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kipiarov [429]
2 years ago
7

A scientist has a fossil that was found in a layer of rock close to the Earth's surface. He believes that the fossil is around 1

2,000 years old.
Which method would best allow the scientist to confirm the actual age of the fossil?

Finding another fossil in a deeper layer

Finding another fossil in the same layer

using carbon/nitrogen absolute dating

using potassium/argon absolute dating
Biology
2 answers:
Simora [160]2 years ago
5 0
Finding another fossil in the same layer
kirill [66]2 years ago
5 0

Answer:

b

Explanation:

i took the test

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Answer:

intrinsic

Explanation:

Proteins are dynamic molecules that are capable of INTRINSIC motion that can have important functional relevance. The existence of this type of motion has suggested that enzymes are capable - even in the absence of substrate - of many of the same movements that can be detected during their catalytic cycle

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What is the role of spindle fibers in mitosis?
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Answer:

They help equally devide the cell.

Explanation:

Spindle fibers form a protein structure that divides the genetic material in a cell. The spindle is necessary to equally divide the chromosomes in a parental cell into two daughter cells during both types of nuclear division: mitosis and meiosis. During mitosis, the spindle fibers are called the mitotic spindle.

SOURCE: Nature.com

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2 years ago
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When blood glucose is low, the pancreas releases glucagon, a peptide hormone which stimulates the liver to produce and excrete g
kipiarov [429]

Answer:

the questionnaire is incomplete, the graph with the options is attached

Explanation:

1.

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Fructose 2,6 biphosfatase

3’5’ cyclic AMP

Phosphorylase b kynase

Glycogen syntetase kinase

Glucagon decreases

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Fructose -2,6- biphosphate

2.

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8 0
2 years ago
A number of major evolutionary innovations arose in the fish lineage. Check all of the evolutionary innovations associated with
Olegator [25]

Answer:

a) Teeth arose from the rough scales of ancestral sharks.

b) Skeletal developments leading to the amphibian movement onto land probably evolved from lobe-finned fishes.

d) The anterior gill arch formed the basis for the evolution of the vertebrate jaw.

Explanation:

The animals we know today have physical characteristics that are evolutionary adaptations of characteristics of their ancestors, which have undergone a series of evolutions and modifications over the years giving rise to new species that have resulted in the species we know today. This process of evolutions and adaptations also happened with the ancestral species of fish, which allowed that today, they had characteristics such as teeth and jaws. Many of these evolutions occurred even in different species, such as the evolution that allowed the amphibians to have a skeleton, which evolved from the spine fins of fish.

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Where in the cell does translation take place
frutty [35]
Translation occurs in the cytoplasm
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3 years ago
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