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UPCAT 2024 > General Science > Flashcards

General Science Flashcards

1
Q

Which part of the cell contains the mitochondria?

A

Cytoplasm

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2
Q

What part of a plant cell stores water, sugar, and minerals?

A

Vacuole

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3
Q

Photosynthesis is ________ to all life on earth.

A

Essential

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4
Q

Carbon dioxide enters plants through the ________ during photosynthesis.

A

Stomata

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5
Q

The main energy foods are carbohydrates and _________.

A

Fats

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6
Q

What diseases does vitamin D deficiency lead to?

A

Rickets

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7
Q

Which blood vessels carry blood back to the heart?

A

Veins

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8
Q

What is the function of the white blood cells?

A

Immune system. To destroy pathogen or bacteria in the body.

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9
Q

What is the function of the excretory system?

A

Remove harmful waste produced by the body.

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10
Q

Which part of a cell is the smallest in size?

A

Ribosome

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11
Q
  1. Kangaroos have 12 chromosomes in each a b cd body cell. This means that the number of chromosomes in each egg cell of a kangaroo is ____?
A

6

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12
Q
  1. Phenotype may be defined as _______?
A

visible expression of genotype

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13
Q
  1. Alleles are genes which _____.
A

occupy corresponding positions on homologous chromosomes

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14
Q
  1. Fine pollen grains in the surface of water are examined under a microscope. It is observed that the pollen grains are in random motion and frequently changing direction.
    The movement is most likely due to what?
A

collisions between water molecules and pollen grains

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15
Q
  1. What is considered as the most primitive kingdom?
A

Monera

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16
Q
  1. What are two different forms of the same gene and are located on homologous chromosomes called?
A

Alleles

17
Q
  1. Enzymes are proteins that catalyze a particular biochemical reaction involving specific substrate molecules. Enzyme activity is affected by pH by what?
A

each enzyme works at different optimum level

18
Q
  1. An embryo begins to develop from a zygote as a direct result of what?
A

cleavage

19
Q
  1. What is the function of the cotyledon in a seed?
A

to provide nutrients for the germinating plant

20
Q
  1. What stimulates the growth of
    the roots in plant cuttings?
A

the use of auxins

21
Q
  1. Species can be best described as _______
A

group of organisms that mate with each other

22
Q
  1. Evolution is best defined as ________.
A

process of change in organisms over a period of time

23
Q
  1. A light microscope contains two lenses that work together to magnify the image the observer is at. Name the part of the microscope that regulates the light that passes through the object that is mounted on the slide.
A

diaphragm

UPCAT 2024 (3 decks)

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