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
kompoz [17]
3 years ago
13

What term defines varieties or populations of human beings distinguished by physical traits such as hair, eyes, skin color, and

body shape?
a. class
b. cohort
c. ethnicity
d. race
Biology
1 answer:
marishachu [46]3 years ago
6 0
The answer is D) Race. :D
You might be interested in
You are researching a cytoplasmic protein associated with a nerve disorder. The native form of the enzyme appears to be globular
kherson [118]

Answer:

This signifies that the protein primarily comprises multiple polypeptide chains connected together with the help of disulfide bonds. The enzymes may be found in the form of dimers, trimers, or tetramers. Various examples of dimers, trimers, and tetramer proteins are known, of them, NEMOs dimers are considered to be held by disulfide bonds.  

Thus, it can be hypothesized that the enzyme under examination is a multimer held in combination by disulfide bonds, with each comprising catalytic sites. On breaking of disulfide bonds, the enzyme dissociates into its many single units.  

This illustrates the reduction in catalytic activity. Each active site in a single unit will work, however, at a gradual rate. This also shows detection of multiple globular proteins after disulfide reduction.  

8 0
3 years ago
Why does an octopus or squid use its tentacles?
spin [16.1K]
Octopus and squid have little suction cups on their tentacles. It helps with sticking onto food (so it doesn't get away) and also helps with sticking into things. If it wanted to camouflage into some rocks, it can use its tentacles to cling to to the rock.

Tentacles can also grab and carry things. Scientists have made tests where they would put a clam in a jar with the lid screwed on. The octopus would grab onto the jar and use its tentacles to twist the lid off.

Without tentacles, octopuses and squids would be pretty helpless and probably couldn't survive in the deep ocean.
8 0
3 years ago
Read 2 more answers
What is an engineer goal and what does he or she need to meet that goal?
vampirchik [111]
HI i was wondering 1 what engineer choice you are going for and two if this is what you mean. study hard to to bed early and make class . (im saying this becasue i have done it before :])

4 0
3 years ago
Based on the cladogram, which of these organisms are the most closely related?
Drupady [299]
According to the cladogram, arthropods are MOST closely related to which group of organisms? mollusks. annelids. echinoderms.
7 0
3 years ago
How might a substrate of the citric acid cycle block respiration when it is present in great excess
murzikaleks [220]
The substrate of the citric acid cycle which can block respiration when it is present in excess is MALONATE. Malonate inhibits respiration by competing with succinate dehydrogenase for its acitve site. Malonate binds to the active site without reacting, thus competing with succinate. This disrupts the cellular respiration in the cell.
4 0
3 years ago
Other questions:
  • Plz help im giving a brainliest to the first person to answe​r
    9·1 answer
  • Consider the cross between two different pea plants with the following genotypes: PpTt x Pptt
    15·1 answer
  • Name each numbered stage in the plant cell cycle diagram:
    9·1 answer
  • The life cycle of a white wagtail
    13·1 answer
  • Which particular function of nerve cells is facilitated by the unique shape of the cell?
    13·2 answers
  • Define tissue and explain where it falls in the hierarchy of structural organization
    6·1 answer
  • 1. Which one lived in Antarctica earlier , the the labyrinthodont, the lystrosaurus, or the duck-billed dinosaur? Explain.
    15·2 answers
  • 900.j of work are done by a light bulb in 15.0 s. What is the power of the light bulb?
    15·1 answer
  • Look at the model at right. On the lines provided, name the parts that are missing.
    10·2 answers
  • Which organelles must work together to provide food and energy to a plant cell?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!