origin of life
When did the first signs of life emerge on Earth?
approximately 3,8 million years +-0,5 is correct
IN THE MITOCHONDRION
IN WHICH ORGANELLE DOES PHOTOSYNTHESIS OCCUR?
IN THE CHLOROPOLAST
WHICH ARE THE MAIN COMPONENTS OF THE PLASMA MEMBRANE?
PHOSPHOLIPIDS
NAME THREE COMPONENTS OF THE NUCLEUS?
DNA, NUCLEOPLASM, NUCLEOLUS
What does L.U.C.A. stand for?
Last Universal Common Ancestor
Which process breaks down glucose to produce ATP ?
CELLULAR RESPIRATION
WHAT IS CHLOROPHYLL?
A GREEN PROTEIC PIGMENT THAT RECEIVES THE ELECTROMAGNETIC ENERGY FROM THE SUN.
DESCRIBE THE STRUCTURE OF THE PLASMA MEMBRANE
BILAYER OF PHOSPHOLIPIDS THAT ENCRUSTS PROTEINS
WHAT IS THE FUNCTION OF THE RIBOSOMES?
TO SYNTHESIZE PROTEINS
Carbon-based molecules, Liquid water, Energy source and oxygen are considered requirements for the origin of life on Earth. Which one is wrong and why?
oxygen, there was no oxygen in the atmosphere at that time
WHERE DOES THE ENERGY STORED IN ATP COME FROM?
THE COVALENT BONDS IN GLUCOSE
WHAT IS THE CONVERSION OF ENERGY THAT TAKES PLACE IN THIS PROCESS?
THE ELECTROMAGNETIC ENERGY FROM THE SUN IS TRANSFORMED INTO CHEMICAL ENERGY IN THE COVALENT BONDS OF GLUCOSE
WHAT IS THE FUNCTION OF THE PLASMA MEMBRANE?
TO SEPARATE METABOLISM FROM OUTSIDE, PROTECTING THE CELL, MANAGE WHAT SUBSTANCES COME IN OR GO OUT THE CELL.
WHAT IS THE FUNCTION OF THE GOLGI APPARATUS?
TO TRANSFORM PROTEINS AND EXPORT THEM INSIDE OR OUTSIDE THE CELL
What characteristic determines the appearance or (LUCA)?
Its ability to compertamentalize chemical reactions inside a plasma membrane.
WHAT ARE THE FINAL PRODUCTS OF THE CELLULAR RESPIRATION?
CO2 AND H2O
WHAT HAPPENS TO CHLOROPHYLL WHEN IS EXCITED BY LIGHT?
IT LOOSES TWO ELECTRONES THAT ARE SUBSTITUTED FOR 2 THE ELECTRONS OF THE HYDROGENE IN WATER
WHAT IS OSMOSIS?
THE SIMPLE DIFUSSION OF WATER THROUGH A SEMIPERMEABLE MEMBRANE FROM THE HYPOTONIC SOLUTION TO THE HIPERTONIC SOLUTION UNTIL BOTH CONCENTRATIONS ARE BALANCED OR ISOTONIC.
WHAT IS THE STRUCTURE OF THE NUCLEAR ENVELOPE?
A DOUBLE PLASMA MEMBRANE WITH PORES
DEFINE METABOLISM
All the chemical reactions that occur inside the cell
WHAT IS SYMBIOGENESIS?
THE HYPOTHESIS THAT SUGGESTS THAT THE MITOCHONDRIA AND THE CHLOROPLASTS WERE PREVIOSLY PROKARYOTIC CELLS AS THEY CONTAIN DNA AND RIBOSOMES
WHAT ARE THYLAKOIDS?
THE LITTLE SACS STACKED INSDIE THE CHLOROPLAST WHICH CONTAIN CHLORPHYLL WHERE THE PHOTO PHASE OF PHOTOSYNTHESIS OCCURS
WHY DOES WATER FIND DIFFICULTIES IN MOVING FROM THE HYPERTONIC SOLUTION?
BECAUSE IT CANNOT MOVE DUE AS IT IS SOLVING SALTS OR OTHER SOLUTES
HOW IS INFORMATION FROM GENES ABLE TO ACCESS THE RIBOSOME?
DNA CANNOT LEAVE THE NUCLEOUS, SO IT'S COPIED TO mRNA THAT CROSSES THE NUCLEAR PORES TO THE RIBOSOMES