On average, how many guard cells are found on the lower surface of a bean leaf?​

Answers

Answer 1

Answer:

two guard cells

Explanation:

Stomata are the pores found on the surface of leaves and some stems. They are formed from two guard cells (bean-shaped cells) joined at their ends, forming a pore.


Related Questions

.
How does the skeleton function to store minerals?

Answers

Answer:

calcium and phosphorous,

Explanation:

which can given up if the body requires the minerals for others functions

0
Which biomolecule has a carbon-nitrogen bond?
starch
water
protein
glucose

Answers

Answer:

protein

Explanation:

it is called a peptide bond

Science:Imagine that only half of the water vapor that the air can hold is actually in the air.

What is the relative humidity?


25%

50%

75%

100%

Answers

I think it D.100% because the air has reached its limit

Explain how carbon moves from one Earth System sphere to another

Answers

Answer: Carbon moves from living things to the atmosphere. Each time you exhale, you are releasing carbon dioxide gas (CO2) into the atmosphere. Animals and plants need to get rid of carbon dioxide gas through a process called respiration. Carbon moves from fossil fuels to the atmosphere when fuels are burned.

Which large muscle is known as the "swimmer's muscle" because it pulls the arm downward and backward while rotating medially?

Answers

Answer:

c. Latissimus dorsi

Explanation: is correct

15. Brown eyes (B) are dominant over blue eyes (b).
Using this example, explain how a child can have a
trait that neither parent expresses physically. Use a
Punnett Square to validate your answer.

Answers

Both parents have Bb Bb

      B        b

B     BB     Bb

b     Bb     bb

The child got little b, little b

Which of the seven planets is closest to the sun

Answers

Answer:

mercury

Explanation:

Answer:

MERCURY.  

Explanation:

fertilization in humans usually takes place in the

Answers

Answer: here you go

Explanation:

Fertilization usually takes place in a fallopian tube that links an ovary to the uterus. If the fertilized egg successfully travels down the fallopian tube and implants in the uterus, an embryo starts growing.

Sound travels fastest in matter that has relatively ______ densities.

Answers

Answer:

low

Explanation:

Which of the following muscles gives Reed his defined six-pack?

Answers

Answer:

a. Rectus abdominis

Explanation: is correct

which activities of the body are controlled by the autonomic nervous system?

Answers

The autonomic nervous system controls internal body processes such as the following:

Blood pressure.

Heart and breathing rates.

Body temperature.

Digestion.

Metabolism (thus affecting body weight)

The balance of water. ...

The production of body fluids (saliva, sweat, and tears)

Urination.

Cells and the organisms they make up reproduce through cell division. Some
organisms reproduce through mitosis, while others reproduce through meiosis and
fertilization. What advantage does meiosis give to organisms that reproduce sexually?
a
Meiosis ensures that offspring inherit genes from their parents.
b
Meiosis ensures that offspring will not inherit any genetic disorders.
c
Meiosis ensures that offspring are genetically different from their parents.
d
Meiosis ensures that offspring will have identical phenotypes to their parents.

Answers

C cause they won’t be identical to the parent since they are reproducing sexually

The advantage meiosis give to organisms that reproduce sexually is meiosis ensures that offspring are genetically different from their parents.

What do you mean by meiosis?

In sexually reproducing organisms, meiosis is a unique type of cell division that results in the production of gametes, such as sperm or egg cells.

Meiosis is a kind of cell division in physically repeating life forms that diminishes the quantity of chromosomes in gametes (the sex cells, or egg and sperm).

Gametes, or sex cells, are the end result of meiosis. Each of the four haploid daughter cells produced during meiosis has half the number of chromosomes as the parent cell.

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Why do plants need to preform cellular respiration like animals?

Answers

Answer:

To break down food in form of sugar or glucose for energy to live

Faris and his wife have normal skin color, but they both have a parent with albinism if
you know that albinism is a recessive trait. What is the probability that their first child
will have albinism?

