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
Illusion [34]
3 years ago
6

Leaves have specialized cells called guard cells. Guard cells will contract and relax which allows them to open and close pores

in the leaf called stomata. When stomata are open, water is pulled up to the leaves and some water may escape. When stomata are closed, water remains still within the plant.
Based on the description of guard cells and stomata, what internal and external conditions would most likely cause the stomata to be open?
There is a lack of water in the plant, and it is daytime.
There is a lack of water in the plant, and it is nighttime.
There is plenty of water in the plant, and it is daytime.
There is plenty of water in the plant, and it is nighttime.
Biology
1 answer:
quester [9]3 years ago
8 0

Answer:

its not c just saying

Explanation:

You might be interested in
The earth's surface tends to lose heat in winter. Which of the above cities would have the warmest average winter temperature? W
Zepler [3.9K]

Explanation:

Of the energy that reaches the Earth from the Sun, a small amount is absorbed by the atmosphere, a larger amount (about 30%) is reflected back to space by clouds and the Earth's surface, and most of it is absorbed at the planet surface and then released as heat. 

Energy is transferred between the Earth's surface and the atmosphere in a variety of ways, including radiation, conduction, and convection.

Molecules of all substances, even solids, have random motion and therefore an associated kinetic energy and temperature. ... Completely empty space would have no temperature since there are no molecules there.

(this is not much but hope it helps u)

4 0
3 years ago
As filtrate passes through the long loop of Henle, salt is removed and concentrated in the interstitial fluid of the kidney medu
storchak [24]

Answer:

Nephron is the functional unit of kidney. The kidney contains around 4 to 5 million of nephrons in their structure. These nephrons helps in the blood filtration.

The loop of Henley passes down the filtrate for the production of urine. The excess salt is removed from the loop and deposited in the medullary part of the kidney. This is important as the nephron can now become hyperosmotic  medullary concentration and helps in the urine production.

7 0
4 years ago
The NADPH generated by the pentose phosphate pathway primarily serves as a
Igoryamba

Answer:

Option-A

Explanation:

Pentose phosphate pathway is the alternative pathway taking place in both eukaryotes and prokaryotes parallel to the glycolysis.

The pentose phosphate pathway forms the electron carriers called NADPH and the ribose-5 phosphate.

The NADPH is formed in large amounts through this pathway which contains a very high amount of energy. NADPH can donate its hydride ions, therefore, it can be involved in the reaction where it can donate energy in the form of hydrogen and electron.

The NADPH is therefore involved in the formation of reducing biosynthetic pathways like fatty acid synthesis, cholesterol synthesis, and bile acid synthesis.

Thus, Option-A is the correct answer.

8 0
3 years ago
4. Why is there controversy about whether or not a virus is alive?
Yanka [14]
Mostly because they are made up of living cells, but in the bigger picture they are not alive.
5 0
3 years ago
Read 2 more answers
The cytoskeleton is an organelle that consists primarily of proteins. Group of answer choices True False
kotykmax [81]

Answer:

True

Explanation:

The cytoskeleton is a non-membranous organelle. It is a dense network of protein fibers. The main function of the cytoskeleton is to impart cells mechanical strength, shape, and ability to move. The cytoskeleton is highly dynamic as it keeps on constantly changing. Its framework of three types of protein filaments.

These filaments are microtubules, microfilaments, and intermediate filaments. Microfilaments are made up of actin protein while the tubulin protein subunits make the microtubules. Both actin and tubulin are the globular protein. On the other hand, several different proteins together make the intermediate filaments of the cytoskeleton.

7 0
4 years ago
Other questions:
  • Which most directly controls the rate at which food is broken down to release energy?
    8·2 answers
  • A moving hang glider has ____ energy, which converts to _____ energy once the hang glider stops.
    6·2 answers
  • How many electrons are there in a completed outer shell for period 1?
    15·1 answer
  • if a cow that produces large quantities of milk is bred with a bull whose mother also produced large quantities of milk,what wou
    13·1 answer
  • What are the steps of cellular respiration?
    13·1 answer
  • Natural selection states that individuals
    8·1 answer
  • How does a gene effect the traits of a human
    15·1 answer
  • Which choice is an example of a decomposer?<br> 1. tree<br> 2. sun<br> 3. bat<br> 4. fungi
    7·2 answers
  • I need help with physiology, how the brain perceived visual information? Fill in the blank
    11·1 answer
  • Tension can cause the formation of fault-block mountains or ____??
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!