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3 years ago

What type of rock is pictured here?

Biology

2 answers:

sveta [45]3 years ago

5 0

Answer: Granite.

Explanation:

Granite rock is a common type of felsic intrusive igneous rock that is granular and phaneritic in texture. Granites can be predominantly white, pink, or grey in colour, depending on their mineralogy.

Granite is nearly always massive (i.e., lacking any internal structures), hard, and tough. Granite has poor primary permeability, but strong secondary permeability through cracks and fractures if they are present.

9966 [12]3 years ago

3 0

Answer: im not sure this is it but its my best guess

Fundamental to understanding mountain geology is the nature of minerals and rocks, for the mountains are made out of rocks, and the rocks are made out of minerals. The simplest, most widely known and distributed mineral is quartz (silicon dioxide), which is made up of the elements silicon and oxygen.

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Coral reefs are among the world's richest ecosystems, second only to tropical rain forests. Like the tropical rainforest, the co

lisov135 [29]

Phytoplankton is the answer

i hope thisnhelps you

6 0

3 years ago

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If you were working with a unlabeled simple stained smear, would you be able to identify the bacterial species by observing the

Ainat [17]

No. One could only identify the category of the bacteria by observing for morphological features through simple staining. The size, shape and how the bacteria are organized in colonies are used to identify bacteria categories. Bateria can be classified as vibrio, cocci, streptococci, and etcetera

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4 years ago

Define embryonic stem cells. Explain the pros and cons of Embryonic Stem Cells

just olya [345]

Answer:

Embryonic stem cells are pluripotent stem cells derived from the inner cell mass of a blastocyst, an early-stage pre-implantation embryo. Human embryos reach the blastocyst stage 4–5 days post fertilization, at which time they consist of 50–150 cells.

Explanation:

Adult Stem Cells

Embryonic Stem Cells

Induced Pluripotent Stem Cells

Pros

Trans differentiate and and reprogramming of these cells is possible but is not well studied

Thought to be less likely to be rejected if used in transplants

Success has already been demonstrated in various clinical applications

Can maintain and grow for 1 year or more in culture

Established protocols for maintenance in culture

ESCs are pluripotent cells that can generate most cell types

By studying ESCs, more can be learned about the process of development

Abundant somatic cells of donor can be used

Issues of histocompatibility with donor/recipient transplants can be avoided

Very useful for drug development and developmental studies

Information learned from the “reprogramming” process may be transferable for in vivo therapies to reprogram damaged or diseased cells/tissues

Cons

Limitations on ASC ability to differentiate are still uncertain; currently thought to be multi or unipotent.

Cannot be grown for long periods of time in culture

Usually a very small number in each tissue making them difficult to find and purify

Currently there is no technology available to generate large quantities of stem cells in culture

Process to generate ESC lines is inefficient

Unsure whether they would be rejected if used in transplants.

Therapies using ESC avenues are largely new and much more research and testing is needed

If used directly from the ESC undifferentiated culture prep for tissue transplants, they can cause tumors (teratomas) or cancer development

Methods for ensured reproducibility and maintenance, as differentiated tissues are not certain.

Viruses are currently used to introduce embryonic genes and has been shown to cause cancers in mouse studies

7 0

3 years ago

There is a population where the frequencies of allele 1 and allele 2 are 0.7 and 0.3, respectively. Allele 1 has a selection coe

Lorico [155]

Answer:

0.8

Explanation:

There is a population where the frequencies of allele 1 and allele 2 are 0.7 and 0.3, respectively

Let's use GG to represent allele 1

Let's use gg to represent allele 2

So we can equally say that;

GG = p = 0.7

gg = q = 0.3 ( from Hardy-Weinberg Equilibrium)

So, given that the selection coefficient = 0.2

We known that the cross between GG and gg will definitely results to (GG,Gg and gg)

Then the fitness of these genes can be represented as:

1 - s, 1 and 1 - t respectively.

Thus. the allele 1's genotype fitness can be determined as

= 1 - s ( where s is the selection coefficient)

= 1 - 0.2

= 0.8

6 0

3 years ago

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On a sunny day at an open market a vendor, Ms. Milly, occasionally sprinkles water on her wilting lettuce. During the day Ms. Mi

stellarik [79]

The process that results in Ms. Milly’s wilting lettuce becoming firm is osmosis. The explanation is below.

OSMOSIS:

Osmosis is the process by which water molecules move from a region of high concentration to a region of low concentration via a semipermeable membrane.

According to this question, Ms. Milly, occasionally sprinkles water on her wilting lettuce and notices that they became firm.

The firmness of the lettuce is as a result of the movement of water into the leaf cells due to a process called osmosis.

Learn more at: brainly.com/question/13655668?referrer=searchResults

8 0

3 years ago

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