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
Jobisdone [24]
3 years ago
12

A person with blood type O would ________.

Biology
1 answer:
Karolina [17]3 years ago
7 0

Answer:

A. lack both antigens A and B on their erythrocytes.

Explanation:

A person with blood type O would lack both antigens A and B on their erythrocytes.

You might be interested in
essential amino acids cannot be produced by the body so they must come from our diet. we can get them from eating foods that con
jeyben [28]
We can get amino acids from eating food that contain proteins.


Proteins are made up of chains of amino acids. During digestion, the proteins are broken down into amino acids.
7 0
4 years ago
Read 2 more answers
Many essential nutrients are transported into plant cells through cotransport with H*, which flows back into the
PIT_PIT [208]

Answer:

C

Explanation:

The proton pump must continuously work against the concentration graident to maintain the electrochemical gradient. If this stops, the ions will flow down their concentration gradients, depolarizing the electrochemical gradient.

5 0
3 years ago
Describe how water is recycled from the atmosphere back to the root​
Andrej [43]

Answer:

Explanation:

when the water is in the atmoshere clouds will create and when it falls it rains over plants and etc so it goes into the roots of plants.

8 0
3 years ago
When the ranges of two different species meet, a stable "hybrid zone" occupied by hybrid individuals may form. How is this possi
Valentin [98]

Answer:

Two diverged populations are capable of mating and producing viable and fertile offspring.

Explanation:

Although the biological concept of species says that two different species can not mate and produce viable fertile descendants, the hybrid zones are characterized for being an area where two different genetically groups meet and reproduce. These groups might be the same or different species.

This is a frequent phenomenon in nature, and widely common geographically and among taxonomic groups. It is not rear that different sympatric populations, with a short time of divergence and similar reproductive strategies, can hybridize and even generate new populations that get reproductively isolated from their parentals.

When talking about sympatry we refer to two similar species that coincide in part or their whole distribution area.  

These new populations are even morphologically different from the parental forms, which allow them to colonize new habitats and niches, promoting diversification.

Hibridation zones are very important to conserve, just because they are points of genetic diversity generation and diversification areas.

4 0
3 years ago
Why are so many starch grains found in the cortex?
rosijanka [135]

There are many grains of starch in the cortex because it represents the reserve food material of plants.

This source of food material is consumed during plant metabolism, as food when plants are under stress, or as an energy source in seed germination and early seedling stages.

The cortex, in plants, is a vascular tissue responsible for the transport of food (processed sap) from the leaves to the rest of the plant .

Starch grains are the most common solid particles that plant cells develop within plastids.

Assimilation starch is a temporary product of photosynthesis and is formed in chloroplasts, while reserve starch is formed in amyloplasts, which are contained in parenchymal cells of the cortex, in vascular tissues of stems and roots, in the pith of stems, in fruits, leaves, fleshy cotyledons and in modified stems, such as tubers and rhizomes.

Starch is the main energy and carbon reserve in plants, supplying the energy and carbon skeletons necessary for the plant's metabolism during periods of darkness, when photosynthesis is inactive.

Therefore, we can conclude that starch grains (ergasstic substances) are found in abundance in the cortex because it represents a reserve of essential molecules for the functioning and maintenance of the cellular structure.

Learn more here: brainly.com/question/18303563

4 0
3 years ago
Other questions:
  • The graph below shows the light absorbance of two kinds of chlorophyll. mc007-1.jpg Which color of light does chlorophyll b abso
    5·1 answer
  • Identify three organ systems that work together to achieve a successful pregnancy
    12·1 answer
  • Viruses, bacteria, fungi, and parasites are all different types of infectious agents that may cause disease. What do these agent
    15·2 answers
  • What were the two experiments that helped disprove spontaneous generation?
    8·1 answer
  • What does Earth's rotation on its axis cause?
    8·2 answers
  • Why is coal considered a nonrenewable energy source
    7·2 answers
  • in a strike-slip fault, the rocks on either side of the fault slip past each other sideways with little a. noise. b. shaking. c.
    9·2 answers
  • What gas dominated earth’s first atmosphere?
    8·1 answer
  • Listen as I read 12 nitrogenous bases to you. Record the letter of the base (A for adenine, T for thymine, C for
    15·1 answer
  • in its second messenger role, cAMP activates enzymes called ____________, whose jobs is to regulate other enzymes by adding phos
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!