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
katrin [286]
2 years ago
9

What event accompanies energy absorption by chlorophyll (or other pigment molecules) of the photosystems

Biology
1 answer:
valkas [14]2 years ago
6 0

Answer:

an electron is exited

Explanation:

as the electrons are released into the system of electron carriers involved with photosystem two, they lose their energy

You might be interested in
1.Which of the following correctly describes a reaction that forms a disaccharide from two monosaccharides?
coldgirl [10]

The correct answer is:

<h2>Glucose + fructose → sucrose </h2><h3>Explanation;</h3>

Glucose and fructose are monosaccharides and are the building blocks of sucrose, a disaccharide. Thus, disaccharides are just a pair of associated sugar molecules. disaccharide.  They are remunerated when two monosaccharides are joined together and a molecule of water is eliminated -- a dehydration reaction.

2.The correct answer is:

<h3>d.The nucleic acid is DNA and would be found in the cell's nucleus.</h3><h3>Explanation:</h3>

The scientist can say with confidence that this DNA molecule is enclosed by a nucleus based on the combination of the nucleic acid defined. Only eukaryotic cells have a ladder structure. The prokaryotic cells have circular DNA and do not have any organelles, like the nucleus. Consequently, from the steps structure of the DNA, the scientist can see that the cell has a nucleus.

3.The correct answer is:

a.Enzyme activity will decrease, and the reaction will proceed very slowly, or possibly not at all.

Explanation:

The enzyme work under a standard conditions.they work under an optimized conditions if any of them is increased or decreased enzyme activity will b effected.

4.The correct answer is:

a.Adding an enzyme to decrease the activation energy of the reaction

<h3>Explanation:</h3>

Enzymes are macromolecular biological catalysts. Enzymes excite chemical reactions. The particles upon which enzymes may act are called substrates and the enzyme transforms the substrates into separate molecules known as outcomes.

5.The correct answer is:

a.As technology improves so will our understanding of cells.

Explanation:

The advancement in technology improves the understanding of cell and enables the scientist to learn about cell in more detail.

6.The correct answer is:

c.builds on the work of earlier scientists

<h3>Explanation:</h3>

As new work comes to light, a theory is changed; however, it cannot be terminated because one concrete research providing testimony toward it can disprove it.

7.The correct answer is:

b.The lipids and proteins that make up the membrane allow it to be selective about what enters and leaves the cell.

Explanation:

It consists of a lipid bilayer with embedded proteins. The basic function of the cell membrane is to protect the cell from its surroundings. The cell membrane controls the movement of substances in and out of cells and organelles. In this way, it is selectively permeable to ions and organic molecules.

8.The correct option is:

d.fewer mitochondria since there will be fewer molecules left in the cell.

Explanation:

To actively transport molecules against its concentration gradient wanted energy which is generated by the ATP hydrolysis. As mitochondria make and store ATP, here more mitochondria are required to meet the increased energy requirement.

9.The correct answer is:

A protein acts as a pump and moves calcium ions from an area of low concentration to an area of high concentration.

Explanation:

Active transport is the transportation of molecules beyond a membrane from a region of their lower concentration to a region of their greater concentration—in the regulation against the density gradient.

10.The correct answer is:

d.Mitochondrium

Explanation:

The mitochondrion is a double-membrane-bound organelle found in most eukaryotic bodies. Some cells in some multicellular organisms may, though, lack them and present in plants and animal cell.

6 0
3 years ago
Read 2 more answers
Compare actions of cocaine amphetamines and nicotine
Nookie1986 [14]
Nicotine on direct application in humans causes irritation and burning sensation in the mouth and throat, increased salivation, nausea, abdominal pain, vomiting and diarrhea. Predominant immediate effects consist of increase in pulse rate and blood pressure. Nicotine also causes an increase in plasma free fatty acids, hyperglycemia, and an increase in the level of catecholamines in the blood. There is reduced coronary blood flow but an increased skeletal muscle blood flow. The increased rate of respiration causes hypothermia, a hypercoagulable state, decreases skin temperature, and increases the blood viscosity.

For amphetamine the immediate effects are quicker reaction times, feelings of energy/wakefulness, excitement, increased attentiveness and concentration, feelings of euphoria. Side effects of amphetamines can include heart palpitations, dry mouth, headache, hostility, nausea, cognitive impairment, severe anxiety, lack of appetite, teeth grinding, dizziness, increased heart rate, heart palpitations, rapid breathing rate, hypertension (high blood pressure), increased body temperature, erectile dysfunction, irregular heartbeat.

Cocaine causes a short-lived, intense high that is immediately followed by the opposite intense depression, edginess and a craving for more of the drug the side effects are Loss of appetite increased heart rate, blood pressure, body temperature, contracted blood vessels increased rate of breathing, dilated pupils, disturbed sleep patterns, nausea, hyperstimulation, bizarre, erratic, sometimes violent behavior hallucinations, hyperexcitability, irritability, tactile hallucination that creates the illusion of bugs burrowing under the skin, intense euphoria, anxiety and paranoia, depression, intense drug craving, panic and psychosis, convulsions, seizures and sudden death from high doses (even one time)
8 0
3 years ago
Use the drop-down menus to complete the sentences.
Stels [109]

Answer:

1. Digital Lab

2.Electronic health records

3.Digital Library

You're Welcome :)

Explanation:

3 0
2 years ago
What do you think the amino acid sequences for hemoglobin in plants was blank?
SVETLANKA909090 [29]
I Think The answer is a or c Try Those options if There wrong I’ll fix Them for you To be sure you get The right answer Message Me if I’m wrong
3 0
3 years ago
Which hypothesis was Louis Pasteur trying to confirm through his work?
tester [92]
Answer:

B New cells come from preexisting cells.
6 0
3 years ago
Other questions:
  • ​for adolescent males, the peak velocity of linear growth occurs at _____ years of age, on average.
    8·2 answers
  • Which solute is least likely to cross a membrane by simple diffusion?
    7·2 answers
  • What is the main difference between weather and climate?
    13·2 answers
  • which Of the following, which is NOT a characteristics of plants? a. have cell walls b. have roots c. range in height d. live on
    12·1 answer
  • Ferroplasma acidarmanus falls under what kingdom
    10·1 answer
  • How does disease and parasitism cause extinction?
    15·2 answers
  • In humans, dimples are dominant to not having them. If a heterozygous female mates with a male who is also heterozygous, what ar
    11·1 answer
  • Why do you think the weather on the eastern coast of North America is so different than the western coast of North America?
    5·1 answer
  • Which level of organization is the HIGHEST?
    13·1 answer
  • You catch, tag, and release 35 fish back into a pond. Then, you catch 70 more fish, 12 of which have tags on them,
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!