BIOLOGY MIDDLE SCHOOL

Which of the following contains the greatest number of unipotent stem cells? A. 6-week-old embryo B. Blastocyst C. Adult D. 3-day-old embryo

Answers

Answer 1
Answer:

The correct answer is option C

Unipotent stem cells are those stem cells that can form cells of one lineage only. An adult would be having the maximum number of unipotent stem cell as it has gone through the process of cell differentiation and the cell have been differentiated into different kinds of cells. For example: skin stem cells

The stem cells of embryo are mainly pleuripotent and multipotent that can form cells of different lineages.
Answer 2
Answer: An adult, since they are fully grown, they possess the most unipotent cells.

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Only answer if you have an answer to one of the questions. Thank you.
Why is carbon important

The structure labeled x most likely represents

Answers

The propositions are :
(1) an antibody 
(2) an enzyme 
(3) a receptor molecule 
(4) a hormone

The right answer is an enzyme because it has catalytic activity. It transforms a substrate which is the starch to product(s) which are dextran and maltose

It is not an antibody because it does not have catalytic activity as a major role.
It is not a receptor molecule, because they cannot transforms molecules and forms products
It is not a hormone because it does not have a catalytic activity

Final answer:

In chemistry, a structure labeled 'X' can refer to different things depending on the context. 'X' might refer to a specific atom within a Lewis structure or a point of maximum deformation (the amplitude) on a wave. It could also refer to specific atomic arrangements such as a molecule with an octahedral electron-group geometry.

Explanation:

The question is asking about a structure labeled 'X', which could refer to various concepts within a chemistry context. However, given the information provided, it's likely that 'X' refers to either a specific molecule within a Lewis structure, or it could indicate a point on a waveform (in the context of quantum mechanics) that represents maximum deformation (the amplitude of the wave).

For example, if using the formal charge criteria, 'X' could signify a particular atomic structure with a desirable formal charge of zero. However, without a detailed diagram or further context, these are educated estimations.

Beyond atomic structures or wave patterns, 'X' might also signal specific molecule arrangements like an atom with four single bonds, a double bond, and a lone pair resulting in an octahedral electron-group geometry and a square pyramidal molecular structure. One such instance is the XeOF4 molecule.

Learn more about Chemistry: Atomic Structures here:

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What happens to the amount of water in the high plains aquifer over time

Answers

The temperature changes for sure depending on where it is.

The lion-tailed macaque is a species of Old World monkey. Which of the following will the lion-tailed macaque reproduce with? A.
other lion-tailed macaques

B.
other macaques

C.
any Old World monkeys

D.
any monkey species

Answers

A.
other lion-tailed macaques

Answer: A. other lion-tailed macaques

What are two examples of mechanical digestion? Select both. a
Muscular squeezing and mixing.
b
Enzymatic break down of large molecules.
c
Chewing in the mouth.
d
Acids in the stomach break down food.

Answers

i believe its B and D as they're both acids/enzymes

What are 2 ways that meiosis leads to genetic variation? How do they lead to variation?

Answers

Answer:

1. Through random mutations that happen during the reproductive process.

2. Different pairs of chromatids join together

Choose the best definition of sustainability in terms of the environment.

Answers

the avoidance of the depletion of natural resources in order to maintain an ecological balance
Sustainability is the ability to meet the needs of the present without compromising the ability of future generations to meet their own needs. This is the definition of sustainability as created by the United Nations World Commission on Environment and Development.
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