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
liraira [26]
3 years ago
14

each chromosome originally is made of how many DNA molecules and how does this molecule appear in the chromosome

Biology
1 answer:
Kazeer [188]3 years ago
6 0

Answer:

each chromosome is composed of one coiled DNA double helix molecule, which is called a chromatid. At the end of this stage, each chromosome has two identical DNA double helix molecules, and therefore is composed of two sister chromatids

You might be interested in
1. What percentage of the weight of Earth's crust is made of silicon?
sladkih [1.3K]

Answer: 27.7 percent

Explanation:

7 0
3 years ago
Changing states of water requires energy, where does that energy come from?
I am Lyosha [343]

Answer:

Energy comes from different sources such as oil, coal the wind and the sun.

3 0
3 years ago
Read 2 more answers
Fats and steroids are examples of which macromolecules​
abruzzese [7]

Answer:

Types of biological macromolecules

Biological macromolecule Building blocks Examples

Lipids Fatty acids and glycerol Fats, phospholipids, waxes, oils, grease, steroids

Proteins Amino acids Keratin (found in hair and nails), hormones, enzymes, antibodies

Nucleic acids Nucleotides DNA, RNA

Explanation:

6 0
3 years ago
During which process is ethanol produced?
Kipish [7]

Answer:

Alcohol fermentation

Explanation:

When oxygen availability is low, the cell can't perform aerobic respiration to breakdown glucose. Instead, anaerobic respiration must be performed. This occurs in cells which consume large amounts of energy, such as muscle cells. Anaerobic respiration produces much less energy than aerobic respiration

One type of anaerobic respiration formed by yeast is called alcohol fermentation (also called ethanol fermentation). This begins with glycolysis, where one molecule of glucose is broke down into 2 molecules of pyruvate. The energy from this reaction generates 2 molecules of ATP, and converts NAD+ to NADH.

Then, the two molecules of pyruvate are further broke down into 2 acetaldehydes (releasing two molecules of carbon dioxide as a by-product). These two molecules of acetaldehyde are then converted into tw molecules of ethanol, using the H ions from NADH, converting it back to NAD+. See the attached picture

This process is taken advantage of to brew beer and wine.

3 0
3 years ago
Read 2 more answers
____________________ laundry trays do not provide a smooth, and sanitary surface, which is no longer permitted.
Alik [6]
The answer is concrete laundry trays.
This is because as concrete trays ages with timeit becomes coarse and rugged due to water, soap and detergents. Their smoothness gradually fades with time, thus this makes it not as good regarding to health wise standards of living.
5 0
3 years ago
Other questions:
  • Sugars such as glucose, fructose, and ribose are examples of ________________.
    5·2 answers
  • A Kitten was born with black fur and green eyes. The fur and eye color are shown in the chart (picture above).
    13·2 answers
  • This photo shows a plateau. Which events could have caused this plateau to form? Select the three correct answers.
    15·2 answers
  • Many endangered species of birds in Hawaii are in danger of contracting avian malaria from mosquito bites. Many of these bird sp
    8·1 answer
  • Which layer of the atmosphere do thunderstorms take place in?
    9·1 answer
  • To acquire iron as a critical nutrient, pathogenic bacteria _________. invade cells in order to access iron within degradative l
    14·1 answer
  • Is it possible for natural selection to create a new species? Explain your answer. *
    5·2 answers
  • Two atoms of uranium that differ in their numbers of neutrons are called
    14·1 answer
  • The antibiotic rifampicin blocks transcription in many bacteria. In the presence of the antibiotic, adding sigma factor has no s
    5·1 answer
  • What does the phrase, “When it pours, the desert stores” refer to?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!