Answers

Explanation:

If a man who's a carrier for albinism marries an albino what percentage of their children will be albinos, however if both parents carry the gene, there's a 1 in 4 chance that their child will have albinism and a 1 in 2 chance that their child will be a carrier. Carriers do not have albinism but can pass on the gene.

Which process occurs during the light-dependent reactions in photosynthesis?

Answers

Explanation:

thanks for the points man :) yes sir

exhibiting a personality that ________ is a common characteristic of all personality disorders.

Answers

Answer:

borderline or narcissistic

Explanation:

i think that right

Answer:

differs markedly from the expectations of oneś culture.

Suggest why the temperature of baby food must be controlled when the enzymes are added

Answers

Answer:

temperature plays an important role in biology as a way to regulate reactions.

Enzyme activity increases as temperature increases, and in turn increases the rate of the reaction. This also means activity decreases at colder temperatures.

serotonin and norepinephrine levels in the the brain are altered by drugs like prozac and zoloft. these are known as

Answers

Serotonin aids in mood regulation including all other functions. While norepinephrine helps stimulate the brain and increase energy and awareness.

Their levels in the brain are altered by drugs like prozac and zoloft and they are known as antidepressants.

Antidepressants like prozac and zoloft are known to be effective in treating some disorders including mood disorders and bipolar disorders.

They are able to do this through the regulation of the amount of these neurotransmitters (serotonin and norepinephrine) in the brain.

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Select the correct answer.
The images show two different types of Galapagos tortoises that scientists believe descended from the same species. The first type (left) are found on islands that have high vegetation and few grasses. The second type (right) are found on an island that has large amounts of grasses and low-lying shrubs. What explains the type of turtle found on the islands with high vegetation?

A.
The environment triggered a gene mutation in neck length in order to help the turtle survive.
B.
Mutations are random, so it is by chance that turtles with longer necks live on these islands.
C.
Turtles with genes for long necks had a better chance of surviving to reach reproductive age.
D.
Turtles with short necks completely lacked adaptations for finding food, so they died off.

Answers

Answer:

c

Explanation:

not sure

A plant which loses its leaves in winter is known as which of the following?
O Biennial
O Bulb
O Evergreen
O Deciduous

Answers

Answer:

Deciduous

Explanation:

You had the reactants necessary for cellular respiration, so why did nothing happen?

Answers

You need enzymes found in the cytoplasm and mitochondria of cells in order to do the chemical reactions that change oxygen and glucose into sugar and energy.

The teacher provided enough sugar with oxygen, but nothing happened immediately because there was no enzyme in the surroundings that could catalyze the slow reaction and make carbon dioxide and water. Here the enzyme is absent.

What is glycolysis?

Glycolysis is a process of breaking down glucose and is the first step of cellular respiration, where sufficient energy is produced in the presence of oxygen. To produce energy for the cell, glycolysis requires a large number of enzymes to be carried out quickly.

Following glycolysis, the end product enters the citric acid cycle and the electron transport chain, where oxygen carries the final electron and carbon dioxide and water are released with ATP (energy). As the reaction is slow, enzymes act as catalysts and complete the reaction in a short time, but if this process is taken in the absence of the enzyme, then it will take years and years to complete.

Hence, without the presence of enzymes, the glucose and oxygen did not make carbon dioxide and water.

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20 points for Algae are important to the earth's supply of:________
hydrogen
oxygen
nitrogen
plzzzzzzzz

Answers

I’m almost positive the answer is oxygen
the answer is oxygen :)

what process is shown below?

Answers

its A facilitated diffusion



Read the statements below. Select the events that are triumphs of science.

Answers

Science is known to have made regular people decide to work hard and dedicate themselves to solving a problem. The events that are triumphs of science are;

Regulating the cell cycle to fight cancer. Producing children with higher intelligence. Development of vaccines against disease. Transforming bacteria to produce biofuels. Genetically modifying crops to resist pests.

