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
slavikrds [6]
2 years ago
15

Dr. Schweitzer found structures identical to modern red blood cells and blood vessels inside the bone. Which organ system do blo

od cells and blood vessels belong to? A. circulatory system B. nervous system C. respiratory system D. skeletal system ​
Biology
1 answer:
Marizza181 [45]2 years ago
4 0

Answer:

A. Circulatory system

Explanation:

Circulatory system consist of heart,blood cells&blood vessels

You might be interested in
Why does the reduction of the dye DCPIP work best using the chloroplasts whose outer envelopes have been damaged during preparat
Stolb23 [73]

Answer:

NADP is the cofactors in photosynthesis which loses electrons,becomes reduced(NADPH) in photosynthesis. It transfer  electrons  in reduced form(NADPH) into the stroma of the chloroplast. The H is splits into e- and H+

These electrons for the ETC chains, generates the PMF for pumping H+ as protrons into the thylakoid  intramembranes.

Outer membrane covers  the intramembrane space, between these two membranes layers. The protons in the intramembrane space generate the electrochemical gradient for the supply of  the energy used by ATPase synthase for ATP synthesis from phosphorylation with ADP.

The chloroplast is made up of both the outer and inner membrane,separated by the intramembrane space. The walls of the intramembrane space is guided by the outer envelope. 

Therefore with the outer envelope removed, the intramembrane is exposed,more protons(H+) are released, but can not be held in the outer envelope to form electrochemical gradients,beacause the intramembrane space is now permable.

Thus   the rate of reduction of DCPIP is faster.The  color changes to colorless increases when reduced , from blue color.

Explanation:

7 0
3 years ago
Which of the following locations would probably have the highest humidity?
snow_tiger [21]

Answer:

California

Explanation:

odyssey ware

7 0
3 years ago
Which of the following is NOT a part of a DNA molecule?
almond37 [142]

Answer:

Explanation:

a sugar, a phosphate group, and a nitrogenous base.

6 0
3 years ago
Read 2 more answers
Can u help me with this please
sesenic [268]
This is only explanation. What are the questions for it?
7 0
3 years ago
What were some recent events where scientific facts were changing??
kiruha [24]

The recent events where scientific facts were changing our new discoveries on the moon and the new species of early humans have been discovered.

<h3>What are scientific facts?</h3>

Scientific facts are those facts that are based on scientific theories and experiments. These facts are true, and they came from organized and systematic knowledge.

Scientific facts were always changing s new discoveries happen. Scientist discovers new things every day.

Thus, the recent events are new discoveries on the moon, flying, and land in the martian area. A new species of early humans have been discovered.

To learn more about scientific facts, refer to the link:

brainly.com/question/23206660

#SPJ1

6 0
2 years ago
Other questions:
  • can you predict the properties of a compound by knowing the properties of the elements that make up the compound?
    15·1 answer
  • An example of an epigenetic change is
    7·1 answer
  • What did DNA analysis reveal about giant pandas and bears?
    14·1 answer
  • 2. The mass of the nucleus is closest to A. 99% of that in the entire atom B. 1% of that in the atom C. 10–5 of that in the atom
    10·1 answer
  • I need help please
    13·2 answers
  • Which is a source of adult stem cells?<br> bone marrow<br> amniotic fluid<br> embryos<br> gametes
    15·1 answer
  • What beak shape do you think will be best for finding food in a period of abundant rainfall?
    9·1 answer
  • Hii! i’ll give brainliest pls help
    10·2 answers
  • I need complete sentences pls
    15·1 answer
  • Osmosis is a form of _________ that involves the movement of​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!