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ser-zykov [4K]
3 years ago
9

How are different techniques used to determine the absolute ages of rocks

Biology
1 answer:
Aleks04 [339]3 years ago
7 0

Answer:

Geologists find absolute ages by measuring the amount of certain radioactive elements in the rock. When rocks are formed, small amounts of radioactive elements usually get included. As time passes, the "parent" radioactive elements change at a regular rate into non-radioactive "daughter" elements.

Explanation:

I got this from g o o g l e.

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explain how an enzyme works using the terms catalyst, enzyme, active site, substrate, and product please.
dusya [7]

Answer: The enzyme or the Catalyst works by combining with its substrate in the activation site and converts it to Products.

5 0
3 years ago
Which is not evidence for the endosymbiotic origins of mitochondria and chloroplasts?
Zolol [24]

Mitochondria and chloroplast have similar DNA, which is not evidence for the endosymbiotic origins of mitochondria and chloroplasts.

According to the endosymbiotic theory, a chloroplast and a mitochondria were the independent prokaryotes. Both can be ingested by a large prokaryote and resist digestion. As a result, they continued as endosymbionts and eventually lost some of their autonomic properties. They divide by binary fission, have their own genetic material, possess 70s ribosomes, and Both include their own transcriptional and translational machinery.

Therefore, considering endosymbiotic origin theory, Both Mitochondria and chloroplast have similar DNA is not a piece of evidence.

Learn more about endosymbiotic origins theory here

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6 0
2 years ago
What passes through a cell using passive transport?
Tanzania [10]
Passive transport is a movement ofbiochemicals and other atomic or molecularsubstances across cell membranes without need of energy input. Unlike active transport, it does not require an input of cellular energy because it is instead driven by the tendency of the system to grow in entropy. The rate of passive transport depends on thepermeability of the cell membrane, which, in turn, depends on the organization and characteristics of the membrane lipids andproteins. The four main kinds of passive transport are simple diffusion, facilitated diffusion, filtration and osmosis.
7 0
3 years ago
Human proteins can be produced by cells in the milk-producing mammary glands of transgenic mammals if the regulatory sequence of
Vesnalui [34]

Answer:

The given blank can be filled with location of gene expression.

Explanation:

A regulatory sequence refers to a section of a molecule of nucleic acid that possesses the tendency of declining or upsurging the expression of particular genes within an organism. The regulation of gene expression is an important characteristic of all living species and viruses.  

In the given case, it is essential to use the regulatory sequence of a milk gene when developing a recombinant gene as a regulatory sequence monitors the location of gene expression.  

4 0
3 years ago
A train rumbles along the tracks at high speed.
Nutka1998 [239]

Answer:

Mechanical --> Thermal

Explanation:

4 0
3 years ago
Read 2 more answers
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