1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
bulgar [2K]
3 years ago
11

Which of the following are important when looking at a fossil? I. Where it's found II. How deep it's found III. The position it

was found in A) I, II, and III B) II only C) III only D) I and II
Biology
1 answer:
kkurt [141]3 years ago
7 0

The correct answer is - D) I and II.

When a fossil is found, one of the most important things that need to be looked at are the location where the fossil was found and how deep the in the ground the fossil was found.

The location of the place where the fossil is found is important as it can provide us with information about the environment of where the fossil lived, the geography of the place, was it land or water. Since reconstructions of the geological past have already been made, an experienced paleontologist will manage to use it without any problem.

How deep is the fossil found is also very important. The reason for that is that certain layer in the ground is a part of certain geological eon, era, period... By looking at the layer in which the fossil has been found we can relatively easily come to an information about its relative age.

You might be interested in
What are the two primary methods of DNA typing
romanna [79]
Methods of DNA typing for identity, parentage, and family relationships. RESTRICTION FRAGMENT LENGTH POLYMORPHISM (RFLP) ANALYSIS.
6 0
3 years ago
DCCD (dicyclohexylcarbodiimide) inhibits oxidative phosphorylation when the substrate is mitochondrial NADH. DCCD is a drug that
VARVARA [1.3K]

Answer:

A) Decreases cellular energy production

B) DCCD also affects K+ transport

Explanation:

A) Consequences are of DCCD on cellular energy production: <em>Decreases cellular energy production</em>

ATP-synthase pump is composed of two subunits: F1 catalytic subunit that synthesizes ATP, and F0 proton pumping subunits, that transport H+ through the membrane. F1 subunit might act independently of F0 to produce ATP, but this molecule can not be released without H+ gradient, which generates a movement necessary for ATP release from the catalytic center.

When any of the parts composing F0 react with DCCD, the subunit can not transport H+ through the membrane. DCCD inhibits the enzyme activity by blocking the protons´ flow.

As DCCD blocks the protons´ flow, and the protons´ flow is necessary to release the ATP molecule from the F1 subunit, no other ADP + Pi can enter to F1 subunit, and the production of ATP stops.

B) Other cellular effects of DCCD

There seem to be other effects of DCCD on cell activity, some of which are still under study. To name a few:

  • Diimide from DCCD seems to stimulate cytochrome b reduction and inhibits its reoxidation by ferricyanide.
  • When exposing the cell to high concentrations of DCCD for a long time, might occur an alteration in the electron transporting chain
  • Inhibition of ubiquinol-cytochrome c reductase activity when exposing the cell to high concentrations of DCCD.
  • Inhibition of K+ transport, associated with the inhibition of H+ transport.

Concerning the effect of DCCD on the K+ transport, DCCD stops the extrusion of H+ and the consequent intrusion of K+.

DCCD strongly inhibits the simultaneous flow of H+ and K+. First, it inhibits H+ flow, acidification of the environment stops, but at this point, K+ keeps moving through the membrane. Once the H+ flow has ceased, the K+ flow slowly decreases until it finally stops moving. There is a lag time in the DCCD effect on K+ flow to the instantaneous effect on H+ flow.

5 0
3 years ago
Which of the following pairs is not a correct monomer/polymer pairing?
ahrayia [7]
C, triglyceride and cellulose

triglycerides make up lipids. cellulose is not a lipid, but a carbohydrate. carbohydrates are made from sugars :)
8 0
3 years ago
Plz answer this for me
Katarina [22]

Answer:a

Explanation:

6 0
3 years ago
Read 2 more answers
Sporophytes are? <br> a. Gametes <br> b. zygotes <br> c. haploid <br> d. diploid
Readme [11.4K]
It's D.diploid
<span>in the life cycle of plants with alternating generations) the asexual and usually diploid phase, producing spores from which the gametophyte arises. It is the dominant form in vascular plants, e.g., the frond of a fern.</span>
5 0
3 years ago
Read 2 more answers
Other questions:
  • Identify the earth motion that provides the basis for our system of local time and time zone
    7·1 answer
  • Our evidence indicates that T. rex shares more features with_________ than with the other groups of animals.
    9·1 answer
  • A small hollow within the brain that is filled with cerebrospinal fluid
    6·1 answer
  • Where in a prokaryotic cell do the reactions of glycolysis occur?
    12·2 answers
  • Ciliates are ______ relative to their outside solution.
    15·2 answers
  • The isolation of cell-cycle mutations in yeast was greatly facilitated by the use of _______________ mutations, which allow inve
    15·1 answer
  • In yeast cells the process that occurs when there is not enough oxygen for aerobic respiration is called ?
    7·1 answer
  • Photosynthesis takes in the __________ specifically in a green pigment called _________.
    14·2 answers
  • All of these ___ help to block, trap or flush pathogens out of the body.
    10·1 answer
  • A food which has been grown without the use of some but not all synthetic pesticides, synthetic fertilizers, or bioengineering c
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!