 10% of the previous level</u>. Rest of the energy is just wasted through metabolic activities (e.g. heat). For example, if a grassland ecosystem has total energy of 10,000 Kcal, only 1000 Kcal would be transferred to the primary consumers, and then 100 Kcal to secondary consumers, and finally 10 Kcal to tertiary consumers. See figure for better understanding.

First option is incorrect because energy flow in an ecosystem is unidirectional. Option B and C are incorrect because energy flow is not dependent on specific animal/plant species but rather at trophic levels.

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3 years ago
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How would the shape of a plant cell be different to a epithelial cheek cell
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Answer:

Overview

Adipose tissue, or body fat, is loose connective tissue composed mostly of adipocytes. In addition to adipocytes, adipose tissue contains the stromal vascular fraction (SVF) of cells including preadipocytes, fibroblasts, vascular endothelial cells and a variety of immune cells (i.e., adipose tissue macrophages) [1] (Figure 1). Adipose tissue is derived from preadipocytes. Its main role is to store energy in the form of lipids, although it also cushions and insulates the body. Far from hormonally inert, adipose tissue has, in recent years, been recognized as a major endocrine organ [2], as it produces hormones such as leptin, estrogen, resistin, and the cytokine TNFα. Moreover, adipose tissue can affect other organ systems of the body and may lead to disease. The two types of adipose tissue are white adipose tissue (WAT), which stores energy, and brown adipose tissue (BAT), which generates body heat.

iXCells offers a wide collection of primary cells isolated from human and rodent adipose tissues, including Stromal Vascular Fraction (SVF), Adipose-Derived Stem Cells (ADSCs), Preadipocytes (PAds). These cells are are fully validated by marker staining, flow cytometric analysis and differentiation. They are negative for HIV-1, HBV, HCV, mycoplasma, bacteria, yeast, and fungi.

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3 years ago
What is the function of glucose in the human body
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What is mass?
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Mass is the amount of matter in a substance measured in kilograms

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