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
notsponge [240]
2 years ago
11

The ABO blood group is a classification of blood depending on the presence of how many antigens?

Biology
1 answer:
Inessa [10]2 years ago
7 0

Answer:

a. two

Explanation:

You might be interested in
Which of the following organisms is made of the most complex
shepuryov [24]

Answer: A. Plant

Explanation:

Plants have some of the most of complex cells of living organisms because they have different roles and structures to enable the plant to survive.

These include cells like the Parenchyma, Collenchyma, Sclerenchyma, Xylem and Phloem cells. Xylem cells for instance are complex cells located within the vascular tissues of plants and help transport water and minerals to the rest of the plant from the roots. Xylem cells look long and tracheal which is to enable them carry out the aforementioned roles.  

8 0
2 years ago
I wanna know all the answers for this questions , thank you also (eighth grade) so make it simple ​
den301095 [7]

Answer:

hello will. you be my frnd

4 0
2 years ago
Temperature is read by measuring the liquid in the thermometer using the scale on the thermometer. When the temperature rises, t
anastassius [24]
When temp rises the liquid rises to temp and when temp drops liquid drops to temp
4 0
3 years ago
Read 2 more answers
1. which pairing matches the structures shown in the cell diagrams with th
Mademuasel [1]

Explanation:

D. E: photosynthesis; D: cellular respiration

Photosynthesis is a chemical pathway that’s integral to producing energy in plants and other primary producers. Energy in the form of molecules of glucose is produced from light, water and carbon dioxide while oxygen is released. This occurs in several complex steps, photosynthesis is a rate limited reaction, depends on several factors including carbon dioxide concentration, ambient temperature and light intensity; the energy is retrieved from photons, I.e. particles of light, and water is used as a reducing agent.

In the light reactions, occuring within the thykaloid, and stroma of the chloroplasts, water supplies the pigment chlorophyll with replacement electrons for the ones removed from photosystem II. Additionally, water (H2O) split by light during photolysis into H+ and OH- acts as a source of oxygen along with functioning as a reducing agent; it reduces the molecule NADP to NADPH by providing H+ ions. NADP and NADPH are integral to the dark reactions, or Calvin cycle where monosaccharides or sugars like glucose are produced after the modification of several molecules.

Respiration in the mitochondria utilizes oxygen for the production of ATP in the Krebs’s cycle via the oxidization of pyruvate (through the process of glycoysis). The electron transport chain, in which oxygen functions as the terminal electron acceptor, occurs in both plants and animals. Respiration includes:

  • Glycolysis: occurs in the cytoplasm 2 molecules of ATP are used to cleave glucose into 2 pyruvates, 4 ATP and 2 electron carrying NADH molecules.
  • The Kreb's cycle: in the mitochondrial matrix- 6 molecules of CO2 are produced by combining oxygen and the carbon within pyruvate, 2 ATP oxygen molecules, 8 NADH and 2 FADH2.
  • The electron transport chain, ETC: in the inner mitochondrial membrane, 34 ATP, electrons combine with H+ split from 10 NADH, 4 FADH2, renewing the number of electron acceptors and 3 oxygen; this forms 6 H2O, 10 NAD+, 4 FAD.

Learn more about cellular respiration at brainly.com/question/11203046

Learn more about Photosynthesis at brainly.com/question/4216541

Learn more about cellular life at brainly.com/question/11259903

#LearnWithBrainly

6 0
3 years ago
The smallest, most specific classification level is
arlik [135]
A species is the smallest CLASSIFICATION level, then genus, family, order, class, phylum, and kingdom. Kingdoms are the most generalized and basic.
3 0
3 years ago
Read 2 more answers
Other questions:
  • The difference between osmosis and diffusion is that osmosis is the spreading of water from a high to low concentration while di
    15·2 answers
  • Which of the following distinguishes a prokaryotic cell from a eukaryotic cell?. . A. the presence of a nucleus. B. the presence
    6·1 answer
  • How does exercise benefit the cardiovascular system
    11·1 answer
  • medical assistants to ensure the personal and physical safety of stroke and seizure patients during an office visit.
    11·1 answer
  • In what ways are cellulose and starch similar to each other and in what ways are they different? Be specific in your comparison,
    7·1 answer
  • Resistance to antibiotics results from variations in the genetic code of streptococcus pneumoniae. Which type of molecule encode
    10·1 answer
  • Describe three actions caused by the force of water that help drive the rock cycle.
    13·1 answer
  • These wolves are known to not immigrate or migrate. If local biologists note that the population size is constant, what could be
    13·1 answer
  • Which part of the plant releases energy from food
    14·2 answers
  • If the chloroplasts of a plant cell are damage, which will it be unable to do?​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!