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
svlad2 [7]
3 years ago
10

Which of these was NOT characteristic of the first cells on Earth?

Biology
2 answers:
givi [52]3 years ago
8 0

The correct answer is (d) contained organelles.

The first life on earth were prokaryotes and they were anaerobic, single celled organisms that lack membrane bound organelles. The prokarytotic cells lack membrane bound organelles because they were simple single celled organisms. The membrane bound organelles were characteristic feature of eukaryotes, more complex organisms.

Hence, first cells on earth were prokaryotes and they did not contained organelles

shtirl [24]3 years ago
5 0
The answer is D contained organelles
You might be interested in
The χ2 value means nothing on its own--it is used to find the probability that, assuming the hypothesis is true, the observed da
vova2212 [387]

Answer:

A) The two genes are unlinked and are assorting independently, leading to a 1:1:1:1 ratio of phenotypes in the offspring.

Explanation:

The χ2 value means nothing on its own--it is used to find the probability that, assuming the hypothesis is true, the observed data set could have resulted from random fluctuations. A low probability suggests the observed data is not consistent with the hypothesis, and thus the hypothesis should be rejected. The hypothesis that you are testing are two genes are unlinked and are assorting independently, leading to a 1:1:1:1 ratio of phenotypes in the offspring.

4 0
3 years ago
What is the probability of producing a white rose when a red rose is crossed with a pink rose?
sammy [17]
A white rose cannot be produced in the G1 (first generation) of roses because the red rose will have a RR (R standing for red) allele combination. The pink rose will have a RW (R for red, W for white) <span>allele combination. When crossed all combinations will have at least one R allele, meaning that no roses (in the first generation) will have a WW allele combination. WW is the only allele combination that produces white roses.

(look up punnet squares for more help) </span>
8 0
3 years ago
For patients who have familial hypercholesterolemia, what should be the focus of teaching for blood cholesterol reduction
Brut [27]
<span>Taking lipid lowering drug as perscribed is the focus. Hypercholesterlmia is a condition where LDL is greater in the blood. So the level of such lipids should be lowered. Inactivity, obesity and unhealthy diet are causes. So the treatement should involve avoiding the situations leading to high LDL.</span>
6 0
3 years ago
Read 2 more answers
Can someone summarize The dual visual system to me AND color vision, like blindness etc...
Oduvanchick [21]

Dual visual system:

Dual visual system is nothing but the different visual systems that our brain is meant to direct.

The two visual systems are

  • Dorsal Stream
  • Ventral Stream  

Dorsal Stream:

Dorsal stream is mainly referred as a vision of action. This visual system is involved in moment by moment analysis. It is also known as where stream.

Ventral Stream:

Ventral stream is mainly referred to as the vision of perception. This visual system is meant to analyse and recognize shape and object etc. It is also known as What stream

Blindness:

Blindness is a defined as the lack of vision. Such type of vision loss can't be corrected either by contact lens or through glasses.

There are two type of blindness,

  • Temporary Blindness
  • Permanent Blindness

Temporary blindness is a condition where the vision of an individual vision is limited.

Permanent Blindness is a condition where an individual can't see anything even the light

8 0
3 years ago
What climate conditions occurs during el ninio
jeka94

Answer: El Niño is a part of a routine climate pattern that occurs when sea surface temperatures in the tropical Pacific Ocean rise to above-normal levels for an extended period of time.

<h2 />

<em>hope this helps !_!</em>

<h2><u>ENJOY groovie DAY</u></h2>
6 0
3 years ago
Read 2 more answers
Other questions:
  • All cells come from preexisting bones<br><br><br><br> true or false?
    11·2 answers
  • Each codon of a DNA molecule code is for a specific _
    13·1 answer
  • Which statement best describes the molecular structure of protein, along with one of the functions of proteins?
    9·2 answers
  • Joints that have bone ends held together by a joint capsule are structurally classified as ------- joints
    7·1 answer
  • To test how fertilizer affects tomato plants, a farmer divided a field of young tomato plants into 10 plots of equal size. The f
    11·1 answer
  • The synthesis (s) phase is characterized by
    7·1 answer
  • a cell has 10% salt solution and 90% water solution,while the beaker has 30% salt solution and 70% water solution. what happens
    5·1 answer
  • How many moles would there be in 100 g of glucose? In 500 g of glucose? SHOW WORK
    10·1 answer
  • Which statement best dear vibes the relationship between matter and energy during photosynthesis?
    13·1 answer
  • 3. How can freshwater ecosystems be impacted by global climate change?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!