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
Salsk061 [2.6K]
3 years ago
11

If _______ is not present, the Krebs cycle and electron transport system will not function.

Biology
1 answer:
Sphinxa [80]3 years ago
5 0
It is oxygen my friend.
You might be interested in
A field biologist observed and recorded the ground squirrel population in a forest ecosystem over a 40 year period. During which
nordsb [41]
The answer will be B
6 0
3 years ago
The molecular clock has limited usefulness for estimating divergence times among species in part due to the saturation of DNA se
Greeley [361]

<u>Answer:</u>

<em>In highly diverged lineages, the substitutions process will occur at sites that have been substituted previously</em>.

<u>Explanation:</u>

Molecular clock uses the mutation rate to reduce the time in prehistory when the life forms are diverged. <em>The molecular clock uses the sequence of amino acids and nucleotide sequence for the DNA.</em>  

This clock does not measure any time but the number of mutations, and other changes over certain time.  <em>Sometimes its useful property might be limited due to the highly diverged lineages.</em>

8 0
3 years ago
White blood cells produce , substances that destroy pathogens in the body.
mihalych1998 [28]
White blood cells produce antibodies which fight off the pathogens
8 0
3 years ago
Read 2 more answers
A college student has been assigned to write captions for a new textbook on gravity and motion. This is one of the pictures from
denpristay [2]

Answer:

D

Explanation:

4 0
3 years ago
If ice is softer than rock, how can ice produce striations on materials harder than ice?
Andru [333]
That's because glaciers have rocks embedded in them, which cause these striations.
5 0
3 years ago
Other questions:
  • Are males and females fundamentally the same except for sexual organs or are they essentially different in many important ways?
    15·1 answer
  • Describe how the role of phloem would would be affected if the leaves start to die off
    9·1 answer
  • In Mendel’s pea plant experiments, which term best describes the white flower trait that is masked by the purple flower trait?
    9·1 answer
  • Why are hypotheses so valuable in the scientific community
    14·1 answer
  • Which arrows indicate weathering and erosion? Select correct arrows. Help :/
    15·2 answers
  • Pls Answer the questions below
    14·1 answer
  • What is the cell membrane made out of
    8·2 answers
  • Help please!!! don’t mind the answer that’s filled in already i don’t know the answer
    10·1 answer
  • An earthquake with a(n) of 7.2 releases about 30 times as much energy as an earthquake that registers 6.2 on the Richter scale.
    10·1 answer
  • What would happen if I hired two private investigators to follow each other?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!