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
Debora [2.8K]
3 years ago
14

In 2000, Bob Harmon discovered the best-preserved Tyrannosaurus Rex skeleton ever found. The fossilized dinosaur was sticking ou

t of the wall of a canyon in Montana. Many scientists were eager to study the fossils. Dr. Mary Schweitzer got one of the leg bones to analyze. Dr. Schweitzer's assistant dissolved the bones in acid and discovered that some soft tissue had survived even after 68 million years. The discovery was a shock to the scientific community. No one had ever found such old tissues. Dr. Schweitzer found structures identical to modern red blood cells and blood vessels inside the bone.
Which organ system do blood cells and blood vessels belong to?


A.circulatory system

B.nervous system

C.skeletal system

D.respiratory system
Biology
1 answer:
irakobra [83]3 years ago
3 0
A, the circulatory system
You might be interested in
Create some GREAT SCIENTIFIC game of FREEZE TAG to play in class.
anygoal [31]
You should have two different teams that represents scientific ideas as the name of the teams and have them play like that
5 0
2 years ago
Read 2 more answers
Please help stuck on part c
tangare [24]
Mitochondria is the power house of the cell (also pay attention in class)
6 0
3 years ago
13. Write a flow chart for Aerobic respiration starting from Glucose to
Nata [24]

Answer:

<em>Aerobic respiration occurs in the steps:</em>

Glycolysis--> respiration-->  ETC

<em>(see images for flow chart)</em>

<em />

Explanation:

The mitochondria inside the cell's cytoplasm is an organelle. It consists of a gel-like material comprising an outer membrane, an inner membrane, and a matrix. In mitochondria, cells break down sugars in the form of glucose during aerobic respiration, in the presence of oxygen...

This occurs via glycolysis, the Kreb's cyle, and the electron transport chain (ETC)

C6H12O6 (glucose) + 6 O2 → 6 CO2 + 6 H2O + ≅38 ATP

   glucose + oxygen            →  carbon dioxide+ water+ energy

5 0
3 years ago
If you cut a flatworm in half, both halves can grow into a new individual by _____.
den301095 [7]

If you cut a flatworm in half, both halves can grow into a new individual by fission.

8 0
3 years ago
Read 2 more answers
Cell drinking; cell eating. Both are examples of
OlgaM077 [116]
Cell drinking : pinocytosis
cell eating :phagocytsis
8 0
3 years ago
Other questions:
  • Because enzymes have high specificity, fewer than fifteen are required by any organism.
    9·1 answer
  • DNA contains all of the genetic information for a cell and is often called?
    13·2 answers
  • he island of Madagascar is located just off the SE coast of Africa, in the Indian Ocean. Scientists find species on this island
    13·1 answer
  • According to the gel electrophoresis results, which child is most likely the
    9·1 answer
  • Describe three of Darwin's observations about animals in south America and on the galapagos islands.
    13·1 answer
  • What would be the amino acids that each tRNA would bring in?
    9·1 answer
  • Which event takes place first in the stages before the birth of a star? Gravity pulls gas and dust together. A protostar forms a
    14·2 answers
  • Why is cellular respiration called an aerobic process?
    8·2 answers
  • Suppose the great, green galoofus lizard has 28 chromosomes in the nucleus of its unfertilized eggs. Predict how many chromosome
    11·1 answer
  • (Help me pls)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!