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
hram777 [196]
3 years ago
7

Starting from a single individual, what is the size of a population of bacteria that reproduce by binary fission every 20 minute

s at the end of a 2-hour time period? (Assume unlimited resources and no mortality.)
A) 6
B) 18
C) 128
D) 512
E) 1,024
Biology
1 answer:
masya89 [10]3 years ago
6 0

Answer:

 C) 128

Explanation:

In binary fission each bacterial cell will divide into two parts.

1. Since the bacteria divides divides after every 20 min , We have to find the number of division in two hours two hour(2x60=120 min) which will be;

120÷20=6

It will undergo 6 divisions.

2. To calculate the number of bacteria at the end of 2 hours

Bacteria in the beginning x 2∧ Number of division

1× 2∧6= 128 Bacteria  

You might be interested in
Many scientists are begging for governments and people to create sanctuaries
EastWind [94]

Answer:

because by overfishing we can destabilize the oceanic environment

6 0
3 years ago
Which best describes oogenesis and spermatogenesis?
pochemuha
The answer is <span>B. In both oogenesis and spermatogenesis, the cells become haploid after meiosis I.

Gametogenesis is a process in which gametes are produced. Oogenesis is a process in which egg cells are produced and spermatogenesis is a process in which sperm cells are produced. Both processes include meiosis.
Original diploid cell (primary oocyte or spermatogonium) has 46 chromosomes. After meiosis I, there are two haploid cells. After meiosis II, there are 4 haploid cells because meiosis II is similar to mitosis. The difference between spermatogenesis and oogenesis is that those 4 cells after meiosis II in spermatogenesis are all sperm cells, and in oogenesis only one of them is egg cell.</span>
5 0
3 years ago
Read 2 more answers
Greenhouse gases are measured by their ability to trap outgoing solar radiation and convert it to heat, warming the atmosphere.
Gnom [1K]

Answer:

Greenhouse gases, such as carbon dioxide, methane, nitrous oxide, and certain synthetic chemicals, trap some of the Earth's outgoing energy, thus retaining heat in the atmosphere. This heat trapping causes changes in the radiative balance of the Earth—the balance between energy received from the sun and emitted from Earth—that alter climate and weather patterns at global and regional scales.

Multiple lines of evidence confirm that human activities are the primary cause of the global warming of the past 50 years.1 Natural factors, such as variations in the sun's output, volcanic activity, the Earth's orbit, the carbon cycle, and others, also affect Earth's radiative balance. However, beginning in the late 1700s, the net global effect of human activities has been a continual increase in greenhouse gas concentrations.

This change in concentrations causes warming and is affecting various aspects of climate, including surface air and ocean temperatures, precipitation, and sea levels. Human health, agriculture, water resources, forests, wildlife, and coastal areas are all vulnerable to climate change.

Many greenhouse gases are extremely long-lived in the atmosphere, with some remaining airborne for tens to hundreds of years after being released. These long-lived greenhouse gases become globally mixed in the atmosphere and their concentrations reflect past and recent contributions from emissions sources worldwide. Others, like tropospheric ozone, have a relatively short lifetime in the atmosphere.

Explanation:

Brainliest please?

6 0
3 years ago
Why would we give moral consideration to infants but not animals??
irakobra [83]
I don't know, maybe because of the way we see animals. Not as our equal parts 
3 0
3 years ago
NEED HELP ASAP!!!!!!!!!!!
ipn [44]
Water is the most abundant molecule in the Earth’s atmosphere is false.
8 0
3 years ago
Other questions:
  • The principle of _____ suggests that a gene pair separates during gamete formation?
    11·2 answers
  • Which non-specific defense mechanism is mismatched with its associated body structure or body fluid? which non-specific defense
    15·1 answer
  • Explain why hair is a derived character for clade mammalia but having four limbs is not. for which clade is four limbs a derived
    6·1 answer
  • A molecule that moves across a cell membrane without using the cell’s energy tends to move A. away from the area of equilibrium.
    13·1 answer
  • What kind of tide does the observer experience when he is between tidal bulges?
    14·1 answer
  • Innate immunity and acquired immunity are both _____. see concept 43.1
    10·1 answer
  • What is 23 the three is suppose too be small
    5·2 answers
  • How are cellular respiration and photosynthesis mutually dependent
    9·1 answer
  • Can someone fill this in for me (it doesn’t have to be accurate)
    13·1 answer
  • Help me please help ​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!