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
ivanzaharov [21]
3 years ago
15

9. On an ECG reading of one cardiac cycle, the depolarization of the main mass of the ventricles is represented by the _______ w

ave.
A) Q
B) T
C) R
D) P
Biology
2 answers:
Tpy6a [65]3 years ago
6 0
I think the answer is p wave on the penn foster test
yulyashka [42]3 years ago
5 0

R waves correspond to depolarization of the main mass of the ventricles so it’s the largest wave (pg 358 in the third edition of Colville and Bassert Clinical Anatony and Physiology for Veterinary Technicians)

The answer is C) R

You might be interested in
Describe the matrix of bone tissue in intramembranous ossification and endochondral ossification
sattari [20]

Answer:

In intravenous ossification, bone develops directly from sheets of mesenchymal connective tissue. In endochondral ossification, bone develops by replacing hyaline cartilage. Activity in the epiphyseal plate enables bones to grow in length. Modeling allows bones to grow in diameter.

Explanation:

8 0
3 years ago
Which of the following is not an example of active transport? I. Facilitated diffusion II. Osmosis III. Diffusion
klasskru [66]
I. Facilitated diffusion is your answer. 
Active transport <span>is the movement of molecules across a cell membrane into a region of higher concentration, this process requires energy. Both osmosis and diffusion are passive transportations which means that they don't require energy.
Hope this helps!
</span>
6 0
3 years ago
Describe why seed dormancy is a valuable adaptation that has helped explain the evolutionary success of seed plants
ycow [4]

Seed dormancy allows for a seed to germinate only when the conditions are right to support the germination and growth of the plant. This adaptation, therefore, increases the chances of survival for the plant. Natural selection, which powers evolution, will always favor desirable traits which will be entrenched in a population through successive generations.

8 0
3 years ago
Which chemical bond most likely stores the most energy?
Genrish500 [490]
The answer is A- double carbon bond
3 0
3 years ago
For a folding domain that forms a sort of "fist" with certain amino acid R groups buried within and other R groups facing out, t
Alina [70]

Answer:

False

Explanation:

  • The proteins whose R groups ionize at different pHs to obtain either a positive or negative charge are hydrophilic and due to this, they are attracted to the water molecules.
  • The R groups of hydrophilic proteins contain either acidic or basic amino acids.
  • The hydrophobic proteins are repelled by water and their R group consists of nonpolar amino acids.
  • When the proteins form a fist like structure, their hydrophobic R groups are hidden inside the fist whereas the hydrophilic R groups face out as it allows the hydrophilic groups to interact with the water molecules in the environment and thus, the protein obtains a stable structure.
8 0
3 years ago
Other questions:
  • Compare and contrast properties of sister chromatids and homologous chromosomes.
    13·2 answers
  • What agricultural practice encourages pest resistance?
    7·1 answer
  • How to answer this question in English?
    14·2 answers
  • Another name for the cell membrane is?
    13·2 answers
  • ______ act as a barrier to invading cells and viruses. muscle cells connective tissue epithelial cells none of the above
    10·1 answer
  • Child level explanation for what the cell membrane does for the cell
    7·1 answer
  • What are the three stages of aerobic cellular respiration?
    11·2 answers
  • In 1939, the use of DDT (a powerful synthetic chemical) as an insecticide was discovered. The United States adopted its widespre
    5·2 answers
  • Importance of platyhelminthesis​
    11·1 answer
  • The San Andreas fault is a transform fault. The map below shows a student's approximation of where the fault line crosses throug
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!