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defon
3 years ago
11

eres is a rocky celestial body located in the main asteroid belt. It has a nearly spherical shape and orbits the Sun. There are

several asteroids in its orbit. Based on this information, which type of body is Ceres?
Biology
1 answer:
Olin [163]3 years ago
3 0
Ceres is a dwarf planet.
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Why are solar energy and heat important to the global climate system?
dolphi86 [110]

Answer:

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Solar power drives Earth's climate. Energy from the Sun heats the surface, warms the atmosphere, and powers the ocean currents.

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6 0
3 years ago
Which is NOT an immune component that can directly attack & destroy target cells?
lara31 [8.8K]

Answer:

Macrophages are part of your innate immune system, which is antigen-independent and does not require activation.

Explanation:

Macrophages phagocytize (internalize) all non-self pathogens it encounters. These do their job without activation. Other cells in the innate immune system include basophils, neutrophils, eosinophils (these cells are polymorphonuclear leukocytes), mast cells, and dendritic cells, which act as the bridge between your innate and adaptive immune system.

All of the other entities listed above are part of your adaptive immune system. The adaptive immune system is antigen-dependent and requires activation. This section of your immune system responds differently to different pathogens, and has the bonus of having immunologic memory, the ability to remember pathogens after infection and respond much quicker upon secondary and tertiary encounters.

Note: All lymphocyte types begin as naïve cells, which then differentiate into their fully matured form upon activation.

Helper T cells are a type of CD4+ T cell that has the job of activating B and T lymphocytes. There are two different types of T helper cells: Th1 and Th2. Th1 cells secrete the cytokine interferon-gamma (IFNγ), and is primarily involved with the stimulation and activation of cytotoxic T cells, while Th2 cells secrete a variety of cytokines and are responsible for activating and assisting with B cells to make antibodies. To make a long story short, Th cells interact with APC (Antigen Presenting Cells), specifically their Class II MHC (a group of genes that present exogenous proteins). The Th cells then proliferate and gain the ability to activate these APC cells and provide the necessary signals to activate B and T cells and make them proliferate and do their specific function.

7 0
3 years ago
The second part of the mitotic phase, during which cell division is completed by the physical separation of the cytoplasm compon
Allisa [31]
"<span>The second part of the mitotic phase, during which cell division is completed by the physical separation of the cytoplasm components into two daughter cells is called telophase."

Telophase is the last phase of mitosis. The name itself indicates terminal (telo) phase. </span>The chromosomes get to the cell poles and nuclear membranes are formed around each set of chromatids. The actual cell division is called c<span>ytokinesis and it starts at the end of the telophase.</span>
6 0
3 years ago
What would most likely happen to a native predator species if a nonnative predator species were introduced to an area?
Fantom [35]

Answer:

B. The native species population would decrease because the nonnative species would be competing for food sources.

Explanation:

This question is describing the effect of invasive species. Invasive species are foreign species i.e. not native to a habitat or area, introduced into the area with the ability to outcompete and negatively affect the native species of that area.

Invasive species compete with the native species for food, space, mate etc., and tend to outgrow them. Hence, if a nonnative predator (invasive) species were introduced to an area, the native predator species in that area would decrease because the nonnative species would be competing for food sources.

5 0
2 years ago
Introducing additional organisms of the same existing kinds will not upset the ecosystem.
Drupady [299]

false, because if you add additional organisms, the food web would become lopsided, causing the organisms food to decrease.
8 0
3 years ago
Read 2 more answers
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