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Masteriza [31]
3 years ago
5

How many covalent bonds does carbon typically form? 1, 2, 3, or 4

Biology
2 answers:
jeyben [28]3 years ago
7 0
Carbon can form four cobalt
Darya [45]3 years ago
6 0

Answer:

Carbon can form four covalent bonds

Explanation:

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PLEASE HELP!!
natta225 [31]

Answer:

I would say that the answer is A, or releasing ladybugs into a habitat.

Explanation:

This is the only "natural" way to control an aphid population. However, please note that as well as ladybugs, praying mantis's also eat aphids. But, the answer choice doesn't describe the option very well, so that is why I say that it is A.

<em>Hope it helps!</em>

8 0
3 years ago
Read 2 more answers
Halobacterium has a photosynthetic membrane that appears purple. its photosynthetic action spectrum is the inverse of the action
a_sh-v [17]

Yellow- Green Wavelength of light at peak absorption of 565nm.

Halobacterium is known to be a member of Archaea and they thrive in very salty environment such as Great Salt lake and Dead Sea. Halobacteria under the process of photosynthesis with chlorophyll and they make their ATP from the sunlight using bacteriorhodopsin and halorhodopsin as photosynthetic pigments.

However, photosensory pigements found in Halabacterium were:

1. photosystem 565 which is used to respond to yellow –green light in other for cell to find optimum conditions for ATP synthesis and photophosphorylation and they have peak absorbtion at 565nm.

2. Photosystem 370 nm appears to be responsible for the protective avoidance of blue/UV light.

6 0
2 years ago
How much Listerine do i need to drink in order to get drunk
sergeinik [125]

Original formula Listerine is 26.9% alcohol, making it approximately 54 proof. According to the US, one "standard" drink contains roughly 14 grams of "pure" alcohol—so one standard drink of Listerine is 2.2 fl. oz. (so there are about 23 standard drinks in one 1.5 L bottle of Listerine).

6 0
3 years ago
Read 2 more answers
Cells transport molecules into the cell in many different ways. One method is through endocytosis, shown in the model. In endocy
Fudgin [204]

Answer:

This is because fluids have a polar nature, so they couldn´t cross the lipidic bilayer that constitutes the plasma membrane

Explanation:

Plasma membranes are contituted by lipid bilayers. These kind of compounds are hidrophobic (they reject water) and don´t permit the freely passage of hidriphilic molecules that can disolve in water, constituing fluids. Because of that cells developed transport mechanism like endocytosis.

4 0
3 years ago
Read 2 more answers
Which organelle is not found in plant cells ? Vacuoles mitochondria chloroplasts centrioles
Andru [333]
Answer: D) Centrioles

-------

Centrioles are only found in animal cells and they help during cell division. They organize the spindle fibers that help elongate the cell and separate the chromosomes.
8 0
3 years ago
Read 2 more answers
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