Science 10

question 3 (1 point) question 3
which of the following is true of all greenhouse gases?

question 3 options:

they are naturally occurring.

they exist in fixed quantities.

they trap energy in the atmosphere.

they reflect incoming solar radiation.

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question 4 (1 point) question 4 unsaved
which of the following makes ice cores so useful in determining the composition of the atmosphere in the past?

question 4 options:

the presence of pollen

fossilized plants

air bubbles

the temperature of the core

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question 5 (1 point) question 5 unsaved

how has the amount (level) of carbon dioxide in the atmosphere been changing over the past 200 years?

question 5 options:

they have remained the same.

they have decreased.

they have increased.

they cannot be measured.

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question 6 (1 point) question 6 unsaved
the greenhouse effect is terrible for the planet earth and the environments contained here.

question 6 options:
true
false

Mouse liver cells were homogenized and the homogenate subjected to equilibrium density-gradient centrifugation with sucrose gradients. fractions obtained from these gradients were assayed for marker molecules (i.e., molecules that are limited to specific organelles). the results of these assays are shown in the figure. the marker molecules have the following functions: cytochrome oxidase is an enzyme involved in the process by which atp is formed in the complete aerobic degradation of glucose or fatty acids; ribosomal rna forms part of the protein-synthesizing ribosomes; catalase catalyzes decomposition of hydrogen peroxide; acid phosphatase hydrolysis monophosphoric esters at acid ph; cytidylyltransferase is involved in phospholipid biosynthesis; and amino acid permease aids in transport of amino acids across membranes. a) name the marker molecule and give the number of the fraction that is most enriched for each of the following cell components: lysosomes; peroxisomes; mitochondria; plasma membrane; rough endoplasmic reticulum; smooth endoplasmic reticulum.

Which kingdom includes some organisms that have no nucleus and can live in an environment with an extremely high salt content

Drag the tiles to the correct boxes to complete the pairs. match the nitrogenous base of dna with its complement.