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
Mars2501 [29]
3 years ago
12

Which of the following is true of valves in veins?

Biology
1 answer:
MAVERICK [17]3 years ago
8 0

Answer:

A

Explanation:

they are associated with venous sinuses.this valve open one way flow of direction of the heart.

You might be interested in
Match the following chemicals with their descriptions.
maria [59]

<span>Correct matches: chemicals with their descriptions. 
1. abscisic acid ( is the hormone that regulates survival functions of a plant, such as the opening and closing of stomata) 
2.  auxins (chemicals produced in plants that are characterized by their ability to induce cell elongation and cell division in stems) 
3.  cytokinins  (chemicals that helps plant cells divide)</span>

<span>4.  ethylene (a hormone that promotes ripening of fruit or blooming of flowers) </span>

<span>5.  gibberellins (chemicals produced by plants that stimulate stem elongation, seed germination, and flowering) </span>

4 0
3 years ago
Read 2 more answers
if a virus enters my body will it enter and leave alone or will it enter and infect cells please i need help
pishuonlain [190]

Answer:

Virus are a type of infectious agents it in almost all scenarios it will infect as many as cells it can before your WBC's can kill them

And in fact you are right now only in the state of Disease free. Every second your body is fighting off diseases. So to support your immune system eat Lots of Healthy food and stay safe!

4 0
2 years ago
Read 2 more answers
What charactorizes an iconic bond
Mekhanik [1.2K]

Chemical bonds formed when atoms gain/lose electrons, and oppositely charged ions attract. Ion. A particle having an electrical charge. Electronegativity difference between 0 and 0.3. Characterizes onpolar covalent bond.

8 0
3 years ago
How many cellular divisions take place during meiosis?
In-s [12.5K]

Answer:

4

Explanation:

One division into the p1 generation, and then the p1 generation makes the p2 generation, making it 4 cellular divisions.

3 0
2 years ago
Read 2 more answers
Different between pressure <br>and upthrust​
solniwko [45]

Answer:

pressure is force per unit area where uptrust is a force on upper surface

7 0
3 years ago
Other questions:
  • A failure of the red-sensitive nerves in the eye to respond to light properly causes
    13·1 answer
  • Select all that apply. Which of the following were developed during World War II?
    9·2 answers
  • Glaucoma is a leading cause of blindness. Studies have linked a common form of glaucoma to three genes and more than 20 genetic
    15·2 answers
  • Which of the following factors is needed during light-dependent reactions to create ATP and NADPH energy molecules?
    6·2 answers
  • What trait does a gecko and a palm tree share?
    14·1 answer
  • Two students were testing the amount of fertilizer that would best promote the growth of strawberries in a garden. Which of the
    11·1 answer
  • What would happen if a replicated chromosome failed to correctly attach to the mitotic spindle?
    14·1 answer
  • What are the 2 most abundant elements found in the Earth's crust?
    6·1 answer
  • In a forest ecosystem, wolves hunt and eat deer. What would happen to the ecosystem if a large number of wolves were hunted and
    11·2 answers
  • Adults of species in the order ___ have 2 wings and the greatest variety of mouthparts. Group of answer choices Isoptera Coleopt
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!