answer.
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
kakasveta [241]
2 years ago
10

Which of the following is the best definition of chromosome?

Biology
2 answers:
natita [175]2 years ago
4 0
The answer is either a or c
Sloan [31]2 years ago
3 0

Answer:

The correct answer will be option C.

Explanation:

Chromosome is a packaged structure of DNA observed in the cell nucleus during metaphase stage of cell division when aligned in the equatorial plate of the cell.

Chromosomes number varies in different species which facilitates replication and distribution of the DNA to new daughter cells during cell division.

Chromosome is formed after coiling of DNA many times around proteins called histones which provides the structural support to DNA and form a special structure nucleosomes,  further coil up and create chromatin loops which further coil around each other and make a full chromosome.  

Thus, option C is the correct answer.

You might be interested in
_____ is secreted by the _____ and acts to emulsify _____ in the lumen of the _____. _____ is secreted by the _____ and acts to
VARVARA [1.3K]

The liver plays an important role in the food digestion. The liver secretes bile juice which helps in the digestion of the fats. In the absence of digestion, this bile is stored in the gall bladder. The bile juice is the yellowish fluid, which aids in the digestion of fats (occurring in the small intestine) by emulsifying the fats molecules. the emulsification of these fat molecules is critical for their digestion, and absorption. Hence,  the liver secretes bile juice and acts to emulsify the fat in the lumen of the small intestine.

4 0
2 years ago
Read 2 more answers
Hank Greene, an airline pilot, is having difficulty with the sleep-wakefulness portions of his circadian cycle. The pineal gland
d1i1m1o1n [39]

Answer:

Melatonin

Explanation:

  • Melatonin is the hormone that is produced by the pineal gland in response to the dark and light cycle.
  • The pineal gland is turned on when there is darkness and turned off when there is light.
  • When it's dark, the pineal gland becomes active and produces melatonin leading to an increase in the melatonin levels in the blood and a person starts to feel more sleepy and the levels of melatonin remain in the blood for about 12 hours after which they fall and the state of wakefulness occurs.
  • The levels of melatonin fall sharply in the presence of bright light.
  • Thus, the melatonin hormone is responsible for controlling the sleep-wake cycle.
7 0
2 years ago
Describe how C. parvum obtains the glucose it needs for glycolysis after it has infected another cell. Explain the role of lacta
ch4aika [34]

Answer:

C. parvum takes energy from glucose which is present in the digestive tract after the process of glycolysis.

Lactate dehydrogenase which is responsible for the conversion of lactate into pyruvate molecule.

Explanation:

C. parvum is a protozoa that lives as a parasite in the digestive tract of animals. They take nutrients from the cell which are present in the form of glucose. C. parvum uses a specific type of enzyme i. e. lactate dehydrogenase which is responsible for the conversion of lactate into pyruvate and also helps in the production of ATP through glycolysis process. In this process, the glucose molecule is broken down into two molecules of pyruvate, two molecules of ATP, two molecules of NADH, and two molecules of water. So C. parvum takes ATP from that way from the host cells.

3 0
2 years ago
A Xw+m+Xwm female was mated to a XwmY male. Out of 1000 total F1 progeny there were 230 flies that were otherwise wild type with
deff fn [24]
In order to calculate the distance between two alleles/genes that are found in the same chromosome, we need to know how often crossing-over happened (recombination frequency). We know from the text that white eyes were linked to miniature wings and that wild type eyes were linked to wild type wings, so any phenotype that's contrary to these parent combinations are a result of crossing-over. We know then that 230 flies + 240 flies were a result of such recombination. To calculate the recombination frequency we only need to divide these flies (total of recombinant flies) by the total of flies in the offspring and turn it into percentage.
\frac{230+240}{1000}=0.47
0.47*100%=47%
47 map units is the distance between the genes <span>for eye color and wing length.</span>
7 0
2 years ago
A researcher investigates a blood disease carried by birds. She isolates an organism from the blood of an infected bird. She fin
Airida [17]

Note each of them:

Archaea is a single-celled microorganism with no nucleus

Bacteria is a unicellular microorganism with cell walls but lack organelles

Sarcodina is a phylum with temporary extensions of the cell. They can be parasitic.

Protista is an eukaryotic organisms that is not an animal, plant, or fungus.

The organism found is unicellular (rules out Archaea), with cell walls (characteristics of bacteria), and the ability to produce spores.

I believe that Bacteria (B) is your best answer

hope this helps

4 0
2 years ago
Read 2 more answers
Other questions:
  • How do small intestinal epithelial and root hair cells function in nutrient procurement?
    15·1 answer
  • 11) A patient has had a serious accident and lost a lot of blood. In an attempt to replenish body fluids, distilled water, equal
    9·1 answer
  • The range of cells receiving copied content is called the ____ area. select one:
    13·1 answer
  • What commonly ingested substances are absorbed through the stomach wall?
    11·1 answer
  • The original population of brown spotted deer declined drastically after their forest habitat was flooded. After frantic efforts
    5·1 answer
  • 4) Empress Si-Ling Chi observed _________ in her garden.
    7·1 answer
  • How is loess beneficial? It grows healthy crops. It prevents wind erosion. It protects land from waves. It decreases the slope o
    11·2 answers
  • Which term describes fermentable oligosaccharides, disaccharides, monosaccharides, and polyols that are commonly found in wheat,
    11·1 answer
  • if an earthworm eats enough matter that it consumes 100 grams of nitrogen in its lifespan, how much nitrogen did it release into
    12·1 answer
  • A) Kushal is training for a 400 m race. He ran five practice races so far. The time taken by him to complete each race (in secon
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!