There have been the footprint of Science behind making Children smarter in music, chess, computer etc.

There are now cheaper and cleaner biofuels that is produced through genetic engineering to alter how some organisms process sugar.

Cell cycle checkpoints are very important to halt cell cycle increase in response to DNA damage, making time therefore for DNA repair.

See full question below

Read the statements below. Select the events that are triumphs of science. Regulating the cell cycle to fight cancer.

Producing children with higher intelligence. Development of vaccines against disease. Transforming bacteria to produce biofuels. Genetically modifying crops to resist pests. Understanding how molecules affect metabolism to fight obesity

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Please help me

What is the thickest layer of the earth?

the crust?
the mantle?
the outer core?
The inner core?


ty!

Answers

I think it’s the outer core! I hope this is correct. Please let me know!

Answer:

core

The core is the thickest layer of the Earth, and the crust is relatively thin, compared to the other layers.

Explanation:

Drag the correct reactants and products to each box to complete the equations.

Photosynthesis

GO2

Oxygen

1

db

Respiration

H20

G6H1206

ATP

Les Demy

H20

Oxygen

1

GO2

Energy

1:

GHOS

Answers

Answer:

Photosynthesis = Carbon Dioxide + Water -> Oxygen + Glucose

6CO2 + 6H2O -> 6O2 + C6H12O6

Respiration = Glucose + Oxygen -> Water + Carbon Dioxide

C6H12O6 + 6O2 -> 6H2O + 6CO2

Muscles that move the wrist and hand originate on which bone(s)?

Answers

Answer:

a. Humerus

Explanation: is correct

Muscles that move the wrist and hand originate on bone carpals. The correct option is d.

What are carpals?

The carpal bones are wrist bones that connect the distal portions of the forearm's radial and ulnar bones to the bases of the five metacarpal bones of the hand. There are eight carpal bones that are divided into two rows: proximal and distal.

The wrist is made up of eight tiny bones (carpal bones) and two large bones in the forearm — the radius and ulna. Each finger has one hand bone (metacarpal) and three finger bones (phalanges), but each thumb has one metacarpal bone and two phalanges.

The carpals are eight bones present in the wrist of the hand. It helps in moving the wrist, and it also attaches the hand to the wrist.

Therefore, the correct option is d, carpals.

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Which of the following was NOT a type of evidence Darwin had available in his time?
A. Comparative Anatomy
B. DNA
C. Fossils
D. Artificial Selection

Answers

DNA was not a type of evidence Darwin had available in his time!!

Match the component of the cerebral nuclei with its function.
a. Involved in consciousness and integration of information from multiple senses (Click to select)
b. Stimulates muscles to produce the pattern and rhythm of walking (Click to select)
c. Excites and inhibits the thalamus to adjust muscle tone (Click to select)
d. Involved in emotion, behavioral activity, and mood (Click to select)
e. Controls muscular movement at the subconscious level
1- claustrum
2- caudate nucleus
3- globus pallidus
4- amygdaloid body
5- putamen

Answers

The components of cerebral nuclei with its correct functions are listed below.

Claustrum: This is involved in consciousness and integration of information from multiple senses. That is option A.

Caudate nucleus: This stimulates muscles to produce the pattern and rhythm of walking. That is option B.

Globus pallidus: This excites and inhibits the thalamus to adjust muscle tone. That is option C.

Amygdaloid body: This is Involved in emotion, behavioural activity, and mood. That is option D.

Putamen : This controls muscular movement at the subconscious level. That is option E.

The cerebral nuclei makes up the three components of the cerebrum that plays an important role in neural systems controlling somatic movement and motivation.

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Clayey soil is useful for growing plants because------

a) Water holding capacity in it is low

b) The percolation rate of water in it is high

c) It is rich in Humus​

Answers

Answer:

C.) It is rich in humus and very fertile

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