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
Mariulka [41]
3 years ago
13

The lab setup shows four test tubes. Tube 1 contains water only. Tube 2 contains a live snail. Tube 3 contains a live green wate

r plant. Tube 4 contains both a live green water plant and a live snail.
In this setup, which tubes contain at least one organism carrying on cellular respiration?
A) Tubes 1 and 2 only.
B) Tubes 2 and 4 only.
C) Tubes 3 and 4 only.
D) Tubes 2, 3, and 4 only.

Biology
1 answer:
Minchanka [31]3 years ago
4 0

Answer:

D

Explanation:

You might be interested in
The rate of O2 production by the light reactions varies with the intensity of light because light is required as the energy sour
kupik [55]

Answer:

The correct answer is option a.

Explanation:

Yes, the light reactions also depend upon the Calvin cycle. Calvin cycle refers to a phenomenon that is used by the plants and algae to convert carbon dioxide from the atmosphere into sugar, the food needed by the autotrophs in order to grow. The plants rely upon the Calvin cycle for food and energy.  

In the given case, the rate of oxygen production would get diminish as the rate of ATP and NADP+ generated by the Calvin cycle diminishes. Of all the outcomes of the Calvin cycle, ADP and NADP+ are the only ones that get utilized by light reactions.  

The ADP and NADP+ are used up by the light reactions to fuel their reactions. This illustrates that if the rate of ADP and NADP+ generated by the Calvin cycle diminishes the production of oxygen by the light reactions also diminishes.  

5 0
3 years ago
Plz I really really need help
IrinaK [193]

Answer:

behavioral isolation

Explanation:

8 0
3 years ago
A scientist focusing on the evolutionary history of specific significant traits is engaged in
guajiro [1.7K]

A scientist focusing on the evolutionary history of specific significant traits is engaged in cladistics.

Cladistics is a method of biological classification in which organisms (plants and animals) are grouped based upon shared significant derived characteristics (synapomorphies). Cladistics identifies various significant shared traits that can be traced to the most recent common ancestor of a group of species and that are not found in more distant groups and ancestors. Cladistics uses various anatomical, molecular and genetic characteristics of organisms.

4 0
3 years ago
1.) You are studying P120, a protein of 120 KDa that is continuously synthesized in eukaryotic cells. Its cellular concentration
irina1246 [14]

Answer:

1. P120 is degraded in the 26S proteasome

2. The 26S proteasome has a major role in protein degradation and is critical for protein homeostasis

3. Cell cycle and DNA replication are cellular processes regulated by the Ras and NFkB pathways

Explanation:

The proliferation-associated nucleolar protein (p120) is a protein known to be expressed during the interphase of the cell cycle, specifically in G1 and early S phase, where any problem with DNA replication trigger a checkpoint, i.e., a molecular cascade of signaling events that suspend DNA replication until the problem is resolved. In mammalian cells, the 26S proteasome is responsible for catalyzing protein degradation of about 80% (or even more) of their proteins. The 26S proteasome acts to degrade rapidly misfolded and regulatory proteins involved in the cell cycle, thereby having a major role in protein homeostasis and in the control of cellular processes. It is for that reason that inhibitors that block 26S proteasome function have shown to be useful as therapeutic agents in diseases associated with the failure of protein degradation mechanisms (e.g., multiple myeloma). The NF-κB are highly conserved transcription factors capable of regulating different cellular processes including, among others, cellular growth, inflammatory responses and apoptosis. Moreover, the MAPK/ERK pathway is able to transduce different signals received on the cell surface to the nucleus. The MAPK/ERK pathway is activated when a singling molecule binds to a cell receptor which triggers a signaling cascade that ends when a transcription factor induces the expression of target genes, ultimately producing a response in the cell (for example, the progression through the cell cycle).

7 0
3 years ago
Which locations contain carbon
VARVARA [1.3K]

The sun, diamond mines, the air we breathe, labs, steel factories.

5 0
3 years ago
Other questions:
  • The nurse is caring for a client who has a tracheostomy tube with a high-volume, low-pressure cuff. what does the cuff prevent?
    5·1 answer
  • during cellular respiration, which of the following is equal to the total number of carbon, hydrogen, and oxygen atoms in water
    7·2 answers
  • how would the genetic traits of a population change in response to an environmental pressure such as over fishing
    5·1 answer
  • How many significant digits can be found in the value 1895?
    14·1 answer
  • What is released or observed whenever chemical bonds form or are broken
    14·1 answer
  • Which one of the following items would be best measured using meters?
    11·1 answer
  • How many Oxygen atoms are in 12CO2 ?
    13·2 answers
  • And your Answer is Best management practices (BMPs) are methods that have been determined to be the most effective and practical
    15·1 answer
  • Describe the differences between the way that a fungus feeds, and the way that you feed.​
    5·2 answers
  • The amniotic egg, which is present in reptiles, birds, and mammals, is a good example of: horizontal gene transfer. coevolution.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!