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
kiruha [24]
2 years ago
12

Look at picture I need help

Biology
1 answer:
Mariulka [41]2 years ago
3 0

Answer:

letter D four with purple flowers

Explanation:

You might be interested in
The Earth rotates counterclockwise on its axis. Because of this, in which direction does the Moon appear to move across the sky?
kicyunya [14]

Answer:

East To West

Explanation:

4 0
3 years ago
A researcher is trying to construct a molecular-based phylogeny of the entire animal kingdom. Assuming that none of the followin
densk [106]

Answer:

Option (B) is the correct answer of the following question.

Explanation:

Collagens are a family of enzymes that perpetuate and protect many of the body's tissues, with the exception of connective tissue, femur, fibula, pigmentation, and the caucasian eye (optic disc). It would be the best choice on which to base the phylogeny.

  • The first and most concentrated substance in the body is the collagen genes.
  • It is a large, indigestible cellular muscle which maintains organisms and gives internal cells a texture.
  • Collagen is also an essential part of the crisscrossing membrane neurons.

Other options are incorrect because they are not related to the given scenario.

3 0
3 years ago
Read 2 more answers
When do plants use oxygen<br>​
irina1246 [14]

Answer:

When there is no sunlight and they undergo cellular respiration

Explanation:

Plants respire to get energy like animals. In this chemical process, glucose food breaks down in the presence of oxygen to form carbon dioxide and water with the release of energy. See the diagram below

I hope this helps!

8 0
2 years ago
During the cross-bridge cycle in muscle cells, myosin motors hydrolyze ATP as fuel to create a pulling force on actin fibers. Pl
exis [7]

Answer and Explanation:

In rest, attraction strengths between myosin and actin filaments are inhibited by the tropomyosin. When the muscle fiber membrane depolarizes, the action potential caused by this depolarization enters the t-tubules depolarizing the inner portion of the muscle fiber. This activates calcium channels in the T tubules membrane and releases calcium into the sarcolemma. At this point, tropomyosin is obstructing binding sites for myosin on the thin filament. When calcium binds to the troponin C, the troponin T alters the tropomyosin by moving it and then unblocks the binding sites. Myosin heads bind to the uncovered actin-binding sites forming cross-bridges, and while doing it ATP is transformed into ADP and inorganic phosphate which is released. Myofilaments slide impulsed by chemical energy collected in myosin heads, producing a power stroke. The power stroke initiates when the myosin cross-bridge binds to actin. As they slide, ADP molecules are released. A new ATP links to myosin heads and breaks the bindings to the actin filament.  Then ATP splits into ADP and phosphate, and the energy produced is accumulated in the myosin heads, which starts a new binding cycle to actin.  Z-bands are then pulled toward each other, thus shortening the sarcomere and the I-band, and producing muscle fiber contraction.

7 0
3 years ago
Which timeline shows the correct order of contributions made to the discovery of DNA?
Anna11 [10]

Answer:

The correct answer is B.

Explanation:

DNA was discovered in 1800, and then scientists studied DNA with X-Rays. After a while, scientists published a 3D model of DNA, and shortly after, scientists decoded DNA genes. So the answer is Option B.

Hopefully, this helps! :D

Ask your question below!

7 0
2 years ago
Read 2 more answers
Other questions:
  • The management structures of both police agencies and correctional facilities are similar in that both have:
    6·1 answer
  • Which of the following relationships is incorrect
    10·2 answers
  • Gene genealogies can vary for different loci. What does this imply for species trees? Group of answer choices
    9·1 answer
  • Upon examining a crime scene, Investigator Hall finds a few strands of hair with a relatively large amount of follicular tissue
    5·1 answer
  • What is the name of this commonly used scientific tool?
    13·2 answers
  • You transformed bacteria with varies plasmids and counted the colonies as well as colony color. All bacteria were plated on medi
    7·1 answer
  • There is a limit to the amount of carbon dioxide that can be processed my plants<br> true <br> false
    8·1 answer
  • Which kind of investigations are meant to provide large amounts of information about a wide range of variables?​
    15·2 answers
  • Which has more momentum: a bowling ball with a velocity of 7.0 m/s or a basketball with a velocity of 9.0 m/s? The bowling ball
    14·1 answer
  • When does separation of homologous chromosomes occur.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!