Life Science Q2 Review

Introduction To Cellular Respiration and Photosynthesis

In this lesson you will be asked to look at a picture and learn about cellular respiration and photosynthesis

Multiple Choice

Look at the picture. In what cell organelle does photosynthesis occur?

• Mitochondria

• Chloroplast

Multiple Select

Look at the picture. What are three reactants needed for photosynthesis? (choose three from below)

• C₆H₁₂O₆

• H₂O

• CO₂

• O₂

• sunlight energy

Multiple Select

Look at the picture. What are two products made from photosynthesis? (choose two from below)

• C₆H₁₂O₆

• H₂O

• CO₂

• O₂

• energy

Multiple Choice

Look at the picture. In what cell organelle does cellular respiration occur?

• Mitochondria

• Chloroplast

Multiple Select

Look at the picture. What are two reactants needed for cellular respiration? (choose two from below)

• C₆H₁₂O₆

• H₂O

• CO₂

• O₂

• energy

Multiple Select

Look at the picture. What are three products are made from cellular respiration ? (choose three from below)

• C₆H₁₂O₆

• H₂O

• CO₂

• O₂

• energy (ATP)

Multiple Select

Look at the picture. What are four things are recycled between cellular respiration and photosynthesis? (choose four from below)

• C₆H₁₂O₆

• H₂O

• CO₂

• O₂

• energy

Multiple Choice

Look at the picture. What is the one component in photosynthesis that is not recycled and must be constantly

available?

• C₆H₁₂O₆

• H₂O

• CO₂

• O₂

• energy

Multiple Choice

Considering last chapter, do plant cells have chloroplasts? Why are they important?

• Yes - they photosynthesize and give energy for the food chain

• no, they are not important

Multiple Choice

Do you think plant cells have mitochondria? Explain.

• Yes, they need to convert the sugar they make into ATP for the cell to use

• no, They already have sugar.

Multiple Choice

Do you think animal cells have chloroplasts? Explain.

• Yes, they need them to photosynthesize.

• No, they are consumers and eat their food.

Multiple Choice

Do you think animal cells have mitochondria? Explain.

• Yes, they need mitochondria to convert sugar into ATP - a form of energy the cell can use.

• No, they do not need ATP energy

Look at this picture again...

• Notice that the products (what is produced) of photosynthesis are the reactants (what is needed) of cellular repiration

• Notice also that the products of cellular respiration are the reactants of photosynthesis

Multiple Choice

The _______________of photosynthesis are the ____________ of cellular respiration.

• products, products

• products, reactants

• reactants, reactants

Multiple Choice

Explain how the energy used by an athlete during a football game comes from the energy of sunlight.

• The athlete's have chloroplasts in their cells which convert sunlight into ATP.

• The athlete's eat food, which originally came from plants. The plants used the sunlight energy and converted it into chemical (sugar) energy to be used by the athletes.

Genetics Review

Vocabulary

Dominant genes:

They are the strong genes.

It will shown with capital Letter.

B= brown

Remember she got one from dad and one from mom

She might have a combination of : BB or Bb (They are dominant)

Genes

Dominant genes: use capital letters. (B, T, H R)

Recessive genes: use lower case of the same gene (b, t, h, r)

Recessive genes: weak genes

It is the lower case of dominant gene.

Lower case: b

She has both bb ( one from one and one from dad)

Fill in the Blanks

Phenotype (photo) are your

• Characteristics

• Traits

Genotype:

• GENES

• THE LETTERS

Fill in the Blanks

Open Ended

Genotype is the combination of

Homozygous parents have the same pair of genes.

AA (mom)

aa (dad)

HETEROZYGOUS

DIFFERENT PAIR OF GENES Bb, Gg

Multiple Choice

Homozygous are the

• same pair of genes

• Cc

• different pair of genes

Multiple Select

Recessive genes are

• strong genes

• weak genes

• BB

Multiple Choice

Heterozygous are

• The same pair of genes

• different pair of genes

• bb

Multiple Select

Wrinkle seeds are recessive over Round.

Which pair is a recessive gene?

• RR

• rr

• Rr

Natural Selection and Selective Breeding

Multiple Choice

Natural selection

• organisms better adapted to their environment tend to survive and produce more offspring

• process used by humans to develop new organisms with desirable characteristics

Multiple Choice

Selective breeding

• organisms better adapted to their environment tend to survive and produce more offspring

• process used by humans to develop new organisms with desirable characteristics

Multiple Choice

Natural selection is where ___________ decides which traits should be passed on.

• nature

• a human

• traits

• evolution

Multiple Choice

"Survival of the fittest" describes which theory

• Natural selection

• Selective breeding

Multiple Choice

Which organisms are most likely to survive?

• The strongest

• The best adapted

• The fittest

• The most athletic

Multiple Choice

Selective breeding is where _____________ decides which traits should be passed on.

• nature

• a human

• traits

• evolution

Multiple Choice

The long and sharp beak of a woodpecker is an example of

• natural selection

• selective breeding

Multiple Choice

Which is an example of selective breeding?

• A giraffe's long neck.

• Clipping a horse's tail so it's not too long.

• Training a horse to run faster.

• Cross breeding a labrador retriever with a poodle .