Question

please help me anwser these questions 1. Phosphoglycerides – what are they comprised of chemically? how...

please help me anwser these questions

1. Phosphoglycerides – what are they comprised of chemically? how do you recognize them?

2. what are sphingolipids and where they are found in animal cells?

3. explain secondary active transport

4. what are the light-dependent and light-independent phases of photosynthesis?







0 0
Add a comment Improve this question Transcribed image text
Answer #1

1. Phospholglycerides are esters of only two fatty acids, phosphoric acid and a trifunctional alcohol - glycerol (IUPAC name is 1,2,3-propantriol). The fatty acids are attached to the glycerol at the 1 and 2 positions on glycerol through ester bonds.

2. Complex sphingolipids located in the plasma membrane of animal cells (especially nerve cells) have a structural function and are believed to protect the cell surface from harmful environmental factors.

3. Secondary active transport: Secondary active transport or co-transport, also uses energy to transport molecules across a membrane; however, in contrast to primary active transport, there is no direct coupling of ATP; instead, the electrochemical potential difference created by pumping ions out of the cell is instrumental.

Light-dependent and light-independent reactions are two successive reactions that occur during photosynthesis.

Key Points

In light-dependent reactions, the energy from sunlight is absorbed by chlorophyll and converted into chemical energy in the form of electron carrier molecules like ATP and NADPH.

Light energy is harnessed in Photosystems I and II, both of which are present in the thylakoid membranes of chloroplasts.

In light-independent reactions (the Calvin cycle), carbohydrate molecules are assembled from carbon dioxide using the chemical energy harvested during the light-dependent reactions.

Add a comment
Know the answer?
Add Answer to:
please help me anwser these questions 1. Phosphoglycerides – what are they comprised of chemically? how...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • please help me 1. Define each type of immunity. Name one type of cell involved in...

    please help me 1. Define each type of immunity. Name one type of cell involved in each of the following processes and where the cell is found: a. Innate immunity: b. Adaptive immunity 2. Watch the video on slide 3 and answer the following. a. How do B cells react to antigens? b. Which cells regulate the immune system? c. Which adaptive immune cells kill virus-infected cells? 3. What is the purpose of humoral immunity? 4. Define antigen. Why are...

  • I need help re-doing these questions. Please help me answering them and explain it please!! A...

    I need help re-doing these questions. Please help me answering them and explain it please!! A metal sphere is suspended from a light string of length 25cm. How many oscillations per second does it make? Show all your work

  • can yall please help me figure out these questions 1-10? PLEASE I NEED HELP!! Of the...

    can yall please help me figure out these questions 1-10? PLEASE I NEED HELP!! Of the following events from the light reactions of photosynthesis, which would be expected to occur first? While being split, electrons are taken out of water. Acceptance of electrons by Pc from the cytochrome complex Donation of electrons from reduced Pq to the cytochrome complex Light-induced reduction of the primary elecetron acceptor in the reaction center of PS ll takes place. Question 2 (2 points) The...

  • please help me to answer all these questions please please!!! Home Work Micro Fall 2019. Chapts...

    please help me to answer all these questions please please!!! Home Work Micro Fall 2019. Chapts 6 and 12 Answer 10 questions = 50 points 1. Every virus can infect any organism. True or False-Explain your answer. 2. Penicillinase enzyme produced by drug resistant bacteria makes them resistant to penicillin. How it works. How some modified penicillin (like Amoxicillin or Ampicillin still kills penicillin resistant bacteria? 3. What is the difference between lysogeny and lytic cycle of a virus, explain....

  • please help me answer this, im using it to study 13. If animal metabolism is related...

    please help me answer this, im using it to study 13. If animal metabolism is related to temperature, then increasing temperature will increase animal metabolism (as measured by carbon production which is one of the waste products of animal metabolism). ature, then increasing resting room m (as measured by carbon dioxide gas a. What is the independent variable in this study? b. What is the dependent variable? c. What are some things that you might want to keep constant? d....

  • Please help me solve the following 2 questions 1. The table below shows the percentage of...

    Please help me solve the following 2 questions 1. The table below shows the percentage of the body composed of water for various vertebrates. Animal % of body composed of water Herring Frog Chicken Kangaroo 67 78 74 65 Rat Which animal would you expect to have the most concentrated urine? Provide a reason for your prediction. The kangaroo rat and the chicken feed largely on plant products, while the herring and frog are carnivores. Explain how food source would...

  • Please help me with ALL of these questions. Thank you so much Question 7 0.3 pts...

    Please help me with ALL of these questions. Thank you so much Question 7 0.3 pts The chloroplast is a membrane-bound organelle very similar to the mitochondrion. Both organelles are thought to have been acquired through an endosymbiotic event where a bacterium was engulfed by an ancestral eukaryotic cell and accidentally retained over evolutionary time and evolved into specialized organelles. Which area of the chloroplast is most similar to the inner membrane of the mitochondria such that both areas in...

  • Please help me answer the Questions. 1.how do a blind person move from where they to...

    Please help me answer the Questions. 1.how do a blind person move from where they to where the entrance door is located? 2) how many ways a blind person can open the door? please explain each ways. 3) Please how do i priotize the needs of the customers in blind handicap door accessibility?

  • Please help me know the right anwser and the process Consider a metal lattice with atoms...

    Please help me know the right anwser and the process Consider a metal lattice with atoms separated b 0.143 nm. Electrons will diffract when passing through this crystal if their de Broglie wavelength matches the lattice spacing. What speed (in m/s) of electrons is required for the de Broglie wavelength of the electrons to exactly match the lattice spacing? Answer: Consider the following four famous experiments: 1. Einstein's experiments on the photoelectric effect 2. Young's experiment showing the diffraction of...

  • Topic: Electron Transport/Oxidative Phosphorylation Can someone please help me answer the questions above and explain why...

    Topic: Electron Transport/Oxidative Phosphorylation Can someone please help me answer the questions above and explain why did you pick that answer? Thanks

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT